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Texel.out.923
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Texel.out.923
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3kB3/4pnb1/qpp2bR1/3Nr2r/NB2K1P1/nb1p1P2/nn3Br1/5B2 w - - 0 1 legal: proof: e4 a5 b4 axb4 h4 g5 a3 bxa3 e5 gxh4 e6 c5 Nf3 fxe6 Ng1 e5 Ba6 e4 Bc4 Ra7 Bf1 Ra8 c4 Kf7 d4 Qb6 d5 Qg6 Qd4 cxd4 c5 Qf6 c6 Ke8 c7 Qd6 Ra2 Nf6 Rc2 Ng8 Rc6 dxc6 Bf4 Qd7 Bc1 Qd8 Kd2 h5 g4 h3 d6 h4 f3 h2 Bh3 e3+ Kd3 b6 Nd2 a2 Bf1 a1B Nh3 e2 Ng5 e1N+ Ke4 h3 Rg1 h1R Ba3 d3 Rg3 h2 Bb4 Be6 c8B Rg1 Nf7 h1N Ba5 Bb3 Nb1 Bfg7 Bc3 Ra5 Nh6 Na6 Bb4 Rg2 Rh3 Nc2 Nc3 Na3 Na4 Baf6 Nf5 Rh5 Ne3 Nh6 Nd5 Nf7 Be6 Qc7 Bd7+ Kd8 Be8 Qb7 d7 Qa8 Be1 Nb4 Bf2 Qa6 Rh2 Rg5 Rh6 Na2 Rg6 Rh5 Ndc3 Kc7 d8B+ Kc8 Bc7 Rag5 Bd6 Kd8 Kf4 Ra5 Bb4 Rae5 Bh4 Nf2 Nd5 Nd1 Bf2 Reg5 Ke4 Nb2 Ne3 Rf5 Nd5 Re5+
Nb3QRn/r3NN1B/3n1n1r/8/B2kbr2/1q2p1n1/p4p2/1RnbQNK1 w - - 0 1 legal: proof: d4 c5 e4 cxd4 a4 g5 h4 gxh4 f4 b5 f5 bxa4 Be3 dxe3 f6 exf6 Bd3 f5 Bf1 f4 g4 Ke7 c4 Kf6 b4 Ke5 b5 a5 g5 d5 g6 f5 g7 h5 b6 d4 b7 f3 c5 f4 c6 d3 c7 a3 Be2 f2+ Kf1 d2 Nc3 a2 Ba6 h3 Qc1 d1B Be2 h2 Nb5 h4 Nc3 h3 Bc4 a4 Nb5 a3 Qb1 Bd6 Be2 Ne7 g8Q Bf5 c8N Nd7 b8N Nf6 Qbb3 Rh6 Qf8 Ng6 Bd3 Ra7 Rb1 a1N Ne7 a2 Na6 Bb8 Ne2 Nh8 Rg1 h1N Rg8 h2 Nac7 Qd5 Qb4 Nb3 Na8 Nc1 Nd6 Qb3 Qe1 Ng3+ Kg2 f1R Nf7+ Ke6 e5 h1N Bc2 Nge4 Ng3 Nd6 Bd3 Rf2+ Kg1 Be4 Nf1 Ng3 Bc2 Bc6 Bh7 Be4 Nc8 Kd5 e6 Kd4 e7 f3 e8B Rfh2 Bc6 R2h4 Ba4 Rf4 Ne7 f2+
RR4nQ/2q2K1p/1b4N1/3b1Rbn/pR3b2/1n1QB2k/B1n1rn2/4n1Q1 w - - 0 1 illegal: No possible last move
2nn2Nk/1RbbQQ2/3qp2b/1n1Nn3/1RrnK2n/n7/2NNr3/N3n1Q1 w - - 0 1 legal: proof: d4 a5 g4 g5 f4 f5 e4 fxe4 b4 axb4 f5 h5 Bh3 c5 Bf4 gxf4 g5 cxd4 Bg4 hxg4 Kf2 Kf7 c4 Kg7 a4 b5 h4 d5 c5 f3 g6 e3+ Kg3 d3 Kf4 b3 c6 g3 a5 d4 a6 e2 h5 e1N c7 b2 a7 g2 Rh3 e6 Ra2 b4 Nd2 b1N Qa4 f2 Re3 f1N Ra1 b3 Qa2 b2 Qc4 Ne7 Qb4 Na3 Ke5 b1N Qb6 Bd7 c8N Nh2 Ke4 Nb5 Ngf3 g1B Ra4 Nbc6 Rb4 N1a3 Nb3 d2 Nd6 d1N Nfd2 d3 Na1 Nhf3 N6c4 Rc8 a8N Nh4 Nc7 Nbd4 Nd5 Bh2 h6+ Kg8 f6 Bc7 g7 Nb2 f7+ Kh7 Ne5 Nbc4 Ng4 N4e5 g8N Bg7 Rf3 Qf8 Nge3 Nd8 Nb1 d2 Nec2 d1N Nd2 N7c6 Rfb3 Na7 Qc5 Qd6 Rb7 Bf8 R3b4 Bg7 f8Q Nc3+ Ke3 Ncb5 Ke4 N1d3 Qf7 Ne1 Nge7 Rf8 Ng8 Kh8 h7 Bh6 Qe7 Rf2 Qf7 Qb6 Qce7 Qd6 Rb8 Neg2 Ne1 Ba5 Rb6 Rc4 Rb7 Nef3 Kd3 Re2 Qg6 Bc7 Qgg5 Qc6 Nec2 Qd6 Qe3 Nc8 Qg1 Be3 Ke4 Ne5 Qe8 Kg7 Qg6+ Kf8 h8Q Ne1 Qhh7 Bh6+ Qe3 Bb8 Qg5 Bc7 Qhf5+ Ndf7 Qe7+ Kg7 Qf2 Kh8 Qg1 Rh2 Qf4 Nd8 Qff7 Re2+
R3b1r1/Rrb3nR/2pk2Br/1bnr4/2bpqN2/2PB1N1q/6Q1/1Q2K1n1 w - - 0 1 legal: proof: d4 a5 g4 e5 e4 exd4 f4 g5 b4 axb4 e5 h6 e6 fxe6 Be3 e5 Bf2 e4 Bh4 gxf4 g5 Qf6 g6 Qd8 Bg5 hxg5 a4 Ke7 h4 b5 c3 d5 g7 b3 h5 g4 a5 b2 a6 e3 a7 b4 h6 b3 h7 f3 Bh3 g3 Ra4 c6 Qe2 g2 Ra1 f2+ Kd1 f1B Ra5 d3 Na3 b1B Ra6 b2 Nc4 d2 Qg4 Bd7 Qg3 Qc8 Ra2 Na6 Qg5+ Nf6 g8R Nc5 Na3 Bc4 Qg3 Bbd3 Bf5 Ne8 Nb1 Ng7 Bg6 Be8 Ne2 g1N Nf4 Kd6 Qg2 Qh3 Ra4 Rc8 a8B Bf1 Bb7 e2+ Kc2 d1R Ra7 e1R Nd2 Re7 Ba6 Rb7 Nf3 Bb5 Rh2 Bfc4 Rh1 Be7 Rf8 Rg8 h8Q Bd8 Qh7 Bc7 Rh2 d4 Rh1 Ra1 Kd2 Ra5 Ke1 Ra8 Bf7 Rh8 Qb1 Rh6 Bg6 Rd8 Qd3 b1Q+ Qd1 Qc2 Qb1 Qd7 Rh5 Qh3 Rh8 Qcf5 Rh7 Qc2 Rf5 Rc8 Rf8 Qe4+ Kd2 Bef7 Ne5 Ba4 Qe2 Nce6 Qc2 Ba2 Qb1 Rd5 Nf3 Nc5 Bd3 Bc4 Ke1 Bab5 Rfh8 Re8 Rg8 Re7 Rga8 Re8 Bf5 Rg8 Bg6 Qef5 Qd2 Be8 Qg2 Qe4+
R7/6n1/nQrQq3/2bBqqbb/QB1P1knq/q1Nr4/p5bR/R1K5 w - - 0 1 legal: proof: c4 d5 a4 dxc4 f4 e5 a5 exf4 a6 bxa6 Ra4 a5 Ra1 a4 g4 fxg3 Qc2 h5 Nc3 h4 Ne4 g2 Ng3 hxg3 Qb3 Bh3 Qd1 Bc8 h4 Kd7 b4 Ke6 e4 Ke5 h5 f5 h6 g5 h7 a5 d3 c5 Kd2 c3+ Kc2 g4 b5 c4 b6 f4 b7 f3 Rh6 a3 Bd2 a4 Rg6 f2 Rb6 a2 Bc1 a3 Bb2 Ne7 Rb1 a1Q Re6+ Kf4 e5 a2 Rc1 Na6 b8R Nf5 Re8 Qh4 e6 Bc5 e7 Ng7 Nf3 g1Q Rd8 g2 e8Q g3 Ba3 Bg4 Bb4 Bh5 Rb5 Rc8 Rd5 Rc6 Qe6 Rd8 Be2 f1B h8Q Qe3 Qh3 g1Q Nd2 g2 Rd7 Qgf2 Rdb7 g1N Rd7 Nf3 Qe6 Nh2 Nb1 Bg2 Qhe8 Ng4 Ra5 Qe4 Q6g6 Qe6 Rb7 Qfe3 Bf3 Q3e5 Ra3 Q5f5 Bd5 Rd7 Qg1 Rdd6 Kd1 c2+ Kd2 Qaf6 Nc3 Qf6e5 Ra1 c1B+ Kd1 B1e3 Ra7 Bd2 Ra8 Bc1 Rb3 Rd8 Rb2 Rd7 Ne4 c3 Qd4 Rdd6 Qb8 Rd8 Qb6 Be3 Rd2 c2+ Kc1 Rdd6 Qc4 Rd7 Qb3 Rd8 Nc3 Rd7 Kb2 Rd8 Qa4 c1Q+ Kb3 Qd1+ Kb2 Qb3+ Kc1 Kg3 Qf6 Bg5 Qe7 Kf4 Qd6 Be4 Rh2 Bg2 Ra7 Rd7 Ra8 Nc7 Be4 Bg6 Qf8 Bh5 Bf3 Rd4 Bd5 Na6 Qfd8 Re4 d4 Re3 Qf8 Rd3 Qd6 Qa3+
N1q1b3/1r2qnqR/6q1/k4qQ1/NR2R1nN/R3KP2/p1r4r/1B1r2r1 w - - 0 1 legal: proof: e4 b5 d4 c5 h4 cxd4 a4 bxa4 e5 g5 e6 gxh4 Ke2 fxe6 Kd2 e5 Ke1 e4 b4 a5 Ba3 Bh6 Bb2 a3 Nc3 axb2 Nb1 a4 Ba6 Bf4 Be2 Bc7 Bf1 Ba5 bxa5 Ra6 Qd3 Ra7 Qd1 Ra8 Kd2 h5 c4 d5 g4 Kd7 a6 Kc7 g5 Kb6 f3 e5 c5+ Ka5 g6 e3+ Kd3 e4+ Ke2 a3 g7 h3 c6 h4 a7 d3+ Ke1 h2 c7 d4 Nd2 b1R Bg2 h3 Bf1 e2 Kf2 e1R Qe2 a2 Qd1 e3+ Kg3 e2 Kf2 Rb7 Ne4 d2 Nd6 d3 Rc1 Bd7 c8R Nh6 g8R Nc6 Qb3 d1Q Ne4 d2 Qb1 Ne5 Rg7 Nhf7 Rh7 Be8 R1c3 Qc2 Nd6 d1R Rb8 Qf5 Qc1 Qdc8 Qg5 Qg6 Nf5 Ng4+ Kg3 Qg7 Nh4+ Qf5 Rb3 Qg6 Rb4 Qg7 Rd8 Rc8 a8N Rc2 Rb8 Ra1 Rc8 Red1 Rc3 Qg6 Qc1 Qc8 Kf4 e1Q Bd3 Qe7 Ne2 Rb1 Rg1 h1Q Re1 h2 Qe3 Qg1 Ra3+ Ba4 Be4 h1Q Nc3 Qh3 Bd3 Ra1 Qd2 Qd4+ Re4 Qdg7 Qg2 Rg1 Qd2 Rad1 Qc1 Rh2 Bb1 Rhd8 Qd2 Rc1 Qg2 Rdd1 Qg3 Rcc2 Qg2 Ngh6 Ke3 Qhe6 Qg5+ Qef5 Rab3 Bc6 Na4 Be8 Ra3 Ng4+
1NnB3n/b2rb3/2b2r1b/2N3p1/2Qp4/BQ1br3/K1PN1qkr/r1QB4 w - - 0 1 legal: proof: e4 a5 g4 g5 f4 c5 b4 axb4 a4 f5 d4 cxd4 h4 fxe4 f5 h6 Rh2 Ra7 Rf2 Ra6 Rf4 Ra8 Ra3 Na6 Rg3 gxf4 g5 Nb8 g6 Ra6 Rg2 Ra8 Rg5 hxg5 Kd2 d5 g7 Kd7 a5 Kd6 h5 Ke5 a6 b5 a7 b3 f6 b4 h6 f3 h7 Kf4 f7 Kg3 Ba3 e5 Kc1 b2+ Kd2 f2 Qh5 e3+ Kd1 e2+ Kd2 e1B+ Kd1 b3 Be7 d3 Qh1 e4 Qh5 d2 Qh1 e3 Qh5 Nd7 Na3 b1R+ Ke2 d1R Nc4 b2 Qh1 Bb7 Bc5 Nb6 Ba3 Ne7 g8N Bc6 Nf3 Bb4 Nfd2 Ng6 Kd3 e2 Ne7 e1B Be2 f1B Nd6 Bh6 f8Q Nc8 Nb7 Qb6 Qg8 Qf2 Nc5 Ra1 Qe4 b1R Qc4 Kg2 Qb3 Rb8 a8Q Rb6 Qe6 Re8 h8B Ra6 Bf6 Nh8 Qe3 Rb6 Kd4 Ra6 Bh5 Bd3 Qc4 Rb6 Qa4 Ra6 Qab3 Rb6 Bb2 Ra7 Bc1 Rd7 Ba3 Rdc1 Bd1 Ra6 Nce4 Bc5+ Kc3 Ba7 Nc5 d4+ Kb4 Ra1 Qb2 Rab1 Kb3 Rb6+ Ka2 Ra6 Nde4 Bb4 Qbb3 Rb6 Nd2 Ra6 Bg4 Rh1 Bd1 Rh2 Qe1 Ba8 Nc6 Re3 Nb8 Bc6 Bd8 Rb6 Na4 Be7 Nc5 Bd5 Bh5 Rf6 Qc1 Bc6 Bd1 Ra1+
4N1q1/4rb1b/pnNRbQ2/rqrPQb2/1K1b2Q1/1n2b3/4Q2B/k2nQ3 w - - 0 1 legal: proof: c4 b5 f4 e5 a4 exf4 c5 bxa4 c6 g5 Nf3 dxc6 Ng1 c5 Ra3 c4 Ra2 Qe7 Ra1 Qd8 b4 g4 Ra3 h6 Rf3 h5 g3 Qd6 Bh3 gxf3 g4 Qe7 g5 Qd8 Bg4 hxg4 h4 Kd7 e4 Kc6 d4 Kb5 Kd2 c5 Kc3 f5 e5 a3 g6 g3 e6 a2 g7 a1N h5 g2 h6 f2 h7 f1B e7 f3 e8Q+ Nd7 Qe3 f2 Qh5 Ka4 b5 f4 b6 f3 b7 Nb3 b8Q Nb6 Qd2 Nh6 g8Q Ng4 Qbf4 Bg7 Qhf7 Bf5 Qgf8 B1d3 Q4d6 f1B Rh6 f2 Nh3 g1Q Re6 Ne3 Nf4 B1h3 Rf6 f1B Q8e7 Re8 Qee5 Re7 Kb2 c3+ Ka2 c4 h8Q c2 Qb8 c3 Qh4 Nd1 Qde2 Qd7 Be3 c1B Na3 c2 Qc8 Bh7 Ne6 Bdf5 Bh6 Be3 Nb5 c1R Nd6 Rc5 Ne8 Kb4 Qhe4 Kc3 Ka3 Qb5 Qg6 Qd3 Nd8 Bh8 Qf7 Qg8 Rd6 Be6 Qfg7 B3f5 Nc6 Bf7 Q4g4 Bh3 Qgf6 B5e6 Qge4 B3f5 Bf4 Bg7 Qe1+ Kc2 Qa6 Kb1 Bh2 Ka1 Qc4 a6 Qb5 Rc8 Kb4 Bh8 Qc4 Ra5 Qg4 Rcc7 Nd8 Rcc5 Nc6 Bg7 d5+ Bd4 Nb8 Bh6 Nc6 Bf4 Qc2 Be3 Qce2 Qb5+
q5b1/q1rR3R/2b2R1n/bQ1pp1nR/2R1Pnk1/5r2/NBK3b1/bQ2n3 w - - 0 1 legal: proof: g4 a5 b4 axb4 d4 c5 g5 cxd4 g6 fxg6 e3 g5 Bd3 g4 Bb5 Ra3 Bf1 Ra8 a3 h5 Bh3 g3 Nc3 b3 Na2 bxa2 Bg4 hxg4 Kd2 Kf7 c4 Ke6 f4 Kf5 h4 g5 c5 e5 h5 d5 c6 b5 a4 g2 h6 b4 h7 b3 a5 b2 c7 b1B a6 g3 a7 g4 Rh2 d3 Bb2 Bb7 c8Q+ Nd7 Kc3 d2 Qe2 d1B Rh4 Nh6 Qe1 Bc6 Nf3 g1N Ng5 g2 Ne4 g3 Rh5+ Kg4 f5 Bf3 f6 Ne2+ Kb3 g1Q f7 g2 Qa5 Nf4 Bd4 Bb4 Nc3 Rf8 h8R Bh7 e4 Bg8 Qb5 Ba5 Qcb8 Nc5+ Kc2 Ncd3 Rc1 a1B Rh7 Qe8 Q8b6 Rc8 a8R Rc7 Ra7 Qa8 Na2 Qe3 Bc3 g1N Bb2 Bg2 Qb8 Ngh3 Q8b7 Re8 f8R Ng5 Rf6 Rf8 Qb8 Rcf7 Rd7 Qea7 Kd1 Rc8 Rc4 Rc7 Kc2 Ne2 Re6 Rf3 Rf6 Nef4 Q8b6 Rh3 Qg1 Rf3 Qb1 Ne1+
3rb2Q/1B1b4/2n4P/BB2p1b1/1n1r2pk/RK4p1/1N1BbQp1/nq1Q1n2 w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 d5 g5 dxe4 g6 c5 Bc4 fxg6 Bd3 g5 Bf1 g4 a4 h5 Ra3 h4 Rg3 hxg3 Nc3 b3 Na2 Nh6 Nb4 cxb4 Ba6 Ng8 Bd3 Na6 Bf1 Nb8 f4 Kf7 d4 Kg6 Kd2 Kh5 c4 b5 h4 e5 f5 g5 f6 b2 Kc2 b1B+ Kb2 b3 c5 g2 f7 e3 c6 e2 a5 e1N a6 b4 a7 Bg6 d5 Bh6 f8B Bd7 c7 Ne7 c8B Bge8 d6 Qb6 Qc2 g3 Qd2 g4 Bb7 Bg5 Ne2 Nd5 Nc3 Nc2 Bb5 Nc6 Na4 Rd8 a8Q Rh7 Qd4 Rf7 Bd2 Rf4 Qf2 Rd4 Be2 Qb5 Ra1 Qd3 Ra3 Qf5 Kb1 b2 Ka2 b1N Bb5 b3+ Kb2 Ndb4 Qb8 Be6 d7 Bc4 Bd6 Be2 Bc7 Qe4 Ba5 Qd3 Bf4 Nd2 Qc8 Nf1 Bd2 Qe4 Kc3 b2 Kb3 b1B Nb2 Nce3 Qb8 Bbd3 Qd6 Nec2 Qdf8 Qh7 Q8f6 Bf5 Qh8 Ra8 d8Q Bfd7 Qb6 Rd8 Qg1 Kg6 h5+ Kf5 h6 Kg6 Ba4 Kh5 Bb5 Kh4 Qc5 Qg6 Qcf8 Qe4 Qff2 Qd3+ Bc3 Qd1 Bd2 Qb1 Qh1+ Nh2 Qhe1 Nf1 Qd1 Na1+
Rb1Rn1b1/P5B1/1N3r2/Q1P2rr1/p2K1Q1q/N1q3p1/q2b3n/k2r2rN w - - 0 1 legal: proof: f4 c5 d4 cxd4 g4 e5 g5 exf4 g6 a6 Kd2 hxg6 Ke1 g5 Bg2 g4 Bh3 Be7 Bf1 Bf8 b4 Qa5 a4 Qb6 a5 Qd8 b5 axb5 Bg2 Bd6 Bd5 Be7 Bb3 Bf8 Ba4 bxa4 Kd2 Ke7 Kd3 Kd6 c4 Kc5 e4 Kb4 h4 g5 h5 b5 e5 d5 a6 f5 h6 f3 h7 f4 c5 f2 e6 f1Q+ Ne2 f3 e7 f2 e8N g3 a7 g2 Qe1+ Kb3 Bb2 g1B Rh3 b4 Rh5 g4 Nf6 g3 Nc3 Bd6 Nb5 Nh6 Na3 Ng4 Nc4 Nd7 Rh6 Rg8 h8Q Bb8 Nh7 Qh4 Ne5 Ndf6 Bc1 Ne8 Nf7 Be6 Nfg5 Nh2 Nf7 Rg5 Nd8 Bg8 Rb1+ Ka2 Qf6 b3 Nb7 b2 Qa5 Qe1 Nd6 f1R Nf4 Be3 Nf8 Bd2 Nh3 Rff5 Nd7 Qe5 Rh8 Qe1 Nb5 Qe3+ Kc2 d3+ Kd1 Qe5 Nf2 Qc3 Nh1 d4 Qe5 Be1 Qe4 d2 Ke2 d1R Na3 d3+ Ke3 Rf6 Qf4 Bd2+ Ke4 Rg1 Nb6 Be1 Rh5 d2 Rh8 d1R Be3 Bd2 Bd4 Rff5 Bg7 Rf6 Rc1 Rgf5 Rc2 Ka1 Rc1+ b1Q+ Rc2 Qcb3 Kd4 Q1a2 Rc3 Bd6 Rd3 Qc3+ Ke4 Rc8 Rd5 Bb8 Rd8 Qc1 Kd4 Rc7 Nf2 Rcf7 Nh1 Rg5 Rh6 Rff5 Rc6 R7f6 Rcc8 Bc7 Ra8 Bb8 Rd7 Qcc2 Rd8 Qc3+
1B2r3/1K2PR1R/Np1BP2b/6n1/1Brrn2p/1rqn1brp/2P3N1/kn6 w - - 0 1 illegal: Other
Kb3b2/5pP1/P1R1Pnp1/n1n1Nrk1/1N2r3/1qb5/2b1rQn1/1b1Q1B1Q w - - 0 1 legal: proof: b4 a5 g4 axb4 c4 e5 a4 d5 g5 dxc4 g6 e4 Bb2 e3 Bf6 gxf6 g7 f5 Ra3 f4 Rd3 Bf5 Rd6 Bc8 Rg6 hxg6 Qc1 exf2+ Kd1 Rh4 Kc2 Bh3 Qd1 Rh8 Kc1 Bc8 Kb2 Ke7 e4 Kf6 h4 b5 d4 c5 h5 c3+ Kb3 f3 a5 c2 e5+ Kg5 a6 c1B h6 c4+ Ka2 b3+ Ka1 b2+ Ka2 c3 Kb3 c2 d5 b4 Kc4 b3 Kb5 Nd7 Kc6 Nc5 h7 Bf5 d6 Nf6 d7 Qb8 d8Q Bf4 Rh3 c1B Q1d5 Bcd2 Bg2 f1N Qe8 f2 Qc8 Bc2 Qb7 Bc3 Qd1 Ne3 Qb6 f1R Na3 b1B e6 b2 Qa7 Qb3 Rh4 Bb8 Rc4 Rf5 Bf1 Ng2 Nf3+ Kh5 Ne5+ Kg5 Qc7 Ra7 Qb6 Rd7 Qa7 Rd4 Qb6 Nd3 Kb7 Re4 Rc6 Nc5+ Ka8 Ba2 Nd3 b1N Nc4 Nd2 Nce5 Nc4 Nb4 Na5 Qa7 Bab1 Qb6 Rg8 h8Q Re2 Qh3 Rh8 Qh1 Rh4 Qa7 Rhe4 Qb6 Ncd7 Qf2 Nc5
1NRN4/1R1r3P/2n1n3/P2q3K/1b1qP3/7Q/1QnNkn1r/q1r1bb1n w - - 0 1 legal: proof: b4 d5 a4 a5 g4 axb4 c4 e5 cxd5 h5 f4 exf4 g5 b3 Bh3 b2 g6 bxc1Q Bg4 hxg4 Na3 Qc2 Nb5 Qxg6 Na3 Qb1 Kf2 Kd7 h4 Kd6 d4 f5 e4 g5 a5 b5 h5 c5 h6 g3+ Kf3 c4 Qc1 g4+ Ke2 b4 Rh4 g2 Qd1 b3 Kf2 f3 Kg3 f4+ Kh2 f2 Rh5 f1R Rh4 b2 Ra2 f3 Kg3 c3 Qd3 c2 Ne2 g1N Rh1 c1B Nc3 f2 Nd1 Ba6 Ra1 Nc6 Nc2 Bd2 Nce3 Nh3 Rh2 Ra7 Qc4 Rd7 Ra3 Ng5 Kh4 g3 Nc2 g2 Nc3 g1Q Qb5 Nf6 Rb3 Rc1 Nb4 Ng4 Kh5 Qa1 Nb1 Be1 Nd2 b1N Qb7 Bf1 Na6 Ne6 Nb8 Na3 h7 Nc2 Rhh3 Rg8 Rhc3 Be7 Qb5 Rf8 Qe2 Rf3 Rb7 Rh3+ Kg6 Rh2 Rc5 Bh3 Kh5 f1N Qd3 Bg2+ Qh3 Nf2 Rc3 N6b4 Rc8 Ng3+ Kg6 Ngh1 Kh6 Bf8+ Kh5 Ke7 d6+ Kf6 d5 Ke5 Nb1 Kf4 Nd2 Rf7 d7 Nc6 d6 Bf1 Nb3 Qg8 Nd2 Qdf6 d8N Qfd4 d7 Bb4 Nf3 Ke3 Nd2+ Rf3 Nf7 Ke2 d8Q Rg3 Qb6 Rg7 Nd8 Rd7 Qb5+ Qd3 Qe5 Qg7 Qb2 Qgd4 Qb1 Qb3 Qb2 Qbd5+
1r1N1rq1/1R2NBp1/3bQ1P1/3Pn1Nq/4n1P1/P1pkb2q/K4n2/bb4n1 w - - 0 1 illegal: Other
8/qrPk1Nbn/P2N1Pnb/3P2Nq/q1R5/1n2q1Qb/2K3b1/r2R1rb1 w - - 0 1 legal: proof: e4 d5 h4 c5 c4 a5 b4 axb4 h5 f5 h6 fxe4 Ba3 b3 Rh5 b2 Bb4 cxb4 c5 gxh6 Rh3 h5 Bc4 dxc4 Rh1 h4 a4 h5 d4 e5 Kd2 b5 f4 e3+ Kc2 h3 g4 c3 a5 e4 c6 h2 d5 h4 g5 e2 f5 e1B g6 e3 f6 h3 g7 b3+ Kd3 b4 c7 c2 Qf3 c1B Na3 b1N Qd1 b2 Qb3 e2 Nc4 Kd7 Nd6 Ne7 g8N Bf2 Nf5 e1Q Nf3 Qe8 Qc4 b3 Qc3 Nd2 Qc2 b1Q Rg1 h1Q N5h4 b2 Rf1 h2 Kc3 Nb3+ Nd2 Ng6 Kd3 Q1e3+ Kc4 Qa2 Nh6 b1R Re1 Bg1 Nf7 Bg7 Rf1 Ra7 Nh6 Rb7 N4f5 Qa3 Ra2 Ra1 Qc3 Qhf3 Qd3 h1B Kc3 Bg2 Kc2 Qh5 Rd1 Qa7 a6 Qa4 Qc3 Qee3 Nd6 Re8 Ra3 Re4 Qd3 Rf4 N2e4 Rf1 Qc3 Qed4 Nhf7 Bch6 Neg5 Qe3 Qc5 Nf8 Qc4 Nh7 Qh4 Nc6 Qg3 Ne7 Ra2 Qb5 Ra5 Qa4 Rc5 Ng6 Nf5 Ke8 Rc4 Be6 N5d6+ Kd7 Nc8 Bg4 Ncd6 B4h3
Q3Br2/4K3/N2B4/nnNqn2b/1b2p2R/2b2nn1/k2p2B1/qrQRn1QR w - - 0 1 legal: proof: e4 a5 d4 g5 h4 gxh4 b4 axb4 e5 c5 e6 cxd4 Rh2 fxe6 Rh3 e5 Rh1 e4 Ke2 Kf7 a4 Ke6 c4 h5 f4 d5 g4 b5 c5 b3 c6 b2 c7 b4 g5 h3 g6 h4 g7 e3 Kd3 h2 a5 e2 a6 e1B a7 h3 Nc3 b1Q+ Qc2 b3 Bb2 Nd7 Nce2 Rb8 a8R Bc3 Ba3 b2 Nc1 Ne5+ Ke2 d3+ Ke3 d2 Bb4 d1N+ Ke2 d4 f5+ Kd5 f6 Kc4 f7 Qd5 Qg6 Bg4+ Nf3 Bh5 Nd3 Kb3 R1a4 Qa1 c8Q b1N Bg2 Nd2 Bd6 e6 Rc4 Ne7 g8B N7c6 Nb4 Na5 Na6 Ka2 Qg7 Be7 f8Q Rb1 Bf7 Rg8 Be8 d3+ Ke1 Rh8 Ng5 Ndf3+ Kf1 d2 Ke2 Rg8 Rh4 Rh8 Ne4 Rg8 Bb8 Beb4 Nec5 Rh8 Bd6 Rg8 Re1 h1N Qg3 Nhf2 Rh1 h2 Qgg7 Nb2 Ke3 Nbc4+ Kf4 Na3 Rd1 h1N Qcc7 Nd4 Kg5 Ndf3+ Kf6 Ng3 Ke7 Nfd3 Qg4 Nde1 Qd4 Nb5 Qg1 Nh2 Qf3 Rf8 Rb8 Qd4 Qa8 Nhf3 Rb6 Bf7 Rh1 Bb2 Ne4 Ng4 Bc5 e5 Rbh6 Qd5 R6h4 Bh5 Bd6 Bd4 Qc1 Bdc3 Nec5 e4 Kd7 Nge5+ Kd8 Ng5 Ke7 Ngf3
b3r3/2N2R2/B3K1kN/2Qpb2p/n1bp3b/2NN3r/1RbqR1p1/B1N2n2 w - - 0 1 legal: proof: d4 e5 f4 exf4 a4 c5 g3 fxg3 Bh6 gxh2 Bc1 b5 axb5 cxd4 Kf2 g5 Kf3 a5 Ke4 h5 Ke5 f5 b4 Kf7 e4 d5 c4 f4 b6 a4 b5 f3 b7 a3 c5 a2 b6 f2 c6 g4 c7 g3 Nc3 Bb4 Bb2 Na6 b8N Ne7 b7 Qg8 Nd7 Kg6 b8R Nf5 Qc1 Bb7 c8N Nc5 Nge2 Ra3 Nd6 Ne3 Nf5 Na4 Nh6 Ba8 Nc5 Ba5 Rb1 a1B Rf8 Bb4 Rg1 h1B Nd3 Qg7+ Ke6 Bd6 e5 Be4 Rf3 g2 Rf7 Rb8 Qc2 Qh8 Nec1 Re8+ Kd7 Qg8 e6 Be5 e7 Qf8 Be2 Nf1 Ke6 Qg8 Rh1 Qg7 Rh3 Qh8 Re3 Qf6+ Kd7 Qg5 Ke6 Qf4 Nb5 Rb3 Qc5 Qg5 Nc3 Qf4 Ne1 Bc2 Ba6 Ra3 Re2 Qd2 N3a2 Rh3 Ned3 Bb3 Bc3 Bc2 Rb7 Bb2 Rb5 Ba3 Ba1 Bb4 Nc3 Ba5 Rb2 Bd8 Bb5 Rh8 e8N Bh4 Nc7 Re8+ Re7 Ne3 Ba6 f1B Rf2 Be2 Rf7 Nf1 Nf2 Ne3 Kd7 Bc4 Nfd3 Bh8 Kd6 Nf1 Re2 Be5+ Kd7 Rc8 Ke6 Re8+
r1b2Kq1/N1R5/2rkr1q1/r1q1r3/B1b2nrN/6B1/qN1n1Q1b/N1BR1N2 w - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 d4 axb4 f5 c5 f6 cxd4 Bh3 exf6 Bg2 f5 Bf1 f4 Kf2 Ke7 c4 g5 e4 d5 h4 f5 a4 b5 h5 g3+ Kf3 d3 a5 g2 e5 b3 a6 d4 a7 b4 h6 g4+ Kf2 g3+ Kf3 b2 c5 b3 c6 d2 c7 d3 e6 Qe8 h7 Nd7 Nh3 g1R Bg2 Qg6 Ra2 Ngf6 Qf1 d1R Qe1 d2 Qf2 Nh5 Ra5 Nb6 Re5 Rde1 Ng5 d1R Bh3 g2 Ne4 Rd5 Na3 b1Q Ng3 b2 Nf1 Qa2 Nc2 b1Q Na1 Kd6 e7 Ra5 Rc5 Re6 Bg4 Rg8 h8B Nc4 Bf6 Rh8 Bh4 Rh6 Bg3 Qh7 Bh3 Re5 Bg4 Rhe6 Bh3 Qb5 Bg4 Qe8 Bh3 Qeg6 e8N+ Kd7 Bg4 Rc6 Ng7 Kd6 Nd2 Rge1 Nf1 g1Q Bh3 Re6 Bg4 R1e5 Bh3 Rb8 a8N Be7 Nb6 Rba8 Na4 Bf8 Qe1 Qd4 Nb2 Nd2+ Kg2 Qc3 Qf2 f3+ Kh2 f4 Nf5+ Kd7 Bg4 Bd6 Kh3 Qd4 Rc4 Qc5 Nh4 Ke7 Bf5 Kd7 Bc2 Ke7 Qg2 f2 Ba4 f3 Qg1 Qgb1 Kg4 Nf4 Ne3 f1B Qf2 Be2 Rd1 Kd7 Rc3 Bc4 Nf1 Qbd3 Qg2 f2 Qg1 Bb7 c8N Bb8 Na7 Kd6 Qg2 Bc8 Qf3 Nh3 Qf5 Nf4 Kg5 Qe4 Ne3 f1R Rc2 Re7 Kf6 Rg1 Nf1 Rg2 Be1 Rg4 Bg3 Ng6 Qf2 Nf4 Rc3 Re8 Rb3 Qc2 Rb7 Qcd3 Rg7 R8e6+ Kf7 Qdg6+ Kf8 Re4 Qe1 Kd5+ Re7 Ne2 Bf2 Bh2 Bg3 Nf4 Qe2 Kd6 Rc7 R4e5 Qf2 Qhg8#
4n3/2K3bk/1R1r2qr/qB1Q2RB/BnRpNn1q/np3pNn/5B2/3b1B2 w - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 d4 gxh4 f5 c5 f6 cxd4 Bd2 exf6 Be3 f5 Bc1 f4 Kf2 b5 Kf3 d5 g4 h5 e4 f5 a4 Kf7 c4 Kg6 a5 b3 g5 h3 e5 d3 c5 d4 a6 d2 a7 h2 e6 b4 e7 h4 e8R h3 c6 b2 c7 b3 Bc4 Kh7 Ra5 Nf6 Re6 Nc6 Bf1 Nb4 Rb6 Bg7 Nc3 b1N Nge2 Na3 Ne4 Qd5 Qe1 d1Q Be3 Qc2 Ng3 Bd7 Rg1 h1N c8B h2 Ra4 Qa5 Bca6 Nf2 Bab5 Nh3 Bf2 Rad8 a8B h1Q+ Rg2 Bc8 Bac6 Rd6 Qc1 Qb1 Qc5 Ba6 Qd5 Bb7 Ke2 f3+ Kd2 f4 Be8 Nbc2+ Kd3 Qh2 Rc4 Nb4+ Kd2 Ba6 Ba4 Bc8 Beb5 Bg4 g6+ Kh6 Be3 f2 Rg1 Bd1 Rg2 Bf8 g7 Kh7 Rg1 f3 g8B+ Kg6 Bf7+ Kh7 Bh5 Bg7 Ne2 Qf4 Rg5 Qg4 N2g3 Qh4 Nc3 Qf5 Nce4 Qg6 Be2 Nc6+ Kd3 f1N Bf2 Ne3 Bf1 Ng2 Rc2 Nb1 Kc4 Na3+ Kc5 Ngf4 Rc4 Nb4 Rc6 Qa8 Kb6 Qa5+ Kb7 Qf5 Rb6 Qg6 Qf5 Kg8 Qe5 Rh6 Qd5+ Kh7 Kc7 Ne8+
4B2n/Bqp2Nbr/r1r2p1B/5b2/n3bN2/1QR1q1b1/3kr2B/QKb2B1R w - - 0 1 illegal: No possible last move, all moves rejected
8/b1RNpBk1/2B3q1/1r2R1n1/3q1b2/1bRQn2Q/K2N3n/1nBn1Rnr w - - 0 1 legal: proof: b4 a5 h4 g5 a4 gxh4 d4 f5 e4 fxe4 Nf3 c5 Ng1 b5 axb5 axb4 Qd3 cxd4 Qd2 Ra2 Qd1 Ra8 Kd2 Kf7 c4 d5 Kc2 h5 Kb2 b3 g4 h3 f4 d3 f5 h2 f6 h4 g5 h3 c5 d4 b6 d2 c6 e3 c7 e2 b7 e1B Nc3 d3 Na2 Bf2 Qc2 d1N+ Kb1 b2 Nb4 d2 Nc6 Ra5 Ba6 Be6 c8Q Nd7 b8R Nh6 Rb7 Ne5 Na7 Rb5 Ra3 Nf3 Rc7 Qd4 Bb7 Ng4 Rac3 Nde3 Nc6 d1N Qd3 Bh6 Nb8 Bb3 Bc6 Rh7 Qcf5 Kg8 g6 Bf4 f7+ Kg7 f8R Ng5 Nf3 Rh4 Rf1 h1Q Rc2 h2 Nd7 Qg1 Rc3 h1N Nd2 Nh2 Qh3 Ng3 Rf5 Ne2 Re5 Qg4 Rf5 Ng1 Re5 Ba4 Ka2 b1N Be4 Qg2 Bc6 Bb3+ Ka1 Kh6 g7 Qg4 g8B Kg7 Bgd5 Qh5 Bf7 Qg6 Qg3 Nhg4 Qf3 Rh1 Qh3 Nh2 Bg2 Nd5 Qe2 Qde4 Qed3 Ba7 Bf3 Qb4 Be4 N5e3 Bc6 Bc2 Ka2 Qd4 Rc4 Ba4 Rc3 Bb3+
1qR1b2R/4Q1Q1/2Q1nN2/1r1b2NB/3p4/bpb5/bBBq2k1/r1BK2nb w - - 0 1 legal: proof: h4 f5 e4 c5 exf5 a5 b4 axb4 d4 cxd4 a3 bxa3 Qd2 g5 Qd1 gxh4 g4 Kf7 c4 Kf6 f4 d5 c5 h5 c6 b5 c7 e5 Be2 a2 Bf3 b4 Qd2 e4 Rh3 d3 Na3 d4 Rh2 h3 Nc2 h4 Re2 h2 Nh3 h1B Ba3 e3 Qd1 Bd7 c8Q Nh6 Rb1 a1B Rh2 e2 Bc1 Nc6 Ng5 h3 Ne3 Ne5 Qc6+ Be6 Rb3 Qb8 Rc3 Nhf7 Rc5 Rh5 Nd5+ Kg7 f6+ Kh6 f5 Bc3+ Qd2 Nd8 f7 Ra1 Nf6 Ba2 Be4 b3 Rc4 Bg7 f8B Ne6 Ba3 Bf8 Bb2 Ba3 Rc5 Bf3 Rh1 h2 Rc4 Ba5 Qb4 Bg2 Rc3 Bf3 Qe7 d2+ Kf2 d1B Bc2 Bd5 Ke1 Bd8 Qa6 Bb6 Rc8 Bbc5 Qc6 Nf3+ Kf2 Ng1 Ke1 Qb7 Nd7 Qa8 f6 Qb8 f7 Bb6 Nf6 Ba5+ Bd2 Bc3 f8Q+ Ng7 Nge4+ Kg6 g5 Kf5 g6 Ne6 g7 Rg5 g8B Rh5 Ne8+ Kg4 N8f6+ Kf3 Bf7 Kg2 Be8 Re5 Ng5 Rf5 Qfg7 Re5 Bb1 Bc2 Bh5 Bg6 Bc1 Be8 Bc2 Bcb4 Bc3 Rf5 Kd2 e1Q+ Kd3 Qf2 B3b2 Bc3 Ng4 Qff4 Nf6 Nh3 Ke2 Re5+ Kd1 Qf2 Re1 h1B Re3 Ng1 Rh3 Be4 Be2 Rb5 Rh8 Bd5 Bh5 Qd2#
1kbQ1Qr1/1q1QR3/r1rnqrR1/1n1q2rr/1b3NKB/r7/5qB1/2Q1B1N1 w - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 d4 axb4 f5 c5 f6 cxd4 Bh3 exf6 Bg2 f5 Bf1 f4 Kf2 b5 c4 g5 a4 d5 e4 Kd7 h4 Kc7 a5 f5 e5 b3 a6 d3 e6 b2 h5 b4 c5 d4 h6 f3 Kg3 f4+ Kf2 b3 c6 g3+ Ke1 g2 Kf2 g4 e7 g3+ Ke1 f2+ Kd2 f3 e8Q Bb4+ Nc3 b1R h7 b2 a7 Qd5 Rh3 Nh6 Rh4 Qe6 Qg6 Na6 Qf6 Nf7 Rg4 Nd6 Be2 f1R Rg6 f2 Ra5 Ra1 Ra4 b1Q Bf3 Ra3 Ne2 g1R Qf4 g2 Qf8 Rg8 h8B Rh1 Bf6 g1Q Qe1 Rh5 Nf4 Qg2 Kd1 d2 Nce2 Qbf5 Bh4 Qb5 Qh6 Qb7 Ng1 Qh2 Be4 Qg3 Ke2 d1R Bd2 Rc1 Qh8 Qh2 Qf6 d3+ Kf3 Rc2 Bc3 d2 Qf8 Rc1 Qd1 Rc2 Qc1 d1Q+ Nfe2 Qdd5 Nf4 Nc5 Ra5 Nb3 Be1 Rc4 Rc5 Rc2 Rc3 Ra6 Re3 Rc4 Qf5 Nd4+ Kg4 N4b5 Bg2 Rc3 Re2 Rca3 Rg5 Rb8 a8Q Rg6 Qa7 Ra8 Qb6+ Kb8 Qd8 Rg8 Rg6 Rc3 Qe3 Raa3 Qd4 R8a6 Q4f6 Rc2 Qff8 Rc5 Bd2 Rfc1 Be1 f1R c7+ Ka7 Bf3 Qf2 Bg2 Rcc6 Re5 R1c5 Re4 Qf7 Re8 Qfe6 Re7 Qf6 Qdd7 Qe2+ Nf3 Rcb6 Bhf2 Qfe6 Nh3 Qda2 Qh6 Rbc6 Qd8 Bd7 Qc1 Qed2 c8Q Qdb2 Qcc7 Bc8 Qcd7 Kb8 Nfg1 Re5 Nf4 Qad5 Nd3 Qc2 Bh4 Qcc5 Kg3 Qcb6 Qf7 Rf6 Qff8 Ref5 Kg4 Qf2 Nf4 Rfg5#
3nN3/bQR4q/q1qB2rn/4K1N1/3NpQq1/1b3Br1/B2n4/1BRbbkq1 w - - 0 1 legal: proof: e4 a5 d4 g5 h4 gxh4 b4 axb4 e5 c5 e6 cxd4 Rh2 fxe6 Rh3 e5 Rh1 e4 Ke2 Kf7 a4 Ke6 c4 Kf5 f4 Kg4 c5 Kg3 a5 b5 f5 h5 c6 e5 c7 d5 a6 e3 Kd3 Kf2 g4 e2 a7 e1B f6 h3 f7 h4 g5 h2 g6 b3 g7 b2 Qh5 b4 Ne2 h3 Qg5 b3 Qh6 Nc6 Bg2 Bc5 f8N Be6 c8B Qf6 Ra3 Nd8 Qh5 Rh6 Qg4 Rg6 Bd2 Nh6 Rg1 h1Q g8B h2 Nbc3 b1N Bg5 b2 Ra6 Nd2 Rc6 Bf7 Rc7 Qa6+ Nb5 Be6 Kc2 d3+ Kc3 b1Q Bf4 e4 Nd6 Qbb5 Nh7 Qbc6 Bf3 Qg2 Ng5 h1Q Qf5 Qg4 Ne8 Qhh4 Bd6 d4+ Kb2 Bd5 Qf4 Bb3 Bce6 Rb8 a8Q Ba7 Qb7 Qh1 Rg3 Kf1 Bd5 Qg1 Rh3 Qgd7 Rh1 Qh7 Bdf7 Nb1 Bc4 d2 Bd3 d1Q Bd5 Nd2 Bb1 d3 Nd4 Bc2 Bda2 Bb3 Qc8 Rb6 Qb7 Rg8 Nh3 Rg3 Ng5 Qd5 Kc3 Rc6+ Bc5 Rg6 Bd6 Qdc6+ Bc5 Nc4+ Qd2 Bf2 Bh5 Kg2 Nde6 Qh2 Bd6 Qf3 Re1 Qg1 Rc1 Qf5 Bd1 Kf1 Qf4 d2+ Bf3+ d1B Bc5 Ne3 Kd4 Qg4 Ke5 Be1 Ba3 Qc2 Nd4 Nc4+ Kd5 Nd2+ Ke5 Qc3 Bd6 Qcc6
4N2N/B3pn1N/1Nr5/pR1rb2k/3bqqn1/QNb2Qn1/2KQ2np/5B2 w - - 0 1 legal: proof: e4 b5 d4 c5 f4 cxd4 a4 bxa4 e5 g5 e6 fxe6 Bd2 e5 Bc1 e4 g4 Qb6 b4 Ba6 f5 Kf7 Ra3 Qa5 Rf3 Qc7 Rf4 gxf4 h3 Be2 g5 Bg4 hxg4 Ke8 Qd2 Qc8 Qd1 Qd8 Kd2 Kf7 c4 h5 c5 a5 b5 d5 c6 a3 b6 f3 c7 a2 c8Q a1B f6 Kg6 f7 e3+ Kc2 e2 b7 e1B Na3 h4 Bb2 f2 Rh3 Nd7 b8N Rh6 Qd2 Ne5 Qb7 Qd6 Na6 Nf6 Nf3 Bg7 Nc7 Rd8 Nc4 Qc6 f8Q Nf7 Ne8 Qe6 Qb3 Qe4+ Qbd3 Nh5 Rg3 h3 Nb6 h2 Ba3 Be5 Bc5 Nf4 Rh3 Ng2 Rh5 Nd6 Qff4 Nf7 Qfe3 Qf5 Qde4 Rd7 Qa3 d3+ Kc1 Rd6 Nd4 Rc6 Nb3 d4 Qf3 Qf4 Qde3 d2+ Kc2 d1N Qee2 Bec3 Qd2 Kh7 g6+ Kh8 g7+ Kh7 g8N Kg6 g5 d3+ Kc1 Nde3 Ngf6 Ng4 Nh7 Rd6 Bd4 Rd5 Be3 Bcd4 Kd1 Bac3 Kc1 Kf5 Kd1 Rc6 g6+ Ng5 g7 Kg6 g8N Nf7 Nh6 Qe4 Be2 f1N Kc1 Ng3 Bf1 Nd6 Nf7 Qf4 Qdb2 d2+ Kb1 d1Q+ Qc1 Qe1 Kc2 Nde4 Qd2 Qe2 Rf5 Ng5 Nh8+ Kh5 Bf2 Bg7 Nd7 Bde5 Ba7 Bed4 Nb6 Bge5 Rf6 Nf7 Re6 Rd8 Rd6 Qee3 Rd5 Rdd6 Rc5 Rd5 Rb5 Qee4+
2N3bR/Q2Qp2B/2n1Q1R1/nnBnb2B/6qK/2qR2Bb/rq2k1r1/2r5 w - - 0 1 legal: proof: d4 b5 g4 f5 f4 c5 a4 cxd4 axb5 g5 e4 fxe4 Nd2 gxf4 Ndf3 h6 g5 h5 Ne5 Ba6 Ng4 hxg4 Rb1 Bb7 Ra1 Bc8 Kf2 Kf7 h4 Ke6 b4 Kf5 c4 d5 b6 a5 b7 e3+ Kg2 Ke4 g6 d3 h5 f3+ Kg3 d2 h6 e2 g7 Kd3 b5 d4 b6 a4 c5 f2 c6 a3 c7 a2 h7 Nf6 g8R Nd5 Bg2 e1Q Rh2 Nc6 b8B Bg7 b7 Be6 c8B Qb6 Bc7 Be5+ Kh4 g3 b8Q f1B Ne2 Qb2 Rg6 Rg8 Bf3 g2+ Ng3 g1Q h8Q Bfh3 Qf6 Qee3 Rb1 a1N Bh5 Ra2 Qa7 Nb3 Nf5 Nba5 Nd6 Bf7 Qa4 d1N Qe6 N1c3 Rh1 Qf3 Be3 Nb5 Rd1+ Ke2 Rd3 Qgc1 Bb7 Qcc3 Nc8 Rg7 Bd6 Bg8 Bc5 Nf4 Bf2 Nd5 Rh6 Rg2 Rg6 Qe1 Bg3 Qec3 Rdd1 d3 Qd4 Nb6 Qdd7 d2 Rh2 Nd8 Be4 Nd5 Rg4 Ndc6 Bh7 Qf5 Rg6+ Qff3 Ra1 d1R Rh1 Rdg1 Rd1 Bg4 Rd3 Rc1 Rf1 Qe4 Rf8 Qf3 Rd8 Bh3 Re8 Bf7 Rh8 Bg8 Rg4 Qf5 Rg6+ Qg4+
1RR5/r2b2bK/3B1b2/BN5P/2qnq1k1/1rqN1b2/B1NRp1rQ/2b1n2b w - - 0 1 legal: proof: e4 a5 d4 h5 g4 hxg4 b4 axb4 e5 c5 e6 cxd4 Qf3 fxe6 Qd3 e5 Qd1 e4 Ke2 Kf7 h4 Ke6 a4 Kf5 c4 d5 f4 b5 h5 g5 c5 e5 a5 b3 a6 g3 a7 b2 c6 e3 Kd3 g2 c7 g4 Rh2 g3 Nd2 b1Q+ Qc2 b4 Nc4 e4+ Ke2 d3+ Ke1 b3 Qa2 d2+ Ke2 d1B+ Ke1 d4 Rh4 d3 Nd2 b2 Rh3 e2 Rh2 Bd7 c8N Kg4 f5 Ne7 f6 Rg8 f7 Nd5 Nh3 g1B Qa6 g2 Qb5 Bg7 f8B Nf4 Nd6 Nc6 Nb3 B1d4 Kd2 g1B Qe5 Qc8 Nb5 Ng2 Bd6 Ne1 Nf4 Bde3+ Kc3 d2 N3d4 Ba4 Ra3 d1B Nd3 Qa2 Rb3 b1R Bca3 Bc1 Nc2 e3 Bab4 Qa3 Kc4 Nd4+ Kd5 Qc4+ Ke4 Bf6 Rc3 Rb3 Ba5 Bf2 Bg2 Bg7 Bf1 Bh4 Rf2 Bhf6 Qh2 Qf7 Rc5 Qc4 Rc8 Qa1 Rb8 Qac3 Rc8 Rb8 a8R Rb7 Rab8 Ra7 Re8 Ng2 Rec8 e1Q Rd2 Qe2 Nc7 Ne1 Bh3+ Kh4 Kf4 Bac6 Nb5 Bh1 Bg2+ Bh3 Be4 Qg2 Bf5 Bf3 Be6 e2 Bg4 Ne6+ Kf5 Nd4+ Kg6 Rf8 Nc5 Rg8 Kh7 Kg5 Be6 Bhg4 Bf7 Bd7 Nd3 Kg4 Rc5 Qf2 Rcc8 Qe3 Bd5 Qe8 Bf7 Qe4+ Bg6 Qa8 Nca3 Kg5 Nf4 Bh6 Bb1 Qac6 Nc2 Qe4+ Ng6 Kf5 Nf4 Rg2 Nd3 Bhg7 Ba2 Kg4#
1B1qBR1b/4k2b/1q1nn2p/1Bb3rN/rbP1Q2b/2Nr4/K2n4/1Rb3QN w - - 0 1 legal: proof: e4 b5 d4 c5 h4 cxd4 a4 bxa4 e5 g5 e6 gxh4 Ke2 fxe6 Kd2 e5 Ke1 e4 Kd2 d5 g4 a5 f4 e5 c4 h3 Kc2 h2 b4 h6 Kb2 e3 f5 e4 g5 d3 g6 e2 g7 e1B b5 a3+ Kb3 e3 b6 a4+ Ka2 d2 f6 e2 f7+ Ke7 b7 d4 Bh3 d3 Bf5 Nd7 b8Q Ngf6 g8B Bh4 Qb7 e1B Ne2 Ne4 Qdb3 d1Q Qd5 d2 Bh3 Qb6 Qa5 Nd6 Bg4 Nc5 Qab4 Bf5 Qf3 Ne6 Qd3 Bh7 Rg1 h1N Nbc3 Ng3 Rf1 Ne4 Ng3 Ra5 Bh5 Rg5 Nh1 Bef2 Rb1 Bc5 Qb5 Bb4 Qe5 Bc5 Qg7 Bb4 Ka1 a2 Qgd4 Bc5 Qg1 Bb4 Kb2 a1B+ Ka2 a3 Bg4 Bb2 Qde3 Bg7 f8N Bd4 Bf7 Bdc5 Nd7 Ra8 Nf6 Ra5 Nh5 Ra4 Ne2 Bh8 Be8 Bb2 Qd3 Bh8 Qc2 Bb2 Rf8 Bh8 Kb3 a2 Nc3 a1B Ba3 Bb2 Ka2 Bc1 Qd3 Nf4 Bgd7 Ne6 Qdd4 Qe2 Qde3 Qd3 Bb5 d1R Qd4 Nd2 Qe4 Qd5 Nf4 Nf5 Qe5 Bcf2 Nce2 Nf1 Bbd7 Bd6 Nh5 Rd3 Nc3 Nd2 Qe4 Qa8 Bc6 Qad8 Bb5 Ra6 Na4 Ra8 Bb2 Bb4 Be5 Bfc5 Bc7 Nd6 Bb8 Bba3 Nc3 Ra7 Qe5 Ra4 Qe4 Bab4+
nBB1K3/1NrNrR1n/b1kr2Q1/bR6/1q1q1br1/7n/1p4Pp/r1B2RQ1 w - - 0 1 illegal: No possible last move, all moves rejected
2Q2R1N/1rB2Bb1/pp6/1N3PrN/Q1n5/rn1rQ3/2bRKnbq/k1qb4 w - - 0 1 illegal: No possible last move
nN1qB1r1/B5k1/q1p5/1RRQ2r1/p3q1rN/bBn1P3/2pqQ3/qQ1b3K w - - 0 1 legal: proof: f4 b5 h4 g5 a4 bxa4 c4 gxh4 f5 d5 f6 dxc4 Nh3 exf6 Ng1 f5 Ra3 f4 Ra2 Qf6 Ra1 Qd8 Kf2 h5 b4 a5 g4 f5 Kg2 Kf7 d4 c6 e3 c3 d5 c2 b5 a3 b6 f3+ Kh2 a4 d6 f2 b7 h3 d7 h4 g5 f4 g6+ Kg7 Ba6 f1R Bb2+ Nf6 Qd5 a2 Nd2 f3 Be2 f2 Ne4 Rg8 Qc4 Ba3 Rb1 a1Q Bh5 Ra5 Bd4 Na6 b8Q Nc7 Nf3 Rg5 Nc5 Rfg1 Na6 f1Q Ba7 Na8 Rb5 Ne4 Qe2 R1g4 Rc5 Qd4 Qb1 Nc3 Nb8 Qd2 Rg1 Ba6 Kh1 h2 Rb5 Qf8 d8Q Bc8 Qd5 Qd8 Qf2 Qfe2 Rc5 Qa6 Qe2 Bd7 Qa1 Bf5 Rb1 Bd3 Rbb5 Bc4 Qee1 Be2 Qab1 Bd1 Qe2 Rg2 Qdb3 Kf8 g7+ Ke7 Qc1 Kf6 Qd5 R2g3 Be8 R3g4 Qg2 Be2 Qa1 Re4 Qg4 Rb4 Kg2 h1Q+ Kf2 h3 Nh4 h2 Qb2 Qhc1 Kg2 Qa1 Qb1 Rf4 Kh1 Bd1 Qe2 Re5 Kg2 h1Q+ Kg3 Qe4 Kh2 Qed4 Kg2 Rg4+ Kh1 Reg5 Qe4 Rh8 g8B Kg7 Bb3 Rg8 Qd5 Qe4+
5nBr/3Bb1pQ/2Rp1q1B/bnpQ3P/1kr1b3/R1rR2K1/q2bn1N1/4N3 w - - 0 1 illegal: No proof kernel
bQ1RK2b/5nb1/7r/2B3kp/p1nRR3/bN1nPp2/B2QQ1nb/1r3qN1 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 bxa4 c4 gxh4 f5 d5 f6 dxc4 Nh3 exf6 Ng1 f5 Ra3 f4 Ra2 Qf6 Ra1 Qd8 Kf2 Ke7 Kf3 Kf6 Ke4 c5 g4 h5 d4 a5 b4 h3 d5 f3 d6 h2 Kd5 c3 d7 a3 b5 a4 b6 a2 b7 c2 Bd2 c1B Bh6 c4 Bg2 f2 Nd2 f1N Ngf3 c3 Rg1 h1N Be3 c2 Nh4 Bg7 Kd6 Rh6 Nb3 Nc6 b8Q Nf2 Nc5 Nd3 Bd5 Bb7 Rh1 Ba3 Nf3 c1B Qd2 Nce5 Ng1 Qf8+ Kc7 Ra7 d8R Nc4 Nb3 Ba8+ Kc8 Kg6 g5 f5 Rh4 f4 Bc5 Nfe3 Qb5 Bcb2 Rd1 Ng2 e3 a1B Qa6+ Kf5 g6 Bbe5 Bf7 Bh8 g7 Rb7 Qb5 Rb8+ Kd7 Kg5 Bd5 Qf6 Ke8 f3 Bf7 Bh2 Re4 Qa6 Bd5 Rc6 Be6 Nh6 g8Q+ Bag7 Qf8 Rcb6 Qd6 R8b7 Qb8 Nf7 Bd5 Na5 Qc4 Rh6 Qcc2 Nc4 Qe2 Nde5 Rdd4 Nd3 Qcd2 Rbb6 Na1 Rb1 Be6 Nb6 Ba2 Qc4 Nb3 Qc1 Qed1 Nc4 Q1e2 Qf1
nR1n3r/5r2/B1r4q/rq1QBR1q/b3B1B1/5Kn1/bPR2r2/1k2Nb1N w - - 0 1 legal: proof: h4 e5 f4 exf4 d4 g5 a4 b5 g3 bxa4 Be3 c5 Bd2 cxd4 Bc1 Bh6 Rh2 g4 Rh1 Bg5 hxg5 fxg3 e4 Ke7 Ke2 Ke6 c4 Ke5 g6 d5 c5 a5 c6 h5 g7 f5 c7 g2 Ra3 f4 Rah3 h4 Qd3 a3 Nd2 a2 Qc4 a1R Qb4 g3 Qb6 d3+ Kf3 a4 Qb3 Kd4 e5 a3 e6 a2 e7 Qf8 e8R Nf6 g8B Nfd7 R3h2 h3 Nc4 d2 Qb5 d1B+ Be2 Ra6 Na5 Qh6 Bf7 Nb6 Rf8 Be6 c8B Nc6 Qb3 Na8 Qb7 Rb1 Re8 a1R Nc4 R1a5 Bg8 Ba4 Bd1 Kd3 Na3 d4 Nb5 Ba2 Kg4 f3 Qf7 f2 Ne2 g1Q Qf6 g2 Bf7 Qf1 Qe6 g1R+ Ng3 Rg2 Qd5 Ra7 Bf3 Kc2 Bh5 d3 Bf4 d2 Ba6 d1Q Rb8 Rc1 Be5 Nd8 Nd4+ Kb1 Nc2 Rf7 Ne1 Qb5 Rf1 Rc6 Bg6+ Qc2 Bge4 Qcd3 Rg1 f1B Bd1 Rd2 Rgg2 Rdc2 Rf2 Qde3 Rf5 Qeg5+ Kf3 Qgh4 Rd2 Q4h5+ Kf2 h2 Be2 Bh3 Bg4 h1N+ Kf3 Bf1 Bd3 Nf2 Nh1 Ne4 Re2 Ng3 Be4 Rc3+ Re3 Rc6 Rc3 Bd3 Rc5 Rh2 Rc2 Bf1 Qc5 Rd2 Qd5 Rf2+
3b3b/1RB4B/r1R4B/2bR1NPr/2Rn1nqq/N1Qp1r1b/5q1k/1n2K2b w - - 0 1 illegal: No possible last move, all moves rejected
qn3rB1/2K1p3/qnqR1N1B/NB2Q2N/b6R/rrN2P2/1n2b1kb/2b2n2 w - - 0 1 legal: proof: e4 a5 d4 g5 h4 gxh4 b4 axb4 e5 c5 e6 cxd4 Rh2 fxe6 Rh3 e5 Rh1 e4 Kd2 Kf7 g4 Ke6 a4 Kd5 a5 b5 g5 h5 g6 e3+ Kd3 h3 a6 h4 g7 b3 a7 b4 c3 h2 Nf3 e2 Ne1 h3 Nd2 b2 Ra6 b1R Ra4 b3 Ra2 b2 Ng2 e1B Ra6 Nf6 g8N Qb6 Be2 Bh6 Ra2 Qa6+ Kc2 d3+ Kb3 d6 Kb4 Bd7 Rf1 h1Q Nb3 Ke4 Na5 h2 Ra4 d5 Kc5+ d4 c4 d2 Nf4 d3 Nh5 Nd5 Rb4 Ba4 Ngf6+ Ke5 Rb6 Rf8 Rd6 Nb6 Qc2 d1N Qc3+ Kf5 Bf4 Qg2 Rh1 d2 Bf1 Qe4 f3 Bg3 Bd3 Ne3 Bg5 Nf1 Be3 Bgf4 Qd4 Kg5 Qe5+ Kh4 Be2 Kh3 Bd3 Bg7 Be2 Bg3 Bh6 Qc2 Bd3 d1N Bh7 Kg2 Bg8 Nc8 Kd5 Nb6+ Ke6 Bf4 c5 Bc1 c6 Qc3 c7 Qc6 Bd2 Bh6 c8N Bf4 Be3 Ra1 Bd2 b1B Be3 Ra3 Bd2 Nd5 Nb6 Nb2 Be3 Bg3 Bf4 Bd3 Bh6 Bab5 Na4 Be2 Nc3 Ba4 Qd4 Nb6 Qc5 N8d7 Qe5 Rab8 a8B Bgf4 Bb7 Qa8 Ba6 Rb7 Nfe4 Nb8 Bd3 N6c4 Nef6 Rbb3 Nce4 Qca6 Nc3 Nb6 Bb5 Ng3 Rhd1 h1Q R1d4 Nf1 Re4 Qg1 Rb4 Qc5 Re4 N6c4 Rd4 Bh2 Rh4 Nc6 Kd7 Nb6+ Kc7 Nb8+ Bc6 Qd5 Bb5 Qdc6+
RB2r1B1/rr1R2bq/Rb2p2n/p1n1P1Q1/2N1kb2/Kq4q1/BN2b3/5Bn1 w - - 0 1 illegal: No possible last move, all moves rejected
B2Q4/2q1B3/br1n2kP/B4np1/1nRpRb2/1rq2N2/Rb2nb1B/1Kr1N3 w - - 0 1 legal: proof: e4 b5 d4 c5 g4 cxd4 a4 bxa4 g5 f5 g6 fxe4 Bh6 hxg6 Bf4 g5 Bc1 g4 Kd2 Kf7 f4 g5 h4 a5 c4 d5 Kc2 e5 b4 a3 f5 g3 c5 g2 f6 a4 h5 a2 h6 a3 c6 e3 b5 d3+ Kb3 d4 c7 e4 b6 e2 b7 e1Q Nf3 g1N Rh5 e3 Bh3 d2 Kc2 e2 Bd7 Na6 b8B Kg6 f7 Nb4+ Kb3 Ba6 c8R Bd6 f8B Bf4 Be5 Ne7 Nh2 Nf5 Rc3 Rb8 Nf3 Nd6 Be7 Rb6 Bc6 Qc7 Rc4 Rc8 Rh4 Qg3 Qe1 d1N Bd2 Ne3 Be4+ Nef5 Ba8 Rcb8 Qf2 e1B Qe3 Bf2 Ne1 Ne2 Rg4 Nd3+ Kc2 Rc8 Ba5 Nb4+ Kb3 Qh3 Nd2 Qg3 Ndf3 Rcb8 Rac1 a1B R1c2 a2 Qe4 Bb2 Qd5 a1R Qg8+ Ng7 Qd8 Ngf5 Rh4 Rc1 Rd2 Nd5+ Ka2 Rc2 Kb1 Rb3 Rg4 Nb4 Rh4 Rb6 Rg4 B4e3 Re4 Qh3 Bg3 Bf4 Bh2 Nd5 Ra4 Nb4 Ra2 Qg3 Rd3 Qh3 Rc3 Qg3 Rc4 Qh3 Nd2 Qc3 Ndf3 Rc1#
bk1Nn3/1br4q/1R1P2b1/1q1nB2r/3rBQR1/5nqb/B2qB3/KQb3N1 w - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 c4 gxh4 f5 d5 f6 dxc4 Ba3 exf6 Bb2 f5 Bc1 f4 a4 Kd7 d4 b5 Kd2 h5 Kc2 c5 Kb2 Kc7 g4 f5 e4 h3 d5 b3 g5 b4 e5 h4 a5 h2 e6 f3 a6 f4 a7 f2 e7 f3 e8B h3 g6 Ne7 g7 Nd7 g8B Nf6 Bh7 Qd6 Bhg6 Qg3 Bg2 f1Q Bc6 f2 Ra2 c3+ Ka1 c4 B2e4 c2 Ra4 c3 Qd3 b2+ Ka2 b3+ Ka3 Rh5 Qd1 Bh6 Ra5 Qb5 Bef5 f1N Bg4 Nd2 Bge8 Nf3 Nd2 b1B Nc4 b2 Bf7 Ne8 Ra6 Bf5 Qd3 Rd8 a8Q Be6 Bg5 c1R Nd6 c2 Rb6 Bc8 Qa5 Be6 Nb7 Kb8 Bf6 Rd7 Bg7 Rd1 d6 c1Q Qb3 Rd4 Qbb4 Bg6 Qaa4 Qd2 Be4 b1Q Be5 Nd5 Nd8+ Rb7 Qb2 Qbc2 Ka2 Qc7 Bg8 Qh7 Ka1 Bd7 Ra6 Rc7 Qb1 Bc8 Rb6+ Bb7 Ne2 Bg5 Rg1 h1B B8e6 h2 Qc4 Bg2 Qcb4 Ne7 Ba2 Bh3 Rg2 h1B Ng1 Nd5 Qa4 Nh2 Be2 Nf3 Qc4 Qde1 Qb4 Bc1 Qd2 Qd1 Qf4 Qd2 Rh2 Bc8 Rh4 Bg2 Rg4 Bh3 Ra6 Ba8 Rb6+ Bcb7
q2b1Qq1/1nr1BrbR/1K6/3rB1qb/2B2p1b/NP2nBk1/1QNpb3/2R5 w - - 0 1 legal: proof: f4 b5 g4 h5 a4 bxa4 d4 hxg4 f5 c5 f6 cxd4 Kf2 exf6 Ke1 f5 Bd2 f4 Be3 Nh6 Bc1 Ng8 Kf2 Ke7 h4 Ke6 e4 Ke5 c4 f5 h5 a5 c5 g5 b3 d5 c6 g3+ Ke2 g2 Kd3 g4 c7 g3 h6 f3 h7 a3 Rh3 a2 Rh6 f2 Ne2 g1Q Rd6 g2 Qe1 a4 Nf4 a3 Rc6 Qg5 Ra6 Ra7 Nd2 Nf6 Bb2 Be7 Qd1 Bd8 Nh5 Nbd7 Ra4 Ba6+ Rc4 Ng4 c8B Ne3 Qc1 Rc7 Be2 f1R Nf6 Kf4 e5 Kg3 e6 f4 e7 Rf8 e8Q Rf7 h8B Rd1 Rb1 a1B Bf3 a2 Ba3 Qh1 Bb4 g1Q Ng4 Qg8 Qf8 Nc5+ Ke2 Bb5 Qb2 Nb7 Kd3 Qgg2 Be5 Qh6 Rc1 Qhg5 Qb1 Bc3 Bd7 a1B Be7 Ba5 Qb2 Bb4 B7f6 Bbe7 Be6 Qh1 Ke2 Be8 Nb1 Qhh8 Na3 Rd2+ Ke1 d3 R4c2 d4 Bc4 Rh2 Re2 Rh5 Rh2 d2+ Ke2 d1B+ Kd3 Be2+ Ke4 d3 Kd4 d2 Rh4 Q5g6 Bg5 Bf6 Rh2 Bg7 Be7 Rhf5 Rh7 Qg5 Nf2 Bf6 Nd3 Bg7 Ne1 Bf6 Kc3 Bg7 Kb4 Bf6 B5d6 Rd5 Nec2 Bg7 Qb1 Baf6 Be5 Qf5 Qb2 Bh4 Be4 Qg5 Bf3 Nc5 Ka5 Nb7+ Kb6 Rf5 Qf6 Bh5 Qh6 Rf7 Qd6 Qe8 Qb4 Qhg8 Qc5 Qa4 Qd6 Qa8 Qh6 Bh8 Qf8 Bg7
3n4/1r1p3B/p3pK2/BRrqq2N/nB2Nn2/2b3Q1/Pn2r1b1/RB1k1n1Q w - - 0 1 illegal: No possible last move, all moves rejected
3bqq2/1p6/3qBRN1/Q3pq1k/bR2P1r1/1r1nNpb1/1BK1QbNn/3N4 w - - 0 1 legal: proof: f4 c5 b4 h5 g4 hxg4 d4 cxd4 f5 a5 f6 axb4 Nd2 Ra6 Nb1 Rxf6 Kd2 Rf3 Ke1 Rf2 Kd2 f5 c4 Kf7 a4 Kg6 h4 d5 c5 e5 c6 f4 a5 d3 a6 f3 c7 g3 a7 d4 a8N b3 Rh3 g2 Qe1 b2 Ra6+ Nf6 Rh2 Be7 Rc6 Qe8 Rb6 Rg8 Rh1 Nc6 Rh3 Kh5 Ra6 g5 Ra7 g4 Rg3 Bd8 Ra6 Bd7 c8Q Nb4 Nc3 b1Q Nd1 Ba4 Nh3 g1B Nb6 Bh2 Qc4 Rg6 Rg2 g3 Nd5 Ng4 N5e3 Rg7 Rg1 g2 Bb2 Bg3 Rf6 Nh2 Qb5 Rg4 Qa5 Qa2 Rh1 g1B Kc1 Qaf7 Bg2 Qg6 Nf4+ Kh6 h5 Rf1 Ba3 B1f2 Bh3 d2+ Kb2 d3 Nfg2 Kg5 h6 Kh5 h7 Qf5 h8N Qf8 Ng6 Rg1 Nc3 d1Q Qd2 Qf1 Qc2 d2 Ncd1 Nd3+ Kc3 Rb4 Bb2 Qf4 Be6 Qf5 Qb1 Rb3+ Kc2 Kg5 Qa2 Kh5 N2h4 Q1h3 Nhg2 Qh4 Nf1 Qd4 e4 Qd7 Nfe3 Qde8 Qb5 Nf4 Qe2 Nd3 Qa3 Bc6 Qa8 Ba4 Qa5 Bh4 Ne1 Rg4 N1g2 Bhg3 Nc3 Kg5 Rb1 Kh5 Ncd1 Nc1 Ba1 Rb6+ Rb3 Rb4 Nc3 Rb6 Bb2 d1Q+ Kb1 Qdd6 Kc2 Nd3 Ncd1 Bc6 Rb4 Rb5 Rd4 Rb3 Rb4 Ba4
2rB2Nb/1Qb3p1/1N1R1p2/2n1bp1Q/1KP3R1/2p1pnRR/8/r1k1rBqb w - - 0 1 illegal: Other
r2QBr1r/1K1Qr3/n1Rr2p1/8/b2B1Qq1/6b1/k2BNpP1/qbnn1RR1 w - - 0 1 illegal: No proof kernel
2n3KR/N1Q2rBR/2B5/2PqnB2/n1bbp1Q1/1n1k4/R1b1r1r1/1q2b2R w - - 0 1 legal: proof: d4 b5 g4 f5 f4 c5 a4 cxd4 axb5 g5 e4 fxe4 Nd2 gxf4 Ndf3 h6 g5 h5 Ne5 Ba6 Ng4 hxg4 Rb1 Bb7 Ra1 Bc8 Bh3 e3 Ke2 Kf7 Kd3 Kg6 Ke4 d5+ Ke5 a5 c4 a4 b4 f3 b6 f2 b7 f1R b5 d3 c5 g3 b6 g2 Ra2 d2 Qf3 d1B Qg3 e2 Rd2 d4 Ra2 a3 Qb3 d3 Nf3 g1Q Rc2 a2 Bb2 a1N Qa4 d2 Nd4 Be6 Nc6 Nb3 Bg4 Rf6 h4 Bg7 Qc4 Ra4 Na7 Ra2 Qd4 Bc4 h5+ Kf7 h6 Kg6 h7 Nc6+ Ke4 e5 b8Q Rf5 b7 Nge7 Bc3 Re8 h8R Rf2 R8h7 Qd7 Qc7 Qd5+ Ke3 Qf1 b8R Rg8 Rd8 Nc8 Be6 Rg2 Qg4 Rf8 Bd4 Rf6 Rdh8 Qf5 Bc3 e1B Rb2 Qb1 Rc2 Ra6 Ra2 Bc2 Ba1 Rf4 Bd7 Re4+ Kf3 d1N Bc3 Kf7 g6+ Kf6 Be8 Nb2 Bd4 Bf8 g7 Na4 g8B Bg7 Be6 Rb6 Bf5 Rb7 Qb6 Rd7 Qc7 Re7 Qg3 Ree2+ Kg4 Rf7 Kh5 Qf3+ Qg4 Qd5 Be3 e4 Bh6 Nb8 Bc6 Nd7 Qb6 Ke5 Kg6 Kd4 Qc7 Be5 Bf8 Kd3 Bh6 Rf6+ Kg7 Rf7+ Kg8 Bd4 Bg7 Ne5
Q2N4/r1R3Q1/p1BrBKPp/r3Q3/3b2r1/R2n4/1qqrnk2/B2r2rB w - - 0 1 legal: proof: d4 b5 f4 c5 a4 cxd4 f5 bxa4 f6 g5 Ra3 g4 Ra2 exf6 Ra3 f5 Ra1 f4 Nd2 Qb6 Ndf3 gxf3 g4 Ba6 h3 Bd3 g5 Qd8 Qd2 Bf5 Qd1 Bg4 hxg4 Bh6 Kf2 Bg7 Ke1 Bf8 Kd2 Ke7 Kd3 Kd6 Ke4 Kc5 Kf5 d5 c4 a6 e4 f2 e5 d3 b4+ Kd4 b5 a3 b6 a2 b7 d2 g6 Ke3 g5 d4 e6 f3 e7 h6 e8Q+ Ne7+ Ke5 f5 g7 f4 g8B d3 c5 Nbc6+ Kf6 Qb6 b8Q Qb2+ Kf7 Nb4 g6 Bg7 c6 Bd4 c7 Ra7 Qed8 Nf5 Qd5 Ng3 Qba8 Ne2 Bh7 Rd8 Bg2 f1R Bg8 f2 Nh3 f3 Ng5 Rd6 Ne6 Rg1 Nd8 f1Q Qe5+ Kf2 Qc2 d1R Qc3 Qc2 Bb2 d2 Rh5 Qe1 Bh1 Nd3 Rc1 a1R Rh3 Ra2 Ba1 Rg4 Kg7 Qg1 Be6 Qh2 Kf6 Ra5 c8B Rdg1 Rg3 d1R Bd7 Rd2 Bc6 Qb2 Qc4 Qh5 Qa4 Re4 Rc5 Ndc1 Rd5 Kf1 Qa2 f2 Bb7 Nf4 Qa4 Qd1 Ra3 Ncd3 Qd7 Qdc2 Qg7 Ne2 Rb5 Reg4 Rc5 Ke1 Bbf3 f1R Rc7 Kf2 Bc6 Rfd1
2qr4/r2Qq1p1/1kbB4/1P1R1q2/2K1NBpn/1N1Q1pBq/2NnNb1n/8 w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 c5 d3 e5 d4 cxd4 e4 Ke7 b4 Rh6 f5 Re6 Bc4 Ra6 Be6 Rb6 Ra3 Kf6 Rf3 Rd6 Rf4 exf4 e5+ Ke7 Bb3 Rh6 e6 Ke8 e7 Rh8 Be6 fxe6 Bb2 Kf7 Ba3 Nh6 Bc1 Ng8 Kd2 Ke8 Kd3 d5 c4 Kd7 e8N a5 h4 a4 f6 a3 c5 a2 f7 a1N h5 e5 h6 e4+ Kd2 d3 Kc3 d2 b6 Kc6 h7 d4+ Kc4 e3 b7 e2 Nc7 e1Q Rh4 d3 Qc2 d1Q Qh2 d2 Qh3 Qee7 Ne6 Qf3 Rh5 d1Q Rd5 Bd7 Na3 Ra7 Nc2 Nb3 Ne2 Qc8 N6d4+ Kc7 c6 Qdf1 b5 Kb6 c7 Nh6 Qg3 Nc6 b8B Qh3 Bd2 Qff1 Qd3 Nf5 Be1 Rg8 h8Q Nh4 Bg3 Qb1 Qhh7 Rh8 Qhf5 Ne5+ Kc3 Bc6 Qd7 Nd2 Nb3 Qbf1 Kd4 Nef3+ Kc3 Nh2 Kd4 Nb1 Kc4 f3 Bf4 Qe1 Bg3 Qe6 Bf4 Bc5 f8B Bf2 B8d6 Qf8 Bg3 Qff5 Bgf4 Rd8 Bg3 Kb7 Bdf4 Qe7 Bd6 Qa5 c8N+ Qc7 Bdf4 Re8 Nd6+ Kb6 Ne4 Qc8 Bbe5 Rd8 Bd6 Nd2+
R3B1N1/B4b1r/bN2QqB1/p6p/K1Np1kbB/2q1qb2/1b5P/2nn2Q1 w - - 0 1 legal: proof: d4 c5 f4 cxd4 a4 e5 b4 exf4 Ra2 b5 Ra3 bxa4 g4 f5 Bd2 a5 Rb3 axb3 Bc3 f3 Bd2 f4 Bc1 Ra6 Kf2 Rf6 Ke1 Rf5 gxf5 Bd6 Bb2 Bc5 Bc1 Bf8 Kd2 Ke7 e4 Kf6 c4 Kg5 c5 h5 f6 d5 f7 b2 Kc2 f2 Kb3 d3 c6 d2 b5 f3 b6 d4 b7 Qf6 e5 Na6 b8Q Nh6 c7 Ng4 e6 Nb4 e7 Rh7 e8B Nd3 Qb7 Kf4 Qa6 g5 Na3 b1B Nc4 Ne3 Ka4 g4 Qe6 g3 Nb6 Ba3 f8B g2 Bc5 Bb2 Be2 Bb7 c8N f1B Ne7 f2 Ng8 Ba2 Nf3 g1Q Ne5 Bf3 Nec4 Qg3 Qe1 Nd1 Rg1 Qe5 Rg2 Qe3 Rg1 Qh3 Rg7 Bg4 Ra7 Qhg3 Bf3 Be2 Bg2 f1Q Be4 Qff3 Qg1 Qh4 B4g6 Qf6 Nd6 Bd5 Ra8 Bc4 Qe7 Bf7 Qe6 Qh3 Ndc4 Bef3 Nd7 Bb7 Ba7 Ba6 Ndb6 Bf3 Qe7 Qc8 Qe6 Bg4 Ne5 Qc3 Nec4 Ba1 Ba3 Bb2 Be7 Nc1 Qc8 Nf2 Qe6 d1B+ Bc2 Bdf3 Bg6 Nd1 Bd8 Qfe5 Bh4 Qf6
b1b3Q1/1qn1k3/r4b2/1B3P2/1pqB1q1N/2B1pp2/1N2r2N/Q1KrRr1N w - - 0 1 legal: proof: e4 a5 b4 axb4 f4 f5 d4 c5 Bb2 cxd4 Na3 g5 Qc1 gxf4 Qd2 f3 Qd1 f4 Bc1 Na6 Nb1 Nc5 g4 h5 g5 Ne6 a3 Ng7 a4 Nf5 exf5 Ra6 Ne2 Rf6 Rg1 Re6 Rg4 Ra6 Ng1 hxg4 Bg2 Nf6 Kd2 Rc6 Bb2 Qa5 Na3 Nh7 Qe1 Rc7 Nh3 Qe5 Rc1 Qd6 Nb1 Rc6 Rd1 Qc7 Bc1 Nf6 Qe2 Ng8 Rh1 Rch6 Bf1 Rb6 Ng1 Ra6 Qd1 Qd8 Ke1 Ra8 Kd2 b5 c4 e5 h4 d5 a5 e4 g6 b3 c5 d3 g7 g3 h5 d4 a6 g2 c6 f2 c7 b2 h6 Nf6 g8Q Qd5 a7 Ke7 h7 Qc4 Qa4 Ne8 Nh3 g1Q Qa1 e3+ Kd1 f3 Nd2 b1B Bb2 b4 Bc3 Qg4 Kc1 Qf4 Be2 Bc2 Nf1 Bg7 Nh2 Bf6 Re1 f1R Nf2 Ba4 Nh1 Bc6 Qg3 Rg8 h8B Rg5 Qg4 Rh5 Qg8 d2+ Kb2 d1Q Bd3 Qd5 Bb5 Q1b3+ Kc1 d3 Bg7 Qbc4 Bh8 Rb8 a8N Rb6 Bg7 Ra6 Nb6 Qde4 Na4 Ba8 Nb2 Qb7 Bh8 Rg5 Bg7 Rg2 Bh8 Be6 Bg7 Re2 c8N+ Kd8 Ne7 Bc8 Ng6 d2+ Kd1 Qe7 Kc2 Qb7 Nh4 Ke7 Bh8 Bg5 Bd4 Bf6 Rc1 d1R+ Kb1 Rd3 Re1 Nc7 Kc1 Rd1+
2Nqkr2/K1p1N3/1R3p2/1bp5/bQ2Q3/p1B5/2nPnNp1/bn1Bq1QN w - - 0 1 legal: proof: f4 e5 g4 exf4 c4 b5 a4 bxa4 c5 d6 g5 dxc5 g6 Qg5 Ra3 Qe7 Ra1 Qd8 b4 a5 Qc2 h5 Qd1 f6 Ra3 Ke7 Rg3 Kd7 Rg4 hxg4 Bg2 Ra6 Bf1 Re6 Ba3 Re7 Bc1 Rf7 gxf7 Rh3 Nc3 Rh5 Nb1 Rh8 e4 g5 Ke2 a3 Kd3 a2 Kc4 a1N Kb5 f3 h4 a4 e5 g3 h5 a3 e6+ Ke7 h6 f2 h7 g4 Be2 f1B Nc3 g2 Ne4 g3 Bb2 Nh6 Nf2 Qd5 Ngh3 g1Q Bc3 Bg7 f8N g2 Ng6+ Kd8 e7+ Kd7 e8N Nf7 Ne7 Nc6 Nd6 Rf8 h8Q Ng5 Qh7 Nc2 Qe4 Bh6 Qb1 Bb7 Ndc8 Ke8 Qd1 Ba8 Ka6 Qd8 b5 N6d4 b6 Bc6 Ka7 Ba4 Bg4 Ba6 b7 Ne2 b8Q Qe1 Qbb4 B6b5 Bh5+ Nf7 Rg1 Be3 Nh1 Bd4 Bf3 Nd6 N3f2 Nc4 Bg4 Nb6 Qdb1 Nc1 Bd1 Nd5 Bb2 Nc3 Qa1 Nb1 Bc3 Qe2 Re1 Qf1 Re3 Ne2 Rd3 Be5 Rd6 Qg1 Rb6 Qe1 Qa2 Nf4 Qac4 Bd4 Qf1 Ne2 Qg1 Kf7 Ba1 Bb2 Nd3 Ke8 Ndf2 Bc1 Be5 Bb2 Bc3 Ba1
2r1R2n/r1N1nr1B/3R2b1/b2B1N2/1b1nRBbr/1B1n2P1/3B2b1/K5qk w - - 0 1 legal: proof: c4 c5 a4 e5 d4 cxd4 f4 exf4 h4 g5 Qb3 gxh4 Qc3 b5 axb5 dxc3 Kd1 Ke7 Kc2 Ke6 b4 Ke5 e4 d5 g3 a5 b6 h5 b7 f5 b5 d4 b6 f3 c5 a4 c6 d3+ Kd1 d2 Kc2 d1N c7 a3 Bd3 f4 Bd2 f2 Bb5 f1B Bd3 a2 Bc4 h3 Bf7 h2 Bd5 f3 Ne2 f2 Rg1 h1B Be3 h4 Bc4 h3 Nc1 h2 Be6 Qd4 Bd2 Bd3+ Kb3 f1R Bd5 c2 Ne2 c1B Na3 Ra7 Nb5 Nd7 b8B Nf2 b7 Bg2 Rb1 h1R Rb2 Qe3 Ned4 Bb4 Nf5 R1h4 Rc2 Ba5 Rc6 a1N+ Ka2 Ba3 Rd6 Nf8 Bb3 Bd7 c8B Ng6 Nc7 B3b4 Kb2 Be6 Bd7 Qc5 Bc6 Nc2 Bcd5 Nd4 Ka2 Bb1+ Ka1 Nd3 Rh1 Rf2 Re1 N8e7 Re2 Rc8 Re3 Kf6 e5+ Kg5 Re1+ Rff4 Re4 Bd7 e6 Kg4 Na6 Kf3 Nc7 Nec6 e7 Nh8 e8B Ne7 Bg6 Qb6 Nh6 Rf7 Bh7 Bg4 Nf5 Kf2 Ne8 Kg1 Bc7 Rca8 b8R Kh1 Rbd8 Qc5 Bb8 Qc1 Nc7 Qg1 Re8 Ra6 Ba7 Rc8 Bc5 Ra7 Bb6 Ndc6 Bbe3 Nd4 Bf4 Ng8 R4e5 Ne7 Ng7 Nc1 Ree6 Bbf5 Re4 Bg6 Nf5 Nd3+
Bk3B2/6PB/Bp2BB2/p2K4/1Nn2n2/1p1nr2R/qRpp1Qr1/5nbb w - - 0 1 illegal: No proof kernel
5R2/1r1k3p/8/K1RP1qb1/1rBN1BB1/Br1B3N/1Bn2rnr/1bqn1r2 w - - 0 1 legal: proof: b4 a5 h4 g5 c4 gxh4 f4 b5 a4 e5 Qb3 exf4 axb5 d5 b6 dxc4 b5 Ne7 Qa4 Ng8 Qb4 axb4 d4 f5 Kd2 c5 e4 h3 g4 h2 d5 b3 Kc3 f3 e5 b2 b7 f2 g5 f4 e6 f3 g6 Qd7 g7 Ra3+ Kd2 c3+ Kd3 c4+ Kc2 Be7 b6 Bg5 e7 Na6 b8B Rb3 Nd2 b1N b7 Nf6 g8B Ng4 Be2 Nb4+ Kd1 Qe6 Bb2 c2+ Kc1 Ne3 Ra6 Nc3 Ra8 Ng2 Bf4 Qg4 b8B Bf5 Ba7+ Kd7 Nh3 Bd3 Bf7 Rb8 Bg6 Rb7 Bc5 Bf5 Rf1 h1R Rf8 Rh2 Re1 Bd3 Be4 Qf5 e8B+ Kd8 Bf1 Kc8 Bh5+ Kd7 Re3 Nd1 Be2 f1R Bg4 f2 Nf3 Re1 Bf1 Re2 Nd4 Rd2 Bfe2 f1R Bcd6 Rfh1 Bf1 Rf2 Bfe2 Rhf1 Kd2 Na6 Bda3 Nb4 Rf3 c1R Bc3 Bb1 Bcb2 Be7 Rc3 Bf6 Bc2 Bg5 Be4 Nc6 Rc2 c3+ Kd3 Nb4+ Kc4 Rc7+ Kb5 Ra7 Rd2 Rb7+ Ka5 c2 Rd3 Nde3 Rc3 Rce1 Ne6 c1Q Rc5 Nd1 Ba6 Nc2 Bed3 Re4 Bab5+ Ke7 Ba6 Rc4 Nd4 Rcb4 Bac4 Kd7
1RBRR2q/1n2pB1b/4r1B1/1np1P1n1/1R2b2r/B4b2/3NKb2/1q1nNnk1 w - - 0 1 legal: proof: f4 a5 g4 h5 b4 axb4 c4 d5 Qb3 dxc4 Qf3 g5 Qg3 gxf4 g5 Qd5 Qg2 Qd8 Qg4 hxg4 e4 Kd7 h4 Kc6 a4 Kc5 h5 Kd4 d3 f5 e5 b5 a5 c5 a6 c3 g6 f3 a7 c2 g7 b3 h6 f4 h7 b4 Ra6 g3 Bd2 c1N Rc6 f2+ Kd1 f3 Rh2 b2 Rch6 b3 Be1 Ke3 d4 g2 d5 Nf6 g8B Nc6 d6 Bg4 d7 Na2 R2h3 Ne4 Rh1 Ng5 R6h2 Bh6 Bf7 Na5 Be2 f1N Bg3 f2 Bf3 Nb7 Ne2 g1Q Nd2 b1B Nd4 b2 Rh4 Be4 Be2 b1B N4f3 Qc8 Ne1 Bgf3 d8R Rb8 a8B Nc3+ Kc1 Bbc2 Ba6 Nb5 Bf4+ Ke2 Rg4 Ne3 Rh5 f1N Re8 Rg8 h8R Kf2 Rd8 Rg6 Rhe8 Re6 Rh3 Bf8 Rh8 Nd1 Bg6 Bh6 Rhg8 Na5 Bd5 Nb7 Rh4 Qh1 Ba2 Kg1 Rgf8 Rd6 Baf7 Qf5 Rh8 Re6 Rhg8 Ra8 Rb8 Qf6 Red8 Qh8 Rge8 N7d6 Bb7 Ra4 Bc8 Nb7 Be3+ Nf2 Bd4 Rc4 Bb2 Nd1 Ba3 Rb4 Bh5 Bh7 Bhg6 Rg4 Rh2 Rh4 Re2 Bce4 Re3 Nh3 Rb3 Be3 Rb2 Bf2 Rb4 Bd5 Kc2 Ng5 Kd3 Qh3 Rd4 Bfe4+ Ke2 Qb3 Rc4 Qb1 Rd4 Bh1 Rc4 Bde4 Rb4 Bhf3+
k1Bb4/pNPN1nnK/bRr5/P2bR3/3rbQr1/1r1B3R/3p2N1/n4b2 w - - 0 1 legal: proof: f4 e5 c4 exf4 h4 b5 h5 bxc4 h6 gxh6 Rh3 h5 Rh1 h4 d4 c5 b3 c3 Nh3 c4 Ng1 Qg5 Bb2 Qc5 dxc5 cxb2 Kd2 Kd8 g4 Kc7 e4 Kb7 a4 d5 b4 f5 a5 h5 e5 c3+ Kd3 d4 g5 f3 g6 f4 Ke4 f2 g7 d3 e6 c2 Kf5 c1R Kg6 h3 e7 d2 e8B h2 b5 f3 b6 h4 Bf7 h3 Ra3 Nf6 g8R Nc6 Ra4 Rh4 Rg7 Nd8 B7c4+ Nf7 Nc3 b1R Nge2 Rd4 Bd3 Nh5 Kh7 Rb3 Rb4 Be7 Ne4 Bd8 Rg5 Ng7 c6+ Kb8 Rh5 Ba6 b7 Rc2 Bg2 f1N Nd6 f2 Rb6 Ne3 Nf4 f1B Re5 Rcc3 Qg4 Nc2 Bd5 Na1 Ng2 Rcc4 Qf4 Ra4 Rg1 h1B Be6 h2 Bc8 Rab4 Ne3 Rbc4 Rg3 Bd5 Ng2 h1B Rh3 Ra4 Qh6 Rg4 Qg5 Rad4 Qf4 Kc7 b8N Be4+ Bf5 Bd5 Nd7 Rc8 Nb7 Be4 Ndc5 Kb8 Nd7+ Ka8 c7 Rb8 Nf8 Bd5 Bc8 Rc3 Nd7 Rc6 Nbc5 Rb7 Rb2 Rb3 Nb7 Ra3 Rb6 Rb3 Ne3 Bhf3 Ng2 Bfe4+
4N1q1/1BQp2R1/R2P1q1k/2qq1q1N/2b1BPB1/1p2n3/r1pb4/r1rN1n1K w - - 0 1 legal: proof: e4 a5 c4 g5 h4 gxh4 b4 f5 c5 fxe4 Ba3 b6 b5 bxc5 Bb4 axb4 Qb3 c4 Qc2 Ra7 Qd1 Ra8 g4 Kf7 a4 Kg6 d4 h5 f4 c5 Kf2 e5 Kg2 h3+ Kh2 b3 g5 h4 d5 c3 a5 c4 b6 c2 b7 c1Q a6 e3 a7 e2 Qd3+ e4 Qe3 e1R Qg3 e3 Ra2 c3 Ba6 e2 Nf3 Ne7 Ra4 Nbc6 b8N Nd4 Ng1 Nc2 Nf3 Ne3 Ra3 N7f5 Qf2 Bb4 d6 Qf6 Nd4 Ng3 Rg1 Ngf1+ Kh1 h2 Bb7 c2 Rg4 Bd2 Ra6 Qa3 Ne6 Qc5 Nc3 Rc1 Nd1 e1Q Ng7 Rh5 Qf3 Qg3 Qc6 Kh7 g6+ Kh6 Rg5 Qg4 Qb6 Qgf5 Qc7 Ra1 Be4 Bb7 Rg1 Bd5 Rg2 Rg5 Nh5 Bc4 g7 Ra2 Rg1 Rg2 g8B Re2 Rg7 Re1 Nc3 Rc1 Be6 Qcd4 Ra3 Bd3 Na6 Qh7 Rg3 Qa4 Rg7 Qc6 Qc8 Qc5 Nd1 Bc4 Bb7 Qg8 Nc7 Raa1 Ne8 Nf5 Kg2 h3+ Kf3 N5e3 Qc7 h1Q+ Kf2 Qe4 Bg4 Qef5 Kg1 Rc8 a8B Rb8 Bbf3 Rb6 Ra7 Rba6 Bab7 R6a2 Ra6 h2+ Kf2 h1Q Bfc6 Qf3+ Kg1 Qe2 Kh1 Qed3 Be4 Qdd5
1q6/BpNpr3/n4q1r/RbP1qBr1/B1PQ4/2q3R1/1bbNQ1q1/k4K2 w - - 0 1 illegal: Other
Q1B3bk/P2q2nq/5nq1/1N4Q1/R5bR/bK3q1r/BB1Pnn2/rNr4q w - - 0 1 illegal: No possible last move
KbR2r2/1N6/2NQNnbn/2qrP2R/1P1QBq1B/1n2b3/kr2b2b/3r3n w - - 0 1 legal: proof: f4 b5 h4 g5 a4 bxa4 d4 gxh4 f5 c5 f6 cxd4 Kf2 exf6 Ke1 f5 Bd2 f4 Be3 Bg7 Bc1 Bf8 Kd2 Ke7 Kd3 Kd6 Ke4 Kc5 g4 Kc4 b4 a5 g5 f5+ Ke5 d5 e4+ d3 g6 h5 c3 h3 g7 h4 Qf3 Kb3 c4 h2 c5 h3 c6 a3 c7 a2 Qh5 f3 Ba3 a4 Qg4 f2 Qf4 d4 Qd2 f4 Be2 f1B Nf3 Qh4 Kd5 Nd7 Kc6 Nh6 g8N Bd6 Bb2 a3 Ng1 f3 Nc3 f2 Nd1 Nf6 Kb6 Bf5 Kb7 Qf4 c8Q Bb8 Qd7 Bg6 Rc1 a1B Qd6 a2 Ne7 Rf8 Bf3 Be2 Qd7 f1N Qe1 d2 Qf5 d3 Ne3 d1R Nc6 d2 Qh4 Ra4 Be5 Bd4 Nc4 a1B N4a5+ Ka2 Ka8 Be3 Qd7 Bad4 Bc7 Be5 Qd6 Ra3 Qg4 Rb3 Nb7 Rb1 Qgd7 Rb2 Qd4 Bd6 Bd8 Be5 Bg2 Bec7 Nf3 Be5 Rg1 h1Q Ng5 h2 Ne6 Bed6 Bf3 Qg2 Rc2 Qf2 Rg5 h1N Rh5 Qg1 Rc1 Qgg5 Bg2 Qc5 Be7 Qf2 Bd8 Bh2 e5 Qf4 Rc4 Rc1 Q7d5 d1R Be4 Nd2 Qd6 Nb3 Be7 Nfg4 Bh4 Nf6 Qc3 Rd5 Qd4 Qa5+ Na7 Rf1 Rc8 Qc5 Nc6 Rd1
1QQ5/B3nrb1/N3r1r1/5PnN/2N4k/1K1Pbpn1/q1R1rr2/2rr1bRB w - - 0 1 illegal: No proof kernel
n1B4Q/1pr3R1/n4q1n/1b1krn1P/5b1P/B2r1nRK/1QNR2r1/n1N4b w - - 0 1 illegal: Other
N2r1b2/4R1q1/2rr1P1k/1bK5/4Qn2/B1R2Q1p/Ppr1Brn1/r1Bq1q1N w - - 0 1 legal: proof: e4 a5 c4 g5 h4 gxh4 b4 axb4 e5 d5 e6 dxc4 Qg4 fxe6 Qf3 e5 Qd1 e4 Ke2 Kf7 Ke3 Kg7 d4 e5 g4 c5 f4 b5 f5 h5 f6+ Kh6 d5 h3 d6 b3 d7 b4 Qe1 h2 Qg3 h4 Bh3 c3 Qg2 c4 Qf3 b2 Nd2 b1Q Nf1 c2 Bd2 c1R Ng3 c3 Nh5 b3 Bf1 b2 Be1 c2 Qg2 h3 Ba5 Qc7 d8B Na6 Ne2 Qg7 Bab6 Nc7 Bc5 Bd7 Nd4 Ne6 Qf3 Ne7 Bb4 Ng6 Nb5 Nef4 Bbe7 Nh4 Ba3 Ra6 Ng3 Rd6 Nc7 Bb5 Na8 Rg8 Rg1 h1R Be2 Rh2 Bc7 Rf2 Nh1 Rh8 Rd1 Rg8 Rd3 Nhg2+ Kd2 e3+ Kc3 e4 Kb4 Rh8 Rc3 Rg8 Kc5 Rh8 Bf1 e2 Bb8 e1Q Be2 e3 g5+ Kh7 g6+ Kh6 Bc7 Qf1 Bb6 Be7 Ba7 Rhd8 Qe4 Bf8 Bb6 Qh7 g7 Qd1 g8Q Qg7 Qgd5 Qf1 Bg4 e2 Qdf5 e1R Be2 Red1 Qf3 R1d2 Q5e4 Re1 Bc7 Qd1 Ba5 c1R Rb1 Rcc2 Rc1 Bc4 Re3 R2d3 Bd2 Rb3 Rc3 Rbb6 Rb1 Bb5 Be3 Qd2 Rd1 Qc1 Rd3 Qd1 Bc1 Ra6 Re3 Qd3 Bd2 Ra1 Bc1 Qfd1 Qd4 Qf1 Re7 Qdd1 Qde4 Rac6+
1rrb1k2/2BPbrqp/3R2Q1/7P/2q2pBN/6n1/RqbQ1Bp1/2N1K1nn w - - 0 1 legal: proof: f4 a5 g4 f5 b4 fxg4 c4 axb4 c5 e5 f5 d6 Qc2 dxc5 Qe4 c4 Qf4 exf4 a4 b5 h4 g5 d4 c5 e4 g3 d5 g4 h5 g2 a5 c3 e5 c4 a6 b3 f6 c2 d6 g3 e6 b4 e7 c3 a7 b2 Rh4 b3 Ra3 Nh6 Ke2 Nd7 Rh3 Ne5 Ke1 Qd7 Rh4 Rb8 a8Q Nf5 Be3 c1B Qa7 c2 Rg4 Bd2+ Ke2 c1Q Qd4 Nd3 Nf3 Qc4 Nc3 b1R Rg6 b2 Na2 Ba5 Nh4 Bd8 Nc1 Nf2+ Ke1 g1N Be2 g2 Qd2 Nh1 Bg4 Nfg3 Ra2 Qdc7 Rh6 Bf5 Bf2 Bc2 Rg6 Qd7 Rh6 Kf7 e8Q+ Kg8 Qe4 Bfe7 f7+ Kf8 Rf6 Ra1 Qg6 b1Q Re6 Qa7 Rf6 Qad4 d7 Qbb2 Rd6 Rg8 Ra7 Ra5 Raa6 Rc5 Ra2 Rcc8 Qgd3 Kg7 f8B+ Kf7 Bg7 Rf8 Be5 Kg8 Qf5 Rf7 Qg6+ Kf8 Rd5 Rb7 Bc7 Rbb8 Rd6 Qg7
KR1rn3/4rnNQ/1nqb3B/1P3Rp1/3k3N/1Q2b1q1/3P1pbp/1B2R1bb w - - 0 1 illegal: No possible last move
1k2r3/2N3KQ/1n1rqPB1/r1n3q1/1r1bbNp1/NB6/Pr1nb2Q/Q6R w - - 0 1 legal: proof: c4 a5 f4 g5 b4 axb4 e4 d5 cxd5 f5 g4 Qd7 Na3 fxe4 f5 h6 Bb2 Qd8 Be5 Ra6 Bf4 Ra7 Rc1 Ra8 Rc3 Rh7 Rg3 gxf4 g5 Rh8 g6 Nc6 Rg2 Nb8 Rg5 hxg5 Ke2 Kd7 d4 c5 h4 Kc7 h5 b5 g7 e5 h6 e3 Kd3 e2 Ke4 e1R+ Qe2 b3 h7 b2 Nc2 b1N Rh6 f3 Qe3 f2 Rf6 c4 Nh3 g4 Na3 b4 Rb6 b3 Re6 b2 Nc2 c3 Ng1 Na6 d6+ Kb8 d5 Ne7 g8B Re2 d7 Bg7 d6 Nd5 Rh6 Nb6 Nh3 Qg5 Na3 c2 d8Q c1R d7 Rc6 Bb3 Re8 h8Q Rd6 Qh7 Bh8 Bg2 f1B Nf4 Red2 Qh3 Be2 Qf6 Bb7+ Nd5 Bg7 d8N Ra7 Ne6 Ba8 Nf4 Nc5+ Ke3 e4 Nc7 Ra5 Qh2 R2d4 Rh5 Rb4 Qc3 Be5 f6 Nd2 Qc1 Bb7 Qa1 b1R Bf1 Rb2 Rh3 Bea6 Bfc4 Bc6 Bf7 Be2 Bg6 Bc3 Qhg1 Ba8 Rh1 Bb7 Qgh2 Ba8 Kf2 Bd4+ Kg2 e3+ Kg3 Qe5 Kh4 Be4 Qc1 Qe6 Kg5 Qf5+ Kh6 Qg5+ Kg7 Bb5 Qg2 e2 Qgh3 e1Q Qh2 Qe3 Qa1 Be2 Bd1 Qb3 Bc2 Qbd5 Bb3 Qe6
b5Rr/2p5/3Q1q1N/n1nNq3/PK1rQqq1/5Pqk/3qN3/1nR1b1QB w - - 0 1 illegal: No possible last move
1rn2bN1/k1np2Q1/7B/3b1pB1/bq2bq1P/qBQ1P1N1/7r/1bR1K1Q1 w - - 0 1 legal: proof: b4 a5 g4 h5 d4 hxg4 f4 c5 a4 cxd4 b5 e5 Ra2 exf4 Rb2 b6 Rb4 axb4 a5 Ra6 axb6 Ra8 c4 f5 e3 g5 b7 b3 b6 b2 h3 g3 c5 f3 c6 g2 c7 g4 Qc2 f2+ Kd2 g3 Qc6 d3 Qe6+ Ne7 Qe5 Na6 b8Q Bb7 c8Q Nc7 Nc3 b1B Nge2 g1Q Nd5 g2 Qg3 Qh2 Bb2 g1Q Qg2 Qf4 Qg7 Qgg4 Ng3 Rh4 Be2 f1B Ke1 Bg2 Bd1 Be4 Bf6 Rh6 Qa7 Rb8 Bb3 Qh4 Qa1 d2+ Ke2 d1B+ Ke1 Bc6 b7 Ba4 Bg5 Bdf3 Nb4 Bd5 Nc6 Qb4+ Qac3 Bfe4 Rf1 Qf4 Rh1 Ra8 b8B Rh5 Qa6 Nc8 Qf1 Qde7 Qg1 Qed6 Ne7 Kd8 Bh6 Qa3 Ng8 Qdb4 Ba7 Rb8 Bb6 Ne7 Bd4 Kc8 Bf6 Kb7 Bfg5 Nc8 h4 Ka7 Be7 Rg5 Bf6 Rg6 Bfg5 Ra6 Rh2 Rd6 Rc2 Rdb6 Rc1 Rc6 Qd2 Rc2 Qdc3 Rh2
1n1K3n/3NpN1k/R2Rb1Rq/b1Q5/3Pnp2/P1N2qr1/Q2bBp2/2bb4 w - - 0 1 legal: proof: e4 d5 f4 b5 b4 a5 d4 axb4 g4 h6 g5 g6 f5 gxf5 g6 Ra6 Bg5 hxg5 c3 f4 c4 dxc4 Qd2 Rd6 Qd1 Rd5 exd5 Bg7 Nd2 Bh6 Nb1 Bf8 Kf2 c5 Kf3 f5 h4 c3 a3 b3 h5 b4 h6 g4+ Kg2 b2 d6 b3 h7 g3 Kf3 c4 g7 Kf7 d7 Kg6 Qe2 g2 Qf2 c2 Nc3 b1B Qe1 c1Q Nb5 b2 Be2 c3 Na7 c2 Ra2 Nh6 g8N Nf7 Qf1 Bh6 Nc6 Qf8 d8R Be6 Nf6 Rg8 Nd7 Nh8 Qf2 Qd2 Rh3 c1B Nce5+ Kg7 Rh2 Bc2 Nf7 b1N Rh1 Bg5 Rh6 Bd1 Rc2 Bh4 Rc6 Nc3 Ra6 Ne4 Rf6 Ba2 Rfd6 Be6 Rc8 Bg3 Rcc6 Bh2 Qe3 Bg3 Qc3 Be1 Qc5 Kg6 Nh3 g1B Nhg5 Be3 Rcb6 Nf6 Ne4 Rg7 Nc3 Ne4 Kg2 f3+ Kh3 f2 Kh4 Rg8 Rbc6 Kg7 Kh5 f4 Rcb6 Qd3 Rbc6 Beb3 Kg4 B3d2 Kf5 Qf3 Ke5 Ba4 Ke6 Kg6 Rcb6 Qh6 Ng5 Nf7 h8Q Bc6 Qhe5 Nh8 Qed5 Ba8 Nf7 Kh7+ Kf5 Bc6 Qa2 Rg3 Rg6 Ba8 Ke6 Bb7 Rd6 Bc8 Nd5 Bb4 Nc3 Bed2 Kd5 Bb7+ Ke6 Nc6 Nb6 Ba8 Kd7 Nb8+ Ke8 Bd5 Nd7 Be6 Kd8 Ba5+
2Q1N2r/2nQqnp1/R1qp4/b1BP1qN1/1Q1RP2b/p1K5/5p2/R1qr2k1 w - - 0 1 legal: proof: f4 c5 a4 e5 b4 exf4 g4 cxb4 Kf2 b5 Ke1 bxa4 Nh3 h5 Nc3 f5 Bg2 f3 Nb1 f4 Ng1 Bb7 Bf1 Be4 Bh3 Bf5 gxf5 Bd6 Bg4 hxg4 Ra2 Bc5 Ra1 Bf8 c4 Ke7 e4 Kf6 d4 Kg5 Kd2 Kh4 d5 a5 c5 d6 h3 Kg3 f6 Kg2 f7 a3 c6 a2 h4 a4 c7 f2 c8Q f1Q h5 b3 h6 g3 h7 f3 Bb2 Na6 Qd7 Be7 f8Q Bh4 Nc3 Nh6 Qc2 Nf7 Qd3 Qe7 Nb5 Nc7 Be5 b2 Qb3 b1Q Kc3 f2 Qfc8 Qbc1+ Qc2 a3 Nf3 Ra4 Ng5 Rd4 Qb7 Rd1 Bd4 Qe2 Bc5 Qg4 Rh3 Qf5 Qb8 Na6 Nc7 Kg1 Ne8 g2 Rd3 Nc7 Qb4 Rg8 Kc4 Rh8 Qcc3 Qc2 Rd4 Qa4 Qc2 Qc6 Kc3 Kh1 Qd3 g1Q Qa6 Qf1 Qac8 Kg1 Rb1 Rf8 h8R a1B+ Kc2 Bb2 Ra1 Bc1 Kc3 Be3 Rh6 Rh8 Rf6 Nh6 Rf8 Nf7 Rg8 Bd2+ Kb3 Qca6 Qbb5 Qg4 Qa8 Kg2 Nf6 Ba5 Qb4 Qc6 Kc3 Qf5 Rb8 Rb1 Rb6 Kh2 Qac8 Kg1 Ne8 Qd1 Ra6 Qd2+ Kc4 Rd1 Kb3 Qdf4 Kc3 Qc1+
1KnRbr2/1Q2r3/P3Q2q/n1R1Bnk1/n1ppqbN1/nNq4p/2P1R1Q1/8 w - - 0 1 legal: proof: e4 a5 d4 g5 h4 gxh4 b4 axb4 d5 f5 Bd3 e6 e5 exd5 Be4 fxe4 Qe2 d4 Qg4 Qf6 Qd1 Qd8 Kd2 Ke7 f4 d5 g4 b5 a4 h5 e6 Kf6 f5 c5 e7 c4 e8R e3+ Ke2 h3 Kf3 d3 Kf4 h4 a5 e2 a6 e1Q Qf3 b3 Bb2+ d4 Bc3 b2 Qf1 h2 Nh3 d2 Bb4 d1N Qe2 Bd7 Qe4 Ne3 Nf2 h3 Bd6 b4 Nd2 b1N Ra5 b3 Rc5 b2 Qg2 Rh7 Nb3 Qb6 Rd8 Qc3 Re1 h1Q Re2 Be8 Bc7 Re7 g5+ Kf7 f6 Kg6 f7 Na3 Ng4 b1N Qb7 Bh6 f8Q Nc6 Be5 Na5 Qf6+ Kh5 Qd6 Nf5 Qe6 Qhe1 Ke4 Kh4 g6 Bf4 Kd5 Kg5 g7 Qh4 Qed7 Qbh6 Qe6 Qhe1 Rc6 Rb8 Kc5 Qh1 Kb6 Qe4 Ka7 Qa1 Qc8 Nc3 Qe6 Na4 Rc5 Qc3 Qd5 Rf7 Qe6 Nge7 g8Q+ Rg7 Qed5 Rc8 Qge6 Rf7 Qdc6 Rf8 Qcd5 Rc7 Kb8 Nc8 Qdc6 Re7 Qcd5 Qee3 Qg2 Qe4
1Q2q2n/Bp4RN/Q4n2/PP2p3/3bqq1b/p1Q5/1NBKrp1k/1b1B1rn1 w - - 0 1 illegal: No proof kernel
4RR2/p2n3p/1kqr1Q1N/1pq5/1Nb1P2P/4p1bb/bq3QKn/1QR2rB1 w - - 0 1 illegal: No proof kernel
k5KR/pR3n2/p1QnrR2/1pRp3N/1R3PnP/2b1r3/2rB2Nr/5n2 w - - 0 1 legal: proof: e4 h5 b4 f5 g4 fxe4 a4 hxg4 a5 c6 a6 bxa6 b5 Rh4 b6 Rh8 Bb5 cxb5 c4 d6 b7 Nd7 bxc8R Nb6 Rb8 Kd7 Rc8 Qe8 Rb8 Qf7 Re8 Rc8 d3 Rc5 Ra8 Rd5 c5 Rd4 Ke2 Ra4 Ke1 Qc4 dxc4 Ra5 Qe2 Ra3 Qd1 Ra4 Kd2 Kc6 Kc3 Kb7 Kd4 g5 f4 e5+ Ke3 d5 h3 g3 Qc2 g4 Nf3 g2 Nc3 g1N Rb1 g3 Ne2 g2 Bd2 Nh6 Ng3 Nc8 Ne1 Ne2 Rb4 g1N Nh5 Nf3 Ng2 Ng3 h4 Ra2 Rg1 Nd6 Qc3 Be7 Rf8 Ng5 Rf6 Rc8 c6+ Ka8 c7 Ngf7 c5 Bf8 c6 Bg7 Qc5 Bh8 Rc1 Rb2 Qb6 Ra2 Rc5 Nf1+ Kf2 e3+ Kf3 Nhf5 Kg4 e4 Rd4 e2 Rb4 Nd8 Kg5 e1R Kg6 e3 Kh7 e2 Kg8 N5e3 Ng3 Ng4 Nh5 Rb8 c8R N8f7 Rd8 Rc8 c7 Bg7 Rg6 Bc3 Rf6 Rc1 Rf8 e1R Rd8 Rb8 c8R Re6 Rd7 Rcc2 Rb7 Re3 Rf8 Rbe8 Qc6 Nd8 Rh6 R8e6 Rff6 N8f7 Rh8 Ra1 Rd4 Rae1 Rb4 R1e2 Ne1 Rh2 Ng2 Rf3 Rcc4 Rd3 Rc5 Rde3
2n1KnrR/1b6/QR1P1BBN/3rqp2/rpbk1q2/RR4p1/nP1b4/5Rr1 w - - 0 1 illegal: No proof kernel
1N2R3/5B2/3pB2q/KN2B1rN/Q1nr1b2/P1pr1q2/qNP1k2q/4q1nr w - - 0 1 legal: proof: d4 f5 e4 fxe4 f4 a5 b4 axb4 f5 e5 a3 exd4 Bb2 g6 Bc1 g5 h3 Ne7 Ra2 Ra5 Rb2 Ra8 Rb3 Ng8 Rf3 Nh6 Rf2 Ng8 Rf4 gxf4 g4 b6 g5 Ba6 Be3 Be2 Bc1 Bg4 hxg4 Be7 Nh3 Bd6 Ng1 Bf8 Kd2 Kf7 f6 Kg6 f7 h5 Ba6 c5 Bb7 e3+ Kd3 f3 Kc4 f2 Kb5 f1Q+ Ne2 b3 Rh3 h4 Rf3 h3 Bc6 d3 Qe1 c4 Nec3 h2 Qd2 h1R Nd1 d6 Qg2 c3 Bd2 e2 Be8 e1Q Kb4 b5 Qf2 b2 Qg1 R8h4 Qf2 Bh6 Bc6 Nd7 Be3 d2 Qe2 Ra5 Qc4 Ne7 Bd4 Nf5 Re3 Qh8 Re8 Ne3 Bd5 Qf3 Be6 Ne5 Qc6 N3c4 f8N+ Kg7 g6 Kf6 g7 Kg5 g8N Kf4 g5 Qee3 Nf2 d1R g6 Rd3 Nd2 b1Q+ Nb3 Qbe1 g7 Q3d2 Nd1 Qh2 Nd7 Kg3 Ngf6 Bf4 g8B Qh6 Ne3 Kf2 Nb8 Ke2 Nd1 Rg4 Nb2 Rg5 Na1 Ra6 Bgf7 Ra4+ Kb3 b4 Nh5 Qg4 Qd7 Nf3 Be5 Ng1 Qa7 Qf3 Qd7 Ra7 Qb5 Rc7 Ka4 b3 Kb4 Rc5 Qa6 Rcd5 Qa4 R5d4 Kb5 Ne3 Kb6 Bg3 Ka5 Bf4 Nc4 b2 Nb3 b1Q Nb2 Rd1 Qb5+ R4d3 Qa4 Qa2 Nd4+ Kf1 Nb5 Ke2 Bg4 Rd4 Bd7 R1d3 Bde6 Nc4+
2rn4/3BP1N1/n4Q2/NR1bq3/p1rb4/P1rR2qK/pRrNp3/1R3bkn w - - 0 1 illegal: No possible last move
nkn3RK/b1r2pb1/4B1Nb/n5R1/bB5q/BPp2P2/1nprp3/Q2BR3 w - - 0 1 legal: proof: g4 b5 e4 h5 c4 bxc4 b3 hxg4 e5 a5 e6 a4 Nc3 a3 Na4 dxe6 Qf3 e5 Nb2 axb2 Qd1 e4 Ke2 Kd7 Ke3 b1N Kf4 g5+ Ke5 c5 h4 Kc7 a4 c3 d4 c2 h5 e3 a5 e2 a6 e1N d5 c4 a7 g3 f3 g2 h6 g4 h7 c3 Rh2 g3 Qd4 Bd7 Rh4 Nd3+ Ke4 e5 Nh3 g1B Ba3 g2 Qc4+ Nc6 Qa4 Nb2 Rh5 Nge7 Be2 Nc8 Rg5 Na5 Nf4 Be3 Bd1 g1B d6+ Kb7 Kd5 e4 Ke5 Nd2 Ng6 Be8 d7 Ndc4+ Kf5 N4b6 Bb4 Qe7 d8B Bgf2 Qa2 Ba4 Bc7 Bc1 Bcd6 e3 Qb1 Qe4+ Kf6 Qh4 Bdc5 Rb8 a8B+ Kc7 Ba3 Rb7 Bcb4 Kb8 Qa2 Rd7 Bd5 Na8 Be6 Rc7 Rb1 Rg8 h8R Rg7 Rg8 Rh7 Be2 Bd2 Re1 Rh8 Bd1 e2 Qa1 Ba7 Ke5 Rh5 Rf5 Rg5 Kf6 Rg4+ Rg5 Rd4 Qb1 Be3 Qc1 Rd2 Qa1 Bfc5 Kg7 Bf4 Rgg1 Bh6+ Kh8 Bcf8 Rg5 Bfg7+
qBr3nn/4R1q1/6PP/5Br1/1B1q1Kp1/b3Q1nN/1k4rb/Rr1QB2b w - - 0 1 legal: proof: f4 e5 g4 exf4 a4 c5 d4 cxd4 Bd2 b5 axb5 f3 Bc1 g6 Nc3 g5 Nd5 h6 Nf4 gxf4 g5 h5 Qd3 Ke7 Qf5 Ke8 Qg4 hxg4 Kd2 Ke7 c4 Kd6 b4 Ke5 e4 d5 h4 a5 c5 f5 c6 a4 g6 a3 c7 f2 h5 d3 b6 Kd4 e5 a2 h6 f3 e6 f4 e7 Ra5 e8Q Bb7 c8Q Nc6 b5 Ne5 Qa8 Ba3 Bh3 f1R Qa7 f2 Qf8 f3 Rh2 Nf7 Bg2 Qa8 Rb1 a1B Nh3 Rg1 Qe8 f1N+ Ke1 Kc3 Kf2 d2 Qa6 d4 Qe3+ d3 Qa7 d1R Bd2+ Kc2 Be1 Be5 Ra1 d2 Qa6 Bc6 b7 Kb2 b8B Rb1 b6 d1Q b7 Ng3 Bd6 Qd4 b8B Bf4 Qf1 Rg5 Bdb4 Qg7 Qa7 Be5 Ke3 f2 Be4 Rg2 Qg1 f1Q Bf5 Qc4 Qe7 Bc7 Qd6 Be4 Kf4 Qcd4 Rh1 Ne7 Qe3 Rc8 Rg1 Nh8 Rh1 Ng8 Rh2 Rc2 Re2 Bh1+ Qe4 Qda7 Qd3 Rd2 Re7 Rg2 Qf3 Bb6 Qd7 Bg1 Qe3 Bh2 Qd1 Qad4+
b2r3k/2N2P2/1nqpQ1p1/3qR1pq/pK3B2/n3P1n1/1N4NQ/2NRb2q w - - 0 1 legal: proof: f4 b5 g4 f5 a4 bxa4 d4 e5 d5 exf4 d6 f3 Kf2 cxd6 Ke1 d5 Bd2 d4 Be3 Ne7 Bc1 Ng8 Bh3 a5 Qd3 f4 Qd1 Ra6 Kf1 Rf6 Ke1 Rf5 gxf5 Ba3 Bg4 Bf8 Bh5+ Ke7 Bg6 hxg6 Qd2 Kf7 Qd1 Ke8 Kd2 Kf7 b4 g5 c4 f2 h4 f1Q b5 d3 Kc3 a3 b6 f3 c5 a2 h5 d6 h6 f2 c6 d2 b7 a4 c7 Qe8 h7 Ne7 f6 Qh3+ Kb4 f1Q Na3 Qc6 Nc4 Nd7 b8N Nf5 Na6 Ng3 Qc2 d1Q Bf4 Qh5 Nb2 Bb7 c8Q Nb6 Nc7 Qdd5 Rd1 a1N e3 Ba8 Rh4 Qff3 Qf2 Qh1 Ne2 Be7 Qh2 Rd8 h8N+ Kg8 f7+ Kh7 Ne6 Bf6 Nc1 Be5 Nc7 Bc3+ Ka3 Ba5 Ng6 Be1 Qe6 Bf2 Rg4 Re8 Nh4 g6 Kb4 Kh8 Ng2 Rd8 Rf1 Nb3 Re1 Nd2 Rd1 Nb1 Rh4 Na3 Rg4 Kg7 Rh4 Qe2 Rh8 Qh5 Re8 Kh7 Qf5 Kg7 Re5 Kh8 Qe6 Be1+
RnrR4/b1bp4/R2P2Q1/PpNNnK2/2p3Q1/2B3R1/n3b1bk/1rqq2q1 w - - 0 1 legal: proof: c4 g5 f4 e5 b4 exf4 h4 gxh4 e3 a6 c5 b6 b5 bxc5 b6 Ke7 Qa4 Ke8 Bb5 axb5 Qd1 c4 Ke2 Ke7 Kf3 Kd6 Ke4 c5 d4 f5+ Kf3 h5 g4 c3 a4 c2 d5 Ke5 e4 h3 b7 h2 a5 h4 g5 c4 g6 h3 g7 Qb6 Qe1 Nf6 g8R Bc5 Qh4 Ng4 Ba3 c1B Ke2 f3+ Kf1 Kf4 e5 f2 Ke2 f1B+ Ke1 Be2 e6 Rh7 Qg5+ Kg3 e7 f4 e8Q f3 Qeg6 Bf4 Nc3 Bc7 Kd2 f2 Rd8 f1Q Na4 Qd1+ Kc3 Rf7 Bb2 Rf1 Ra3 Be3 d6 Qc5 Q5h5 Qg5 Rb3 Ba7 Nc5 Ne5 Ba1 Qc1+ Kd4+ Kg2 Ke4 Qd1 Qf6 Qgc1 Bc3 Re1 Kf5 Kg3 Nf3 Kg2 Rf1 h1N Nd4 h2 Nc2 Nf2 Nb4 h1Q Nd5 Qg1 Qg4+ Kh2 Qfg6 Nfd3 Rf3 Nb4 Re3 N8a6 b8R Na2 Rb6 Nb8 Ra6 Bb7 Rg3 Nbc6 Rb2 Rc8 Rd2 Nb8 Rdd3 Ba8 Rde3 Nf7 Ree8 Ne5 Ne3 Baf3 Nd5 Bg2 Qf7 Qb2 Nb6 Nbc6 Re6 Rb8 Ree8 Qdd4 Nd5 Rb1 Rc8 Qdd1 Red8 Qbc1 Qfg6 Rb7 Ra8 Rb8 Nb7 Rc8 Nc5 Nb8
4nrnn/1qN1p2b/2RpP3/Q2K1k2/n1RR1p2/3n1P2/B2b2rb/2n1BQR1 w - - 0 2 legal: proof: d4 c5 b4 cxd4 a4 a5 h4 axb4 Be3 g5 Na3 gxh4 Bc1 bxa3 Kd2 h5 Kd3 b5 Ke4 f5+ Kd5 Kf7 e4 Kf6 c4 d3 g4 d2 c5 a2 f3 d6 a5 b4 c6 b3 a6 h3 a7 b2 c7 b1N Ba6 h4 Be2 h2 Ba3 h3 Bb2+ Nc3+ Kd4 Qd7 Rb1 a1B Rc1 Na4 Rc6 Na6 Qc2 d1N Qc5 Ne3 Qb5 Nc4 Bf1 Bh6 Bc3 Ne5 Bc4 Ng6 Qa5 Bd2 Ne2 f4 Rd1 h1N Rg1 h2 Ba2 Nf2 e5+ Kg5 Rc4 h1N Kd5 Nd3 Nd4 Nc1 Nb5 Nf2 e6 Bb7+ Rc6 Rh2 c8R Nfd3 Nc7 Rg2 Rd1 Rb8 a8Q Nh8 Bb4 Kf6 g5+ Kf5 g6 Bd4 g7 Bg1 Qa7 Bh2 Qf2 Ra8 Qf1 Rb8 Re1 Ra8 Re4 Rb8 Rd4 Ba8 Nb5 Qb7 Rc7 Rf8 Bc3 Be3 Be1 Bd2 Rc8 Nh6 g8R Nc7+ Kc4 Ne8 Kd5 Qa7 Rg7 Ng8 Nc7 Bb7 Rb8 Ba6 Rbb4 Qb7 Rg4 Nf2 Rg6 Bd3 Rbc4 Bb1 Rg7 Nfd3 Rg4 Re2 Rg1 Rg2 Qb4 Bc2 Qa5 Kf6 Bf2 Ne1 Qa6 Bh7 Qa5 Ned3 Be1 Kf5
4qRQ1/p1pbrb1K/r2rr2N/PQP1b3/q1rR3Q/4b3/6Rn/k2Nn1N1 w - - 0 1 legal: proof: e4 g5 g4 b5 f4 gxf4 a4 h5 g5 d5 b3 dxe4 Ba3 b4 Be2 bxa3 Bg4 hxg4 Kf2 Kd7 h4 Kd6 d4 Kd5 g6 e5 c3 f5 g7 e3+ Ke2 e4 b4 Kc4 d5 a2 a5 g3 b5 g2 b6 f3+ Ke1 e2 Kd2 e1R h5 f2 d6 f1B d7 e3+ Kc2 e2 h6 f4 h7 f3 b7 f2 Qc1 Qe8 d8R Na6 b8N Nh6 Rd7 Nc5 Rd5 Bd6 g8Q Nd3 Kd2 Kb3 c4 Ng4 c5 Be5 Rh6 Bd7 Rg6 Nh2 Qc4+ Kb2 Nc6 Rd8 Ke3 Rc1 Ke4 Ne1 Qa6 Rc2 Rd4 Rc4 Nh3 g1B Ne7 Ng2 Rg3 Ne1 Nc3 Bg2+ Rf3 f1R Nf5 Be3 Nh6 Rh1 Rc1 a1Q Ng1 Qa4 Rc2+ Ka1 Qb5 Bgh3 Nd1 Bhe6 Rf8 Bf7 Qg5 Rg8 h8Q Rg6 Qh4 Re6 Qg8 Ra6 Nh3 Rf1 Ng1 Rff6 Rd2 Rfe6 Kf5 Nef3 Rc2 e1R Rf2 Re2 Rg2 Ne1 Qb7 Bd6 Qb5 Re7+ Kf6 Re6+ Kg7 Be5+ Kh7 Rd2 Rdg4 Rdd6 Rd4 Rb8 Qgg4 Rbb6 Qg8 Re7 Nf3 Rde6 Ng1 Rbd6
3rRQ2/1P2q1q1/NK2brn1/1q3b2/B3k3/1BB4N/RbrrP1Pq/n2br3 w - - 0 1 illegal: No proof kernel forced: bxLB
3n3b/1Np1K1Pr/P1r2n2/5qk1/q1BBbrPN/R2b2r1/2R1b3/1b2QNr1 w - - 0 1 illegal: Other
n1N5/rn4k1/n1B3p1/1q2P1Bb/R2b3q/b2P1Rqr/1nNPBQ2/1K3qr1 w - - 0 1 illegal: Other
2bR1Nn1/3n4/1n1n1n2/3P1n1r/3Pq1Q1/K3P1Np/B1rBpk1b/3RqqR1 w - - 0 1 illegal: Other
7r/pR1B1qBQ/b1r2N2/2n1PPR1/pNn3P1/1nk1bRr1/1q3K1n/r1n5 w - - 0 1 illegal: No possible last move, all moves rejected
2r2q1N/2r5/B3R2p/Rnk4P/R1b3b1/NrnqbPK1/Qp1qnp1P/2B5 w - - 0 1 illegal: Other
B3n3/1PB1n3/2N2b2/b1br1QP1/N1n2rQ1/bRnPq1Rb/K1n2r2/4q2k w - - 0 1 legal: proof: f4 b5 h4 g5 a4 bxa4 c4 gxh4 f5 d5 f6 dxc4 Nh3 exf6 Ng1 f5 Ra3 f4 Ra2 Qf6 Ra1 Qd8 b4 Kd7 g4 Kd6 e4 Ke5 b5 c5 d3 h5 Kd2 a5 Kc3 f5 Kb2 h3 b6 c3+ Ka2 h4 g5 c2 Qg4 a3 Rh2 a4 Qd1 c4 Bd2 c1B Qe2 f3 Bc3+ Kf4 e5 Kg3 e6 f4 e7 f2 e8Q f3 Bf6 c3 Rh1 c2 Be7 h2 Bc5 h3 Nd2 Ra5 Qb5 Qe8 Qe4 Rh4 Qb7 Nd7 Q5a6 Rf4 Bg2 f1N Qb5 f2 Bf3 Ndf6 Bc6 Ne3 Nb1 f1R Qe7 Bd2 Bf3 c1B Ba8 R1f2 b7 Kg2 Bd4 Nc4 Qf5 Rd5 Ba7 Ba5+ Qe2 Bc5 Qb2 Qe5 Bb6 Ne7 Qe2 Ne8 Nc3 Qe6 Kb1 a2+ Kc2 a3 Kb3 Qe3 Rb1 a1N+ Ka2 Nc2 Kb3 a2 Qd7 a1B Ka2 B1a3 Na4 Bf6 Qe6 Bd7 Nf3 Bc8 Rhf1 h1N Bc7 h2 Nd4 Ng3 Rb3 h1Q Nc6 Ne4 Rg1+ Kh2 Qe5 Bh3 Rg3 Qe1 Qf5 Kh1 Qeg4 Nc3+
1N2R2n/3N1rpp/1rnQp2B/6nK/qq2R2N/b1PP1q1R/4rq1P/k7 w - - 0 1 legal: proof: g4 a5 b4 axb4 d4 c5 a3 cxd4 Bh3 f5 Bg2 fxg4 Bc6 Ra7 Bd5 Ra8 Ba2 b3 Bf4 bxa2 Bd2 Ra5 Bc1 Ra8 c3 d5 Kd2 d3 Ke1 d4 Bh6 d2+ Kf1 d3 Qe1 d1N Bc1 Nb2 Qd1 d2 Qe1 Bf5 Qd1 Bd3 exd3 Ra6 Ke2 Ra8 Qf1 Nd1 f4 Kd7 a4 Kc6 f5 b5 a5 b4 a6 Kb5 a7 Ka4 f6 Kb3 f7 e6 Na3 g3 Kf3 g2 Kg4 Nf2+ Kh5 d1Q+ Nf3 g1Q Qe2 Nc6 Qe1 Nh3 Nc2 Nge7 Qe2 Qdb6 Qe3 Ng5 Qc5 Ng6 Bd2 Kb2 Qe7 b3 Qd6 Qb4 Nd4 Qf2 Re1 Rb8 a8N Rb6 Re4 Rg8 Rh4 Nh8 Rh3 Be7 Rc1 a1Q f8R Qaa4 Re8 Rf8 Ra1 Qde2 Re1 Rf7 Be3 Qef1 Nh4 Qh1 Bc1+ Ka1 Re4 b2 Bf4 b1R Bd2 Na5 Nc6 Rb2 Nb8 Nc6 Be3 Re2 Bd2 Rb5 Nb6 Qhd1 N6d7 Rb6 Qc7 Qb2 Be3 Ba3 Qd6 Qbb4 Bd2 Nf3 Bh6 Ng5 Re5 Qh1 Re4 Qhf3+
3Bb1Bn/1Pb2Rr1/b2rQKpb/NQ1Pb1Q1/2r3P1/2R1nnq1/5pkb/8 w - - 0 1 legal: proof: f4 b5 g4 h5 a4 bxa4 c4 d5 f5 dxc4 f6 h4 Nc3 exf6 Ne4 f5 Ng3 hxg3 Bh3 f4 Bg2 Ne7 Bf1 Ng8 h4 Ke7 d4 Ke6 Kd2 Kd5 Kc3 Ke4 b4 f5 e3 a5 b5 c5 d5 f3 b6 a3 h5 f4 h6 f2 b7 a2 h7 g6 Nh3 a4 Qe1 Kf3 e4 g2 e5 g1B e6 a3 e7 Qc7 e8Q Bh6 Rb1 a1B+ Rb2 a2 Qd8 Bd7 Qd2 Nc6 Qf6 Be8 Be2+ Kg2 Bd3 f3 Qd4 Qg3 Bf5 Ne5 Qc2 Rd8 Qf4 Bh2 Qe3 Rd6 Bd2 f1B Qc1 f2 Ng1 Nf3 Ne2 Bf4 Ng1 Nh6 Be6 Nf7 Ne2 Rg8 h8Q Rg7 Nd4 Be2 Qf8 Nh8 Bg8 Bd3 Qe6 Be2 Kc2 c3 Rb3 Ba6 Nc6 c4 Na5 Bb2 Re1 Bh6 Bg5 a1N+ Kb1 Nc2 Bd8 Ba1 Qg5 Ne3 Qff7 Bb2 Qfd7 c2+ Ka2 c1R Qb5 Bd4 Rc3 Bb6 Kb2 Bc7 Re2 Nf5 Re5 Ne3 Rf5 Rc2+ Ka3 Rc1 Kb4 Rc2 Kc5 Rc1 Rb3 c3 Rf7 c2 Rc3 Ra1 Rf8 c1B Rf7 Ra4 Qc4 Nh4 Kd4 Nf3+ Ke4 Nd4 Qb5 Rc4 Qf4 Bd2 Ke5 Nf3+ Kf6 Nf1 Qd4 Bdf4 Qe5 Ne3 Qg5 Be5+
QbQq2N1/3R2b1/3Q3p/bp1K1r1P/NR6/3P1Pnn/1p1B2b1/1bbq2kr w - - 0 1 legal: proof: c4 f5 b4 d5 h4 dxc4 e4 fxe4 g3 a5 Na3 axb4 Bh3 g5 Nb1 g4 Qf3 gxh3 Qh5+ Kd7 Qd1 Ke8 Ke2 Kd7 Ke3 Ke6 a4 Kf5 a5 b5 a6 e5 f3 c5 a7 b3 Ra2 c3 Ra3 c4 Qf1 h2 Ra6 c2 Re6 c3 Rd6 b2 Rh6 Nc6 Qe1 Bg7 Rd6 Nge7 Qf2 Nd4 Nh3 Ne6 Ra6 Nf4 Ng1 Nh3 Ke2 e3 g4+ Kf4 g5 e4 g6 Bf5 Qf1 Kg3 Qd1 Kg2 Rd6 h6 h5 Rf8 Rd7 Rc8 Ke1 e2 a8Q Rc6 Qc8 Ra6 Qa8 Ra1 Qc8 Be6 Qa8 Nf5 Qc8 Ng3 Qa8 Nf4 Nh3 Ba2 Ng5 Nh3 Nh7 Rf4 Nf6 Rf5 Rf1 h1B Rg1+ Kh2 Ng8 Bg2 Qc8 Be5 g7 Bb8 Na3 Bb1 Nc4 Nf4 Kf2 e1B+ Ke3 Nh3 Kd4 e3 Nb6 e2 Na4 Bf2+ Kd3 Bd4 Re1 Bde5 Rg1 e1B Ke3 Bf4+ Kd4 Bfe5+ Kc5 Qe7+ Kd5 Qd8 d3 Bd2 Qe2 Be1 Be3 c1Q Bd2 c2 Qe3 Qd1 Qec5 c1B Qd6 Bf2 Re1 Bb6 Re4 Kg1 Rb4 Ba5 Ne7 Ra3 g8Q Rc3 Qe8 Rc4 Ng8 Bg7+ Qee5 Rh4 Qdc6 Ng5 Q6b7 Rh1 Qa8 Rf4 Qe7 Nh3 Qd6 Rf5+
1Qq1bQ2/pq1p1b1q/1PB3N1/PN2P1b1/2kr2K1/pn2r3/Rp1r4/1B2n1B1 w - - 0 1 illegal: No proof kernel
Q3R3/1bp1P1nb/6pb/p1Bq2Pb/2rR1Nb1/1N2Q1b1/Pp5Q/1knr3K w - - 0 2 illegal: No possible last move
2r5/BBP1n1pb/b1bq1r2/Rnb5/R3p3/KRRq1N2/1Pq2QP1/1k4rb w - - 0 1 illegal: No possible last move
4N2b/1QNbrpp1/3q4/QRP2rkP/5N2/1Kn1P1r1/b1rb1R1n/2Qb4 w - - 0 1 illegal: Other
2kr4/r2N2rP/br2K3/2qBN1Rq/P3Pr1q/2np1nP1/1P3n2/1nQ3R1 w - - 0 1 illegal: No proof kernel
6Q1/5q2/3K1QPq/5rPb/P1nPB2n/3pPnRn/Q2B2b1/2n1q1kr w - - 0 1 legal: proof: d4 a5 f4 c5 a4 e5 fxe5 d5 b4 axb4 Ra3 c4 Rd3 cxd3 c4 g5 g4 Bd7 h4 Be7 c5 Nh6 Nh3 Qb6 Nf4 gxf4 g5 Ng8 g6 Qd8 Na3 Bc8 Nc4 Bg5 hxg5 dxc4 Kd2 Kd7 c6+ Ke6 e3 Kf5 e6 Ke4 e7 b5 e8Q+ Ne7 c7 h5 Qe2 f5 Rh4 b3 Kc3 b4+ Kd2 c3+ Ke1 b2 Kf2 b1Q Qf8 b3 Bd2 b2 Qe1 c2 Qe8 c1N Bb4 Ra5 Bd2 Nc6 Qd1 Ne5 Be2 Nc4 Rg4 h4 Kg2 h3+ Kf2 h2 Rg2 h1N+ Ke1 f3 Qc2 f2+ Kd1 f1B Rg4+ f4 Qg8 Rf5 Bb4 Bg2 Qf8 Nf2+ Ke1 Rh1+ Bf1 Kf3 Qe8 Nh3 Qf7 Qh8 Qe6 Qh6 Qg8 Qa2 Qf8 b1N Qf6 Nbd2 Kd1 Kf2 Rg3 Qb1 Qa2 f3 Ba5 Bd7 c8Q Kg1 Qg8 f2 Bb4 Nf3 Bd2 Qb7 Be2 Qd5 Bf1 Qf7 Be2 Nh4 Bf3 Nc6 Be4 f1Q+ Be1 Nd6 Kd2 Ne5 Kc3 Nef3 Kb4 Nc4 Bc3 Qe1 Bd2 Rf4 Kc5 Bg4 Kc6 Bh5 Kc5 Rf5+ Kc6 Nb6 Kd6 Nc4+
1k1NB1Rb/8/Q1Kn1np1/Nn1pB2q/3rn2N/1R5p/1BB3b1/3qRqB1 w - - 0 1 legal: proof: d4 b5 f4 c5 h4 cxd4 a4 a5 axb5 e5 h5 exf4 h6 g6 g3 Ra6 Rh4 Re6 Rh1 Re7 Be3 f6 Bc1 Rg7 hxg7 fxg3 Kd2 h5 Kd3 d5 e4 Kd7 b4 Kc7 c4 h4 e5 g2 c5 h3 c6 a4 e6 f5 b6+ Kd6 c7 f4 e7 f3 e8B f2 b7 a3 b5 a2 b6 Rh4 Nf3 g1Q Qe2 Bg4 Na3 Nc6 b8B Na7 b7 Qg5 Rb1 a1Q Rb3 Qh5 Bb2 Nf6 g8R Nc8 Ba7 Bg7 b8B Bh8 Bg2 f1N Bb6 Nd7 Nc4+ Kc6 B6a7 Ng3 Na5+ Kd6 Qf1 Nf6 Qe2 Qf2 Re1 Qf1 Bb6 Be6 Bh1 Re4 Bg2 Bg4 Nh4 Rf4 Be4 Bf3 Kc2 d3+ Kc3 d2 Kd4 d1N Qa6 Bg2 B6a7+ Ke7 Kc5 Nc3 Kc6 Qad1 Bg1 Nb5 Bc2+ Re4 Bba7 Ke6 Bad4 Ncd6 Be5 Rb4 c8N Re4 Kc5 Rd4 Na7 Nge4+ Kb6 Ke7 N7c6+ Ke6 Nd8+ Ke7 Ndb7 Ke6 Kc6 Ke7 Nc5 Kd8 Ncb7+ Kc8 Nd8+ Kb8
4b2R/pkq1K3/1N3n1n/2R5/1Np3Bb/2N2qQb/1Bn1p1rR/RB2rRb1 w - - 0 1 legal: proof: e4 b5 c4 f5 h4 fxe4 a4 d5 axb5 dxc4 Ne2 g5 Ng1 gxh4 Ke2 Kd7 Ke3 h5 Kf4 c5 Kf5 e5 d4 e3 b4 e2 g4 e1B f4 c3 d5 e4 b6 h3 b5 h2 d6 h4 g5 e3 g6 h3 b7 c4 g7 e2 b6 Kc6+ d7 c2 Ke6 Qg5 f5 Bc3 f6 Rh5 f7 Qf4 Bb2 c1N Qd3 Bcb4 Nf3 Rf5 Ne1 Bbc5 Qg3 Bg1 Nc2 Nh6 g8B Nd3 Nc3 Ne1 Bh7 Be7 f8R Qc7 Bg6 Bh4 Nb4+ Kc5 Bg2 Rf1 Bb1 Nc2 Bf3 Rc1 Bg4 Re1 Nba2 Kc6 Rf1 Na6 b8N+ Kb7 Nb4 Nc5+ Kd5 Ne4 Ke6 Nf6 Ke7 Qf4 d8R Qc7+ Kf8 Bf5 Rd5 Bg6 Rc5 Be8 Nd7 Rd8 Ne5 Rd5 Nd7 Rg5 Ke7 Rg6 Qe3 Rg5 Be6 Rg3 Bg4 Rg2 Qg3 Be3 Rhg1 h1Q Rf2 h2 Rgf1 Rg1 Rg2 Bd4 Rgf2 Qf3 Rg2 h1B Rh2 Bg2 Ke6 Kc8 b7+ Kd8 Nb6 Bh3 Ra4 Rg2 b8R+ Qc8+ Kd6 Bf2 Ra1 Bg1 Rb7 Qb8+ Ke6 Qbf4 Rh7 Qb8 Rh8 Qc7 Nd7 Kc8 Ke7 Qcc6 Nb6+ Kb7 Ncd5 Qc8 Nc3 Qc7+
5Q1n/1br1RB2/bQ2r1Qq/6RB/1p4Qp/2q1brB1/2p1N1Q1/k1rN1K2 w - - 0 1 legal: proof: c4 d5 cxd5 e5 b4 a5 f3 axb4 f4 exf4 h4 g5 g3 Nc6 Nf3 Nd4 Ng1 Ne6 Kf2 g4 Ke1 Ng5 hxg5 fxg3 d4 b3 a4 Kd7 e4 Kd6 g6 b5 g7 c5 a5 h5 a6 f5 a7 f4 Nd2 h4 Ndf3 g2 Kf2 b2 Be2 b1B Ne5 g3+ Ke1 f3 Bb2 c4 Ra2 c3 Nd3 b4 Nf2 Nh6 g8B Bd3 Ra5 c2 Rc5 Rb8 a8Q Rh7 Be6 Qc7 e5+ Ke7 Bg8 Bda6 e6 Kf6 e7 Nf7 e8Q Nh8 d6 Rb6 d5+ Kf5 Qac6 Bcb7 d7 Bg7 d8Q Bd4 Qf7+ Ke5 Qdf8 Qd6 Bc3 Qh6 Qfg6 Rc7 Bd2 Be3 d6+ Kd4 d7 Rb5 Qg5 Rb6 Qcg6 Rbc6 Rb5 Rf6 Bc1+ Kc3 Bf7 Rd6 Bd2+ Kb2 Rh2 Bd4 Bf4 Rdc6 Qd2 Ka1 Re5 Be3 Re7 Re6 Qdd5 Bd4 Qc6 Be3 Qb6 Bc5 d8Q Be3 Qdd5 Bd4 Nd1 Bc5 Nc3 f2+ Kd2 f1Q Bh5 Bf2 Nge2 g1R Rh3 g2 Rg3 Bd4 Rg4 Qf3 Bg3 Rc1 Nd1 g1R Qdc6 Qa3 Qg2 Rf1 Qf4 Qb3 Rg5 Rf3 Ke1 Bf2+ Kf1 Qc3 Qg4 Be3+
knQ3r1/qn1n2p1/3pp1r1/1pQ1B1Q1/Br1R4/2B4Q/bN1Rn2N/b1R1K3 w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 h5 d4 hxg4 Nh3 c5 Ng1 cxd4 h4 e6 c4 d3 a4 b3 f4 g3 c5 g2 c6 b2 a5 b6 h5 Bd6 c7 Bb7 c8Q Bf3 a6 Bc5 a7 Ke7 h6 Kd6 f6 Nc6 f7 Nf6 f8Q+ Kd5 h7 Nb8 f5 Qe7 Nd2 b1R Nc4 Be3 Bb2 Bd4 Bc3 Rb4 Rh4 b5 Qc1 Bd1 Be2 Bb3 Bd1 Ba2 Nf3 g1N Ba4 Ne2 Qg5 Qf7 Rc1 d2+ Kf1 d1N Nb2 Be5 Nh2 Ne3+ Ke1 Nc4 Rg4 Rg8 h8Q Na5 Qh3 Nb7 Rg2 Rh8 Rf2 Rh6 Qfc5+ Ke4 Rg2 Rg6 Rf2 Ne8 f6 d6 Rg2 Qe7 f7 Nf6 f8B Nfd7 Rf2 Qf7 Be7 Bd4 Bf6 Qe7 Qgh5 Qf7 Qcg5 Qe7 Be5 Kd5 Qch8 Kc6 Rg2 Nf4 Rd2 Ne2 Qe8 Na6 Qeh8 Rg8 a8R Qf7 Rf8 Nab8 Rc8+ Kb6 Rf8 Qe7 Rf4 Ka7 Rg4 Bg1 Rgd4 Ka8 Qgg2 Be3 Qd5 Bg5 Qc5 Bf6 Q5h6 Qd8 Qg5 Qc7 Qf3 Qa5 Qhh3 Qb6 Qfc6 Qa7 Qc8 Rf8 Bf4 Rb3 Nd1 Rb1 Ba5 Rb4 Rd5 Bc3 Rd4 Rc4 Be5 Ba1 Bc3 Rb4 Nb2 Rg8
rNB2Bq1/p3bRbb/1k3NB1/2n1Q3/2b4q/5R1B/Nn2pBK1/1B1nqr2 w - - 0 1 legal: proof: e4 b5 d4 c5 h4 cxd4 a4 bxa4 e5 g5 hxg5 f6 Bc4 fxe5 Bf1 e4 f4 d5 Kf2 Kd7 g4 Kc6 b4 h5 c4 e5 b5+ Kb6 g6 a3 g5 e3+ Kg2 e2 g7 e1Q f5 a2 f6 d3 f7 d4 g6 h4 Rh3 d2 Nc3 d3 Nge2 e4 Nf4 e3 Rf3 e2 Nh5 Bg4 Nf6 Nh6 g8B Nf5 g7 Na6 Bh7 Nc5 g8B Be7 f8B Nd6 Bg6 Bf5 B8h7 Be4 Qc2 d1N Be3 d2 Qb2 Qb8 Rc1 a1B Na2 Rg8 Qe5 h3+ Kg1 h2+ Kg2 Rg7 Bf2 Rf7 Rc3 Bd3 Rf4 Bf5 Rcf3 Be6 Bb1 Bf5 Bg6 h1Q+ Kg3 Qh7 Bh3 Qh4+ Kg2 Bb2 Bh6 Qg8 Bf8 Ka5 b6 Bc3 b7 Kb6 b8N Bc2 Ng4 Bb3 Qg5 Bg7 Nf6 Bc2 Qe5 Bd3 Bh5 Bh7 Rf5 Ne4 Bg6 Nb2 R5f4 d1B Rf5 Bb3 R5f4 Kb7 Rf5 Nc3 R5f4 Nd7 c5 Ncd1 Rf5 Bc4 c6+ Kc8 c7 Kb7 R5f4 Nc5 c8B+ Kb6 Ng4 Rf6 Rf5 Rd6 Rf7 Rd4 Nf6 Rf4 Bbe4 Rf5 Bb1 Rg5+ Kh2 Rg4 Bd4 Rg1 Bf2 Rh1+ Kg2 Rf1
4qNR1/BRK3pr/Q5pn/2BqN1RR/qr1bb3/2q4r/2B4B/k1n3rB w - - 0 1 legal: proof: f4 c5 a4 e5 d4 exf4 g4 cxd4 g5 b5 g6 hxg6 axb5 Qf6 Kf2 Qb6 Ke1 Qd8 Kf2 Ke7 Kf3 Kd6 Ke4 Kc5 Ke5 Kc4 h4 f5 e4+ d3 b4 d5 b6 a5 b7 f3 b5 f2 b6 d4 h5 a4 h6 a3 h7 a2 Rh5 f4 Be3 f3 Na3+ Kc3 Rg5 Kb2 c4 d2 c5 d3 c6 Na6 b8B Bf5 c7 Nf6 c8R Nd5 b7 Bc5 Qe2 Qf8 Ba7 Rb8 Bg2 f1R Nc2 d1Q Bh1 f2 Nf3 d2 Ncd4 Nf6 Ne6 Nb4 Qa6 Ng8 Rd8 Bb6 Bc5 Qe8 Kd6 Nd3 e5 Qda4 Nf8 d1Q e6 Nh6 e7 Be4 Ne5 Rg1 Rc1 a1Q Rb1+ Ka2 Rb3 f1R Rc8 Qf7 e8B Qc3 Bb5 Nc1+ Bd3 Qh5 Bc2 Ka1 Rb5 Rf4 Rc7 Ra8 b8B Qe8 Rb7 Rf3 Ra5 Rh3 Bc7 Rb8 Rb5 Rg8 h8R Qhf3 Nfd7 Rf8 Rg8 Rf4 Nf8 Rfh4 Bb4 Bd4 Rd5 Ng4 Bbc5 Rh7 Rh5 Ra8 Bcb8 Nh6 Kc7 Qf5 Nd3 Qfe6 Rdg5 Qd5 Ne5 Rh8 Kb6 Rh7 Bd6 Rd8 Kc7 Rb8 Rb2 Rb5 Nf3 Ne2 Bh2 Nc1 Ne5 Rb4 Rb3 Rc4 Rb7 Rb4
1BR2q1k/1B3pp1/q2B1B2/1rr1R2b/3K2Rp/3Q1Nb1/1nn1bp1R/4NrR1 w - - 0 1 illegal: No proof kernel
k3N3/r3K2Q/N2n1p2/Q1Nb1rr1/pr6/1R2b3/BQ1Qn2Q/R2rR1qr w - - 0 1 legal: proof: c4 d5 cxd5 b5 g4 h5 a4 hxg4 f4 e6 f5 exf5 axb5 Qd6 b3 Qd8 Ba3 f4 Bc5 Bb7 Bf2 Bc8 Bg3 fxg3 h4 Kd7 e4 c5 Ke2 Kc7 Kd3 Kb7 Kc4 a5 d4 g5 b6 f6 b4 g2 e5 g3 h5 g4 e6 a4 b5 Rh6 d6 Nc6 Kd5 c4 d7 c3 e7 c2 Kd6 c1R d5 Nd4 Nc3 Ra5 Ne4 Ra7 Qb3 Rc2 Nf3 g1R Ne1 g2 Bc4 g3 Nc5+ Kb8 b7 Ne6 Qb2 Ng5 Ned3 Rd1 Nb4 g1R Ba2 Ne4+ Ke6 g2 e8N Rcc1 d6 Rgf1 Rg1 Rf3 Re1 g1R Kf7 Rh8 h6 Ng3 h7 Qb6 d8Q Rc4 d7 Ne7 Qh2 Rg8 h8Q Rf5 Q8h7 Rh1 Qb2 Rgg5 Qbh2 Qc6 Qa5 Qb6 d8Q Bh6 Qb2 Ne2 Qdd2 Rg7+ Kf8 Rg6+ Kf7 Be3 Kf8 Rgg5 Kf7 Ra8 Nba6+ Ka7 b8R Bb7 Kf8 Nc8 Kf7 Nd6+ Ke7 Bc6 Qab4 Bd5 Qa5 Qc6 Rb6 Rd8 Rb7+ Ka8 b6 Rb4 Rc7 Qb5 b7+ Ka7 Rc6 Ra8 Rb6 Qc4 Rb5 Qg4 Rb6 Rbf4 Rb3 Qg1 Qac3 Rfg4 Qe5 Rb4 Qeh2 Kb6 b8Q+ Kc6 Qd8 Ra7+ Nd7 Kb7 Qa5 Bg2 Ndc5+ Ka8+ Ke6 Bb7 Ke7 Bd5+
1Nb1bQqr/5R2/1r3N1r/R3P1K1/3qRBQ1/3Qq2B/1n1b1k2/rbB1r3 w - - 0 1 legal: proof: d4 c5 a4 cxd4 h4 e5 f4 exf4 g3 b5 axb5 g5 Rh3 Na6 Rh2 Nc5 Rh1 Ne4 Nf3 g4 Ng1 Ng5 hxg5 fxg3 Kd2 Ke7 b4 Kd6 e4 Ke5 c4 Kf4 b6 d5 e5 h5 g6 f5 b7 a5 b8B g2 g7 Kg3 c5 a4 c6 a3 c7 a2 b5 h4 b6 f4 b7 f3 Ba6 d3 Ke3 f2 Qe2 f1Q Bb5 d4+ Ke4 d2 Qd1 d3 Ba4 h3 Qb3 d1B Qc2 h2 Qb2 d2 Qc3+ Kf2 Kf4 g3 Qc6 Bh5 Qc4 d1B Ba7+ Qd4+ Kg5 Ne7 b8Q Nf5 g8R Bc2 Nc3 Bb4 Nf3 g1R Bd7 g2 Rf8 Ne3 Qd3 Bb1 Nd5 Nc4 Nf6 Be8 Bh3 Nb2 Rf7 Qe1 Bc5 Ra6 Be7 Qd7 Nd4 Rb6 Nc6 Qe4 Bf8 Qh7 Bh6 Re1 Qa8 Bc3 Nb8 Qd4 Qa3 Ba5 Qf8 Bc3 Rg1 h1R Bf4 Rh2 Rh1 Bd2 Rg1 Bg4 c8Q Bf5 Qcc4 Bc8 Rh1 Qe3 Qe6 g1Q+ Qg4 Qg2 Rg1 Qge4 Rg3 Q3d4 Re3 Qf3 Re4 Qfe3 Ra7 Rhh1 Ra5 Bc2 Rc1 Bb1 Rc7 a1R Rf7 Qg3 Kh5 Bed7 Bg5 Bb4 Bc1 Qge3 Kh4 Bd2 Kh5 Rhg1 Bf1 Be8 Kh4 Rg3 Kh5 Rf3 Kh4 Rf5 Bh3 Rg5 Qh5 Rg6 Bf4 Rh6 Kg5 Bb5 Qd1 Be8 Qg4 Qg8+
6R1/1rk4p/n4b2/rbN2q2/Q1n1B1NQ/1bNpb1P1/Rr1BKR2/3n1Q2 w - - 0 1 legal: proof: b4 a5 h4 g5 a4 gxh4 d4 c5 e4 f5 exf5 b5 axb5 axb4 Ke2 cxd4 Kd2 Bg7 Ke1 Bf8 c4 d5 f4 Kd7 b6 e5 c5 h3 b7 d3 g3 e4 c6+ Kc7 f6 d2+ Kf2 e3+ Ke2 b3 f5 d4 f7 b2 f6 h2 Nf3 Bg7 f8R Qd5 f7 Ne7 Rg8 Qf5 f8N Bf6 Qa4 d1N Bg2 Bd7 Ne5 Ra5 Rg1 h1B Rf1 Na6 Ra2 Nc8 Be4 Nd6 Ng4 Nc4 Nc3 b1R Rf2 Rb2+ Bd2 Be8 Nd7 Bf7 Kd3 e2 Nc5 e1B Ke2 Bd5 Rg6 Rb8 Rg8 Kb6 c7 Bg2 Rf4 Bf2 c8Q Be3 Qf8 Kc7 Rf2 Bc6 Qh6 Bb5 Qh4 Bh1 Bd3 Bd5 Bc2 Rd8 Be4 Rd7 b8Q+ Kc6 Bh1 Rb7 Qf8 Kc7 Bg2 Be4 Bf3 Bc2 Be4 Bb3 Qfh6 Qd5 Qf4+ Qe5 Qf3 Qf4 Qfh1 Qf5 Qf1 d3+
5NB1/1q1b1Q1K/QBb1Rb2/rn1qp3/1r4R1/2N1RN1n/1p3QP1/k1b1bb2 w - - 0 1 illegal: No proof kernel
1NqBb1R1/2KNqp2/2B3rn/2r2nQ1/pp1q3R/1P3RQ1/2k1Np2/1q2Bq2 w - - 0 1 legal: proof: f4 g5 d4 e5 d5 exf4 d6 cxd6 Qd2 d5 Qd1 d4 h4 gxh4 a4 b5 a5 Be7 Be3 Bc5 Bc1 Bb6 axb6 Qf6 Kf2 Qe7 Ke1 Qd8 Kd2 Ke7 Kd3 Kd6 Ke4 Kc5 Ke5 Kc4 Kd6 h5 e4+ d3 g4 a5 g5 b4 b7 a4 e5 f3 e6 h3 g6 f2 e7 h4 e8Q h2 g7 h3 Qe5 Qf6+ Kc7 d5 Nc3 d4 Nce2 d2 Nf3 d3 Bg2 Bd7 Qg5 Qe7 Nfd4 Nh6 g8R Ra5 Bc6 Rc5 Qdg1 d1Q Q1g3 d2 Ra3 Qf1 Rf3 d1Q Bd2 Rh7 Bc3 Rg7 Be1 Qd3 c3 Qde3 b3+ Kd3 c4 Rg6 Nb5 Kc2 Na7 Ra5 c5 Qd4 Bb5 Nc6 b8B Ne5 Nc6 Nc4 Ba7 Ne3 Bb6 Nef5 Nb8 Be8+ Bd7 Rb5 c6 Rd5 Kb7 Re5 c7 Rb5 c8N Rc5 Rg1 h1Q Bd8 h2 Nb6 Qhg2 Rh8 h1Q Rg8 Qef6 Bc6 Qe7+ N6d7 Qgh3 Kc7 Qhh4 Qh5 Qhf6 Qhg5 Qfe6 Rg2 Qec4 Rh2 Qa6 Rh4 Qhg1 Bd2 Qb1 Bc3 Qgf1 Be1 Qc8+
2B1N3/1N1p1nKp/RQr4p/1qP1N1nB/4q3/BR1b2qq/1q3kB1/Bq6 w - - 0 1 legal: proof: e4 c5 h4 a5 d4 cxd4 b4 axb4 h5 f5 h6 gxh6 Bf4 e5 Rh5 b5 Be2 b3 Qd2 Be7 Rh2 Bg5 Qd1 Ra6 Rh1 Rf6 Bd2 Be3 Bc1 f4 Bf1 Rf5 exf5 e4 Ke2 Bd2 Nc3 e3 Kd3 e2 Nb1 Be3 fxe3 Nc6 Kd2 Nb8 g4 Kf7 Kd3 Kf6 Ke4 Kg5 Ke5 e1Q c4 f3 a4 b4 a5 b2 f6 f2 a6 d3 a7 d2 a8B b3 f7 Qa5+ c5 Qa4 f8B Qa7 e4 Qb6 Nf3+ Kg6 g5 Qd8 Rh3 Bb7 Na3 b1Q Nc4 b2 Qb3 d1Q Ra6+ Qb6 Bg7 Qdd2 Na5 Nf6 Bg2 f1Q Qb4 Bc6 Bb7 Bb5 Bc8 Bd3 Nb7 Qb5 Rg3 Kh5 g6 Rg8 Kf5 Qh1 Ne5 Kh4 Qa5 Rf8 Qb6 Nc6 Bh8 Qbc2 g7 b1Q g8B Nd8 Ba3 Nf7 Re3 Qg3 Rf3 Ng5 Bf7 Ne8 Re3 Nd6+ Kf6 Qdf2+ Kg7 Qhh3 Bh5 Rf6 Rf3 Ndf7 Re3 Bf1 Rb3 Rc6 Nd3 Qgf3 e5 Kg3 e6 Qe4 e7 Qcb2+ Ne5+ Bd3 e8N Qff4 Be2 Qfh4 Bh5 Kf2 Kg8 Be2 Nc4 Q2a2 Ba1 Qab2 Ne5 Bd3 Kg7 Q4g3
1RQ5/5Pp1/1R1nNp2/B1pR1N1b/1B3br1/1kN2p1p/1r1RB3/Kq2nr1n w - - 0 1 illegal: No proof kernel
7r/1B2r1pQ/1R1bqb1N/5RBB/2p2nbp/2k1ppP1/4Rp1N/1BK2nN1 w - - 0 1 illegal: No proof kernel
4K2Q/1N2r1b1/1PNb1p2/qR1N1bk1/b3R3/6BB/Q2Nqq2/N1n1n2b w - - 0 1 legal: proof: f4 b5 h4 g5 a4 d5 axb5 e5 c4 exf4 cxd5 Bg4 Ra3 Be6 Ra1 Bc8 b4 gxh4 d4 a5 Ba3 axb4 Qd2 c5 Bc1 c4 Qd1 Ra6 Ba3 Rc6 Bc1 Rc5 dxc5 Kd7 Ba3 Ke7 Bc1 Ke8 Kf2 Ke7 Kf3 Kf6 Ke4 h5 g4 h3 g5+ Kg6 Ke5 h2 e4 f3 c6 h4 d6 h3 d7 f2 c7 f6+ Ke6 b3 e5 c3 b6 c2 Ra5 b2 Qe2 Nc6 Nf3 Nge7 Na3 b1B Rb5 Nf5 Bf4 c1B Bg3 Bf4 Nd2 Nh4 Nc2 Nf3 Na1 Ne1 Bg2 Ba6 c8N f1Q Na7 Nb4 Nc6 Qa8 d8N Rh7 Nb7 Bg7 Ke7 Na2 e6 Nc1 Rg1 Bb8 Ke8 h1Q e7 h2 Bh3 Qhg2 Qe6 h1B Qa2 Kh5 g6+ Qf5 Rf1 Kg5 Rf4 Qe2 Re4 Bc2 Rbb4 Ba4 Rb5 Bh8 g7 Bd6+ Kf7 Qa7 Ke8 Qc5 g8Q+ Bg7 Qh8 Qa8+ Nbd8 Bc8 Nb7 Qa6 Kf7 Qa8 e8N Bf5 Nc7 Qcf2 Nd5 Qa5 Ke8 Bh6 Ndb4 Rd7 Nd5 Bg7 Re7 Rc7 Re4 Re7+
8/N3Qr1N/q1R2Q2/kN1Br1Nn/1r2p1pn/K2r1PB1/4pN1q/R2r3r w - - 0 1 legal: proof: e4 c5 d4 cxd4 b4 f5 g3 fxe4 b5 g6 b6 axb6 Ba3 b5 Bc1 b4 Bg2 b6 Bf1 Bh6 h3 Bf4 gxf4 Ba6 h4 g5 h5 Bc4 Qe2 Bf7 Qd1 Bg6 hxg6 Ra5 Nc3 Ra6 Nb1 Ra8 Kd2 e5 a4 h5 c4 d5 Kc2 Kd7 Kb2 Kc7 a5 g4 f3 d3 f5 h4 f6 h3 g7 h2 a6 e3 a7 d4 c5 d2 f7 d3 f8N b5 c6 Kb6 c7 b3 c8Q e4 Qe1 d1R Ne6 d2 Qf2 b4 Qg3 Qf6+ Qc3 Nd7 Na3 Nf8 Nh3 Ka5 Neg5 Qa6 Bc4 e2 Rg1 h1R Nf2 Ng6 Qh4 Nf6 g8N Nh5 Nf6 Raf8 a8N Rf7 Nfh7 Re8 Qf6 Re6 Nb6 Re5 Qg3 Nh4 Nc8 Qb5 Bd5 Qa6 Kb1 b2 Ka2 b1R Na7 Rb3 N3b5 Rd3 Re1 b3+ Ka3 Qc8 Rg1 Qa6 Bb2 Rb1 Rc1 d1R Bd4 b2+ Rc3 Rf5 Qgd6 Re5 Qde6 Rbc1 Qd6 b1Q Qde7 Qc2 Be3 Rb1 Bf4 Rb4 Bh2 Qd2 Bg3 Qe1 Nfh3 Qg1 Nf2 Rdd4 Rcc1 Qh2 Rc6 R4d3+
3Q4/p1qNp1nB/3rr1RR/3k1B2/nR1b1q1n/n2R3n/1NK1N1Pn/2Q5 w - - 0 1 legal: proof: d4 b5 e4 g5 a4 c5 axb5 cxd4 Ra6 f5 Ra1 fxe4 f4 Bb7 h3 Bd5 f5 Bf7 Be3 Bh5 Bf4 Bg4 hxg4 gxf4 Kd2 Kf7 b4 d5 c4 h5 g5 h4 f6 Ke6 f7 e3+ Kc2 d3+ Kb2 d4 c5 e2 b6 e1N b5 d2 c6 f3 b7 h3 g6 d3 c7 f2 c8B+ Kd5 g7 h2 b6 Rh6 Nh3 Nf3 Bd7 Qc7 Ra6 Nf6 g8Q Bg7 Kb3 Nh5 f8N+ Re6 Qh8 Bd4 Ng1 Nc6 b8R Ng7 b7 Nh4 Qc1 d1N Na3 d2 Kc2 Ne5+ Nc4 Nc3 Nb2 d1N Bd3 f1N Rd8 Nc4 b8R Nf2 Bh7 Na4 Rb4 Nh3 Ne2 Rb8 Rc6 Rb6 Bc8+ Rd6 Bcf5 Ra6 Nd7 Re6 Rg1 h1Q Rcb6 Qhh2 Rh1 Qhf4 Qe8 Re5 Rg6 Ree6 Rh2 Nf2 Rh3 Nh2 Rd3 Rab6 Rc8 Nh3 Qd8 Rbd6 Rh6 Qb8 Rc6 Qc7 Rg3 Ncb6 Rcc3 Nc4 Rgg6 Re5 Rcb3 Ree6 Rd3 Na3+
1rq1N3/3Pq2n/RR2RB1r/5Q1n/B1p2r2/7n/1ppK1kNp/1NQR2r1 w - - 0 1 legal: proof: f4 a5 c4 d5 b4 dxc4 f5 axb4 f6 exf6 g3 f5 Qb3 f4 Kd1 f3 Kc2 f2 Kb2 Ra6 Qd1 Ra7 Kc2 Ra8 Ba3 f5 Qc1 g5 Qe1 f4 Qd1 g4 Bc1 f3 h3 Bd6 Nc3 Be6 Nb1 Bf4 gxf4 g3 Qe1 Nf6 Qd1 Bg4 hxg4 Ng8 d4 Kd7 a4 Kc6 e4 h5 a5 b5 f5 b3+ Kd2 b4 g5 h4 e5 Kd5 a6 Ke4 g6 c5 f6 b2 g7 g2 e6 h3 f7 b3 f8R h2 a7 Nf6 g8Q Qc8 d5 Nh5 d6 Rh6 e7 Nd7 e8N Ndf6 d7 Nh7 Qg5 Rb8 Nh3 g1N Nf4 Nh3 a8R Kd4 Be2 f1Q R1a6 f2 Rb6 Qg2 Rf7 f1R Qf5 Qg5 Raa6 Qe7 Ng2 Rf3 Rff6 Rf4 Na3 b1R Rfe6 Ra1 Nb1 b2 Rg1 Re4 Qc2 Rf4 Bd1 c3+ Ke2 Rf3 Bg5 c4 Qc1 Rf4 Ba4 c2 Kd2 Ra3 Rd1 Rg3 Ne3 Rg1 Bh4 Qd6 Bf6+ Qe5 Qg4 Ke4 Qg6+ Kf3 Ng2 Kf2 Qe4 Qec5 Qf5 Qe7
r5Q1/2N2R1r/1k2n2n/N3q3/1n1nr3/2pR1bRP/RNn1nKB1/r1b1B2Q w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 exf4 Nc3 d5 Nb1 dxc4 e4 Kd7 d4 a5 b4 c5 d5 Kc7 d6+ Kb6 e5 f5 d7 g5 e6 a4 h3 f3 e7 c3 e8Q a3 Qa4 f2+ Ke2 c4 Qe4 f4 Qd1 c2 Bd2 g3 Qe5 c1N+ Kf3 a2 Qa4 g4+ Kg2 c3 Be1 Na6 Nd2 Nh6 Qe8 Qg5 d8R Nc5 Rd3 Ne6 Ne2 Qe5 Nb3 Rh7 Rg1 Bc5 Na5 Be3 Qb3 Bb7+ Qd5 Nb3 Qf3 Nbd4 Qg8 Nc2 Nc1 Bc6 Rb1 a1N Rb2 Ncd4 Ra2 Nac2 Rd1 Bd5 Nd3 Bc1 Nb2 Nc6 Rd3 N2d4 Be2 f1R Qe4 Rf3 Bf1 Re3 Qf3 Re4 Qd1 Ka7 b6+ Ka6 b7 Kb6 b5 Nb4 b8N f3+ Kh1 f2 Kg2 Bc6 Na6 Bd5 Nc7 Bc6 Be2 f1N Bf3 Bd5 Kh1 Ne3 Bg2 Nec2 Rf1 Bc4 Kg1 Bd5 Rf7 Bc6 Bh1 g2 Kf2 g1N Bg2 Nge2 Rg3 Kc5 b6 Bd5 b7 Kb6 Bd2 Bc6 Qh1 Bd5 Be1 Bc6 Rd3 g3+ Kf1 Bd5 b8R+ Bb7 Rbf8 Bd5 Rg7 Bc6 Rff7 Bd5 Bf3 g2+ Kf2 g1R Rg5 Reg4 Bg2 Bf3 Rg6 Re4 Rg3 Bf4 Bd2 Ra1 Be1 Bc1
2R1q1BK/2b1Q1n1/n1b3p1/Nrb1r1P1/Q1N5/1q3b1r/2p1R1q1/1B1Q1BkB w - - 0 1 legal: proof: f4 a5 g4 d5 c4 dxc4 b4 axb4 Bb2 e5 fxe5 h5 Bd4 h4 Bf2 Ra4 Bg3 hxg3 Qc1 Ra6 Qd1 Ra8 h4 Ke7 d4 Ke6 Kd2 Kd5 Ke3 b5 Kf4 c5 a4 f5 h5 c3 g5 b3 a5 c4 a6 b2 a7 g2 e6 b4 h6 c2 e7 c1R e8B c3 h7 b3 Ra2 Nf6 Nd2 b1B Nc4 b2 Nf3 g1B Nfe5 Bd6 Na5 Bc7 Bg6 Bd7 e3 Re8 h8Q Bc6 Qh4 Na6 Bf7+ Re6 Bg8 Rb8 a8B Rb5 Bb7 Qe8 e4+ Kd6 d5 Kc5 d6 g6 Nec4 Re5 d7 Bc2 d8Q b1Q Rh2 Qb3 Re2 Bb1 Rac2 Nh5+ Kf3 Ng7 Kf4 Ba2 Bc8 Rb1 Rc1 Rb2 Bce6 Rd2 Qe7+ Kd4 Rc2 Rd3 Bd5 Re6+ e5 Bf2 Bh1 Bg1 Qa1 Rh3 Qhe1 Bb1 Qa4 Bf3 Rc1 Bbe4 Rcc2 Bc6 Qc1 Rd6 e6 Kd3 Qca1 Bc5 Ke5 f4 Kf6 Rd5 Qe1 Re5 Rc1 Bg4 Be4+ Kd4 Bb1 f3 Rcc2 f2 Qd1+ Rd3 Qf8 Bgf3 e7 Qb8 e8B Qa8 Ra2 c2 Qe7 Qd8 Bef7 Qd7 Bd5 Qe8 Bg2 f1Q Ra1 Qg1 Bf1 Bg4 Bdg2 Bgf3 Bh1 Qg2 Ra3 Qb4 Rc3 Qb3 Rd2 Ke4 Re2+ Re3 Rd3 Kf4 Rd8 Kg3 Ra8 Kh2 Rc8 Kg1 Be6 Nf5 Bg8 Nh4 Kg7 Nf5+ Kh8 Ng7 Qf8 Bh5 Qfd6 Rh3 Qe7 Bhf3+
3k1Bnq/2nrb1Q1/1n4K1/qQ1b2pr/1Q4n1/NQp1R2P/B1RB4/N2b1b2 w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 exf4 Nc3 d5 Nb1 dxc4 Kf2 g5 e4 c5 d4 a5 b4 f5 b6 f3 Kg3 c3 b5 c4 e5 a4 h3 a3 d5 f2 d6 c2 b7 c3 e6 a2 e7 Be6 b6 Nd7 b8B Rh5 b7 Bd5 Ne2 Ra7 Bd2 c1N Qb3 Nb6 Rh2 Nd3 Nc1 Ne5 Bc4 f1B Na3 Be2 Rb1 a1Q d7+ Kf7 Bd6 Bd1 b8Q f4+ Kf2 f3 Kg3 f2 e8Q+ Kf6 Qb4 f1B Ba2 Rc7 Nb3 Be7 Qf8+ Ke6 Qg7 Qf8 d8Q Rd7 Qe8 Qf6 Qh7 Qh8 Re2 Kf6 Rb2 Ke6 Rc2 Kf6 Kf2 g3+ Ke3 g2 Qg7+ Ke6 Qb7 g1N Qeb8 Ngf3 Qa6 Nc8 Qab5 Nb6 Qb7 Nd4 Bc5 Qb2 Na1 Qb3 Re1 Qa4 Bd6 Qa5 Re2 Bb3 Ke4 Ng4 Re3 Bbc4 Qh6+ Kf7 Qg7+ Ke8 Bc5 Ne6 Kf5 Bd5 Kg6 Kd8 Qb3 Bf6 Bf8 Be7 Q5b4 Nc7 Qc6 Na4 Qcb5 Nb6
1r2Br2/r5b1/1qR2NRp/2b2Nr1/R2bbQ2/7Q/2p2PqR/n1K1BNkn w - - 0 1 legal: proof: e4 b5 c4 f5 h4 fxe4 a4 d5 axb5 dxc4 Ne2 g5 Ng1 gxh4 d4 Kd7 Kd2 Kd6 b4 Kd5 g4 e5 g5 a5 b6 c5 b5 e3+ Kc2 Ke4 b7 h3 d5 e2 g6 e1B b6 a4 d6 h6 g7 c3 d7 c4 Ra3 h2 Qd2 Ra7 Rb3 a3 Bh3 a2 Rb5 a1B Ne2 Kf3 Bf1 e4 Qd1 e3 Bh3 Nc6 b8R Na5 b7 Ne7 g8N Nb3 Bf1 Qb6 d8R Nf5 Qd4 Bc5 Rg1 h1Q Rd7 Qg2 Bd2 Ng3 Rd6 Nh1 Ng3 e2 Nf6 Rf8 Ra8 Be6 b8Q Bd5 Nf5 Bb7 Ne3 Be4+ Qd3 Bd4 Rh5 Bb2 Na3 Na1+ Kb1 Bc5 Rh2 Bd4 Rc6 c2+ Ka2 c1R Nf5+ Be3 Ba5 c3 Nc4 c2 Qd7 Bed4 Nce3 Bd2 Qbd6 e1R Bb5 Rb8 Nf1 B2e3 Ba4 Rb1 Qf4+ Ke2 Bb4 Rf8 Qc8 Red1 Be1 Bc5 Qd7 Rd5 Qe6 Re5 Qb3 Bed4 Qh3 Qf3 Rg6 Qg2 Nd6 Rg5 Nf5 Re7 Rd6 Rh7 Be8 Rc7 Ra4 Ra7 Nd5 Bg7 Rc6 Bbd4 Nf6 Qd8 Bc3 Rb8 Bb4 Qb6 Ka3 Be3 Kb2 Bed4+ Kc1 Rc8 N1e3 Rca8 Be1 Rb8 Neg4 Kf1 Nge3+ Kg1 Nf1 Ba3+ Kd2 Bd6 Kc1 B6c5
R1bk1qQ1/2ppnn1B/rb3qb1/2KNN1R1/6Np/2Pb2Bb/1b1N4/6BQ w - - 0 1 legal: proof: d4 e5 b4 exd4 g4 a5 Bb2 axb4 Bc1 f5 h4 g5 Na3 b5 Nb1 Ra6 Bf4 Rg6 Bd2 fxg4 Bc1 g3 Kd2 g4 Ke1 Rg5 hxg5 Qf6 Bg2 Qe7 Bf1 Qd8 Kd2 h5 Kd3 b3 f4 b4 Kc4 b2 a4 d3 e4 h4 g6 d2 g7 g2 c3 b3 e5 g3 f5 Rh7 f6 Na6 a5 Rh6 e6 Bb4 e7 Ba3 Bd3 Nc5 a6 Ne4 a7 Ng5 Nf3 g1Q a8N g2 Nb6 Qf2 Nd5 g1B Bh7 Qb6 Qe1 d1B Be3 Qd6 Ba7 Bb6 Nbd2 b1B Rg1 b2 Rg3 Bf5 Qh1 b1B Kb5 Bb2 Rg2 Nf7 Rg5 Bdc2 Ra6 Ba5 Bg1 Qa3 Ra8 Bh3 Kc4 Nd6+ Kd4 Kf7 e8N Ke6 f7 Qe7 f8B Nf7 Nc4 Rf6 Ncd2 Bg6 Kc4 Bbd3+ Kd4 Qd8 Bd6 Qe7 Be5 Qd8 Beh2 Qf8 Ne5 Qde7 Bg3 Qd8 Nf4+ Ke7 Kc5 Re6 Nf6 Ra6 Nfg4 Ke8+ Kd4 Qf6 Nd5 Ne7 g8Q Kd8 Kc5 Bb6+
8/q2nQ2b/B1pR1b1r/R1n1p2r/1BNpp2N/1rB4k/B3P1n1/3Q1QKr w - - 0 1 illegal: No proof kernel
4BN2/2np3R/1NN1r3/p1pr1pRK/P5n1/1pbq3k/nQBN3r/1Q1bQ3 w - - 0 1 illegal: No proof kernel
K6r/p2pr1p1/Nq1k2N1/1bppNq2/3bB3/BnR2R2/P3QQ2/n1qQ2N1 w - - 0 1 legal: proof: e4 f5 exf5 h5 c4 Rh7 g4 hxg4 d4 Rh4 c5 Rh8 c6 bxc6 d5 cxd5 Kd2 e5 Kc3 Ke7 Kb4 c5+ Kb5 g3 f4 g2 b4 e4 h4 e3 h5 e2 f6+ Kd6 f5 e1Q f7 Qde8 h6 Qh4 h7 Qd4 f6 Ke6 Ba3 Qd2 Bd3 Qe7 Be4 Qf4 Nd2 Qe8 Rc1 Qe7 Ndf3 Na6 Rh3 Nh6 Ne5 Qf5 Rcc3 Qd8 Rhf3 Be7 f8Q Kd6 f7 Bb7 Qe8 Bf6 f8N Rb8 Nfg6 Qb6+ Ka4 Ba8 b5 Bc6 Qf7 Rhe8 h8Q Re7 Qhe8 Nb4 Qff8 Nc2 Qff7 Qb7 Ka5 Na1 b6 Bb5 Qff8 Qc6 b7 Rd8 b8N Qb7 Ne2 g1Q Na6 Qe3 Ng1 Qc1 Nc6 Bd4 Nce5 Qg4 Qf4 Nf5 Qh2 Qh3 Qf7 Rh8 Qhe2 Ne3 Qf4 Nf1 Qh4 Qf5 Qhf2 Ba4 Nb4 Qc7+ Ka6 Qa5+ Kb7 Bb5 Na6 Nd2 Rce3 Ndb3 Rc3 Rh7 Kb8 Qb6+ Ka8 Rh8+
nNB1n1N1/4Kn1q/2N1rr2/1R1pR3/q1N2P2/bqkp1r2/2N3Q1/2B2bNq w - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 Nd2 g5 Nb1 gxh4 Ke2 Kf7 g4 Ke6 b4 Ke5 c4 h5 g5 a5 c5 d5 b6 a4 g6 a3 g7 a2 b5 e3 Kf3 h3 b7 d3 b6 Kd4 Kf4 e5+ Kf3 e2 c6 e1N+ Kg3 e4 Kf4 e3 c7 e2 f3 h2 Nh3 h4 Ng1 h3 Nc3 Ra6 Rb1 a1Q Rb3 Qa4 Rb2 Nd7 Kf5 Ba3 Ke6 Ngf6 g8N Ne8 b8N Rh6+ Kf7 Rd6 b7 Nb6 f4 Na8 Qb3 Nf3 Nb1 e1R Qc2 Re3 Rb5 Ng5+ Kf8 Bf5 c8N Rf3 Qg2 Qb6 Ke7 Nf7 Nc6+ Kc4 b8N Be4 Nd2+ Kc3 Nd4 Bf5 Na7 Be6 Rb1 Qbb3 Nac6 Bd7 Nc2 Rf6+ N6b4 Rad6 Nc4 Bg4 Rb2 Rg3 Qe2 Qa2 N4c6 Bh5 Rb6 Q2b3 Rb5 Bf3 Qe4 Bg2 Qg6 Rf3 Be2 Rf2 Bg4 Rf1 Nf3 Rf2 Rd1 Bf1 Ng1 Rf3 Rb7 h1Q Re1 h2 Re3 Qg2 Bc8 h1Q Rb5 Qgh3 Re5 Qh7 Qg2 Rde6+
1r1kN2q/q2b1Bn1/p3R2R/nqBr1q2/BB6/n2r1NrK/PQ3qN1/1N6 w - - 0 1 legal: proof: e4 d5 c4 dxe4 g4 f5 Nf3 b5 Ng1 bxc4 h4 g5 Qb3 Bh6 Qf3 fxg4 Qd1 g3 Ne2 g4 Ng1 Bg5 hxg5 Bb7 Be2 Ba6 Bf1 Bc8 b4 c5 d4 e5 f4 h5 d5 g2 Kf2 h4 g6 h3 Kg3 a6 g7 h2 f5 e3 b5 e4 f6 e2 d6 e1Q+ Kf4 e3 b6 e2 b7 c3 Nf3 g1Q Qa4+ Bd7 Qe4+ Ne7 g8B c2 Bh3 g3 Ne5 c4 Kf3 g2 Ba3 c1Q Bd5 c3 Nc6 c2 Qd4 Qb6 Bc5 Rh5 Ne5 Qb5 f7+ Kd8 f8B Nbc6 b8N Qg5 Bf7 c1R Qb2 Rd1 Bg4 Qed2 Kg3 e1N Nf3 Qf5 Bb4 Rg5 Kh3 Qa7 Bc5 g1R Bb4 Be8 Nd7 Nc2 Nf6 Bd7 Ne8 Rb8 Bc5 Qf2 Bb4 Bc8 d7 Na3 Bc5 Rg2 Re1 Rd5 Re6 Na5 Bb4 Rd3 Rh6 Ng6 Bfc5 Nf8 Re6 Qg6 Bf5 R2g4 Be4 Re5 Bc6 Qf5 Rh6 Red5 Re6 Qbb7 Rh6 Ne6 Ba4 Ng7 Re6 Rd6 Rh6 R3d5 Re6 Qb5 Rh6 Ke7 d8N Bd7 Ne6 Rd3 Nf4 Kd8 Ng2 R6d5 Nc3 Qg1 Re1 Qf2 Re3 h1Q+ Nh2 Qc1 Nb1 Qc3 Nf3 Qd4 Ree6 Qdf6 Bh5 Qf8 Bg6 Qh8 Bf7 Rg3+
4R3/1r4B1/np1B2R1/1B2P2N/Qbb2n2/1n1NbBpp/2rqNp1k/q1NK4 w - - 0 1 illegal: No proof kernel
2n2BB1/b2nnP2/n7/2B2N2/K1B4B/r5Rq/1kb3NN/qqq1QBrb w - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Kd2 Kf7 c4 Kf6 Kc2 Ke5 Kb3 a5 g4 d5 g5 h5 f3 d3 b6 Kd4 f6 e5 g6 e4 c5 e3 g7 h3 f7 e2 f4 e1N b7 a4+ Kb4 h4 f5 a3 b3 a2 f6 h2 Na3 d2 Rb1 a1Q Qe2 d1N Bg5 h3 Bh4 Na6+ Ka4 Kc3 b8N d4 c6 d3 b4 d2 b5 Nd3 c7 Bf5 c8B Qb6 Nc6 Ne3 Qe1 Ne5 Ne7 Nd7 Nf3 Rb8 Rg1 h1Q Rg3 Nc4 Nh2+ Bd3 Rb2 Nd6 Nf5 Ne7 Ra2 Rg8 Nc4 Qc5 Bb7 Ndc8 b6 Qcg1 Nce3 Bc2+ Kb5 Qhg2 Ra3+ Kb2 Bd5 d1Q b7 Qdb1 Bdc4 Qf3 Ng2 Qc1 Ng4 h2 Ka5 h1B Nh2 Qg4 Kb5 Qh3 Ka5 Ra8 b8B Ra7 Bc7 Rb7 Bd6 Rb3 Ka4 Qcb1 Bc5 Qe3 Bb6 Qec1 Bg1 Nd5 Be3 Bc5 f8B Ba7 f7 Nde7 Bg1 Rh8 g8B Rh7 Nf4 Rg7 Bc5 Rg6 Re3 Rg2 Rg3 Rg1 Ng2 Rxa3+
1b2n2K/RN1p4/1N1n2b1/1R1qR3/r2rPn1R/Qn1BR3/3n1bkN/2b2N2 w - - 0 1 legal: proof: d4 c5 f4 cxd4 a4 b5 axb5 e5 Ra6 exf4 Ra5 Qb6 Ra1 Qd8 g4 f5 Bd2 h6 gxf5 Qb6 Ba5 Qf6 Bd8 Qb6 Bf6 Qd8 Bg5 hxg5 Kf2 Ke7 Kf3 Kf6 Kg4 Ke5 c4 Ke4 h4 a5 b4 d3 e3 d2 f6 f3 c5 a4 c6 f2 f7 a3 c7 a2 b6 Na6 b5 Ne7 h5 Nd5 h6 Bd6 Kh5 g4 Kg6 g3 f8N g2 h7 Nf4+ Kf7 g5 Kg7 g4 b7 g3 b8R Bb7 c8N Nc7 b6 Ra4 Nf3 g1B Nh2 g2 Bc4 f1N Qc1 d1N Qa3 Nc3 Ne6 Nd2 Ra8 Qh4 Ra7 Bf2 Nd8 Qh5 Re1 g1B Ra5 Rf8 h8R Qd5 Rh4 N3b5 Be2 Ba8 b7 Ne8+ Kh7 Bb8 Nb6 Rf7+ Kh8 Nbd6 Bc4 Rg7 Re2 Rg4 Rb5 Bc7 b8R Bc6 Ra8 Bb8 Raa5 Bb7 Re1 Ba6 Be2 Rd4 Nb7 Ra4 Rb2 Bd3 Rbb5 Bc2 Nf1 Bh2 Bd3+ Kf3 Re2 Bhg3 Nh2+ Kg2 Re1 Qf3 Re5 Qd5 Rb5 Rd4 Bc4 Bg6 Bd3 Nh3 Re2 Bf4 Re1 Ra4 Re2 Bg5 Re1 Rgd4 e4 Nf4 Re3 N2c4 Nd2 Bh6 Rd1 a1N Ndf1 Nd2 Rdb1 Bg5 Ra5 Bh6 Rbb5 Nab3 Ra7 Nf3 Rh3 Nh5 Re1 Bc1 Rh4 Nfd2 Re3 Nf4
nr2BK2/Q1NBb1R1/4pkb1/1R4R1/R1rq1rQ1/1n1r1Q2/3qqP1q/3Q4 w - - 0 1 legal: proof: g4 b5 a4 d5 axb5 f5 c4 g5 cxd5 h6 h4 Be6 e4 fxe4 b3 Bc8 Bb2 Nf6 Be5 Ng8 Bg3 Bb7 h5 Ba6 Bh4 Bc8 Nc3 gxh4 g5 Nc6 g6 Bf5 Na4 Bd7 Nc5 Nb8 Ne6 Bc8 Ng5 hxg5 Ke2 a5 Ke3 c5 d4 a4 b6 c4 b7 h3 h6 e6 h7 Ke7 g7 a3 b4 h2 b5 a2 d6+ Kf6 b6 c3 d5 g4 Kf4 e3 d7 g3 d6 c2 Nh3 c1R Qf3 e2 Rg1 e1Q Bb5 Nc6 b8Q h1Q b7 g2 Qa7 Nd4 b8R Qda5 d8R Ne7 g8B Nb3 d7 Ba6 Bf7 Qe2 Be8 Nc8 Rb6 Rg8 h8Q+ Rg7 Rb7 Rb8 Qg8 Rf7 Qgg4 Nb6 Rc8 Be7 d8Q Rc2 Rcc7 Na8 Bbd7 Bd3 Rb5 Bg6 Rcc5 Rf8 Rg5 Rc5 Qc8 Rd5 Qc1 Bd8 Qd1 Rc5 Rc1 a1Q Rc4 Rd5 Ra4 Rd3 Rgc5 Ke7+ Kg5 Qd4 Kh6 Qad2+ Rg5 Rf6 Kg7 Rf4+ Kg8 Kf6 Kf8 Qh2 Rb7 Rf5 Nf4 Rc5 Rb5 Rc4 Rf1 g1R Re1 Rg2 Rh1 Qg1 Rh7 Qh2 Rg7 Rg3 Qc6 Rge3 Qcf3 Re4 Ng2+ Rf4 Ne3 Bf5 Nd5+ Ke5 Nc7+ Kf6 Qe3 Bg6 Qef3 Be7+
2b1bkN1/2RRp3/2BnPpR1/6N1/3K2bB/bb2r3/q1rN1nnR/rN4N1 w - - 0 1 legal: proof: f4 b5 g4 g5 d4 c5 a4 cxd4 axb5 gxf4 g5 h5 Qd3 Ba6 Qf5 Bc8 Qg4 hxg4 Kf2 d5 b4 a5 h4 d3 c4 f6 e4 f3 Ke3 g3 e5 d2 e6 d1B h5 a4 h6 a3 g6 f2 g7 g2 b6 d4+ Ke4 d3 h7 a2 b5 d2 c5 Nd7 c6 Bb3 b7 d1B b8R Ra3 b6 Nh6 g8N Ng4 b7 Nde5 c7 Bh6 Bb5+ Kf8 Rh2 f1B Bg5 Ne3 Bc6 Qd2 Bh4 Nf7 Ra8 Qe2 b8R Nd6+ Kd4 Qf2 Ra7 Bg4 Rbb7 Bb5 Bd5 Be8 Bc6 Bcd7 c8N Qc2 Nb6 Bc8 Nf3 g1N Rc7 Ng2 Nc4 Bc1 Ncd2 Nh3 Ng1 Nf2 Rd7 Ra6 Rac7 Ra3 Nh6 Rg8 h8N Rg5 N8f7 Rc5 Ng8 Rc3 Ne4 Qe2 Ned2 Rc2 Ng5 Bb2+ Nc3 Qa6 Rd1 a1R Re1 Qf1 Re3 Qb1 Rd3 Bc1 Rg3 Qa2 Ncb1 Ba4 Nde4 Re3 Ned2 Bb3 Nf7 Bh5 Rg6 Bg4 Ng5 Ba3
2Bq2n1/1NB5/3r4/N4rQ1/B2kb2K/b1qB2nN/B1bPrq1b/2B1b1Q1 w - - 0 1 legal: proof: c4 b5 a4 d6 axb5 d5 f4 dxc4 b4 e5 fxe5 g6 Ra3 g5 h4 Bg7 g4 Bf8 Rf3 h6 Rf4 gxf4 g5 h5 Rh2 Qf6 Rg2 Qd8 Rg4 hxg4 Kf2 Kd7 e4 Ke6 g6 c5 h5 a5 b6 f5 b7 a4 b5 g3+ Kg2 f3+ Kh3 a3 b6 g2 g7 f4 h6 c3 h7 c4 Qb3 c2 Nc3 a2 Qb4 a1B Bb2 c1R Be2 f2 Nb5 f1Q Qa4 c3 Qd4 f3 Nd6 c2 Bd3 Re1 Bc1 Nd7 b8B f2 b7 Re2 Bc7 Ra5 b8N Nc5 Nc6 Bb7 Qe3 Ra6 Qg5 Bd4 Na5 Qe1 Kg4 f1B Nh3 g1B Kh5 Ba8 Ndb7 Bh2 Qg1 Rd6 Kg4 Ke7 e6 Kf6 e7 Ke5 e8B Bf2 Bd7 Kd4 e5 Ne4 e6 Ng3 e7 Bg2 e8B Be4 Bc8 Qf1 Qh1 Be1 Qg1+ Qf2 Ba4 Bg6 Nc5 Bae4 Ncb7 Rf6 Kg5 Ba3 Kh4 Rf5+ Kg4 Nf6+ Kh4 Re8 g8B Re6 h8Q Rd6 Qh5 Bh7 Ba2 Ng8+ Ng5 Bc5 Ba3 c1Q Qg6 Qc3 Bc1 Ba3 Qh5 Rff6 Nh3 Rf3+ Qg5 Bhg6 Bdb5 Bc2 Bbc4 Bge4 Bd3 Rf5
3Rb3/1Bn2RQ1/3n1b1p/1bB3rB/n2Prk1B/3B2b1/1BBK2pb/5q1B w - - 0 1 illegal: No proof kernel
k1q5/n2P1n1b/NRr1B3/5p1N/Pn1qBR1b/BQr2Np1/1n6/K4bqR w - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 c4 axb4 f5 d5 cxd5 e6 Na3 exf5 Nb1 f4 d4 Kd7 Kd2 c5 Kc2 Kc7 Kb2 b5 a4 Kb7 e4 g5 h4 b3 d6 b4 h5 c4 e5 f3 d5 f2 h6 Ra6 d7 Nc6 d6 Be7 e6 Ka8 h7 Nh6 Qc2 Na7 Nd2 c3+ Kb1 b2 Ka2 b1N Ba3 Rc6 Nb3 Nd2 Rb1 Qf8 d8R Nc4 Nd2 b3+ Ka1 b2+ Ka2 f5 Qb3 c2 Bd3 f1B Qb6 c1Q Re8 Qc3 Nb3 Qd4 Nc5 Bd8 e7 Be6 d7 Bg8 Na6 Nf7 Re1 b1N Qb5 Qe4 Ka1 Nc3 Rb1 Na2 Qd5 Qe3 Rb6 Nb2 Qb3 Nb4 Bb1 Rc3 Nf3 Qd4 Bd3 g3 Bc2 g2 Bb1 Ne5 Bc2 Bgc4 Bd3 Rg8 h8N g1Q Ng6 g4 Nf4 g3 Nh5 Rg6 Bb1 Qh8 Rg8 Rd6 e8B Rc6 Rg4 Bh4 Rf4 Bg8 Be4 Bh7 Bf7 Qc8 Be6 Nf7
1bNb1K1n/2B2Q1q/qR2p3/bR2b2R/1P2b1b1/1P1NBBk1/2b2n2/1q2Q3 w - - 0 1 legal: proof: e4 h5 a4 f5 h4 fxe4 d4 a5 b3 c5 Qe2 g5 Qd1 gxh4 Ra2 b5 Ra1 bxa4 c3 c4 Nf3 Ra6 Ng1 Rb6 Nf3 Rb7 Ng1 Rb4 cxb4 Rh6 Qd3 Rc6 Qd1 Rc5 dxc5 Qb6 Ra2 Qc7 Ra1 Qd8 Kd2 Kf7 Kc3 Kf6 Kd4 Kf5 Kd5 e3 f4 c3 g3 c2 c6 h3 c7 e2 Nc3 Kg4 f5 a3 f6 h2 f7 h4 Ne4 a2 Nc5 h3 Rb1 a1B Bh6 c1Q Rb2 a4 Ne6 a3 Be3 a2 Rd2 Bd4 Bh6 a1B Qc2 e1B Ba6 Qb1 Ne2 Bb6 N6f4 Ba5 Qc3 Nc6 Nd3 Ne5 Bb7 Ng6 Be3 Nh6 Nef4 Nh8 Ng6 d6 Kc6 d5 Qc1 Bf2 Qe1 d4 Rd1 Bf5 c8R e6 Rb8 Bd6 f8B Qb6+ Kd7 Qa6 Ke8 Bdc7 Rd2 Bd8 Bd6 Bg1 Ne7 Bh7 Nb2 Bc2 Kf8 d3 Nc8 Bf2 Re2 d2 Nd3 d1B Bc7 Be5 Bg2 Bg1 Rf2 Be2 Rf5 Bed1 Rh5 Bf2 Rg1 h1B Rb6 h2 Rf1 Bg1 Rff5 Be2 Bc6 Be4 Rfg5+ Kf3 g4 h1Q Rf5+ Kg2 g5 Bg4 g6 Bgh2 g7 Bhf4 g8Q Qh4 Nf2 Kg3 Qf7 Qh1 Rhg5 Qh5 Bb7 Qg6 Rh5 Qh7 Bd5 Bh3 Bb7 Ng4 Nd3+ Nf2 Rfg5+ Bg4 Ba8 Bg6 Bf3 Be4 Rf5 Bd4 Rfb5 Bfe5 Rd6 Ba7 Rdb6 Bb8
2qnkqr1/1Bn1Bn2/2n1P3/2p1PRN1/5QNn/1rr1N1BK/1qQ2r1R/8 w - - 0 1 legal: proof: h4 a5 b4 axb4 d4 e5 h5 exd4 h6 b3 c3 gxh6 Nd2 h5 Nb1 h4 e3 b5 e4 b2 f3 Bb7 e5 Be4 fxe4 b4 Bd2 b3 Bc1 Bb4 cxb4 Qf6 Na3 Qg5 Nb1 Qd8 Kf2 c5 a4 f5 g4 d5 Kg2 h5 e6 d3 a5 d4 b5 h3+ Kh2 f4 b6 f3 a6 f2 e5 d2 a7 d3 g5 h4 b7 Nc6 b8B Qc8 g6 Nd8 g7 Nh6 g8N Nhf7 Bg2 f1R Bb7 Rf2+ Bg2 Rh6 Qe2 d1N Nf3 d2 Ra4 Ne3 Ra2 d1N Qa6 Nf5 Qc4 Nd4 Bg5 Ne3 Bf4 Nd5 Bg5 Nc7 Rf1 N4c6 Nbd2 b1Q Qf4 b2 Nc4 Qa1 Ne3 b1R Be7 Rb3 Ng5 Qb2 Bf6 Rh8 Nh6 Rg8 Nhg4 Rc3 Kh1 h2 Bd5 Nb5 Bd6 Rb8 a8Q Nc7 Qaa4 Rb5 Qc2 Rbb3 Ne4 Rf3 Kg2 h1N Ng5 h3+ Kh2 Ng3 Bde7 Nf5 Be4 Nh4 Rf2 Na5 Bb7 Nac6 Rf1 Rf2+ Kg3 h2 Kh3 Re2 Rf2 h1Q+ Rh2 Na7 Ra1 Nac6 Rf1 Qf3+ Qg3 Qf5 Ne4 Nf3 Bh4 Nh6 Ng5 Qf8 Qf2 Nhf7 Bg3 Nh4 Qff5 Nb5 Qfe4 Rd2 Rf5 Nc7 Qf4 Rf2
1bn2N1n/Q1B1PB2/qq2b3/1k2K1b1/R4B1r/Qpp1N3/P1q2rp1/Q2R4 w - - 0 1 legal: proof: c4 d5 cxd5 e5 b4 a5 f4 axb4 h4 exf4 g3 g5 Rh3 g4 Rh1 Qg5 hxg5 fxg3 e4 Kd7 Ke2 f5 Kd3 c5 g6 b5 e5 h5 d6 Kc6 e6 b3 d7 b2 d8Q g2 g7 h4 e7 h3 Na3 b1Q+ Kc3 g3 d4 b4+ Kc4 b3 Bb2 f4 Bc1 h2 Bd2 f3 Qc1 f2 Qa5 Nd7 Nf3 g1B Qa7 g2 Bf4 Nh6 g8Q Nf7 Nc2 Bh6 Qca3 Bg5 Qg7 Rh4 Ne3 Nb6+ Kc3 c4 d5+ Kb5 Kd4 Bh3 d6 Rf8 d7 Qc2 d8B Be6 Rd1 Nc8 Bc7 Nh8 Ke5 Rf6 Bd3 f1Q Bg6 Bf2 Rd4 Bg3 Bf7 Qfe2 Rhd1 h1Q Re4 Qhe1 Red4 Qa5 Re4 Qb6 Red4 Rh2 Nh4 Rh3 Ng6 Rh4 Nf8 c3 Ra4 Qc4 Qg6 Qcc6 Qe4 Qcb7 Qd4 Q7a6 Qd2 Bh2 Qdc1 Bg3 Qa1 Bh2 Bg3 Rf2 Bf4 Bg4 Bd6 Qbb7 Kd4 Bh6 Bg5 Qbb6+ Kd5 Be5 Bf4 Bh3 Bc7 Bf5 Bd8 Bb8 Bdc7 Bg5 Ke5 Be6
1n1r2B1/2PrQ1rQ/n3N2B/7B/p3Rq1n/NR1P1p2/6p1/nN1K1knb w - - 0 1 legal: proof: b4 b5 f4 c5 a4 h5 c4 e5 g4 exf4 Nf3 hxg4 Ng1 d5 axb5 dxc4 Qc2 c3 Qa4 c4 Qd1 Bc5 bxc5 Qc7 Bh3 Qd7 Bf1 Qd8 h4 Kd7 e4 Ke6 e5 Kf5 d3 a5 h5 g5 b6 c2 h6 g3 c6 g2 c7 g4 h7 f3 e6 g3 e7 Kg4 e8B f5 b7 f4 Bg6 a4 Qd2 f2+ Ke2 c3 Qe1 Qd6 Bf7 Nh6 Ba3 c1N+ Kd1 c2+ Kd2 Na2 Qe4 c1N Kd1 Rd8 h8Q Nf5 Bg8 Nh4 Nf3 g1N Qhh7 Nb3 Be2 Rd7 Bc1 Nb4 Qee7 N4a6 Ra3 Na1 Rb3 f1R+ Ne1+ Rf3 Rh2 Qf6 Rg2 Kh3 Nc2 Re3 Bh5 f3 Qe8 Qf4 Re2 Ree7 Re4 Kg2 Nca3 Rg7 Qe7 Kf1 Bd2 Rd4 Bc1 Bh3 Bd2 Rd7 Be3 Nc6 b8N Bg2 Bd2 Bh1 Be3 Ne5 Nc6 g2 Nd8 Nc6 Ne6 Rad8 Bd2 Ncb8 Be3 Qf5 Bh6 Qf4
K3R2Q/3prp2/Rr1bQ2P/1Q6/Nnr2PRp/q1B1p1B1/1n1N4/b4n1k w - - 0 1 illegal: No proof kernel
Nk2KQ2/q2nQP1b/1n1qP1Rr/2qr4/2NBN1Rb/3Bn3/b1brR3/2b5 w - - 0 1 illegal: No proof kernel
1r2rb1r/bkPQ3q/n3KQ2/q3B1QP/1q5N/3R1R2/1qR1B1p1/Nnnb4 w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 Kf2 f5 h4 g5 b4 a5 e4 d5 c4 Kd7 c5 Kc7 b6+ Kb7 h5 a4 e5 g3+ Kf3 g2 b5 g4+ Ke2 f3+ Kd3 f2 e6 f4 e7 a3 e8Q g3 Qee1 a2 Bd2 f3 Qc1 Bg4 Bg5 Na6 Be2 f1Q Qc2 f2 Qcc1 Nh6 Na3 Nf7 Bf6 Rb8 Qed2 Qe1 Rh3 f1R Nf3 g1B Nc2 g2 Be5 Be3 Rb1 a1Q Rb3 Qb2 Nh4 Bf2 Qf4 Qb4 Rf3 Re1 Na1 Qg5 Qf5 Qg8 Rc3 Qh7 Qg5 Qa5 Rc2 Qbb4 Bf1 Re4 Qff6 Bg1 Rf5 Bd1 Be2 Qb2 Bd6 Ree8 c6+ Ka8 c7 Kb7 Bb4 Be3 Bc3 Bf2 Kd2 d3 Rf3 Qaa2 Bd4 Ne5 Bc3 B2c5 Bd4 Qc4 Ke3 d2 Kf4 Nd3+ Kg4 Qcb3 Be5 Nc1 Rd3 d4 Kf4 Ka8 b7+ Ka7 Rf3 d3 Kg4 Bd4 Kf4 Qb4 Kg4 Rbd8 b8R Rc8 Rb6 Rb8 Rd6 Kb7 Kf4 Qa5 Rd8 Ba7 b6 Qe7 Kf5 Qeb4 Rc6 Bc2 Rd4 d1N Rdd6 d2+ Rdd3 Nc3 Rc5 Be7 Ke6 Nb1 Rcc3 Bd1 Rc2 Bf8+ Kf7 Rbc8 Qg4 Ka8 Bf1 Be2 Qd7 Be7 Ke6 Rcd8 Rd6 d1Q Rd4 Qdd2 Rdd3 Bd1 Be2 Qh6 Qd4 Q2c3 Qe3 Qh7 Qeg5 Bb8 b7+ Ka7 Rh3 Qcb2 Rhf3 Kb6 Rdc3 Ba7 Rcd3 Qbe4 b8Q+ Qb7 Qc8 Bf8+ Qe7 Qbe4 Qd7 Qeb4 Bd6 Rb8 Be5 Rec8 Qf7 Kb7 Qff6 Re8+
2Bq2r1/qQR1pn2/4K3/b5q1/1nPr2Nr/P1N1Qqk1/bN3nrR/3B2B1 w - - 0 1 legal: proof: e4 a5 b4 axb4 h4 f5 exf5 c5 d4 cxd4 Ba6 g5 Bf1 gxh4 Kd2 Kf7 Kd3 Kf6 Kc4 Ke5 g4 d5+ Kc5 b5 f6 h5 a3 b3 f7 h3 c3 h2 g5 b4 g6 d3 f3 d2 g7 Kf4 Bc4 h4 Bb2 d4 Qe2 d1Q Bb5 h3 Bd3 Qc1 Qd2+ Kg3 f4 Rh4 f5 Be6 f6 Nc6 Bf5 d3 Nf3 Nh6 g8B Bg7 f8N Nf7 Qe3 d2 Ng6 d1R Nf4 Rd4 Nd3 Qg1 Bc1 b2 Bg4 Bd5 Bc8 b3 Bh7 Qg2 Nfe5+ Qf3 Ng4 Nb4 Ra2 Rb8 Re1 h1R Bg6 h2 Bh5 Rg1 c4 h1N Nc3 b1Q Rh2 b2 Rd1 Be4 Rdd2 Rg2 Rd1 Nh6 f7 Nf2 f8Q Nf7 Qe8 Qa1 Qd7 b1Q Qb7 Qaa2 Bd2 Qc1 Nb2 Bb1 Be1 Qb3 Rd3 Qa4 Bd2 Rf4 Rd7 Rd4 Rc7 Ba2 Be1 Nd5 Bd2 Qa7+ Kc6 Be5 Be1 Bd6 Bd2 Bb4 Be1 Qh8 Kd7 Qd8+ Ke6 Qd2 Bg6 Ra8 Bc2 Ba5 Bd1 Rb8 Qh6 Qdf4 Bd2 Nb4 Be3 Ra8 Qg5 Rb8 Qc5 Qg5 Qcb6 Nh3 Bg1 Nf2 Qc5 Rd7 Qe3 Rd4 Qd2 Ra8 Qe3 Qf8 Bd7 Qfb8 Rc5 Qc7 Rc6 Rd8 Bc8 Rg8 Rc5 Qd8 Rc6 Nc2 Rc7 Nb4
n3Krn1/3pb1bn/3R2pN/5nn1/2NBn2P/N6N/k2N1P1R/3Qr1bB w - - 0 1 legal: proof: e4 a5 b4 axb4 h4 f5 d4 fxe4 d5 g6 h5 c6 h6 cxd5 Bf4 d4 Bg5 Ra3 Bc1 Ra8 Bf4 b6 Bb5 Ba6 Ba4 Bf1 Bg3 Qc7 Bb5 Qe5 Bh4 Qg7 hxg7 h5 Bg5 h4 Bc1 h3 Bc4 h2 Ba6 Bc4 Bb5 Be6 Bf1 Bh3 gxh3 Rh4 Ba3 Rh7 Bc1 Rh8 Kd2 Kf7 a4 Ke6 c4 b5 a5 d3 Ke3 b3 Kd4 b4 Kc5 b2 a6 e3 a7 d2 h4 e2 Qc2 e1B Qc3 d1N Bg5 b3 Ne2 Ne3 Ng1 Nd5 Bh6 Ndf6 Bd3 Na6+ Kb5 Nh7 c5 Kd5 c6 e5 c7 e4 c8N e3 Qc2 e2 Bc1 Bc3 Kb6 e1B Kb5 Bed2 Ra4 Be7 Rf4 Nc7+ Kb6 Bcf6 Ra4 Bf4 Nd6 Re8 Nd2 b1N a8N b2 Qd1 Nc3 Nh3 b1N N6c4 Ne4 Bb2 Nbc3 Na3 Neg5 Ra6 Nce4 Bd4 B6e5 Bf1 B5f6 Bg2 Bg3 Rg1 h1N Bf3 Rf8 Rg2 Bh2 Kb7 Bg1 Rh2 Ng3 Bh1 Nf5 Nb6+ Kd6 Nbc4+ Kd5 Rb6 Na8 Re6 Ngh6 g8N Bg7 Ba1 Kc5 Rd6 Kb4 Bd4 Re8 Nf6 Rhf8 Ng4 Ng8 Nh6 Rc8 Nb6 Rc1 Nbc4 Rf6 Kc8 Ra1 Qe2 Re1 Qf1 Bef8 Kd8 Be7+ Ke8 Rf7 Ndb1 Kb3 Nbd2+ Ka2 Qe2 Rf6 Qd1 Rf8+
R1Bbrr2/rqQ1R3/2pB2KP/3Rq3/R1NBP3/r3b1qN/kr2n3/n6b w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 exf4 Nc3 d5 Nb1 dxc4 Kf2 Ke7 h4 Ke6 b4 Kd5 d4 g5 b6 f5 h5 a5 b7 a4 e3 c3 h6 f3 Kg3 a3 b5 c2 b6 a2 Bb5 f2 Rh2 f1Q Nh3 Be7 Rd2 f4+ Kh2 f3 Kg3 f2 Be8 Kc4 d5 Kb3 d6 Qh1 d7 f1R Bh5 Nc6 b8R Nb4 b7 Rf8 Qe1 Ra3 Rh2 Nf6 Qe2 Qe8 d8B Nfd5 Qa6 Nf4 Qf6 Ne2+ Kf2 Qe4 Bb2 c1R Rg2 Rc2 Bd4 Rb2 Qf3 Nc2 Ra8 Bd7 b8R+ Qb7 Bg6 Bc6 Bf5 Bd5 Rh2 c6 Qf4 Bh1 Bc7 Bd8 e4 Qe5 Bc8 Rhg8 Rg2 g3+ Kf3 Re8 Kg4 Rgf8 Kh5 g4+ Kg6 Ra7 Rg1 g2 Rc1 g1Q Bd6 g3 Rd1 g2 Na3 Qh2 Nc4 g1B Qf7 Be3 Qc7 Ra3 Ra4 Qhf4 Rab1 a1R Rba8 R1a2 Rd2 Na1 Rf1 Qh2 Rf7 Qf2 Re7 Qff4 R4a5 Qf2 Rd5 Ra7 Ra5 Ra3 Ra4 Qe1 Bc3 Qf2 Rd5 Ka2 Bd4 Qfg3+
1QRb1n1N/4N2p/1nn2B2/q1r2p1P/R6K/Nn2RP1n/B2br3/Nqb1k3 w - - 0 1 legal: proof: c4 d5 b4 a6 b5 axb5 e3 bxc4 e4 c3 g4 dxe4 g5 f6 g6 Be6 Bb2 Bd5 Bc1 Bf7 gxf7+ Kd7 d4 Kd6 a4 Kd5 h4 g5 f3 c5 Kf2 e5 Kg3 b5 a5 b4 a6 c4 h5 f5 a7 e3 Kh3 e4 Ra3 b3 Qd2 b2 Ra6 e2 Ra1 e1N Qg2 c2 Be3 c1N Bf4 g4+ Kg3 c3 Ra4 e3 Be2 c2 Ra2 Nc6 Qh2 Nb3 Nh3 c1B Bg5 Nd3 Nf4+ Kc4 d5 Nge7 d6 Nd5 d7 Nb6 Ng2 Rc8 a8R Be7 Re1 Re8 Kh4 g3 Na3+ Kc3 f8N Kd2 Bf6 Nf4 Ng6 Ne6 Nh8 Nf8 Bc4 e2 Ne3 g2 Nec2 b1Q Qb8 g1N Bg8 Qc7 d8N Nh3 Ra4 Qa7 Bf7 Qa5 Na1+ Ke3 Rc2 Kf2 Rc3 Rc7 Re3 Rc8 Rg1 e1B Rg8 Bed2 Be6 Ncd4 Nc6 Bd8 Ne7 Rc5 Bf7 Nc6 Bc4 Nbd4 Ba2 Nb3 Nd5 Re6 Ne7 Ree5 Rd3 Re2 Re3 Ne6 Re8 Ke1 Rf8 Bc7 Rd8 Nf8 Rc8 Bd8
3RqnrB/p4r2/2Q3Bp/k3q1rN/2b1BN1r/qnb2NP1/RP1B2K1/7r w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 c5 d4 cxd4 Ra4 e5 Ra1 exf4 Kf2 d5 e4 Kd7 c4 Kc7 c5 f5 c6 Kb6 g3 d3 e5 f3 c7 d2 e6 d4 e7 d3 e8N h3 Qc2 d1R Be2 h2 Ng7 f4 Nh3 d2 Re1 h1R Qb3 Nc6 Qc3 Qe8 Ra2 Na5 Ng1 Bb4 Ra1 Nb3 Qc4 Be6 c8B Ne7 Nc3 Ng6 Rf1 Nf8 Ra2 h6 Nh5 Rh4 Bd7 Rg8 Bd3 Rg5 Nce2 Bc3 Be4 Bf7 Qa4 Bc4 Bdf5 Re1 Bg6 d1Q Bd2 Qa1 Bd5 Rc1 Rd1 Qe5 Kf1 f2 Kg2 f1R Bde4 Rd8 Nf3 Rfh1 Bc2 Rd7 Bce4 Rf7 Be1 Qe8 Rd8 Qe5 Bd2 Rcf1 Ned4 Rg7 Ne6 Rg8 Qb4 Qe1 Qe7 Qe3 Qe8 Q3c5 Qd7 Qa3 Qc6+ Ka5 b6 Rd1 Be3 Rd7 b7 Rdg7 b8B Rf7 Ned4 Qe8 Ne2 Qe5 Bc1 Qe8 Bd2 Qe5 Nfg1 Qe8 Be5 f3+ Kf1 f2 Bh8 Qe5 Kg2 Qe8 Nef4 Qe5 Kf3 f1Q+ Ke3 Bd5 Nf3 Qb5 Kf2 Bc4 Kg2 Qe8 Rd5 Qc5 Rd8 Qce5
R2qN1K1/n3R1P1/4rN2/Q2B1rn1/1q1Pr1rN/1b1pNn2/2Rp2nB/1k2b3 w - - 0 1 illegal: No proof kernel
1r5k/q1r5/RQP2NK1/nqr4b/1pN2R2/BP1n4/2qpB1r1/rBN1B2r w - - 0 1 legal: proof: f4 g5 d4 e5 d5 exf4 d6 cxd6 Qd2 d5 Qd1 d4 h4 gxh4 a4 b5 a5 Be7 Be3 Bc5 Bc1 Bb6 axb6 Qf6 Kf2 Qe7 Ke1 Qd8 Kd2 Kf8 Kd3 Kg7 Ke4 f5+ Ke5 d5 e4 h5 g4 a5 c4 f3 c5 f4 b7 f2 g5 d3 b3 a4 g6 b4 Qf3 d2 Ra3 d1Q Ra1 h3 Bc4 f1R Nd2 h4 Qc3 a3 Bb2 h2 Nh3 f3 Ra2 f2 Ra1 d4 Nb1 d3 Kf4+ Nf6 Kg5 a2 e5 d2 e6 Qb6 e7 Ra7 e8B Qc2 Ba3 Nc6 b8B Rc1 Bg3 f1Q Nf2 h3 Nd3 Na5 c6 Rc7 Be1 Qa7 Qd4 Bg4 Qb6 Nh5 Bb5 Kg8 g7 Nf4 Bg6 Qe2 Rg1 h1R Rf1 h2 Rf2 Rg1 Ba6 Ng2 Rf4 h1R Bf5 Qe5 Kg6 Qb5 Be4 Ne3 Bf5 Nd1 Be4 Nf2 Bf5 Rd1 Nc1 Rg2 Be4 Qd5 Be2 Qb5 Bb2 R1h5 Na3 Rc5 Nc4 Nd3 Ba3 Rhh5 Rb1 a1R Rb2 Rhe5 Ra2 Re8 Bf5 Nb2 Bfd3 Rb8 Be4 Qc3 Bb1 Nd3 Bb2 Qc2 Ra4 Nb7 Ra6 Na5 Ba3 Rd5 Bf2 Rh1 Be1 Rdh5 Kf6 Kh7 g8N Kh8 Kg6 Rc5 Nf6 Bh5+
qnB1R1N1/3nb1N1/1Rb1pp1B/5qQP/q1K4n/1rB2P1q/1Nk3p1/3N3n w - - 0 1 legal: proof: d4 c5 b4 cxd4 g4 a5 Be3 axb4 Bc1 h5 e4 hxg4 Qd3 d5 Nd2 b5 Qf3 d3 Nb1 d4 Qd1 Ra6 Bb2 Rd6 Bc1 Rd5 exd5 Bb7 Be3 Ba6 Bc1 Bc8 Kd2 Kd7 h4 Kd6 c4 Ke5 a4 Ke4 d6 g5 d7 g3 h5 g4 c5 e6 a5 b3 c6 g2 a6 b2 c7 g3 a7 b4 a8N b3 Rh3 Bb7 c8N Be7 Ra2 Bc6 Nf3 g1N Nc7 g2 Ne8 Nf6 Ng7 Qg8 d8B Nfd7 Ra5 f6 Ne1 Qf8 Ra8 Qe8 Na3 b1Q Nec2 b2 Nc4 Qa2 Rg3 b1Q Ba5 Qa3 Bc3 Qb5 Rf3 Qf5 N2e3 Qf8 Nb2 Rg8 Ne8 Rg3 Ng7 Qd8 Qb3 Rh3 Rg3 Qf8 Qb5 Nf3+ Kd1 d2 Ke2 Qh8 Ned1 Nh4 Ra6 Qd8 Rb6 Qa8 Rg6 Qc7 Rh6 Qh2 Rh8 Rd3 Re8 Qhh3 Ne3 d1N f3+ Kf4 Qd5 Nf2 Ned1+ Re3+ Kd2 Nh1 Ba6 d3 Qb5 Re5 Qa5 Rb5 Bb7 Rb3 Qb5 Ba3 Ne7 Bd6 Ng8 Be7 Ke1+ d2+ Ke2 Qg5 Kd3 Qgg4 Ne3 d1Q+ Kc4 Qf5 B1d2 Qda1 Bc8 Q1a4+ Bb4 Kg3 Bc3 Kf2 Ned1+ Ke2 Bd2 Qg6 Bh6 Qb1 Qg5 Qbf5 Ne3 Q4a7 Bc3 Qa3 Be5 Kd2 Ned1+ Kc2 Bc3 Q3a4+
3RB1Q1/3PK3/2kB2b1/Qbr3NR/p2bbb1b/P2N4/1n2b2q/bn2Rr1R w - - 0 1 legal: proof: f4 c5 g4 h5 c4 hxg4 b3 e5 b4 exf4 bxc5 d5 Qc2 dxc4 Qa4+ Bd7 Qd1 Bc8 Kf2 Kd7 d4 b5 h4 a5 e4 f5 a3 g5 e5 a4 d5 f3 Kg3 c3 h5 f4+ Kh2 g3+ Kh3 b4 Kg4 f2 Kf5 g4 d6 g2 h6 c2 e6+ Kc6 d7 f3 h7 g3 e7 b3 Ke6 b2 e8Q Bg7 Be2 f1B Nh3 g1B Qg6 f2 Bh5 g2 Qe8 Be2 Bg5 f1B Nd2 b1B Rh2 c1B Nf2 Ra5 Qf8 Bg6 Qc2 Nf6 Nh3 Ne4 Qc4 Bf2 Be7 g1B Qc3 Bh4 Nf2 Qc7 Nf3 Nd2 Rh1 Bb7 Ng5 Qh2 Bd6 Nb1 Qg8 Na6 Ke7 Bf4 Nd3 Nb4 Qe1 B1d4 Qc3 Nd2 Re1 Nb1 Qd2 Ba1 Qc3 Bd4 Qd2 Kb5 c6 Kb6 c7 Bbe4 c8R Rc5 Rd8 Kc6 Qe8 Rf8 h8R Rf6 Qg8 Rff5 Nc1 Nd3 Qa5 Nb2 Nd3 Bh7 Be8 Bg6 Nc1 Bb5 Rh5 Bfe2 Nd3 Bc1 Qa7 Rf1 Qa5 Bf4
3nnB2/K1pb3B/NqPNNNn1/r3p2R/1p2qrr1/2k3n1/PR1b2QQ/8 w - - 0 1 legal: proof: e4 a5 b4 axb4 h4 g5 e5 gxh4 d4 e6 d5 f6 dxe6 fxe5 Bd2 b3 Ke2 Ke7 Ke3 Kd6 g4 Kc5 f4 h5 c4 d5 e7 b5 e8N d4+ Kd3 b4 g5 h3 f5 h2 f6 b2 f7 h4 g6 h3 g7 Qd5 Bg2 Rh4 Qf1 Nc6 Ne2 Rg4 Bh6 Nd8 Be4 Nf6 g8N Bd7 Nd6 Ne8 Nf4 Ra5 Nc3 b1N Bh7 Nd2 Rb1 Nf3 Rb2 Nh4 Bg7 Be7 f8Q Ng6 Qf3 Bg5 Ne6+ Kc6 c5 Bh6 Re1 h1Q Nce4 h2 Q8f4 Qf1+ Qe2 h1N Bf8 Bg5 Qd2 Ng3 Ngf6 Qf5 Rh1 Bh6 Nf7 Kb5 Rh5 Qb7 c6 Qf4 Kc2+ d3+ Kb3 Qe3 N4c5 Qe4 Qf2 Qb6 Qc2 d2 Qh2 d1R Qcf2 Qb8 Qfg2 Bd2 Nd6+ Kb6 Rh6 Rf1 Rh5 Rff4 Na6 Rc5 Ka4 Qb7 Nb8 Rd5 Ng5 Kc5 Ka5 Kd4+ Nb5+ Kd3 Ne6 Rd4 Nd6 Kc3 Na6 Qb8 Nac5 Rd5 Ka6 Qb5+ Ka7 Qbc4 Na6 Ra5 Be7 Qb5 Bf8 Qb6+
1Rr2nKQ/5R1b/pbr3p1/Q2PBPB1/RnqB4/1Np4k/qQ5q/6n1 w - - 0 1 illegal: No possible last move
3Kn1k1/8/b2QPbP1/2Rqb3/B4Nqq/3R1BBB/nb1R3b/B3b1b1 w - - 0 1 illegal: No possible last move, all moves rejected
1qQ5/p1N2K1b/2Q1nN2/p1bR4/Pk2BB2/2rP1rp1/bBq2pB1/2Nq4 w - - 0 1 legal: proof: b4 e5 f4 exf4 a4 h5 g4 d5 c4 hxg4 cxd5 b6 Ra3 Rh4 Rc3 Qg5 Rc5 Qd8 Rb5 Rh8 Ra5 bxa5 b5 c5 b6 Bd7 b7 Na6 b8Q Nb4 Qb7 Rc8 Qa8 Nc2+ Qxc2 Rc7 Qd1 Rc6 Kf2 Ke7 e4 Kd6 h4 g5 d3 f5 h5 f3 Ke3 c4 Kd4 g3 h6 g2 h7 c3 Rh5 f4 Ne2 g4 Qc2 f2 Nd2 g1Q Bg2 g3 Qc8 f3 Rf5 Nh6 e5+ Ke7 e6 Kd6 e7 f1B+ Ke4 Kc5 Ke5 f2 e8B Be6 d6 Kb4 d7 Ba2 Ne4 Bc5 Nf6 Rf8 h8B Rf7 Be4 Bh3 Bf4 Qd1 Nc1 Qb6 Rh5 Bf5 d8N Bh7 Ne6 Nf5 Nc7 Qb8 Bg2 Rf8 Bg6 Ng7 B6e4 Ne6 Rg5 Bg8 Kf5 Rf7 Kg6 Bh7+ Kh6 Rf8 Rd5 Rf7 Qe2 c2 Qf3 Bg8 Kg6 Rf8 Ne2 c1Q Bg7 Qcc2 Nc1 Re8 Bh8 Bh7+ Kf7 Rg8 Nh5 Rg5 Bb2 Rf5+ Nf6 Be3 Qg4 Rc3 Qa6 Bd4 Qc6 Bc5 Qg8 Qb3 Qc8 Qbc2 Bh6 Rf3 Be3 Qf1 Bf4 Qfd1
1b3R2/3B2nN/3b1p2/1q1Rr1N1/1B1R2Bp/3qRrPb/K5P1/2krN1q1 w - - 0 1 legal: proof: c4 a5 f4 e5 b4 exf4 a4 d5 cxd5 b5 axb5 Bg4 Nf3 Bf5 Ng1 Bc8 b6 g5 b7 g4 Qb3 Na6 b8R Nc5 Qf3 Ne4 Rb7 Ng3 hxg3 gxf3 b5 Bh6 Ra7 Bg7 Ra4 Bf8 Rb4 axb4 Ra2 Ke7 Ra1 Ke8 Kd1 Ke7 Kc2 Kf6 Kb2 Kf5 d4 Ke4 d6 c5 d7 h5 b6 f6 d5 c4 b7 b3 b8R h4 d6 f2 Ra3 f3 Bd2 Nh6 Bb4 Ke3 Nc3 Kd2 e4 Be7 e5 Nf5 e6 Ra5 Be2 f1R Ra8 f2 Bg4 Qb6 d8N Re5 d7 Ng7 Nf7 Qb5 d8R+ Bd6 e7 Rg8 Rd7 Rd8 e8B Rd1 Rb8 f1Q Ng5 Qd3 Nh7 Rf1 Ra5 Rf3 Ne4+ Kd1 Neg5 c3+ Ka1 b2+ Ka2 c2 Rba8 Bb8 Rd4 c1B Bed7 Bf4 Ra3 Kc1 R3a5 Rf2 N1f3+ Rf1 Ne1 Rf3 Bc6 Rdd5 Ra3 Be6 Bd7 Bd6 Rf8 Bb8 Bh5 Bh3 Bhg4 Bd6 Rb3 b1Q+ Ka3 Qf1 Re3 Qb1d3+ Ka2 Qf2+ Ka1 Bb8 Rf1 Qg1 Ka2 Rf5 Rf2 Bfd6 Rd2 Rde5 Rd5 Rf1 Rd4 R5f3 Rd5 Qe4 R2d4 Qed3 Nc2 Rd1 Ne1 Qf5 Rf4 Qg6 Rfd4 Qgd3
1n1n2bn/N2n2NK/1k5P/R1q3P1/6rq/2qNB2p/4bn1B/RB1N2Rr w - - 0 1 illegal: No proof kernel
5nR1/1k1p1NRp/nB1qpq2/1B1NPr2/n1P5/2q3Nb/1R2r1pB/3Kb1B1 w - - 0 1 legal: proof: g4 b5 d4 g5 h4 c5 a4 cxd4 axb5 gxh4 g5 f5 Qd2 Na6 Qf4 Nb8 Qg4 fxg4 e4 a5 b4 e6 f4 a4 g6 a3 b6 h3 g7 g3 b7 d3 f5 h2 f6 d2+ Kd1 a2 b5 Ra7 b6 Na6 b8B Ne7 g8R Bb7 Ne2 Ng6 Rg1 h1Q Nbc3 Qh2 Rb1 a1Q Nd5 Qc3 Bc7 Ra8 Rg7 Bb4 Rb2 Nf8 Rg8 Bc6 b7 Qe7 b8B g2 Bb6 Qhd6 Ng3 Bb5 e5 Bd3 B8a7 Bf5 Bb5 Bh3 Rf1 Ba5 Bg1 Kd8 f7 Kc8 Bab6 Qf6 Rf5 Rb8 Rfg5 Kb7 R5g7 Rc8 Bh2 Rc4 Bbg1 Re4 Bb6 Qd3 c4 Re2 Rc2 Qb3 Bb2 Bb4 B2d4 Qc3 Bf2 Bc5 Bfg1 Bf2 Ra2 Be1 Rb2 Qd4 Kc2 d1N+ Kc1 Ng6 f8N Nc3 Ne4 Na4 Ng3 Qc3+ Kd1 Nh4 Rg4 Ng6 Rg7 Nh4 Ng6 Rf8 Nh8 Ng6 Rg8 Rf7 Rg7 Nf8 Rg8 Rg7 Nf7 Rg5 Rg7 Rf5 Rg8 Qda3 R4g7 Qd6
nrRq4/1N3K1Q/q3r2b/Q3N1Q1/1Q2b1B1/QP4Pq/1n1b3k/N2r1n1n w - - 0 1 legal: proof: a4 e5 f4 exf4 c4 d5 cxd5 b5 axb5 g5 d4 h5 Be3 g4 Kd2 g3 Bf2 gxf2 Ra4 h4 Ra1 h3 g3 Rh4 Kc1 Rh5 Kd2 Rh8 Nf3 Bb4+ Nc3 Nh6 Qb3 Qh4 Bg2 Kf8 Rag1 Ba3 Bf1 Bc5 Rg2 Qd8 Ng1 Ke8 Qd1 Ng8 Nb1 Bf8 Qe1 hxg2 Qc1 Qd6 Qd1 Qd8 Kc3 Ke7 Kc4 Kf6 h4 Kf5 e3 a5 h5 c5 h6 f3 h7 Kg4 e4 f5 e5 a4 e6 f4 d6 a3 Kd5 c4 b3 c3 d7 c2 b6 c1N e7 a2 Ke6 a1Q e8Q Nf6 b7 Na6 b8N Nd3 d5 Bh6 d6 Nb2 Be2 f1Q Qf8 Ne4 Qc1 Bb7 Nc6 Rb8 Na5 Nc7+ Kf7 Nf2 Na3 Be4 Nb7 Na8 Nc2 Qa6 Na1 Rg8 h8Q Rg6 Qh7 Re6 Rh3 Nh1 Qd2 Qc1 Qb4 Qcc8 Bd3 f2 Nf3 f1R Be2 g1B Ne5+ Kg5 Rh2 Be3 Bg4 f3 Rc2 f2 Rc7 Rd1 Rc3 Qcc4 Qa3 Qf1 Rc8 Qh3 Qb4 f1N Qa3 Qdb6 d8Q+ Rf6+ Ke8 Bd2 d7 Qd4 Qda5 Re6+ Kf7 Qdb6 Qfc5 Qd8 Qcb4 Qh8 d8Q+ Qf6+ Kg8 Qh2 Be2 Qe7 Nf3+ Kg4 Ne5+ Kh3 Bh5 Qed6 Qg5 Qd8+ Kf7 Kg2 Be2 Qh3 Bg4 Kh2
R4Qn1/1K3Pb1/rr5b/1BNR4/b1np1B1r/4b1PB/1pN2k1P/1b1q2Nq w - - 0 1 illegal: No proof kernel
B2rK3/1Nb5/6nq/Bq2nR2/qpQRnb1P/3pp3/1r1P1Pk1/2RNr1N1 w - - 0 1 legal: proof: e4 f5 b4 fxe4 g4 a5 Bg2 axb4 Bf1 h5 c4 hxg4 Ba3 b5 Nc3 b3 Nb1 b4 Bb2 Ba6 Bc1 Bb5 cxb5 Ra6 Nh3 Ra4 Ng1 Ra8 Ke2 Kf7 Ke3 Kf6 Kf4 c5 h4 g5+ Ke3 Ke5 a4 d5 a5 b2 b6 g3 b7 g2 a6 g4 a7 g3 Ra5 c4 Ne2 g1B Ra6 g2 Rg6 c3 Rb6 c2 Nd4 Nc6 b8R Bh2 Rg1 Bh6+ Ke2 Kf4 Rh1 g1Q Qe1 e5 Qd1 e3 Kd3 e2 Nf3 e1R Qe2 d4 Kc4 e4 Kb5 e3 Qc4 Qd7 Bg2 Nge7 Nc3 b1N Nd1 Ng6 Bb2 c1Q Rd8 Qf1 Ng1 Nce5+ Bc6 Rc8 a8N Rh7 Nc7 Nc3+ Kc5 Rf7 Ba8 Qa4 Kd6 Ne4+ Ke6 Qca1 Na6 Rd7 Rb5 Kg4 Bc3 B6f4 Nc5 Qe2 Ra5 d3 Nb7 Qb5 Bd4 Qaa4 Bb6 Rc5 Qb3 Rc2 Qc4 Rb2 Bc7 Rf7 Rd4 Rd7 Nh3 Kf3 Ng1+ Kg2 Bb6 Qc5 Rb5 Qh5 Ba5 Qf8 Rc5 Qfh6 Rcd5 Nc6 Rf5 Q5g5 Rf8 Qgb5 Rf5 Rd6+ Kf7 Rd7+ Ke8 Bc7 Nf3 Nce5 Rf1 Bg3 Ng1 Bf4 Nc3 Re2 Rc1 Re1 Nd1 Rd8#
1B2bR2/PRNb3q/nKb1B3/Q1q3rP/1bP1rnb1/n7/rN4Qp/1B2k3 w - - 0 1 illegal: No proof kernel
2nQ1R2/PBr4q/rp1N4/PqnN2P1/1b2b3/krB1R3/3nrKBr/b3Q3 w - - 0 1 illegal: No possible last move
n4B1r/2N3Qn/K3qqB1/B1R1b1rQ/2nPnr1P/kb1b3p/3Nb1P1/3R4 w - - 0 1 illegal: No proof kernel
Rqn2N1b/r7/3rBP2/qbK4N/r3k1n1/p3r1Qn/1BRPNp1P/4qQ2 w - - 0 1 illegal: No proof kernel
1kbK2n1/1B2P1n1/1R1b2N1/1Bnrp2Q/r1P1P3/q3R3/3pr1rr/QN2Rr2 w - - 0 1 illegal: No proof kernel
Q3Q1R1/q1rq2pK/B1PNb2N/r1r1r1k1/1bp3q1/2RB1pP1/rBP5/7n w - - 0 2 legal: proof: f4 c5 d4 h5 b4 e5 g3 exf4 b5 c4 b6 h4 Kd2 h3 Ke1 Na6 Qd3 Nc5 dxc5 axb6 Qd4 b5 Qd5 b4 Qg2 hxg2 Kf2 Ke7 Kf3 Kf6 Kg4 d5+ Kf3 b5 a4 b3 e4 d4 h4 b4 a5 b2 a6 d3 c6 d2 a7 d1Q+ Be2 b3 h5 Kg5 h6 f5 e5 Nf6 h7 Ne4 e6 Bb4 e7 Nf2 e8Q Be6 Ra3 Q8d7 Nd2 b1R Bb2 Ra1 Rh3 Rf8 h8Q Ra2 Rh1 Rc8 a8B Rc7 Bb7 Rf7 Rh3 Nh1 Ba6 Re7 Qa8 Re8 Qf8 Re7 Rh8 Re8 Rg8 Re7 Ba1 b2 Rc3 b1R Bb2 Rba1 Qfb8 Ra5 Qe8 R1a2 Nh3+ Kh6 Nb3 g1Q Nd2 Qa7 Nf2 Kg5 Ng4 Rc5 Nh6 Raa5 Kg2 f3+ Kh3 f2 Bd3 f1R Bb7 Kf6 Kh4 f4 Bc8 Qf3 Ba6 Rfa1 Ne4+ Ke5 Kg5 R1a2 Kg6 Qg4+ Kh7 f3 Nd6 Kf6 Qf7+ Kg5 Qff8 Bf7 Qfc8 Ree5 Qe8 Be6
1k4rr/3nNN2/p3Q1n1/3pR2K/Nn1P1Q2/np1BqPp1/B1b3P1/R3qr2 w - - 0 2 illegal: No possible last move
k1Kn2B1/4Q1b1/P5N1/2Bp2q1/BP1nnB1r/qPR3r1/1r2RN1b/5n1r w - - 0 1 legal: proof: g4 e5 f4 exf4 b3 b5 d3 c5 g5 c4 g6 b4 Bd2 a5 Qc1 a4 Qb2 a3 Qd4 hxg6 Qf6 g5 Bc1 g4 c3 Ba6 cxb4 Bb5 Qb2 axb2 Be3 c3 Bc1 Bc4 dxc4 Rh4 Nh3 Rh5 Ng1 Rh8 Kf2 g5 e4 d5 h4 Kd7 a4 Kc7 c5 Kb7 c6+ Ka7 h5 f5 c7 f3 Ke3 c2 Kd4 f4 Ke5 f2 Ke6 f3 c8B g3 h6 g4 a5 g2 e5 g3 h7 Be7 a6 Nf6 Bf4 c1Q Ra2 Bf8 Ne2 g1N Rh3 g2 Nbc3 b1R Ne4 Qa3 Bd7 Rg8 h8B Rg3 Ba4 Bg7 Rc2 Qg8+ Kd6 Nc6 Kc7 Nd8 e6 Rb8 e7 Ka8 e8Q Rb2 Qe7 Rb6 Kc8 Re6 Nd4 Ne2 Nc6 g1B Ne5 Nd4 Re2 Bh2 Ng6 Re5 Bg2 f1R Nf2 Rh5 Bh1 Rh4 Bg2 Bh6 Bg7 Rh1 Bf8 Ne4 Bf1 Rgg1 Rg3 Bg7 Bh3 Rg2 Be6 Rgg1 Rh3 Rg3 Bf7 Qh7 Bg8 Qh5 Qc7 Qe5 Bc5 Qg5 Qe7 Rgg1 Ng4 f2 Rc3 f1N Nf2 Rg3
kq2b3/1n2nbR1/p2qpPq1/1rr5/p1Q2bRR/2KBp2N/P1p1PR2/N1B5 w - - 0 1 illegal: No proof kernel
1qq1B3/5RP1/rP2k1p1/K4p1n/2R3bQ/2n1pRN1/Q1Q3rP/1rn1N2q w - - 0 1 illegal: No possible last move, all moves rejected
1NRB2QK/2nB1q2/pn1kr2p/rQ1nr3/1b6/qPNQ3P/P5r1/bq1B4 w - - 1 2 legal: proof: e4 e5 c4 d5 c5 dxe4 f3 e3 c6 e4 Qe2 Bf5 Kd1 bxc6 Kc2 c5 Qe1 e2 Qd1 c4 Kc3 e3 b3 g5 Na3 Bc2 Rb1 Qd7 Rb2 Be4 fxe4 Qd4+ Kc2 Qd8 Kc3 Qe7 Rc2 Qd8 Kb2 Qe7 Rc3 Qd6 Kc2 Qd7 Rd3 Qd8 Rd6 Bh6 Rf6 Bf8 Rf4 gxf4 Kc3 Kd7 Kd4 e1R Ke5 f5 g4 c5 d4 h6 g5 c3 g6 c4 d5 c2 h3 f3 g7 f4 d6 e2 Qd3 c3 Qa6 f2 Be3 c1Q Bc5 f3 Qb6 c2 Nc4 Nf6 g8Q Ne8 Qa5 Qa3 Bb6 c1B Rh2 Kc6 d7 Qde7+ Kf5 Rh7 Kg6 Bb2 d8Q Nc7 e5 Nd7 e6 Ba1 Ne5+ Kd6 Qb5 Rh8 Bg2 f1Q Nc6 f2 Nb8 Rh7 Bf3 Rg7+ Kf5 Qe8 e7 Rg2 Rh1 Rc1 Rh2 e1R Ne2 Rc6 Nc3 Re3 Bd1 Re5+ Kf4 Qh5 e8B Qe1 Rh1 f1N Rh2 Ne3 Ba5 Rb2 Rc2 Qg6 Rc1 Qb1 Bb6 Ned5+ Kg4 Qf1 Ba5 Re6 Kh5 Rc5 Rc2 a6 Bb6 Re5+ Kg6 Qf6+ Kh7 Qf7+ Kh8 Ra7 Qd3 Ra5 Qdg5 Be7 Rc1 Rc2 Qgf5 Rg2 Qb5 Re6 Qfd3 Ra8 Bg1 Nb6 Bd7 Ra7 Be3 Rb7 Bg5 Bf8 Nc6 Rb8 Bd8 Rc8 Nb8 Re5 Bg5 Rce8 Bd8 R8e6 Ne2 Nca8 Rc8 Nc7 Nc3 Be7 Na4 Bg5 Bc2 Bd2 Bd1 Bb4 Nc3 Qf8 Qf5 Qe8 Qfd3 Qf7
1b2NB1n/1q2Q1p1/1PB5/P1q2k2/R1p1nb2/K1N1n1P1/b2b2Br/1QN1r2n w - - 0 1 illegal: No proof kernel
r2nn3/2Rpp3/2R1rbP1/2Q3q1/1pQ1P1rB/RBPb3n/3k1NBn/K2q4 w - - 0 1 legal: proof: f4 a5 g4 h5 b4 axb4 d4 c5 f5 cxd4 Nd2 g6 Nc4 Qa5 Ne3 Qb6 fxg6 Qc7 g5 Qd8 Ng4 hxg4 Kd2 b5 h4 f5 a4 b3 e4 f4 g7 Kf7 a5 Ke6 g6 Ke5 c3 g3 h5 d3 a6 f3 a7 Kf4 h6 b2 h7 b1R Qe1 f2 Ra5 g2 Kd1+ d2 Kc2 Nf6 g8B Nc6 Ra6 Bg7 Rh5 Ne8 Qe2 Bf6 Bb3 Qa5 Qc4 Ke3 Nh3 g1N Bg2 f1N Nf2 Nh3 Rc5 Nd8 Rc7 Nh2 Rac6 Ba6 Qc5+ Ke2 Qc4+ Ke1 Qc5 Ra1 Kb2 d1Q Bg5 b4 Bh4 Kd2 Qc4 Rf8 h8Q Qg5 Qc5 Bf1 Qg8 Ra6 Qgc4 Rb6 Ka2 Bd3 Kb2 Be5 Ka2 Rf4 Kb2 Bf6 Ka2 Rc8 a8R Rg4 Ra3 Ra8 Kb2 Qe2 Ka1 Rba6 Rc8 Qf3 R6c7 Re6 Rc6 Qe2 R8c7 Qd1+
1k1rn1qQ/1r1r2n1/1K1N1R2/2QbB2p/1B2P2p/1B2pPrP/pQ6/N1br4 w - - 0 1 illegal: No proof kernel
4b3/Np1Pb1Pp/3Kp3/3RP3/1RN3n1/2pp1pn1/rn1RNQ1r/k2Bq1Q1 w - - 0 1 illegal: No proof kernel
B3N1n1/q3pQ1b/1k1rr2p/1qb1PBnN/1N1B1q2/Pb6/4P1n1/4BbKR w - - 0 1 illegal: No proof kernel
3n2Nr/1K2nR2/1Q2P3/2Pk1q1R/1pb2b1R/1QRPq3/1B3B1p/1rqnq3 w - - 0 1 legal: proof: f4 b5 a4 g5 axb5 e5 h4 exf4 hxg5 c6 b6 Bb4 b7 Bf8 b4 Na6 c4 Qe7 b5 Nb8 e3 Qf6 b6 Qd8 Nc3 d5 Nb5 cxb5 c5 Bd7 Be2 Bc8 Bc4 dxc4 Kf2 Ke7 Kf3 Ke6 Ke4 a5 g4 h5 d3 f3 g6 c3 g5 h4 g7 h3 g6 c2 Ne2 f2 Ba3 c1Q Bb2 f1N Ng3 b4 Ra3 a4 Rc3 a3 Nf5 a2 Ne7 Nc6 b8B a1Q b7 Qe8 Bg3 f6 b8Q h2 Qb6 Ba6 Bf2 Bc4 Qb3 Qab1 Rg1 Ra1 Rg4 Qe1 Rf4 Qbc1 Rh4 Rb1 Rh5 Nh6 g8R Nf5 Rh4 Bh6 Rg7 Bf4 Ng8 Ne7 Rf7 f5+ Kf3 Rh5 g7 Rh8 e4 Ne3 e5 Kd5 Rh5 Nd1 e6 Qd7 Nh6 Qc7 g8R Qce5 Rg4 Qd4 Rgh4 Qde3+ Kg2 Bg5 Ng8 f4 Qc2 f3+ Kg3 Nb8 Qb3 Nbc6 Kg4 Ng6 Kf5 Bf4 Bg1 f2 Kf6+ Nce5 Kf5 f1Q Bf2 Qfh3+ Kf6 Nf8 Ke7 Ng6+ Kd8 Ne7 Kc7 Qf5 Kb8 N5c6+ Kb7 Nd8+
1b1Qq3/n1P2b2/2Rp1n2/BnPBpK1R/1n2Q2B/2Brb2k/1r2P1q1/2N5 w - - 0 1 legal: proof: d4 c5 dxc5 a5 g4 f5 a4 fxg4 b4 h5 Nd2 axb4 Ne4 b5 axb5 h4 Ng3 hxg3 Kd2 Kf7 Kd3 Ke6 Ke4 g5 h4 g2 c4 b3 f4 b2 h5 b1N b6 g3 h6 g4 h7 Qe8 b7 Ra2 c6 Na6 b8Q Rb2 c7 Na3 Qb7 Nb5 Qd3 Nb4 Nh3 g1Q Qd4 g2 Bd2 g3 Rc1 Na7 Nf2 d6 Qdb6 Bh6 Rh5 Qh2 Qa8 g1N Bg2 Nf3 Nd3 Nd4 f5+ Kf6 Qbb8 Be6 Qd8 Bf7 Rc3 Qh1 Nc1 Ndb5 Bf3 g2 Qb7 Kg7 f6+ Kg6 Rc2 g1B Bg2 Nd5 Ba5 Nb4 Bf3 Qg2 Rc3 Be6 f7 Bhe3 f8B Bf7 Bh6 Bgf2 Bg5 Bg1 Bh4 Bgf2 Rf5 Kh6 Rc5 Nf6+ Kf5 Bg1 Bd5 Kh5 Rc6 Rg8 h8B Rg3 Rd3 Bgf2 Rd1 Rh3 Rh1 Bg1 Be1 e5 Bc3 Kh4 Bg7 Bb6 c5 Bf2 Bh6 Be3 Bg5+ Kg3 Rg1 Kh2 Bh4 Rg3 Rf1 Kh3 Rg1 Bd4 Rf1 Rd3 Rf4 Be3 Rg4 Nc8 Rg5 Ba7 Rh5 Bb8 Qa6 Na3 Qc4 Na7 Qe4 N3b5
k2K2rn/1qpp1B2/3R1P2/qn3Np1/b1b1Qbp1/1BP5/BpBP4/1QB2r2 w - - 0 1 legal: proof: b4 e5 e4 h5 g4 hxg4 f4 a5 bxa5 f6 a4 Rh7 Nc3 Rh5 Nce2 Rh6 f5 Rh5 Nf4 Rh8 Rb1 exf4 e5 Bb4 e6 Ba3 Rb5 Bf8 Re5 fxe5 Kf2 g5 h4 b5 h5 e4 h6 b4 c3 f3 Ke3 b3 Kd4 e3 Ke5 f2 h7 e2 e7 e1Q+ Ne2 Ra7 a6 Rb7 a5 Rb4 a7 Bb7 a8B Rf4 a6 Bc6 a7 Qc8 Rh6 Qb7 Rd6 Nh6 Kf6 Nf7 Nd4 Ba4 Bd3 f1B Bc2 Rg8 h8Q Nc6 Qh1 Bc4 Qe4 Qe3 Qf1 Nh8 Qfd3 b2 Bb3 Rf3 Qb1 Rf1 Bc2 Qb6 Bb7 Qg1 a8B Na7 Bd5 Nb5 Be6 Qh1 Bad5 Bd3 Ba2 Qa5 Beb3 Bc4 Qe1 Qha8 Qe4 Qb7 Ke5 Kf7 e8B+ Ke7 Bf7 Kd8 Kf6 Kc8 Qe1 Kb8 Qe4 Bh6 Ke7 Ka8 f6 Bf8+ Kd8 Qc6 Nf5 Qb7 Rd3 Bc5+ Qe8 Be3 Rd6 Rg7 Qe5 Bf4 Qe4 Rg8+
1q4n1/b1n3B1/4B2Q/1nQ1q1r1/q1n1P1n1/1rB1q1k1/1PRPQ1N1/5bKQ w - - 0 1 illegal: No proof kernel forced: bxDB
2B4b/N3RPk1/KP2pp1N/n1q5/r2pP3/1p3b1n/Q1NR2P1/b1B1qq1b w - - 0 1 illegal: No proof kernel
2R3N1/7k/B2q2r1/2rb1ppr/3pP2P/Q1P1bpNB/KPQ1p3/R1n1b3 w - - 0 1 illegal: No proof kernel
nB1kr3/pbnBR3/P2PpQ1Q/2N2K2/r1r1r3/qPr5/qR2P2q/1N5r w - - 1 2 illegal: No possible last move, all moves rejected
n2n1k1r/1P1BNp1p/1p1Rn3/4KbP1/6Qn/R1p3r1/QPP2B2/b3n1bN w - - 0 2 legal: proof: f4 g5 e4 b6 h4 gxh4 a4 d6 e5 dxe5 a5 exf4 a6 f3 Ra5 Qd5 Ra1 Qb7 axb7 Be6 Ra3 Bh3 Ra1 Bc8 Kf2 c5 Ke3 a5 Ke4 e5 g4 h3 d4 c4 d5 h2 d6 f2 g5 a4 Kd5 a3 Qd2 e4 Ne2 e3 Qe1 a2 Bd2 Nh6 Ba5 Nc6 Bh3 f1N Qb4 Bf5 Nc1 e2 Qa3 e1N Qg3 Nd8 Ke5 Ne3 Ne2 Nd5 Nbc3 Nc7 d7+ Ke7 Rg1 h1N Qg4 Nf2 Ng3 Ne4 Nh1 Nc5 Rg2 N5e6 Rd2 Rc8 Rd6 Na8 Bb4 Rc6 Bc5 Rc7 Bf2 Rc8 Rad1 a1B R1d5 Rc6 Ra5 Rc8 Ra3 Rc7 Ne2 c3 Nd4 Rc4 Kd5 Bg7 Nc6+ Kf8 Ne7 Rf4 Ra2 Bd4 Ra3 Bc5 Ke5 Rf3 Bf1 Be4 Bb5 Nf5 Bc6 Nh4 Ba4 Rg3 Bb5 Nec7 Bc6 Nde6 Bb5 Bf5 d8Q+ Kg7 Qc8 Nd8 Qe6 Kf8 Qa2 Nce6 Bd7 Neg2 Be1 Bg1 Bf2 Ne1
r1k5/1q4P1/rb1nn3/1Np1bR2/1PPrRp2/2PbQN2/K2B4/1r1nR2N w - - 0 1 legal: proof: f4 e5 h4 exf4 b3 d5 e3 g5 Bc4 dxc4 bxc4 gxh4 a3 b5 Bb2 c6 Bc1 b4 axb4 Bg7 Kf1 Bh6 Ke1 Bf8 g4 Kd7 d4 a5 Kd2 f5 Kc3 h5 Kb3 h3 e4 c5 d5 a4+ Kb2 h4 d6 h2 g5 f3 g6 a3+ Ka2 f2 g7 f1R e5 f4 Qe1 h3 Qe4 Be7 Qd3 Qb6 Qh7 Bd8 Ne2 Rd1 Bb2 Nc6 Nbc3 Ra6 Qe4 Nd4 Qd5 Nf6 Ng3 Qb7 Qe4 Ne8 Qe3 Ne6 Nb5 Ba5 Bc1 Rd4 Bd2 Rg8 Rhe1 h1N Rad1 Nf2 Nh1 Kd8 d7 h2 Bc1 Nd6 Bd2 Ke7 d8N Kd7 Nc6 Rh8 Ka1 a2 Kb2 a1B+ Ka2 Re4 Ncd4 Rg8 Rb1 Nd1 Nf3 Rd4 Rg1 Kd8 Rg5 Bd7 Rc1 Kc8 Rf5 Bc6 Rb1 Be4 Rc1 Bd3 Rb1 Ng5 e6 Bc3 e7 Ne6 Rc1 Rd8 e8R Bb2 Ng3 h1R Rb1 Rg1 Nh1 Nc3+ Kb3 Ng5 Rd5 Kd7 Rf1 Rda8 Rc8 Re4 Rd4 Ne6 Rf8 Ba1 Rf5 Kc8 Rf2 Re1 Rf1 Rb1+ Ka3 Nd1 Ka2 Bb2 Re1 Bc3 Rdd5 Bf6 Rde5 Rd4 Re4 Be5 c3 Bb6+
2n1b3/1N1Pp1q1/pn1b2pn/1B5Q/3k1B2/1PN2r1R/P1bp2P1/KN2B1r1 w - - 0 1 legal: proof: e4 b5 c4 bxc4 f3 g6 f4 Nc6 f5 Nb8 fxg6 hxg6 b3 d5 Na3 Bf5 d3 Be6 Rb1 Bf5 Rb2 Be6 Rd2 Bf5 exd5 Bh3 d4 Bc8 Rd3 cxd3 Kd2 Kd7 Kc3 Kd6 Kb2 c5 h4 f5 h5 d2 h6 c4 h7 c3+ Kb1 a6 Be2 f4 Qc2 f3 Rh2 f2 Bf1 Nh6 Rh1 Nc6 Qd3 c2+ Kb2 Bf5 Qh3 Bg7 Qh5 Qf8 Ka1 Be5 Nb1 Qg7 Bb2 c1N Ne2 Bc2 Rh3 Nd3 Nec3 Nc5 Bb5 f1B Ba3 Rhc8 h8B Na7 Bb4 Bf4 Ba5 Rf8 Bb6 Nc8 Ba7 Nd7 Bc5+ Kc7 d6+ Kb7 d5 Ndb6 d7 Bd6 Bg1 Rf3 d8N+ Kc7 Nb7 Be2 Bd7 Bb5 Bf2 Rb8 Bg3 Rf1 Be1 Rg1 Bg4 Be8 Be2 Ba3 d6+ Kc6 d7 Bd6 Kb2 Qh7 Be5 Qg7 Ka1 Ra8 Na5+ Kc5 Bf4+ Kd4 Bf1 Ra7 Bd3 Rc7 Bb5 Rc5 Nb7 Rf5 Bfg3 Rf2 Bf4 Rf3
b3bn2/4PQNq/bb2np2/P1NR1P2/3r1PNQ/2k2rrp/1R2bb1K/1B6 w - - 0 1 illegal: No proof kernel
k3rq1N/bpP3p1/2r2Bb1/N1Q1K3/n1pr1P2/3R2PP/1R1QRr1b/1n2q3 w - - 0 1 illegal: No proof kernel
N3B3/3RBrPP/6b1/NbP1p2P/r1rb4/R3b3/1nKN1knq/4qn1B w - - 0 1 illegal: No possible last move
8/1P1rn1bq/1q1qPQ2/1nR2b1K/P7/NrBnNN1P/2n1Bp2/q1k3N1 w - - 0 1 legal: proof: f4 a5 g4 e5 c4 d5 cxd5 h5 gxh5 exf4 b3 a4 Qc2 a3 Qc3 Na6 Qb2 Nb8 Nf3 b5 Ng1 axb2 a4 b4 Ra3 bxa3 b4 Bb7 Kf2 Ba6 Ke1 Bc8 Kf2 Ke7 Kf3 Kd6 d4 g5 e4 c5 h6 f5 b5 g4+ Kg2 a2 h3 a1N h7 f3+ Kg3 f2 b6 c4 Nf3 f4+ Kg2 c3 Rg1 c2 Na3 b1Q Bd2 c1N Be2 g3 Bc3 Nd3 Rc1 Bg7 Ng1 Nc2 Kf3 Ne7 b7 Rg8 h8N g2 Ng6 Nbc6 Ne5 Na7 Ng4 Bf5 Ne3 Nb5 Nd1 Rc8 Ne3 Rc7 e5+ Kd7 e6+ Kd6 Bd2 Rd7 Bc3 Qa1 Rb1 Qf8 Rb4 Qf7 Rc4 Qg6 Rc5 Qh7 Bb4 Rc8 Bc3 Rc6 Bb4 Rb6 Bc3 Bg6 Kg4 f1Q Kg5 f3 Kg4 Qfd1 Kg5 Rc6 Kg4 Bf5+ Kg5 Kc7 d6+ Kb6 d5 Ka6 Bb2 Rb6 Bc3 Rc7 d7 f2 d8Q Rd7 Be5 Ka5 d6 Kb4 Bc3+ Kb3 Qf8 Bd4 Qh6 Bg7 Kh5 Qd2 Ba5 Kb2 Bb4 Rc7 d7 Kc1 d8N Rd7 Nc6 Qd1 Ne5 Qd4 Ngf3 g1Q Bc3 Qh2 Ng1 Qg3 Nef3 Qgd6 Bb4 Qe1 Ba5 Qec3 Bb4 Qa1 Be1 Na7 Bc3 Rb3 Re5 Q4b6 Rc5 Qg8 Qg5 Nb5 Qf6 Qh7+
Rrq3K1/1p3bPQ/P7/B4RNb/1R1n4/kP2nbq1/2PnbpR1/3N1q2 w - - 0 1 illegal: No extended proof kernel
3nq1BB/1pBP2r1/b3P1p1/3rqnP1/8/Rr1P1Nkb/rQ2R1B1/n1bK4 w - - 0 1 illegal: No proof kernel
8/1rb2PP1/2n1P1p1/1P2pBq1/P1Bq1prQ/Nn1KQRr1/k2n2Q1/8 w - - 0 1 legal: proof: d4 a5 e4 b5 c4 e5 dxe5 a4 e6 f6 e7 Kf7 e5 a3 e6+ Kg6 bxa3 b4 a4 Ba6 a5 Bb5 cxb5 Ra7 Qd4 Ra6 Qd1 Ra8 f4 Nh6 a4 Ng8 Ra2 Ra6 Re2 Ra8 Re5 fxe5 f5+ Kf6 Bh6 g6 Bf4 g5 g4 gxf4 g5+ Kg7 g6 Ra6 Nd2 Rd6 Ndf3 Ra6 Nh4 Kf6 g7 Ra8 Ng6 hxg6 Ke2 c5 e8B d5 h4 c4 h5 c3 a6 d4 a7 c2 h6 c1N+ Kd2 b3 h7 b2 Qc2 b1R Qd3 Bd6 Qe2 d3 Qf3 Nc6 Rh4 Bc7 Qe4 Nb3+ Kc3 d2 Nf3 d1Q Rh3 Ke7 f6+ Kd6 f7 Kc5 Bc4 Rb8 a8Q Nf6 Nd4 Rb7 Nc2 Qe7 Na3 Qd4+ Kc2 Kb4 Rf3 Rg1 Qe3 Rg4 Bd7 Rd8 h8Q Ne4 Qh4 Qg5 Bc8 Ned2 Bd7 Nb8 Bc6 Rc8 B6d5 Nc6 Be4 Rd8 Bf5 Rh8 Qh1 Rh3 Qh8 Rhg3 Q8h4 Qb2+ Kd3 Qd4+ Ke2 Qgd8 Qg2 Qg5 Bfd3 Kc3 Be4+ Kb2 Bf5 Qc5 Kd3 Ka2 Qe1 Qa7 Qe3 Qd4+
QBRb4/q2n1BpR/1kp1b1NB/4p2Q/2Q3NN/1K5r/2R2nbr/6Nn w - - 0 1 legal: proof: b4 a5 g4 h5 c4 hxg4 e4 f5 exf5 d5 cxd5 b6 a4 b5 axb5 axb4 h4 Kd7 d4 e5 Kd2 b3 Kc3 g3 f4 b2 d6 g2 b6 Kc6 b7 Rh6 h5 Qh4 d5+ Kc5 f6 c6 f7 Ra5 d7 Rb5 d8R Rg6 h6 Bd7 f5 Re6 f6 Qg4 h7 Re8 h8N Kb6 d6 Rb4 Ra2 Bc8 d7 Rf4 Rh7 Bb4+ Kb3 Re4 f8Q Re6 f7 Ba5 Na3 b1B Nc2 Nh6 Bc4 Nf5 Ne3 Ng3 Qg8 Nh1 f8N Rh6 Nhg6 Rh2 Nh4 Qe6 Ng4 Qe7 Rc2 Re3+ Ka4 Qc5 Bf7 Reh3 Bh6 Ba2 Qe2 Bd5 Nfg6 Bf3 Kb3 Be4+ Ngf3 g1N Re8 Qe7 d8Q+ Qc7 Qc4 Be6 Qg5 Nd7 b8B Qa7 Qh5 B4d5 Rc8 Be4 Kb2 B4d5 Nd4 Bg2 Ndf3 Rg3 Qe8 Nh3 Ng1 N3f2 Qf8 Rgh3 Qa3 Bb4 Qa1 Be7 Qaa4 Qb7 Qa8 Bd8 Ka2 Qa7+ Kb2 Bf3 Kb3 Bg2+
2bbrB2/R3QBRb/1nK3nq/Q1NNr3/4n1pQ/q2B1B2/3r1bR1/kN6 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 c5 d4 cxd4 a4 e5 axb5 exf4 Kf2 Ke7 Kf3 Kf6 Ke4 g5 Kd5 a5 b4 d6 c4 d3 e4 f3 h4 a4 e5+ Kf5 h6 g4 h7 d2 c5 a3 h5 f2 b6 a2 e6 Qh4 b5 Ra5 c6 Be7 c7 Nd7 b7 Nb6+ Kc6 Ke4 b8R Kd4 h6 f5 Qe2 d1R Ba3 f4 Nh3 f3 Rh2 d5 Rb7 Bd8 e7 Rd2 e8B Qe7 Bg2 f1N Bf7 f2 Bf3 Ng3 Rg2 f1Q Nf4 Qh1 Ra7 Qe3 Bf8 Qa3 Qe7 Ne4 Rb7 Kc4 Ra7 Kb3 Rb7 Na4 b6 Kb2 Ra7 d4 b7 d3 b8N Nb6 Na6 Rf5 Nc5 Re5 Nd5 Qh4 Nbc3 Qg5 Rc1 a1B Nb1 Ka2 Rc4 Bd4 Rca4 Bf5 c8B Ka1 Ba6 Bf2 Rb7 Bc8 Bb5 Ngf6 Raa7 Nh5 Ba6 Rg8 h8Q Nf4 h7 Ng6 Qhf6 Qe3 h8Q Qh6 Qh7 Rh8 Qf5 Rg8 Bg7 Re8 Bf8 Re2 Qh8 d2 Bd3 d1B Qhf6 Bb3 Qh4 Bc2 Qfg5 Nc4 Qd2 Nb6 Qa5 Rd2 Qeg5 Nf6 Be6 Bg3 Bc4 Nf4 Rg7 Bh7 Bd3 Ng6 Bf7 Ne4 Qe7 Bf2
4N3/3kbb2/NQRrrR1p/r1pR1n1K/3nN3/2RBq1B1/r1B2b1B/2B3b1 w - - 0 1 legal: proof: e4 b5 c4 f5 a4 fxe4 axb5 d5 cxd5 g5 h4 gxh4 Ke2 c5 d4 e5 f4 a5 b4 h6 g4 a4 b6 h3 b7 h2 g5 e3 Kf3 a3 d6 a2 d5 e2 b5 e1B b6 Be7 f5 e4+ Kg4 e3 d7+ Kf8 d6 e2 f6 Bg3 f7 e1B g6 Rh7 Na3 Bc3 Bd3 Bf4 Nh3 Bcd2 Qb3 Bde3 Nc4 Rg7 Ng5 Ra6 Kh5 Bf6 Ne4 Qe8 d8R Ra5 d7 Ke7 f8R Bh4 Ncd6 Bhf2 Rf6 Rf7 g7 Nc6 b8N Bg5 b7 Nd4 Na6 Bgh4 Re1 h1R b8B Rh3 Rb1 a1R Qb6 R1a2 Rb3 Bg1 Bc7 Bef2 Rc3 Re3 Rd1 Bb7 Rc8 Bd5 d8B+ Kd7 Bc2 Ne7 g8B Nef5 Bh7 Qe5 Ne8 Rd3 Bd6 Re7 Rc6 Bg8 B8c7 Re6 Rd2 Qg3 Be5 Qe3 Bh2 Bg5 Bcg3 Bh4 Rf8 Be7 Rf6 Ne2 Rd1 Rdd6 Rd5 Ned4 Nd2 Nh4 Bhd3 Nhf5 Ne4 Bf7+
n3nQ2/1rk3b1/q1r1R2r/Nb4KB/B1bqqR2/R2BrR1B/1Q6/N4R2 w - - 0 1 legal: proof: b4 a5 h4 g5 hxg5 d5 a4 b5 f4 e5 c4 exf4 cxd5 Bd6 Ba3 Bh3 axb5 Bf8 b6 Bg4 b5 Bc8 Bb4 axb4 Kf2 Kd7 Kf3 h5 g4 c5 e4 f5 d4 b3 e5 b2 g6 h4 e6+ Kd6 g5 h3 b7 c4 g7 h2 b6 c3 g6 c2 e7 c1Q e8B Qh4 Ba4 Ne7 g8B Qc4 g7 Qg5 Ne2 Rh7 Qb3 Rh4 Na3 b1R Qb2 Ra7 Nc1 Rh6 Be6 Rf6 g8B Ra8 Bgf7 Bg7 Nc2 Qc5 Nb3 Bd7 Ra3 Na6 b8Q+ Nc7 b7 Qg6 Bd3 Bb5 Nca1 Ng8 Rf1 h1R Na5 Rh6 Qe8 Rc8 b8R Na8 Qf8+ Kc7 Rb6 Re8 Rd6 Qh7 Bh5 Rfg6 Bd7 Nf6 Re6 Re7 Bc8 Ne8 d6+ Kb8 d5 Qd4 d7 Kc7 Re5 Rc6 d8R Re1 Re6 Re3+ Kg2 f3+ Kg3 f4+ Kh4 f2 Kg5 f3 d6+ Kb6 d7 Kc7 N1b3 Qhe4 Na1 Nd6 Re8 Rf7 R8e7 Ne8 Rf6 Bc4 Ree6 Re7 d8R Rd7 Rc1 f1Q Rf4 f2 Rb1 Rf7 Rd5 Qe2 Rdf5 f1B Rc1 Qh2 Rf3 Qhd6 R5f4 Be2 Rcf1 Bb5 Bdc2 Bec4 Bd3 Re7 Ref6 Rf7 Bh3 Qde6 Rg6 Qc8 Re6 Qa6 Nc2 Kc8 Na1 Rb7 Bf5 Kd7 Bh3 Kc7
1N1R1R2/B1B3qQ/1qBNK3/1np5/2b3pR/3nBQq1/p1Rr1bR1/n3k1r1 w - - 0 1 illegal: No possible last move, all moves rejected
5Rrq/k3B1b1/2R2K2/2n1N1Qq/1NnNpRQ1/Bb2bqBN/2B1b3/n7 w - - 0 1 illegal: No possible last move, all moves rejected
qKQ2r1b/4Bk2/2RR1b2/r1b2Rn1/QQr5/Nr1N1B2/3q3B/BQ2b1nb w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 d5 cxd5 exf4 Kf2 a5 b4 c5 e4 f5 h4 g5 d4 c4 e5 a4 d6 c3 h5 f3 Kg3 c2 e6 a3 h6 f2 b6 a2 e7 Ra6 b5 Qd7 h7 Kf7 d5 Nh6 b7 Ra5 b6 Bg7 Rh5 Rf8 h8Q Nc6 b8B Ne5 b7 Bf6 Be2 f1Q Nh3 Nf3 Nf2 Ng1 Bf3 Qa6 Bb2 c1R Nd3 Rc4 Na3 Qd8 Rc1 a1B d7 f4+ Kg2 g3 d6 g4 Rf5 Rb4 Rc6 Rc4 Be5 Bc3 Bc7 Be1 b8Q Bb7 Ba1 Ba8 Qdb1 Bb7 Kh1 g2+ Kh2 Ba8 Q8b4 Bb7 Be2 f3 Bb8 f2 Bf3 f1R Bc7 Kg6 e8Q+ Nf7 Qh4 Rf2 Kg3 Kg7 Qh3 Ng5 Qe4 Kg6 Kf4 g3 Qg4 Kf7 Bb8 Qc7 d8B Rb2 Be7 Qd8 d7 Rb3 Bbe5 Qdb6 d8R Qd4 Qh3 Qc3 Rdd6 Qd2+ Kg4 Ne2 Qh8 g1B Qd4 g2 Bh2 Bgf2 Qe4 g1B Qa4 Rc1 Qeb4 Bc5 Qh3 Bgd4 Qh8 Qd1 Qh3 Ng1 Kf4 Rc4 Qg4 N5h3+ Ke4 Qd2 Kd5 Ke8 Qg8 Ng5 Qe6 Ba8 Qc8+ Kf7 Re6 Ba7+ Kd6 Bac5+ Kc7 Bc3 Kb8 Bb2 Bg4 Bb7 Rcd6 Bh1 Bf3 Bbd4 Rc6 Be5+ Red6 Bc3 Re5 Bh8 Red5 Bcf6 Rf5 Qa8+
1k3r2/1q1r3b/1q2Q1B1/2nQNp1q/Q2n2R1/2bRB1bp/B1B2RN1/2KR2n1 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 d4 Kd7 Kd2 h5 e4 f5 b4 a5 g4 c5 b6 a4 b7 Kc7 d6+ Kb6 b5 Ka7 d7 f3 d5 c4 d6 a3 e5 a2 g5 f2 b6+ Ka6 g6 h3 g7 h2 e6 h4 e7 h3 e8B Rh7 Bd3 f1Q Nc3 Qe7 d8Q Nd7 b8Q Qf7 b7 Nc5 d7 Bd6 Nce2 Qf2 Bc2 Bg3 Qd6+ Ka7 b8R Qh5 Rb2 Ne7 g8B Nc6 Qe6 Nd4 Nf3 Rf7 Rf1 h1Q Ne5 Qb7 Rg1 Kb8 Qh4 Rh7 d8R Rd7 Rg2 Qg1 Bg6 Qf2 Rab1 a1B Ra2 Qg1 Nf4 Bb2 Rf2 Ba1 Ng2 c3+ Ke3 Bb2 Ra4 Ba1 Qe4 Bb2 Q4d5 Ba1 Be4 c2 Rb3 Bb2 Rd3 Bc3 Bd2 c1N Rc4 Nc6 Qa4 Ne2 Bc1 Ncd4 Rd1 Qf1 Bc2 Ng1 Rb4 Qfb5 Bd2 Ndf3 Rg4 Q5b6 Bc1 Nd4 Rd3 Ba1 Kd2 Bc3+ Kd1 Re7 Rd6 Bd7 Bh6 Be8 Be3 Rd7 Kc1 Bf7 B8h7 Bg8 Bf7 Q7c7 Bhg6 Qcb7 Qdb3 Bf4 Rdd2 Bg3 Rd1 Nc6 Qe7 Bh7 R6d3 Kc8 Bd5 Nd4 Qe6 Kc7 Qbc4 Rf8 Qcb5 Kb8 Ba2 Ne4 Qbd5 Nc5
1BBk1KQN/3N2r1/7B/2q2nrp/Qr3p2/pB1nb3/N1RR1Q1q/3Q1bq1 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 h5 Kf3 f5 g4 c5 d4 a5 b4 a4 e4 h3 e5 h2 e6 c4 d6 c3 g5 c2 e7 a3 d7+ Kf7 e8Q+ Kg7 b6 Ra4 d5 Bc5 b5 Bb7 g6 Kf6 g7 Ra8 Nc3 Bb4 Bh3 Bc6 b7 Qc7 d8N Qd6 b6 Ra5 Nf7 Nh6 g8B Ra8 Ra2 Na6 b8B Nc5 b7 Rh7 Nh8 Nf7 Qee2 Bb5 Qf2 Qc7 d6 Ra5 d7 Nh6 Bb3 Rg7 d8Q+ Qe7 Be3 c1Q Rd2 Bf1 Qd7 Nd3 Qa4 Qc5 Na2 Ke7 Rc2 Bg2+ Ke2 Qc7 Qd2 Qc4 Bg4 Rg8 Qde1 Kd8 Qff1 Bc5 Nf3 Rg6 Rg1 h1Q Bd6 Qh2 Ne5 Qb1 Kd2 f3 Qfe2 Ba7 b8Q+ Qc8 Rh1 Nf7 Bh6 Rg7 Qc1 Bc5 Kc3 Be3+ Bc7+ Ke7 Kc4 Rb5 Rd1 f2 Rdd2 f1R Qf2 Rg1 Qcf1 f4 Q1e1 Qf5 Qg8 Bh3 Bb8 Rb4+ Kd5 Nd6 Qee2 Qf8 Bc8 Kd8 Nd7 Nf5 Ke6 R1g5 Qef3 Qbg1 Qd1 Rh7 Qg7 Qc5 Kf7 Bf1 Kg8 Qd5+ Kf8 Qc6 Qf7 Rhg7 Qg8 Qc5+
1N2B3/1R2q1nN/3rR1Kp/Q7/1bB3N1/rbpb2BB/p3n2R/b1kN1R1b w - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 d5 c4 dxc4 a4 e5 axb5 exf4 Kf2 Ke7 Kf3 Kd6 Ke4 Kc5 b4+ Kd6 d4 c5 g4 a5 d5 h6 b6 c3 g6 c2 b7 f3 g5 f6 g7 f2 b5 c4 b6 Kc5 d6 Kb4 g6 Kb3 d7 a4 Kf5 a3 e4 a2 e5 Be7 e6 Bb4 e7 Ra6 e8B Ra3 Bh3 f1B Qd2 Qe7 Nc3 Bg2 Nd1 Nc6 Rh2 Bh1 b8N c3 b7 Rh7 Nf3 Rh8 Qg5 Nd4+ Kg4 f5+ Kh5 f4 d8R Bf5 Rd6 Be6 Ne5 f3 Bf4 c1B Bg3 f2 Ng4 Kc2 Qa5 Bb3 Re6 Ne2 Rb1 f1B Ra1 Qf6 Rb1 Ne7 g8N Bb2 g7 Qf8 N8f6 Ba1 g8B Nf5 Nh7 Qe7 Kg6 Kd2 Ra6 Kc2 Bc4 Kd2 Re6 Rf8 Beb5 Rd8 Be8 Rd6 Na6 Rd4 b8R Rd6 Rb7 Kc2 Nb8 Kd2 Rb2+ Kc1 Rf2 Bfg2 Rf1 Be4 Rd2 Bd3 Rb2 Ng1 Rbf2 Ne2 Rh2 Ng7+
1r1Q1br1/1Nr3N1/4rq2/qPN3RB/b2Q1BK1/n2b2q1/Nr2nNk1/1Q2R3 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Kd7 Kf3 Kd6 e4 Ke5 g4 a5 b4 f5 b6 c5 d6 h5 d3 c4 b7 a4 g5 a3 g6 a2 d7 h3 g7 c3 Rh2 c2 Bg2 h4 Qe1 Nc6 b8Q+ Qc7 d8N Na7 Qe3 Nb5 Qe1 Nh6 g8N Na3 Rh1 h2 Bd2 c1R Qg3 h3 Be3 Bd7 Qf2 Ba4 Nf6 Rg8 Nc3 Rc2 Qd2 Rb2 Re1 a1Q Na2 Qd6 Qb6 Rb8 Nb7 Qc7 b5 Qg7 Qb4 Qg5 Bd2 Qg3+ Ke2 f3+ Ke3 f2+ Bf3 f1Q Q6d4+ Ke6 e5 f4+ Ke4 Nf5 Bh5 f3 Nd7 f2 Bf4 Qg5 Kf3 Ng3 Qb3+ Kf5 e6 Ne2 e7 Qf6 e8N Qg2+ Ke3 f1B Ndc5 Qgg7 Kf3 Qc7 Qd1 Qa5 Qc2 Qd1 Qb1 Qb3 Bc7 Kg5+ Bf4+ Kh4 Ng7 Qbc3 Qd8 Qe5 d4 Qeg5 d5 Qg3+ Ke4 Nc1 d6 Bd3+ Kd5 Ne2 d7 Nc4 Qb6 Na3 d8Q Qg6 Bc1 Kg3 Bf4+ Kg2 Qbd6 Qg3 Qe5 Qh6 Qd4 Qhb6 Ke5 Qbg6 Nf3 Qgb6 Rhf1 h1R Ng5 h2 Nge4 Rg1 Kf5 h1R Rf3 Rh4 Rff1 Rg4 Rf3 Rg6 Rff1 Re6 Rf3 Qh2 Kg4 Qd6 Re3 Qe7 Nf2 Qf6 Re5 Rh1 Bg6 Qg1 Rg5 Rh7 Bh5 Qh2 Nf5 Rc7 Ng7 Qg3+
q6K/b4QB1/Nr3N1n/b2r2RP/q3bNb1/1NbQNk1n/3pR3/3rBB2 w - - 0 1 legal: proof: e4 b5 d4 f5 exf5 c5 g4 cxd4 a4 h5 axb5 hxg4 Ke2 Kf7 Kd3 Kf6 Ke4 g5 h4 e5 f4 a5 b4 a4 c4 g3 h5 d3 b6 d2 b7 g4 c5 a3 b5 g2 b6 g3 c6 a2 c7 Bb4 Qc2 d1B Nd2 Nh6 Nh3 g1R Qd3 g2 Rh2 Bc3 Nb3 Bg4 Bd2 Na6 b8N Nb4 b7 Ra5 Na6 Nd5 b8N Bb7 c8N d6 Rc1 a1Q Nb6 Qa4+ Nc4 Rg8 Be1 Rg6 Ra1 Rh1 Rb1 g1B Re2 Ba7 Rbb2 Rb5 Rg2 Rg5 Rbe2 Rb6 Rg3 Qc8 Rgg2 Bc6 Rg3 Qb7 Rgg2 Qa8 Nd7+ Kf7 f6 Ke6 f7 Bb7 Ndb8 Kf6 f5 Nf4+ Ke3 e4 f8B Ba5 Kd4 e3 Rg3 d5 Bg7+ Kf7 Ke5 d4 Rgg2 Be4 Nd7 Rg1 Nf6 Bc3 Rb2 e2 Ne3 Ke7 Bh4 e1B Rbe2 Ba5 Bf2 Bec3 Be1 Nd5 Nf4 Rh1 Ne6 Nf4 Rg1 Nh3 Nf4 Kd8 Rg3 Kc8 Rgg2 Kb7 Rg3 Kc6 Ke6 Qb8 Ke7 Qb7+ Kf8 Kd6 Rgg2 Ke5 Rg1 Nf7 Kg8 Nh6+ Kh8 Qd5 Qb1 d3 Rg3 d2 Qd3 Rg1 Ng8+ Kd6 f6 Ke5 Rgg2 Rf5 Rg3 Qa8 f7+ Rff6 f8Q Rb5 Qf7 Rd5 Bf8 Rb6 Nf6 Bgf3 Rg8 Bg4 Bg7 Rh1 Ne6 Rg1 Nec5 Kf4 Ne6+ Kf3 Nf4 Rh1 Bf8 Bgf5 Bg3 Ba1 Rg5 Bc8 Bg7 B1c3 Bh4 Nf2 Bh3 Rd1 Bf1 Nh3 Be1 Bg4+
2B1kqRB/3R3q/1BQQr1r1/1R1N2pr/2r4n/Nb4nP/r4bKn/R2R4 w - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 d5 cxd5 exf4 Kf2 f5 e4 c5 d4 a5 b4 g3+ Kf3 g2 h3 a4 d6 a3 e5 a2 d5 c4 e6 c3 e7 c2 b6 Qd7 b7 Ra6 b5 Rh5 b6 Nh6 Bd2 c1R Bc3 Nc6 b8Q Nd4+ Kf2 f3 b7 f4 Ne2 g1R Qa4 Rg6 Qc6 Ndf5 Na3 Nh4 Bd4 Rc5 Nc3 N6f5 Bg2 Ng3 Rhd1 Re6 Qbc7 g5 b8R Rc4 Bh8 Bg7 Rb5 Bf6 Kg1 f2+ Kh2 f1Q Qd8+ Kf7 e8R f3 Rg8 f2 Qdb6 Qb7 d7 Bd4 d8B Rg6 d6 Be6 d7 Be3 Rac1 a1R Nd5 Ra2 Qbc5 Qa7 Bb6 Qb7 d8R Qe7 Q6d6 Qf8 Ra1 Qd3 Rd7+ Ke8 Qcc7 Bc5 Ne3 f1N+ Kg1 Bf7 Bb7 Nh2 Bc8 Re6 Qcc6 Qh7 Rd2 Bg6 Rdd1 Bc2 Bc7 Ba7 Bb6 Bb3 Nd5 Rae2 Nb1 Raa2 Na3 Rg6 Qf4 Re7 Qfd6 Ree6 Be3 Bc5 Bf2 Bb4 Bb6 Be1 Rdb1 Nhf5 Rd1 Bf2+ Kg2 Nh4+
1N1r2b1/b1RB1Qn1/2N5/nkqP1qQ1/3q4/R2RB3/2Rqrp1b/nNRK4 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 b4 Kd7 e4 c5 d4 h5 g4 a5 g5 f5 d6 h3 g6 c4 b6 Kc6 b7 f3 e5 f4 e6 f2+ Ke2 c3 d7 h2 e7 c2 e8R a4 g7 a3 Nd2 a2 Re7 h4 Bg2+ f3+ Ke3 f1Q Nb3 h3 Kd2 Kb5 Na5 Nf6 g8Q Ne8 Ne2 Nc6 b8N Ng7 Qf7 f2 Rg1 h1Q d5 h2 Bh3 Qb6 d8R Qc5 Rc7 Qe4 Bd7 h1Q Rg3 Rh3 Rd3 Qhf3 Ra3 Q1g2 Qg1 Qff5 Re8 Qh1 Qg5 Re3 Re6 Qh6 Nc3+ Kb6 b5 Bd6 Re8 Bh2 Nb1 Qed4+ Rd3 Re1 Re4 Re3 Rf4 Re8 Rf3 Rd8 Ke2 Ra7 Bd2 c1B Kd1 Ra8 Be3 Bd2 Nb7 Na5 Ra3 Re8 Nd8 Re4 Ndc6 Re7 Bf4 Re2 Rfd3 Bc3 Be3 Bb4 Be8 Be6 Bd7 Bc3 Nd2 Bb2 Rc1 a1N Nb1 Bc3 Na6 Rd8 Nab8 Qcc4 Rc2 Kc5 b6 Kb5 b7 Qcc5 Qf8 Bg8 Qf7 Qdg4 Na6 Qgd4 b8R+ Qb6 Rbc8 Qbc5 Bc1 Bd2 Nab8 Bdf4 Be3 Bfg3 Ra7 Bc7 Rb7+ Bb6 Rbc7 Ba7 Rc1 Qhd6 Ne5+ Qcc6 Rb7+ Bb6 Ra7 Q6b4 Rb7 Qbc3 Ra7 Kc5 Rb7 Ba7 Rb2 Qc7 Rbc2 Qc6 Rc7 Kb5 Bc8 Qcb6 Nec6 Qbc5 Bd7 Qd2+
2n4n/Qq1R1Rq1/1PB1Bb1N/2Q2bNb/2b4Q/B1nr4/1Br3Bp/K2k3q w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 e4 Kd7 b4 Kd6 g4 Ke5 g5 Kd4 d6 h5 g6 f5 g7 a5 b6 c5 e5 f3 e6 f2+ Ke2 a4 e7 h3 e8B f4 d7 a3 b5 a2 d3 f3+ Kd2 h4 Kc2 c4 Kb2 Nh6 g8B Qc7 d8B Be7 b7 c3+ Kb3 c2 Kb2 Nc6 b8Q Nf7 b6 Na7 Na3 Qb7 Bc6 Be6 Rh2 Nc8 Nc4 Ra3 Ne5 Rh6 Qe2 Nh8 Qa7 Rg6 Nf7 Rg2 Qe1 Bg4 Rb1 Bh5 Qea5 Rc3 Nh6 Bg5 Bf4 c1N Be5+ Ke3 d4 Kd2 d5 Ne2 d6 Be7 d7 Rg3 Bg2 f1B Rh1 f2 Rc1 Re3 Rc2+ Kd1 Bg7 Bg5 Be7 Rc4 Ba3 Be7 Rc3 a1Q+ Kb3 Rf3 Qc5 Bd8 Re3 Rc2 Bc4 Be7 d8Q+ Qd4 Be6 Qdd7 Bgb2 Nc3 Qb8 Bd3 Qa7 f1B Re4 Bg5 Rd4 Qg7 Rd7 Rg3 Nf3 Be7 Ne1 Bfe2 Rf1 Beg4 Rf8 Bf5 Rf7 Rf3 Qc7 Bf6 Qh2 Rg3 Rc7 Ba6 Rcd7+ Rd3 Nf3 Bb5 Qf4 Ba6 Ng5 Bc4+ Kb4 h2 Qff2 h1Q Qfd4 h3 Qh4 Ba6 Kb3 Ne2+ Ka2 h2 Kb1 Bc4 Ka1 Nc3
5BbN/1B1r1pQQ/rk6/r4bq1/4BPRR/1qNn2R1/n1rKB2B/6qq w - - 0 1 legal: proof: d4 c5 h4 cxd4 a4 b5 axb5 g5 Bd2 gxh4 Bg5 Nf6 Bc1 Ng8 Kd2 d5 e3 d3 Be2 Bg7 Bf1 Bd4 Ra2 Bc5 Kc3 d2 Ra1 d4+ Kc4 d3 Kc3 Bd4+ exd4 Be6 Ra3 Bg4 Ra1 Bc8 g4 Kd7 b4 Kc7 d5 h5 d6+ Kb6 g5 a5 g6 e5 d7 a4 g7 a3 Nh3 a2 Qg4 d1R Bh6 d2 Nf4 h3 Ng6 h4 Be2 Nf6 g8B e4 Bf8 e3 Bh7 Rg8 Nh8 h2 Qg7 h3 Be4 Na6 f3 Qe7 d8R Nh5 Rd3 Bf5 Rg1 h1R Rg4 h2 Rd4 Rhe1 Kd3 h1Q c4 Qf6 Nc3 Qg5 Kc2 Nf4 c5+ Kc7 c6 Nd3 Qh7 Kb6 c7 Rg6 c8B Rd6 Rb1 a1Q Rb3 Qa3 Bcb7 Ra1 Rh4 Rd7 Qg7 Bh7 Rc4 Bg8 Qh7 Ka7 b6+ Kb8 b5 Qhg2 Bf1 Q5g4 Na4 e2 Bbc6 Qg5 b7 Kc7 Bg6 Nc1 Rcg4 Qh1 Bge4 Nc5 Rc3 Ra6 b8B+ Kc8 Re3 N5d3 Bh2 Kd8 f4 Kc7 Reg3 Qb4 Nc3 R1a5 Na4 Na2 Ba8 Ra1 Bad5 e1Q Be2 Qeg1 b6+ Kd8 b7 Kc7 Bb3 Qbb5 Bc4 Qbd5 b8Q+ Kc6 Qe5 Rc1+ Kb3 Kb7 Nc3 Kb6 Qeg7 Nb2 Bc2 d1B Bf3 Qe6 Bb7 Bf3 Bb1 Be4 Bd3 Bf5 Bde4 Qee7 Bf1 Nd3 Be2 Qe6+ Bed5 Rd1 Kc2 Rf1 Bdc6 Qb3+ Kd2 Rc1 Be4 Rc2#
R1rNBB2/1R1nN3/R3p1qr/3NqQP1/3k4/KpR1b3/bQ3pp1/R2n2r1 w - - 0 1 illegal: No proof kernel
Qq6/1N1NrP2/Rbr2B2/nbB1Q3/b1bB3R/Nnb1n3/5nK1/k2NQ3 w - - 0 1 legal: proof: c4 b5 a4 d5 axb5 g5 cxd5 f5 e4 Na6 exf5 Nb8 h4 gxh4 b4 a6 b6 Be6 b7 Bf7 b5 Be6 b6 Bc8 Bb5+ axb5 Kf1 Kd7 f4 Kd6 d4 e5 g4 h5 f6 c5 f7 b4 f5 b3 g5 e4 f6 h3 g6 e3 g7 e2+ Kf2 e1B+ Kf3 h4 Ra3 c4 Ra5 b2 Ra2 c3 Ra5 h2 Bh6 c2 Be3 c1N Qb3 h3 Ra4 Ra7 Qc3 Nc6 b8N Nge7 g8Q Nf5 b7 Be6 Na3 b1B Ra6 Bc2 Ne2 Nb3 Nd7 Rh6 b8Q+ Qc7 Qa8 Qb8 Qh8 Rb7 Qa1 Bc3 Qe1 Ra7 Bg1 Ne3 Kg3 Be7 f8B Bd3 f7 Bb5 Bg7 Bd8 Qe8 Bb6 Kf3 Ba1 Nc3 Nca5 Nd1 Bc3 Qh8 Bg4+ Kg3 Bge2 Bf2 Bec4 Kf3 Ke7 d6+ Ke6 d5+ Kf5 Kg3 Ke4 Bd4 Kd3 Qe5 Rc7 Bg1 Rc6 Bf2 Re6 Bc5 Re7 Kf3 Nf5 Bfd4 Ba4 Nf8 Bab5 d7 Ne3 d8B Ba4 d6 Bcb5 Rf1 h1N d7 Nf2 Rh1 h2 Kg3 Re8 Bf6 Re7 d8N Bc4 Nb1 Kc2 Nd7 Bab5 Na3+ Kc1 Rf1 h1B Nb7 Bhd5 Rh1 Ba4 Nf8 Bcb5 Rh4 Be6 Nd7 Bec4 Nc2 Kb1 Na3+ Ka1 Kh2 Neg4+ Kg2 Ne3+
5rn1/1BqQR1Nq/2q1K3/1Rb4r/1bQQB1k1/n1Pp1Nb1/8/2BNr2Q w - - 0 1 legal: proof: g4 c5 e4 f5 h4 b5 a4 g5 axb5 Bb7 d4 cxd4 f4 Bd5 fxg5 f4 h5 Be6 h6 Bf5 exf5 Bxh6 Bc4 Bg7 Bf1 Bf8 Ke2 Kf7 Kf3 e5 Ke4 h5 Kd5 a5 b4 h4 f6 Kg6 b6 d3 b7 f3 b5 f2 b6 e4 f7 a4 Nc3 h3 Nf3 e3 Rb1 e2 Rb5 e1B Bg2 Na6 b8Q f1R b7 h2 Qc7 d2 b8Q a3 Qba7 a2 Qd4 a1B Qca7 d6 Ke6 d5 Qd7 Bg3 Qe1 Rb8 Nd1 Qc7 c3 Bb2 Rg1 Bb4 Bh1 Bc5 Rg2 Rh6 Re2 Rf8 Bg2 h1Q Re5 Kg7+ g6 Nb4 g5 Ba3 Qee4 Re1 Qh4 Qg1 Qh1 Qh2 Re3+ Be5 Re2 Rh5 Re4 Nc2 Re3 Kh8 g7+ Kh7 g6+ Kh6 Re2 Bg3 Re4 Rc8 f8N Bab4 Re2 Na3 Re3 Ne7 g8Q Ra8 Qf7 Ng8 g7 Rc8 Bh3 Qg2 Bf5 Rb8 Be4 Rd8 Nh7 Rf8 Nhg5 Qh2 Qf4 Qh4 Qc4 d4 Qe5 d3 Qed4 Ne7 g8B Qh2 Bgh7 Ng8 Bb7 Qg2 Nb2 d1Q Bhe4 Qa4 Nd1 Qh2 Nh7 Qh4 Nf6 Qa8 Ne8 Qac8 Ng1 Kg5 Ng7 Kg4 Re2 Rg5 Nf3 Qh7 Rh2 Qa8 Rh6 Qa4 Rf6 Rd5 Rf7 Rh5 Re7 Bgd6 Ra5 Qac6 Rb5 Bg3+
n4rr1/Q3P2K/BqN5/B1nnp1R1/2Q1b3/B1q2k2/Q1NQ3p/1b2Rb1N w - - 0 1 legal: proof: c4 d5 cxd5 b5 f4 g5 a4 Nc6 axb5 Kd7 h4 gxh4 f5 Nd4 f6 Nxe2 Ra2 e6 Ra1 Be7 fxe7 Qf8 Nf3 Qe8 Ng1 Qd8 Kf2 Kd6 Kf3 Ke5 Kg4 Ke4 Kg5 c5 g4 h5 d4 f5 Kg6 a5 b4 e5 b6 f4 b7 f3 b8Q a4 d6 h3 d7 c4 g5 f2 b5 c3 d5 c2 d6 h4 b6 h2 b7 h3 Ba3 c1Q Qd5+ Kf4 Qa2 Nd4 Qa7 Qe1 b8N Ne6 Nc6 Qc3 Ne2+ Kf3 Rg1 h1B Ng3 h2 Ba6 Qb6 d8Q f1B d7 Nf6 Qc4 Bhg2 Nh1 Nd5 Qa2 Rf8 Kh7 Nec7 g6 Rb8 g7 Na8 g8Q Bb7 Qe6 Bh3 Rg5 Bf5+ Qg6 Be4 Qc8 Rg8 d8B Bed3 Qd7 Bc2 Bc7 Rbf8 Qd6 Be4 Qb4 Bc8 Qbc4 Bcf5 Qd2 Qbb4 Ba5 Qb6 Bc5 a3 Bd6 a2 Na3 Nac7 Re1 a1N Nc2 Nb3 Bdb4 Nc5 Ba3 Bed3 Qa2 Bfe4 Qc4 Rf5 Qe6 Na8 N2b4 Bb1 Nc2 Qcb3 Qf7 Qc3 Qa2 Nb4 Qfb3 Nd5 Qc4 Rff8+
1q3n2/q6R/4N1r1/2nRq1Q1/b2NBnqQ/4bB2/krRP3K/N2qbBB1 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Ke7 e4 Kd6 g4 Kc5 Kg2 Kb4 b6 h5 b7 c5 g5 a5 e5 f5 b3 a4 e6 c4 g6 f3+ Kh3 c3 g7 f2 e7 c2 e8B a3 d6 a2 d7 f4 Ba6 f1Q+ Kh2 f3 Qe1 h3 Bc4 f2 Bb2 c1N Bg6 h4 Be5 Bd6 Nf3 Nf6 g8B Nh5 B6h7 Nd3 Rg1 Nhf4 Bgd5 Rg8 Rg6 Qe2 Bg7 f1Q+ Qf2 Nc5 Bd4 Qe5 Rg7 Qfe2 Na3 Qde8 d8Q Nbd7 b8N Nf8 Bhe4 Bd7 Rh7 Rg6 Ng5 Ba4 Ne6 Qg4 Rc1 a1B Bf1 Bc3 Be3 Bd4 Qg5 Ra5 Rc2 Rb5 Qg3 Qd8 Bf2 Be3 Bg1 Qd7 Bf3 Qa7 Bde4 Rb6 Nb5 Be7 Nbd4 Ka3 b4 Bd6 b5 Bc7 Rc4 Ka2 Nbc6 Rb8 b6 Bd8 Kh1 h2 b7 Bb6 Nc2 Bf2 Ng7 Be1 Rd4 Nce6 Rc4 Be3 Na1 Nc5 Rc2+ Qb2 Ne5 N4e6 Bc4+ Nb3 Bg2 B1f2 Rc3 Qb1 Bgf3 Qb2 Kg2 h3+ Kf1 Qb1+ Rc1 Qb2 Q3h4 Bg3 Rc2 h1Q Nc6 Qh2 Ba6 Bgf2 Bc4 Qe5 Nd4 Nf4 Nge6 Bg3 Bf2 h2 Bcd3 Rd8 b8R Rd5 Rbb7 Rb5 Rbd7 Nc5 Rd5 h1Q+ Bg1 Qhh3+ Bg2 Qh5 Be2 Be1 B2d3 Qd1 Be2 Qhf5 Bgf3 Nh5 Kg2 Nf4+ Kh2 Qg4 Bf1 Rb8 Rc1 Qbb7 Rc4 Qba8 Rc3 Rb2 Rc2 Q8b8
n1R1r2k/K3n1RB/2Q5/nQ2q2B/1Qr1rN2/1n2bb1R/1bNqPq2/Q3B3 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 f5 b4 Kf7 g4 Kg7 d4 c5 d6 h5 d5 a5 d7 a4 b6 h3 b7 h2 g5 f3 Ke3 f2 b5 a3 g6 h4 d6 a2 b6 h3 Nc3 f4+ Ke4 c4 Kd4 f3 Kc5 Nc6 b8Q Na5 b7 Rh4 Kb5 Kh8 Bh6 Bg7 Bg2 f1N Bd2 f2 Nf3 Ne7 Nd5 c3 Ne1 c2 Bf3 c1B Bh5 Bgb2 Nc2 Ne3 Qf1 Nec4 g7+ Kg8 Qc7 Nb6 b8Q Re4 Bc3 Kh7 Qc6 Qc7 d8Q Bg4 Rb1 a1N d7 Bd2 Rg1 h1Q Nf4 N1b3 Rd1 Bdc1 Rd3 Rc4 Qe1 f1Q Rf3 Bd2 Qa1 Qf2 Qbb7 Bdc1 Qdb8 Qhg2 d8R Qe5+ Nd5 h2 g8B+ Kg7 Bh7 h1R Be1 Rh4 Rh3 Be3 Qbd6 Qge4 Qb4 Qd3 Rh8 Rf8 Ka6 Na8 Q7b5 Qd2 Rg2 Qg5 Rg1 Bf3 Rgg3 Rhe4 Nf4 Rf7 Rd8 Rf8 Rc8 Kh8 Rg1 Qe5 Rg7 Rcd4 Ka7 Rc4+ Q5c5 Re8 Qcb5 Nb6 Qcc6 Na8+
2r2B2/3b1b1N/Qb1BB3/2QR2r1/1Q3Pq1/K1Rq2nn/1q2nNNk/2Qr1b2 w - - 0 1 legal: proof: e4 b5 c4 f5 a4 fxe4 axb5 d5 cxd5 g5 h4 gxh4 g4 Kf7 d4 Kf6 Kd2 Kg5 Kc3+ e3 Kb4 Kf4 f3 Kg3 d6 e5 b6 h5 b3 c5+ Ka4 a5 g5 h3 b7 h2 b4 c4 f4 c3 d7 c2 b5 h4 g6 e2 g7 e1R b6 e4 d5 e3 d6 h3 Qd3 Nh6 g8Q+ Ng4 Qgh7 Rd1 Qhg6 Na6 b8Q Rg8 b7 Nc5+ Ka3 a4 Qc3 Ne4 Qc5 e2 Nd2 e1Q Ndf3 Qe2 Ne1 Qg5 d8B Bd7 Qbc7 Ngf2 b8Q Qgg4 Qbb4 Rc8 Ng2 Qb5 Be3 c1N Bc4 Ne2 Be7 Qa6 Bb3 Qd3 Rc1 Bg7 Bf8 Bd4 Qf6 Rg5 Bd2 Be3 Rc3 Bd4 Be6 Be3 Kb2 a3+ Kb3 a2 Ka3 Ba4 d7 a1Q+ Ba2 Qab1 d8N Bd7 Nf7 Bd4 Be6 Qc2 Q5a7 Bb6 Be3 Qcd2 Bec5 Qc2 Bcd6 Qd2 Nf3 Q2c2 Rf1 h1B Ng1 h2 Nh3 Qb1 Qe5 Qc2 Qa6 Qd2 Nh4 Bg2 Qec5 h1B Re1 Bf1 Ng2 Kh2 Q7c6 Rg7 Nfg5 N4g3 Nh7 Rg5 Qc7 Nc1 Re5 Nce2 Rd5 Q2c2 Ne3 Be4 Ng2 Bg6 Qe3 Qb1 Qc1 Bf7 Qcc5 Rg8 N3g5 Nh3 Ne4 Rg5 Nf2 Qb2+
1r1r4/Bk6/n2Bn1rK/r1b3Nb/bNRQp3/nB1Q1Q1N/2P4p/1q1NR3 w - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Ke2 h5 Kf3 a5 Kf4 d5 Kg5 Kd7 b4 Kc7 f4 e5+ f6 d3 g4 d2 b6+ Kb7 b5 h3 f5 h4 Bc4 e4 Bb3 d4 Ra4 d3 Rc4 h2 Ba3 h3 Bd6 a4 Nc3 Qd7 f7 a3 f6 a2 Qf3 a1N Nd1 Ra5 Qe2 Be7 f8N Nh6 Nh7 Na6 Qf2 Qc7 Qd4 Bd7 Kh5 Nf7 g5 Qd8 g6 Ng5 g7 Ne6 g8Q Qb8 Qg3 Rg8 f7 Rg6 f8Q Be8 Bb4 Bc5 Ng5 Bc6 Qff3 Be8 Nc3 d1B Ba3 Be2 Nd1 d2 Bb4 Rg8+ Kh6 Rg6+ Kh7 Bd7 Qfd3 Bh5 Qgf3 Kc8 b7+ Kc7 Ne3 d1R b6+ Kc6 Ba3 Rb1 Nd1 Be8 Ba2 Nb3 Bb4 Nd2 Bb3 Rb2 Ba3 Nb1 Bb4 Qg3 b8N+ Kb7 Nc6 Qb8 Ba3 Bd7 Nb4 Bb5 Nf2 Ba4 Nd1 Rg8 Kh6 Re8 Ne2 Rd8 Re1 h1R Ng1 h2 N1h3 Rg1 Nc6 Be7 Bd6 Na3 Nb4 Rb1 Bg3 Bc5 Bf2 Qf4 Bg3 Qc1 Bd6 Ka8 b7+ Ka7 b8B+ Kb7 Nd5 Rb2 Ba7 Qb1 Ba2 Rb6 Nb4 Rg2 Nh7 Rgg8 N7g5 Rc6 Bb3 Rcc8 Qff6 Rb8 Qff3 Rg6+
B1Q5/1p1bR3/1RPQqb1b/3n4/1RK1N1Nn/b4pQ1/2Qr3B/1r2qbBk w - - 0 1 illegal: No proof kernel
2rqk1b1/nN5r/nB4pq/7R/1NRQ3p/rNB1bPQB/3rRK2/N6q w - - 0 1 illegal: No possible last move, all moves rejected
R4K1Q/2B2NpQ/rp3r1Q/1nrR3b/2r3nb/5r2/1P2RpQq/kNBB4 w - - 0 1 legal: proof: f4 e5 a4 exf4 g4 d5 c4 h5 gxh5 Nc6 a5 Nb4 a6 Nxa6 cxd5 Nb4 Qc2 Na2 Qb3 Bf5 Qd1 Bc8 Kf2 Kd7 Kf3 Kd6 Ke4 Kc5 Ke5 Kc4 d4 a5 e4+ Kb4 h4 f5 d6 c5 d7 f3 Ke6 b6 Kf7 c4 h6 a4 h5 c3 h7 f4 d5 c2 e5 Kb3 d6 f2 e6 a3 e7 f3 e8Q Ra4 h6 Be7 Qd2 Bh4 Rh2 Rc4 Kf8 Nc3 Nh3 a2 Be2 f1R Ng5 Qc7 d8R Nb5 Qc6 Bg4 d7 Bh5 Nf7 Rf2 Rg2 Qh2 Bd1 Rf1 Re2 Nf6+ Ke7 Rf8 h8Q Rc5 h7 Ng4+ Qg5 Rf2 Qh6 Rc4 Qg8 Rf1 h8Q Rf2 Ne5 Rf6 Qgh7 Rf1 Ra8 Rf2 d8B Rf1 Na3 Rc5 Rb1 a1R Bc7 Ka2 Nf7 Rf2 Kf8 Rc4 B1f4 c1R Qgg6 R1c3 Bc1 Rf1 Qe4 f2 Qg2 Rcf3 B1f4 Rc5 Rc1 Rc4 Rcc2 Rc1 Rcd2 Ka1 Rd5 Rc5 Be3 R1c4 Bc1 Rg1 Ba4 Rd1 Nb1 Rdd3 Bc2+ Ra3 Bd1 Ra6
1R2RrQ1/pp2R3/B3rB2/1bN2Qp1/N4bR1/b1n2kP1/1K2NrbQ/n3b3 w - - 0 1 illegal: No proof kernel
2n1QB1r/N1N2p2/4pb2/Qq1R2B1/1PnbN3/B4B1b/1nRQpprk/2K5 w - - 0 1 illegal: No proof kernel
Q2N1q2/B1R1N3/2R4n/bqNRKB1n/1k1P3n/r1bb1Rr1/1r2r2R/3r1R2 w - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Kd7 Kf3 Kd6 Ke4 Kc5 d4+ Kb4 g4 c5 d6 f5+ Ke5 h5 e4 a5 d7 a4 g5 f3 b6 h3 b3 h2 g6 a3 g7 a2 b7 c4 Bh3 f2 Bg4 f1N Bf4 c3 Ne2 c2 Ng3 c1R Qf3 h4 Nd2 Nh6 g8R h3 Rg6 Re1 Rc6 Ra3 Rac1 Ne3 Rf1 Qg5 d8N h1R R1c5 a1B Rd5 h2 Qg2 Na6 b8R+ Bb7 Ra8 Nb8 Ra7 Ba6 Rac7 Rg1 Qh1 Bb5 Qf3 h1R Qg2 Ka5 b4+ Ka4 Bh3 Bd3 b5 Re2 b6 Bc3 b7 Bfb4 Nb3 Ba5 Nc5+ Kb4 Qf3 Ng2 Bg4 Na6 Bh3 Nh4 b8R+ Kc4 Rb3 Nb8 Qg2 Rh2 Rb2 Rg8 Rf3 Rc1 Rb1 Rch1 Rbf1 Nd7+ Kd6 Qg7 Qf2 Bab4 Rg1 Nb8 e5 Rb3 Rd7 Re4 e6 Bc2 e7 Bd2 e8R Bdc3 Re3 Qf7 Rde5 Bd3 Qa2 Rb2 Qa8 Ba5 Ncb7+ Kb4 Rde7 Qc4 Rd5 Qb5 Nc5 Nd7 Rg2 Ra3 Rh2 Re1 Rf8 Nf6 Be5 f4 Nf5 f3 Ra7 f2 Ne7 f1Q Ke6 Rf4 Bb8 Rff2 Rac7 Rea1 Ba7 Rfe2 Ke5 Nh5 Rff6 Rd1 Be6 Qh1 Rf1 Qf3 Bd7 Qf8 Bf5 Reg2 Ref3 R8g3 Bc8 Rgf2 Bf5 Rfe2+
2n2qNB/k1B5/1pR1nq2/3N1P2/b3B1r1/1QB2qq1/K2N1N1R/q2nq1R1 w - - 0 1 legal: proof: g4 d5 e4 dxe4 h4 f5 gxf5 a5 b4 axb4 f4 g5 c4 g4 f6 Ra5 f5 Rd5 cxd5 Bh6 Nc3 Kf7 Nb1 Bg5 hxg5 Ke8 d4 Kd7 Kd2 e5 Kc2 h5 Kb3 c5 a4 Kc7 f7 Kb6 f8R e3 d6 e2 d7 e1Q d5 e4 d6 c4+ Kb2 h4 g6 b3 g7 g3 a5+ Ka7 a6 e3 Bh3 c3+ Ka3 e2 Rh2 g2 Bf4 c2 Bh6 c1Q+ Ka4 b6 Rf6 b2 Ka3 Ne7 g8N Qg3+ Ka2 e1Q Bg7 Qf8 d8B Nd7 Qb3 Nc5 d7 Ne6 Nd2 b1N Bc7 Qcc3 d8B Bd7 Be5 Ba4 Bdc7 Nc8 Bd4 Rh5 Bh8 Rg5 Rg6 Qcc1 Bc3 Rg4 Rf6 Qge5 Rh6 Qef6 Rg6 Ka8 a7 Kb7 a8N Ka7 Ne4 Qg3 Nf3 g1Q Bg2 h3 Nf2 Qh1 Nd2 Qhe1 Rh1 h2 Be4 Nd6 Rg1 h1Q Rh6 Qhf3 Rh2 Na3 Rb1 Nab5 Rb2 Nc8 Rc2 Qe8 Bd6 Qef8 Nc7 Na3 Bde5 Nc4 Nd5 Nb2 Bc7 Nd1 Bb2 Qgh4 Rc6 Qhg3 Bc3 Qa1+
2B2R2/4pb2/2rr2K1/nk1BBNn1/RnpP4/bq2R3/pbB4Q/Q2r1RN1 w - - 0 1 legal: proof: e4 b5 c4 f5 h4 fxe4 a4 d5 axb5 g5 hxg5 dxc4 Ke2 Kd7 Ke3 a5 Kf4 c5 Kf5 h5 f4 e3 g4 c3 d4 c2 b4 c4 g6 a4 g7 e2 b6 Kc6+ Kg6 e1N b7 h4 g5 a3 f5 h3 f6 h2 f7 Ra5 b5+ Kb6 Nd2 Qe8 Bh3 Nh6 g8B Bg4 Bh7 Nd3 Ne4 Ra6 Bf4 c1B Nd6 Nc6 Be5 Bb2 Nf5 Ndb4 b8Q+ Ka5 b6 a2 b7 Kb5 Qc7 Rb6 b8R Na5+ Qd6 Ba3 Ra8 Rc6 Qf1 Qd8 Re1 Qb8 Re3 Bg7 f8R Nf7 Qa1 Bh6 Ne2 Bb2 Rf1 h1R Ng1 Ba3 Nh4 Be6 Nf5 Nb3 Ra4 Na5 Bg7 Bb2 Qh2 Qg3 Be5 Rd6 Re4 Qb3 Re3 Rc6 Kh5 Rg8 g6 Ng5 g7 Ba3 Kg6 Rd6 Ra8 Rc8 g8B Rcc6 Rf8 Nf3 Re4 Bhc1 Re3 Bcb2 Kh5 Bd7 Bd5 Be6 Kg6 Ng5 Bhg2 Rc8 Bb7 Rcc6 Bc8 Nh3 Bd5 Ng5 Qh4 Rh2 Qf4 Rd2 Qh2 Rd1 Nh4 Nf3 Kh5 Rd2 Bc2 Ng5 Kg6 Rd1 Nf5 Bf7+
4N3/3K2Rp/2p1Qn1R/nbNp1QR1/3b1rpn/1Pr1n1k1/3N1qB1/2B1N2R w - - 0 1 illegal: No proof kernel
1N2NR1r/2QRP3/1bQN1R2/rn5b/B3rq1R/2b1QR2/1rb1r2K/1k3r2 w - - 0 1 illegal: No possible last move
b1n5/Br2Q3/kB6/B2N3n/B4NB1/1B1Nnb1b/PK1r2rq/nRB5 w - - 0 1 legal: proof: h4 c5 d4 g5 hxg5 a5 c4 f5 e4 d5 exf5 a4 cxd5 a3 Nd2 Bg7 Rb1 axb2 Ne2 c4 Ng1 Be5 Ra1 Bd6 Rb1 Bc5 dxc5 Ra4 Ra1 bxa1R Nb1 Ra8 Kd2 Kd7 Kc3 Kc7 f4 b5 g4 Kb7 c6+ Ka7 c7 h5 f6 e5 f7 e4 f8B b4+ Kb2 b3 f5 h4 g6 e3 d6 h3 f6 h2 d7 e2 g7 e1N g5 Rh6 g6 Ka6 f7 Ng2 Qe2 Ne3 Nc3 Ra7 Bc5 Qh4 f8B Nc6 d8B Nce7 Ne4 Rb7 Nf2 Bh3 c8B Nf6 g8N Nh5 g7 Rd6 Bg4 Nc8 Bcb6 Rd3 Bfc5 c3+ Ka3 c2 Ne7 Rb1 g8B b2+ Bb3 Ra1 Nd5 b1B Bg2 Qg3 Qe1 Rd2 Ne2 Qh4 Rg1 h1B Nd3 Qg3 Bf1 Qh2 Nef4 Bf3 Kb2 Rg2 Ba5 Rd2 Ba7 Rg2 Bcd2 c1N Bdb6 Bc2 Ba4 Nb3 Bc1 Bcd1+ Be2 Bc2 Bd1 Rd2 Ne5 Bce4+ Bc2 Rg2 Ned3 Rd2 Qh4 Rg2 Qe7 Rb1+ Kc3 Na1 Bcb3 Rbb2 Rf1 Rbd2 Re1 Nec2 Kb2 Ne3+ Ka3 Rde2 Nc3 Qg3 Bb2 Rd2 Rb1 Rd7 Bc1 Ba8 Ncd5 Qh2 Qd6 Nac2+ Kb2 Rb7 Qe7 Na1+
5B1q/1bKrN2k/B1N2qpB/1b1B2PQ/B2q3n/1q4n1/1bp3R1/3Q1BN1 w - - 0 1 legal: proof: b4 b5 h4 d5 f4 e5 fxe5 a5 a4 g6 c4 dxc4 h5 f6 h6 Ne7 Ra2 Rg8 Rc2 Rg7 hxg7 Ng8 Rb2 Na6 axb5 Nb8 b6 Ra6 b5 Ra8 Rb4 axb4 Qb3 Qd6 Qa4 Qd8 Qd1 Ke7 Bb2 Qe8 Bc3 Bf5 Rh4 Nd7 Ba1 Nh6 Nc3 Rd8 Rf4 Nb8 Nh3 Bc8 Ng1 Kd7 Re4 Bd6 Nb1 Qe7 Rf4 Rh8 Rh4 Ke8 Rh1 Ng8 Bb2 Qd8 Bc1 Bf8 Kf2 Kf7 Kg3 h5 Kf4 c5 g4 h4 d4 f5 e4 h3 b7 b3 d5 c3 d6 c4 d7 b2 b6 h2 e6+ Kf6 e7 c2 e8B Nc6 b8N c3 b7 Nd4 Nc6 Nh6 g8B Kg7 Ke5 f4 b8Q f3 Qb5 f2 Bd5 Nhf5 Bh6+ Kh7 g5 c1Q Qbe2 c2 Qh5 Qe3 Nc3 Qb6 d8B b1Q Be7 Ng3 Kd6 Nf3 e5 Qed4 e6 Bg7 Bf8 Nh4 e7 Bb7 Kd7 Q6b3 Kc7 Q1b2 Bd7 Rg8 e8B Rh8 Ba6 f1B Bh3 Bb5 Bf1 Qa1 Ne4 Qf6 Nd6 Qad4 Nf5 Rg8 Nfe7 Bh8 Nh3 Rg7 Rg1 h1Q Rg2 Rf7 Ng1 Qh3 Kb8 Bg7 Nf5 Rc7 Nfe7 Rd7 Qb1 Qb6 Be4 Qfc3 Nb4 Qhe6 Bf5 Rd5 Qbd1 Be2 Beb5 Rd7 Ba4 Bb5 Be4 Qg8 Bd5 Qh8 Nbc6 Bd4 Nd8 Qbf6 Ndc6 Qc5 Bf3 Bb2 Bd5 Rd6 Kc7 Qcd4 Nf3 Rd8 Ng1 Rd7+
r6B/2r1RBn1/1q4r1/BRp3rb/1Nq2bP1/2P1Q2Q/RnN1n1Q1/1k3K2 w - - 0 1 legal: proof: b4 a5 h4 g5 d4 gxh4 e4 e5 dxe5 f5 exf5 b6 a4 b5 axb5 axb4 f4 Kf7 e6+ Kf6 b6 d5 c3 c5 b7 h5 e7 d4 e8R d3 g3 h3 Ne2 b3 Rh2 h4 Re4 b2 Re8 Nc6 b8B Bd6 Ra2 Nh6 Qd2 Nd4 Na3 b1Q Bc7 Qb5 Re7 Rh7 Qe3 Qc4 Ba5 Qb6 Nc2 d2+ Kf2 Be6 g4 Bf7 Nb4 Bh5 Bg2 d1N+ Kf1 Rg7 Bd5 Rg5 Bf7 Nb2 Rf2 h2 Qh3 Nb3 Be3 Nc1 Bd4+ Be5 Qe3 h3 Rg2 h1R+ Rg1 h2 Qh3 Kg7 f6+ Kh7 f5 Bf4 Bd5+ Kh8 f7+ Kh7 f6 Kg6 f8Q Nf5 f7 Ng7 Qc8 Kh6 Qb7 Kg6 Bf2 Kf6 Bg3 Rg6 f8Q+ Kg5 Bf7 Kf6 Be6+ Ke5 Qbg2 Rg5 Qe8 Rg6 Qf2 Ke4 Qfg2+ Ke3 Bf7+ Kd2 Bh4 Kd1 Bf6 Kd2 Na6 Kc2 Nb4+ Kb1 Be5 Qe4 Nd4 Ne2 Ndc2 Qc4 Qd7 Ra7 Qd4 Rc7 Qde3 Rg5 Ke1 Rg6 Rf1 Rg1 Bf6 h1R Bd4 Rh2 Be5 Rgh1 Rg1 Rg5 Kf1 Qbb5 Nc6 Nd1 Qhf3 Nf5 Bd5 Bf7 Ke1 Rh8 Rf1 Qb6 Rg1 R1h6 Qfh3 Bh5 Bf7 Ra8 Bh8 Ng7 Rh1 Rhg6 Rf1 Be5 Rf6 Qb8 N6b4 Bf4 Rb6 Qb7 Kf1 Nb2 Rb5 Qb6
4n3/3k3B/2brrP2/q2Q1R1P/4R1r1/bNBb3q/b2NqKQR/bnB4N w - - 0 1 legal: proof: e4 b5 d4 f5 exf5 c5 g4 cxd4 a4 h5 axb5 hxg4 h4 e5 c4 a5 f4 g5 b4 d5 b6 a4 b5 e4 b7 e3 c5 d3 h5 d4 b6 d2+ Ke2 a3 c6 a2 f6 g3 c7 g4 f5 g2 f7+ Kd7 f6 g3 Kf3 e2 Rh3 e1Q Rh4 d3 Be2 Qf1+ Ke3 Na6 b8B Ba3 f8Q Ne7 b7 Nd5+ Kd4 Nc3 Qc2 d1B Ke3 d2 Qb3 Bc2 Qfg8 d1B Nd2 Nb1 Rh2 Bd3 Nh3 g1Q+ Nf2 g2 Bf3 B1e2 Be4 Bf3 Bh7 Bc6 Ba7 Qh1 Bd4 g1R Bc3 Qd1 Qg2 Rg8 b8R Rg4 Rb4 Rf1 Re4 Re1+ Kd4 B8b7 c8N Qa5 Ne7 Rd8 Nf5 Nc7 Qc4 Qf1 Nh1 Ne8 Qc5 Bba6 Qe5 Bac4 Qc5 Be2 Ke3 B4d5 Nd4 Bd3+ Qe2 Qg2 N4b3 Qh3+ Kf2 Be6 Qf3 Bed5 Qg2 Bg8 Rb4 Re6 Qc4 Kc8 Qcd5 Rdd6 Re4 Kd7 Bd4 Nc3 Rb1 a1B Rb2 Bf7 Rc2 Nb1 Rc5 Bg6 Bc3 Bc4 Nd4 Ba2 N4b3 Bf5 Rf4 Bd3 Rcc4 Re1 Rf5 Re6 Re4 Qe2+
r2N4/1rN4R/B1nR4/1r1rnnQ1/nb4BB/1b5N/1P1PKR2/q2Qbq1k w - - 0 1 illegal: No proof kernel forced: bxDB
5Rnk/1b5B/3BrRP1/Pnq2NB1/1p2KQb1/N3nQb1/q4q2/N1Qr1r2 w - - 0 1 illegal: No possible last move
1knn1R2/n2RPq1N/1rb2Qn1/1nQ1qp1R/NB6/1Q5r/1b1Pq3/1N2K2B w - - 0 1 illegal: No possible last move, all moves rejected
4bB2/qr2pP1R/2n1Q1Nq/r1Q2Rr1/k4b2/Pq2n1B1/3NrQK1/3rRB2 w - - 0 1 legal: proof: e4 a5 b4 axb4 h4 f5 exf5 d5 c4 g5 cxd5 gxh4 f4 Kd7 Kf2 h5 g4 b5 d4 c5 d6 Kc6 f6 h3 g5 b3 f5 b2 f7 h4 g6 c4 d7 b4 a3 Kb5 d5 b3 g7 h2 d6 h3 f6 Nh6 g8Q Ra5 Qd4 Nc6 Qd2 Qb6+ Kf3 Qa7 d8Q Nf5 d7 Ka4 Qg7 c3 Qdg2 c2 Q2g6 Rh5 Qc7 Rg5 d8R Ne3 Rd5 Bd7 Nd2 b1R Rf5 b2 Ne2 Be8 Q7h7 Bh6 f8B Nd1 f7 Ne3 Rg1 h1R Nf4 Rh2 Rh1 Rhg2 Qe6 h2 Ng6 Re2 Qcd6 Ng4 Qc5 Ne3 Rg1 h1R Qg7 Rh4 Qgf6 Rb4 Rh1 Rb7 Rh5 Rg1 Qh4+ Bf4 Rh7 Rg5 Qf2 Bd6 Nc4 Bf4 Bd2 Rd1 Be1 b1Q Nd2 Qb3 Rb1 Ng4+ Kg2 c1Q Qb6 Ree5 Qfc5 Re3 Bg3 Re2+ Qf2 Qcc3 Qbe3 Qg7 Qc5 Qh6 Nf3 Rd6 Re1 Rd1 Nd2 Ne3+
q2Q4/1k1NQq2/1PRQr3/2p1B1K1/1nBrR2n/RnPq2N1/B5p1/2bq1r2 w - - 0 1 legal: proof: e4 d5 g4 dxe4 a4 b5 axb5 f5 h3 fxg4 Ra6 g3 Ra1 g2 Na3 g5 Nb1 g4 Bd3 g3 Bf1 Bg4 hxg4 Qd4 Rh3 Qd7 Rh1 Qd8 Ke2 Kd7 Ke3 Kc8 Kf4 h5 d4 c5 b4 a5 d5 e3 b6 a4 g5 a3 c3 h4 b5 a2 g6 e2 d6 e1R d7+ Kb7 g7 h3 Na3 h2 Kg5 Rh4 f4 Nh6 g8B Ra6 f5 e5+ f6 e4 Qd6 e3 Bfc4 e2 Bf4 Nc6 Be5 Rf1 Bge6 e1Q Ne2 Qa8 d8Q g1Q f7 g2 Ng3 Qd4 Bed5 Bg7 f8Q Qef2 Re1 a1N Re4 Qf7 Rg1 Qc7 Qfe7 h1Q Ba2 Qd3 Nc4 Nb3 Be6 Rff4 Ra1 Nf5 Bf7 Nb4 Bg8 Qc8 Be6 Qhd1 Bf7 Kb8 b7 Rf1 Nb6 Rhf4 Bg8 Nh4 Bc4 Ka7 Nd7 Qa8 b8R Rc6 Qh6 Re6 Rc8 Kb7 b6 Bf8 Re2 Rd4 Re4 Qcb8 Rc6 Qba7 Bb1 Qa2 Qg6 Qf2 Ra3 Qf7 Ba2 Nf3+ Kg4 Bh6 Qgf6 Bc1 Qf4 Nh4+ Kg5 Bb2 Qff6 Q3c2 Qd6 Qcd3 Qfe7 Bc1+
q2NQ3/1q2p3/2bn1BP1/1r1pR1pQ/r2k1N2/1rbBb1Pr/4Q3/RN1K1B2 w - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 h5 g5 Bd3 Nc6 Bc4 Ne5 Bf1 Ng6 hxg6 Bh6 Qd2 Bg7 Qd1 Bf8 b4 h5 c4 a5 f4 e3 f5 h4 g3 e2 f6 d3 b6 h3 b7 h2 b8N d2+ Kf2 e1B+ Ke2 a4 b5 a3 c5 a2 c6 Bf2 b6 Rh3 c7 Bb7 c8B Ra5 Bg2 Rb5 Bb2 Nh6 Nc6 Nf5 Bf1 Bg7 f7+ Kf8 Bd4 Nd6 Bf6 Be3 Qe1 Ba8 b7 d1R b8Q Rd3 Ba6 Rdb3 Kd1 Qc8 Nd8 Bc6 Ne2 Qb7 Rg1 h1Q Nf4 Qe4 Qe2 Qf3 Bb2 Bc3 Qa8 Kg7 Qb8 Kf6 f8Q+ Ke5 Qh8+ Ke4 Qh5 Kd4 Qc8 R5b4 Bd3 Qd5 Qb8 Qa5 Rg2 Qaa8 Rf2 Rb5 Rf3 Bg1 Re3 Bf2 Re5 Be3 Kc2 Nf5 Kd1 d5 Qc8 Nd6 Qd7 Qbb8 Qe8 Qb6 Bc2 Qbb7 Bd3 Kc5 Re4 Be1 Bf6 Bc3 Re5 Kd4 Nd2 Qac8 Rc1 a1R Rb1 Ra7 Ra1 Ra4 Nb1 Qca8
2qNNqrb/k1n4R/qq1Bp1n1/2RN4/3n2N1/2BrQ3/PpPRK2N/8 w - - 0 1 legal: proof: e4 c5 d4 f5 exf5 a5 dxc5 Kf7 b4 axb4 f6 Ke6 g4 Ke5 f7 Ke6 Kd2 Kd5 Ke1+ Kc6 f4 h5 f5 b6 f6 Ba6 Be2 Bd3 Bf3+ Be4 Be2 Bf5 gxf5 Kb7 Bg4 hxg4 Na3 Kc7 Nb1 Kc6 h4 Kb7 h5 d5 h6 g5 c6+ Ka7 c7 b5 c8R e6 h7 b3 Rc6 b2 Bd2 b4 Kf1 b3 Rc5 d4 Rh4 d3 Rh2 g3 Nc3 b1Q Nf3 b2 Qe1 g4 Nd5 Ne7 Bc3 d2 Ke2 Rg8 h8N g2 Rh7 g1Q Nh2 Bg7 f8N g3 f7 g2 f6 Qc8 Nd7 Ng6 f8N Na6 f7 Nc7 Ne5 d1N Qg3 Ne3 Neg4 Nf5 Nd7 Qbc1 f8B Qh6 Nf7 Bh8 Bd6 Qhf8 N7f6 Nd4+ Kd3 Qh1 Nd8 g1Q Ne8 Qgf2 Re1 Qhf1+ Re2 Rb8 Qe3 Rb3 Kd2 Q2g1 Rf2 Qfa6 Re2 Qgf2 Kd1 Ra3 Rd2 Rb3 Bb4 Rd3 Bc3 Q2f7 Ke1 Qfd7 Kd1 Qdb5 Ke1 Qbb6 Kd1 Nb3 Ke2 Nd4+
BBN1QqR1/NP3p2/4r1Rb/3R1P2/n1BB1pb1/1r3kb1/n5b1/1Bb1K1n1 w - - 0 1 illegal: No possible last move
n3N3/6pn/1p1Bp3/1pP3k1/R1RbP1Np/1B1rq1n1/RK1R2bq/2QRN3 w - - 0 1 illegal: No proof kernel
2N1K3/1q2R3/1BrNbB2/b4Rb1/2Nq1rqq/1QP2P1n/4RNk1/n3B1n1 w - - 0 1 legal: proof: d4 b5 g4 f5 f4 c5 a4 cxd4 axb5 h5 Bh3 g5 fxg5 f4 g6 f3 exf3 Qc7 g5 Qd8 Bg4 hxg4 Kd2 a5 Kd3 d5 h4 Kd7 b4 Kd6 g7 Ke5 b6 g3 h5 a4 b5 g2 g6 a3 h6 a2 h7 Nc6 b7 Be6 b8N Ra6 b6 Nh6 g8R Nf7 b7 Ng5 g7 Nh3 Nd2 Kf4 Nc4+ Kg3 Be3 Rb6 Rc1 a1N Na6 Rb4 b8B+ Qc7 Nd6 Qb7 Rh2 Rc4 Nb4 Rc3+ Kd2 d3 Bb6 Nd4 Ke3 d2+ Nd3 Rc6 Ne5 Ne2 Nec4 d4+ Ke4 d3 Ke5 Rc7 Ba5 Rc6 Bbc7 Kf2 Bcb6+ Kg3 Qf1 d1Q Bd2 Qe1 c3 Qf2 Be1 d2 Rb1 d1Q Rb5 Qd2 Rc5 Qh6 Rd5 Qh4 Rb5 Bd5 Kf5 e5 Kg6 e4 Ra5 Be6 Rf5 Be7 Re8 e3 g8N Bg5 Ne7 Rf8 h8B Qg4 Nec8 Rf7 Re7 Rf8 Rb5 Rf4 Rf5 Nc1 Bf6 e2 Bd2 Qd4 Qd1 e1Q Qb3 Ne2 Kg7 Kf2 Kf8 Kf1 Ke8 Qeh4 Qa4 Nf2 Nh3 g1B Rg2 Bh2 Qb3 Bg3 Rh2 Ng1 Rh1 Kg2 Be1 Ne4 Nf2 Bh2 Nd1 Bg3 Rh3 Nf2 Rh1 Nfh3 Rh2+ Kf1 Re2 Bf2 Rf7 Be3 Nf2 Kg2 Bg7 Bd8 Bf6 Bc1 Re7 Bd2 Ba7 Ba5 Bc5 Re4 Ba7 Bg5 Bb6 Rf4
5kb1/1R1rr1p1/1pn5/R4B1P/Q2NB2P/4qnB1/3NRbb1/K1N1rbN1 w - - 0 1 legal: proof: c4 a5 e4 f5 exf5 h5 b4 axb4 g4 c5 gxh5 d6 d4 d5 cxd5 cxd4 Kd2 e5 Kc2 d3+ Kb2 d2 f4 b6 a4 e4 h4 e3 a5 e2 d6 e1R d7+ Ke7 a6 b3 f6+ Kf7 f5 Qe8 d8R Qc6 a7 Ba6 Rh2 Re4 Rd7+ Re7 Rb7 Bd3 Bh3 Qe4 Re2 Nc6 Ra5 Nd4 Ka1 Re8 a8B Qe3 Bb2 Nf3 Be5 Rd8 Bg3 Rdd7 Qc2 d1B Nd2 Ba6 Qe4 Bc2 Qa4 Be4 Bg4 Re8 Bh3 Bc5 Bg4 Kf8 f7 Rh6 Bh3 Rhe6 Bg4 Ke7 f8N Kf7 f6 R8e7 Ng6 b2+ Ka2 b1B+ Ka1 Bad3 Nf4 Ba2 Bf5 Kf8 f7 Ba6 Nd3 Bed5 Re1 Bab3 Nc1 Bf1 Qa3 Bbc4 Qa2 Bg2 Qa4 Bcf1 Re2 Qd3 Rba7 Bf2 Bb7 Bc4 Bbe4 Qe3 Rb7 Re8 Bh3 Ne7 Bg4 Nc6 Bgf5 Ke7 f8N Re5 Bf4 Bg8 Ne6 Kf7 Bg3 Ree7 Nd4 Kf8 Kb1 R5e6 Ka1 Ne1 Bd3 Qg5 Ree5 Nf3 Re1 Re2 Bde4 Qe3 Nb1 Rd2 Re2 Rd1 Nd2 Re1
2k3b1/b2Np1N1/rBr1rp2/Rq2P1p1/4R2N/1B5P/2BRbB2/q2nQK1n w - - 0 1 illegal: No possible last move, all moves rejected
1K6/R1PNn2B/7b/p3QBk1/QPN3qn/1p3Bb1/1brr4/2BR1rqB w - - 0 1 legal: proof: f4 e5 fxe5 c5 b4 h5 d4 cxd4 g4 hxg4 b5 Qf6 Na3 Qb6 Nb1 Qd8 a3 a5 Nd2 Qe7 Bh3 Qb4 Bg2 b6 Bf1 Ba6 bxa6 b5 Bb2 Qd6 Nb1 b4 Bc1 b3 Kf2 Nf6 Ke1 Qb4+ axb4 Ng8 Kf2 Ke7 Kg3 d5 Kf4 f5 e4 g6 c4 g3 h4 d3 h5 d2 e6 Kf6 e5+ Ke7 h6 g2 a7 d4 c5 d3 c6 Bg7 h7 Nh6 Nf3 g1B Bh3 Rd8 h8Q Bd4 Na3 Bb2 Nc4 Rd6 Qc2 d1Q Qb1 d2 Qa2 Qg1 Qa4 d1Q Bg4 Ng8 Rh7 Nd7 Bh5 Rf8 a8B Rd2 Rb1 Rc8 Bb7 Kf8 e7+ Kf7 e6+ Kf6 e8B Nf8 Nfe5 Ne7 Bd7 Rc7 Bf3 Qg4+ Ke3 f4+ Ke4 g5 Bdc8 Qdg1 Nd7+ Kg6 Ra1 Bh6 Qe5 Kh5 Rf7 Nfg6 Rg7 Nd5 e7 Nh4 Rf7 Kg6 e8B Ne7 Ba8 Qh3 Bh1 f3 Bab7 Kh5 Rg7+ Kg4 Bg6 f2 Bh7 f1R Ba8 Nef5 Re7 Kh5 Bab7 g4 Rb1 g3 Rf7 Re2+ Kd5 g2 Ke6 Kg4 Ra1 Ne7 Kd6 Rc2 Ba8 Rb7 Rb1 Rb5 Kc7 Rd5 Kb8 Rdd2 Ndb6+ Nef5 Ra7 Rdf2 c7 Rfd2 Bf3+ Kg5 Be6 Qg4 Nd7 Qf2 Ra1 g1B Rb1 Bh2 Ra1 Bd4 Ba3 Qfg1 Rd1 Bg3 Bc1 Bc3 Qh8 Ne7 Bef5 Ba1 Qe5 Bb2
BN2r2k/qQp1P3/6qp/2N5/NPbN2B1/Q1nN3p/1n3n2/bR1nK2R w - - 0 1 legal: proof: g4 a5 a4 b5 axb5 g5 c4 d5 cxd5 Nc6 f4 Bd7 h4 gxh4 b3 Nh6 g5 Qb8 f5 Bc8 g6 Ng8 Bb2 Ra6 Bf6 e5 Bg5 Qa8 Bf4 Nb8 g7 Rg6 fxg6 exf4 Rh3 Qa6 Rh2 Qf6 Rh1 Qd8 d4 f5 e4 a4 e5 a3 e6 f3 b4 f4 e7 h6 d6 a2 b6 h3 d5 Na6 b7 Nf6 b8N Ng4 g8B Nc5 g7 Nf2 Qd3 Na4 Bg2 Be6 Nc3 Nb2 Rb1 a1Q Nge2 Qa7 Nd4 Qd7 Qe3 Qc6 Na4 Qc2 Qc3 Qg6 Qa3 Bf7 Bh7 Bg8 d7+ Kf7 d8N+ Kf6 d6 Bc4 g8Q Bg7 Qd5 Re8 d7 Bh8 Bg8 Kg7 Bf7 Kh7 Qc3 Bf6 Qb5 Kh8 Qb7 Nfd3+ Kf1 f2 N4c6 Qg5 Bh5 Qg6 Qb5 Be5 Ke2 f1N Nb7 Ne3 d8N Nd5 Ne6 f3+ Kd2 f2 Nf4 Bd4 Nbc5 f1N+ Ke2 Nfe3 Qa3 Be5 Bg4 Nf2+ Ke1 Ned1 Nfd3 Bf6 Nb6 Na4 Be4 Ba1 Nd4 Nab2 Nba4 Nf6 Ba8 N6e4 Qb7 Nec3
2b5/BQ2pr1p/N2bb3/kb1Pn3/1nB2QN1/6KQ/1P1rQ1qQ/1R2r1Rq w - - 0 1 illegal: No proof kernel
1b3Kn1/bQ1p1q2/N6R/3B2BP/N6n/r1n1pN2/b1PN1rp1/kNR3nQ w - - 0 1 legal: proof: e4 b5 d4 f5 exf5 c5 g4 cxd4 a4 h5 axb5 hxg4 Ke2 Kf7 Kd3 Kf6 Kc4 Ke5 Kc5 g5 h4 a5 b4 a4 f3 g3 b6 a3 b5 a2 b7 d3 f6 d2 b6 g2 f7 g4 Bc4 g3 Bd5 Nc6 b8N Qe8 b7 Nd4 Na6 Nf5 b8N Bh6 f8N Qf7 Ne6 Be3+ Nd4 Bb7 h5 Bf4 Nb3 Nh4 Qf1 d1N N3d2 Nc3 Qb5 Bc6 Qb2 Kf5 Qb7 e5 Kd6 Be3 f4 e4 Nc5 Ra3 Ngf3 g1N Nba6 g2 Na4 Ba7 Qc8 Kf6 f5 Bb5 Qb7 Bc4 Rh3 Rh7 Rg3 Rh6 Rg7 Rg6 Rh7 Rg3 Ne1 Rf3 Rh8 Rf2 Rh6+ Kg5 f6 Kf4 Nef3 Ke3 Nb3+ Ke2 Bg5 Kd1 Nb3d2 Kc1 Nb8 e3 Na6 Qh7 f7 Qf5 f8Q Qh7 Qf5 Qf7 Qh3 Bb3 Nb6 Kb2 Qh1 Na4 Nc3 Bc4 Rf1 a1B Ncb1 Nc3 Na4+ Ka2 Rd1 Bb2 Rc1 Ka1 Kc7 Ba2 Kd8 Nce2 Qh3 Be5 Qh1 Qh7 Ke8 Beb8 Kf8 Nc3 Qb5 Qg6 Qb7 Qf7+
1B1bN3/Pp4pr/1rp1K2k/4nB1r/Q1bQq3/RrnRNP2/1Qn1Q3/6Q1 w - - 0 1 legal: proof: e4 a5 c4 h5 b4 axb4 g4 d5 cxd5 f5 exf5 hxg4 Ke2 Kf7 Kd3 e5 Ke4 g3 a4 c6 h4 b3 d4 b2 a5 g2 h5 Nd7 d6 Nb8 a6 Qa5 a7 Qa3 f3 Be7 d7 Qa2 d8Q Qa3 h6 Bh4 f6 Kg6 f7 Be1 f8Q Kh7 d5 Be6 d6 Bg3 d7 Bd5+ Kf5 e4 Qfe8 e3 Qb6 e2 d8Q e1N Nd2 b1R Qa4 Qa2 Nh3 g1R Qe2 Be5 Qb2 Bd4 Nf2 Bb3 Nc4 Bf6 Bh3 Nc2 Nd1 Ne7+ Ke6 Nd5 Nde3 Nc3 Qd4 Nd7 Bg4 Rg2 Rd1 Bd8 Rd3 Ne5 Bh3 Kg6 h7 Kh6 Bf5 Rg5 Bd2 Rh5 Be1 Qa3 Bg3 Qb4 Ra3 Rc8 Bh2 Rc7 Bg3 Rd7 Bh2 Rd5 Nd6 Bc4 Ne8 Rb5+ Nd5 Nd7 Bb8 Rb6 Qg1 Ba6 Ne3 Ne5 Qa2 Rb3 Qb2 Rg8 Qgd1 Qe4 h8Q+ Kg5 Qh7 Rh8 Qg8 Bb5 Qg1+ Kh6 Qf8 Ba6 Qc5 Rh7 Qcd4 Bc4+
K1bQ1R2/Q2pbq2/P1rP2QN/8/6Q1/1k1br1n1/bB2Bb1B/1q2N1Rq w - - 0 1 legal: proof: g4 a5 h4 g5 hxg5 f5 e4 f4 b4 axb4 g6 f3 c3 bxc3 g7 Nc6 g5 Nd4 g6 Ne2 Bb2 Ng3 Bc1 Ra5 fxg3 Ra7 g4 Ra8 g5 f2+ Ke2 Nf6 Bg2 f1N Ke1 Ng3 Bf1 Nf5 exf5 Ng8 Ke2 c5 Ke3 h5 Ke4 e5 Kd5 Ke7 d4 b5 a4 c2 a5 c4 Bf4 c1Q Nd2 c3 Ngf3 e4 Ne5 e3 Qa4 c2 Nf7 h4 Nf3 h3 Kc5 h2 d5 Nf6 g8Q b4 g7 e2 g6 e1B Be2 b3 Rf1 h1B Bh2 Rh3 Nh6 Qe8 Kb6 Nh5 d6+ Kf6 Qh7 b2 g8Q b1B g7 Be7 Rf2 Qg6 Qd8 Ba2 g8Q Ra6+ Kc7 Qe8 Kb8 Rc6 Qgg4 Qb2+ Ka7 c1Q Ka8 Qd1 Rc1 Qb1 a6 Qf8 Qaa5 Qe8 Qac7 Rg3 Qa7 Qd5 Ne5 Be4 Nd3 Re3 Rf3 Bf2 Rg1 Qg6 Ne1 Ng3 Rf4 Ke5 f6 Qg7 f7 Bd3 f8B Qh1 Qhg6 Kd5 Rf6 Qg8 Bg7 Qe6 Rf8 Qf7 Bd4 Kc4 Bb2+ Kb3
1q1NBKB1/r2b2RQ/4BnN1/2nQ3n/P2q3N/4BP1r/1qRp2n1/2qk4 w - - 0 1 legal: proof: g4 a5 d4 c5 f4 cxd4 h4 g5 hxg5 f5 b4 axb4 g6 e6 g7 Ke7 g5 Ke8 g6 Be7 Bb2 Bg5 fxg5 f4 Bc1 f3 exf3 Ra4 Qd2 Ra7 Qd1 Ra8 Kd2 Ke7 Kd3 Kd6 Ke4 Kc5 Ke5 d5 c4 h5 a4 b5 Rh2 d3 Rf2 h4 Bh3 b3 Nd2 Kb4 c5 Kc3 c6 b4 c7 b2 Re2 b1Q Nc4 d4 Bf1 b3 Bf4 d2 Na5 h3 Nb7 d3 Be3 h2 Nh3 h1N Nf4 b2 Ng2 Ng3 Nh4 Nf6 g8N Nbd7+ Kd6 e5 g7 e4 g6 Ra7 Ne7 Qc1 g8B b1Q g7 Ngh5 Neg6 Qbb2 Ra2 Qe8 Nd8 Nc5 Rg2 Bd7 c8B Rh6 Be2 Rh8 Qh1 d1Q Qh2 d2 Bb5 Kc2 Qe5 Qa1 Qd5 Qdc1 Rg5 Kd1 Rg2 Qd4 Rc2 Qab2 Rg5 Bf5 Bbd7 Rh7 Bde6 Qeb5 Bcd7 Qb8+ Ke7 Rh8 Kf8 Bh3 Bf4 e3 Be8 e2 Be3 e1N Nf4 Ncd3 Bf5 Ra8 Nhg2 Rh7 Bgf7 Ra5 g8Q Ra7 Rg7 Ng3 Ng6 Nc5 Qh8 Rh4 Qh7 Ngh5 Bg8 Bg4 Bc8 Rh3 N2h4 Ng2 Bcd7 Bf5 Bc8 Bd3 Bg4 Bb5 B4e6 Bd7
1KNr2B1/1Rn2q1Q/P1P5/2b1Qr2/k3N2b/2q1Rnqb/2Nb1Brq/NQ6 w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 c5 d4 h5 gxh5 cxd4 Ke2 b5 Kd3 d5 h4 Kd7 a4 Kc6 f4 e5 c4 g5 h6 g4 a5 e4+ Kd2 g3 h7 b3 h5 e3+ Kd3 e2 c5 e1B h6 b4 f6 Kb5 a6 g2 c6 b2 f7 b3 f5 Qg5 f6 Bc5 f8N Qg3+ Be3 Bh3 f7 Bd2 Nd7 Nf6 f8N Ne8 Nf3 g1B Ne6 Rf8 h8Q Rf5 h7 Bf2 Na3+ Ka4 Qe5 b1R h8Q Nc7 Neg5 Rb2 Ne4 Qh2 Rc1 Bh4 Qh7 Ra2 Nc2 b2 Nfe1 b1Q Bg1 Qb2 Rb1 Qa1 Bf2 Qc3+ Ke2 Qcg3 Rb7 Qc3 Qb1 d3+ Kd1 d4 Na1 Qg3 Nec2 Qh2 Bg2 Rb2 Re1 Ra2 Nf8 Nd7 Ng6 Rd8 Ne7 Qg3 Nc8 Rb2 Qee7 Ne5 Re3 Nf3 Qg5 Be1 Qgh5 d2 Ke2 Ra2 Qe8 Rb2 Qe5 d1Q+ Kf1 Qc1 Ke2 Bd2 Bh1 Ra2 Bg2 Q3b2 Kd3 Qg1 Kc4 d3 Bh1 Q1h2 Bg2 Bdb4 Bf1 d2 Bd3 d1Q Be2 Nd4 Bh5 Bc3 Bf7 Qh5 Bg8 Nf3 Ned6 Nb5 Kd5 Bd2 Ke6 Qc3 Ne4 Rdf8 Kd7 Nc7 Bc4 Rh8 Bg8 Qhg6 Ne7 Qf6 Kc8 Qf7 Kb8 Rb2 Nc8 Ra2 Qhg7 Rb2 Bh7 Re8 Bg8 Rd8 Qh7 Bg4 Be1 Bc1 Na3 Rg2 Bf2 Bd2 N3c2 Bh3
K1qnr2q/B2q2p1/q2N2q1/NQrP1b1B/q4R2/2n1kP1Q/3R1b2/4N1BN w - - 0 1 legal: proof: e4 b5 c4 f5 a4 fxe4 axb5 d5 cxd5 h5 g4 hxg4 Ke2 Kf7 Ke3 Kf6 Kd4 Kg5 Kc5 Kf4 b4 a5 d4+ e3 h4 e5+ d6 a4 b6 c6 h5 g3 b7 a3 b5 g2 h6 a2 d5 e4 h7 Qc7 b6 Qd7 Be2 Nf6 Qd3 Ra5+ Qb5 Rg8 Nf3 g1Q h8Q Qg6 Rh5 Be7 Ne1 Re8 Nc3 Bd8 Rb1 a1Q Rb4 Qa4 Rh2 Bc7 Kc4 c5 Nd1 Nc6 b8B Nd8 b7 Bb6 Bh5 Ba7 Bb2 e2 f3 e3 Bd4 Ne4 Nf2 Nc3 Nh1 Bb6 Bc7 Ba7 b8N Bb6 Nc6 Ba7 Nc2 e1Q Bb8 e2 Bg1 Qf1 Ne1 Bb6 Rf2 Ke3 Ba7 Qfh3 Qf8 Qhe6 Qf5 Qg8 Qh3 Qh8 Nd3 e1Q Rd2+ Qf2 Ne1 Qc7 Ne7 Bf5 d7 Qb7 Nc8 Qa6 Bh2 Qfg2 Nd6 Q2g5 Ra2 Qe7 Rd2 Ne6 d8N Qd7 N8b7 Nd8 Qf1 Bc7 Qh3 Bb8 Nc8 Bg3 Bg1+ Bf2 Ncd6 Qc2 Ra4 Qe4+ Kb3 Qh4 Rad4 c4+ Kb4 Qe4 Kc5 Qc2 Qh2 Qa4 Rh4 Ne2 Qh3 c3 Rg4 c2 Rf4 Nc3 Bb6 Qa8 Ba7 c1Q Kb6 Qcc2 Qa6 Rc5 Qb5 Qac8 Na5 Qcc7+ Ka6 Qd3 Bb6 Nb7 Ka7 Nd8+ Ka8 Qdc4 Ba7 Qd3 Qc6 Qa6 Qb5 Qcc8+
Rn5r/NK1pR3/B3NB2/4B2q/1qbq1QPr/2R1qQq1/1kqPbn2/7B w - - 0 1 legal: proof: b4 g5 f4 e5 c4 exf4 h4 gxh4 a4 b5 cxb5 Bc5 a5 Bb6 axb6 Qf6 Rh3 Qe7 Rh1 Qd8 Kf2 Ke7 Kf3 Kd6 Ke4 a5 g4 c5 b7 f5+ Kd3 Kd5 e3 h5 b6 h3 b5 a4 Bg2+ f3 Bf1 h2 Ba3 f2 Nf3 h4 Qe1 h3 Qe2 f4 Nd4 f3 Bb2 a3 Ne6 a2 Na3 Rh4 Re1 a1Q Bf6 Qe7 Rc1 Qe5 Rc3 Qg3 Bg2 Qed6 Re1 f1Q Bh1 Qff2 Qf1 Qdf4 Qg2 Qb4 e4+ Kd6 e5+ Kd5 Re4 Qe1 Qe2 f2+ Qe3 Qa1 Qf3 f1B+ Ke3 Na6 b8R c4 b7 Be2 b6 Qab2 Be7 Nf6 Nb5 Qa1 Na7 Qaa3 Rf4+ Ne4 Rf7 Qab3 Bf6 Q3a3 Bg2 h1Q Re7 Qha1 Bh1 h2 Nf8 Kc5 e6 Qh3 Kf4 Nf2 Ke5 Qab3 Nc6 Kb5 Na7+ Ka4 Kd4 Ka3 Kd5 Nc5 Kd6 Kb2 Kc7 Q3a3 Re8 Qg1 e7 Qhg2 Ne6 Qg3+ Qf4 Qe3 Qf3 Qga1 Rf8 Qab3 e8B Qg1 Bf7 Na6+ Kd8 Qd4 Re8 Qg3 Re7 Q3a3 Bg6 Qab3 Bd3 Qc2 Ra3 c3 Bb5 Qce4 Bc4 c2 Rc3 c1Q Bd3 Nc5 Bb5 Qee3 Ba6 Qh3 Kc7 Qc2 Nb5 Ra7 Ra8 Qg3+ Kd8 Bc4 b8Q Rb7 Qe5 Rb8 Kc7 Bb7 Qd6 Rbh8 Na7 Bc6 b7 B6b5 b8B Be2 Qdf4 Bbc4 Bb5 Na6+ Kb7 Rc8 Qg5 Rch8 Bbe5 Nb8 Qgf4 Qbc5 Bg2 h1Q Ba6 Qhb1 Bh1 Qa5 Bd6 Qh5 Bc7 Qa1 Bd6 Qaa5 Bde5 Qb4+
1k2nr1B/4p3/qKB1q1QP/N3b3/NnNQ2nN/n3P1Rb/bQ2q1R1/6n1 w - - 0 1 legal: proof: d4 c5 g4 cxd4 a4 b5 axb5 h5 Ra5 hxg4 Ra2 Na6 Ra1 Nb8 f4 g5 Qd3 a5 Qe3 g3 Qd2 g4 Qd3 Rh5 Qd1 Rg5 fxg5 Ra6 Bf4 Rh6 Bc1 Rh8 Kd2 d5 Kd3 Kd7 b4 Kc7 c4 f5 h4 f4 c5 g2 e3 f3 g6 f2 c6 g3 g7 a4 h5 a3 h6 a2 Nd2 Qd7 Rh2 Nf6 g8Q Ne8 Ngf3 g1N Nh4 g2 Qg6 Nh3 Bb2 g1N Bg2 Bg7 Nc4 Na6 b6+ Kb8 b7 Rf8 b5 Be5 Be4 f1N Rg2 Qe6 Rg3 Nd2 c7+ Ka7 b8N Nb1 Rg2 Na3 b6+ Kb7 Rc1 a1Q Nc6 Ka8 N6a5 Nf2+ Kd2 d3 b7+ Ka7 Rg3 d4 Bc6 Qa2 Rc2 Ng4 Ba1 Bd7 c8N+ Kb8 N8b6 Nb4 Na4 Bc8 Kc1 Bd7 Rcg2 Qe2 Bc3 d2+ Kb2 d3 Kb3 Bc8 Bd4 Bd7 Qa1 d1Q+ Kc3 d2 Qb2 Bf4 Bh8 Qdf1 Kd4 d1B Kc5 Bb3 Qd4 Ba2 Kb6 Be5 Qh7 Nd3 Qde4 Qee1 Ka6 Qef5 Re2 Nh2 Qg6 Kc7 Qd4 Qf7 Ncb6 Bh3 Reg2 Ng4 Ka7 Qe6 Ka6 Qb4 Ka7 Qe2 Nbc4 Qb5 Bd5 Kd8 b8Q+ Kd7 Qbb6 Kc8 Be4 Qbc6 Qbb2 Qb5 Bc6 Nb4 Nd2 Qbc4 Kb6 Kb8 Qdc3 Qc8 Qd4 Q4e6 Ndc4 Qa6+
Qr4B1/Rbr5/qn1Rb1Qp/3PP1RN/r2p2Kb/2N1Q2r/1B3r1k/4Qn2 w - - 0 1 illegal: No proof kernel
1b2b3/2b4p/R1Qn1Nnn/nB1Pr1nn/1k4p1/q3N1P1/K4R1N/B2R1R1Q w - - 0 1 legal: proof: f4 d5 h4 b5 c4 dxc4 a4 e5 axb5 exf4 Ra4 a5 Ra2 g5 Ra3 g4 Ra1 Ra6 Nf3 Rg6 Ng1 Rg5 hxg5 Bc5 Qc2 Bb4 Qd1 Bf8 e4 Kd7 d4 Kd6 Kd2 c5 Kc3 f5 b4 f3 Kb2 c3+ Ka3 a4 d5 f2 g6 f4 g7 f3 b6 c2 b7 c4 b5 Kc5 e5 c3 g3 Nh6 g8R Qd6 b6 Bd7 e6 Nc6 b8R Ne7 b7 Be8 Nh3 Ng6 Bb5 f1N e7 f2 Rg1 Ne3 Re1 f1N Bd2 c1N Ba6 c2 Nc3 Nb3 Ng1 c1N Nf3 Na5 Ra8 Nd3 b8Q Ndf4 Nh2 Nef5 Qb7 Nh5 Ka2 a3 Qc6+ Kb4 Bb5 Bg7 Rc1 Be5 Rf8 Qc5 Rf7 Bb8 Ra6 Nd6 Rf2 Bc7 Bg5 Nd2 Bf6 Nf3 Ref1 Ng5 Qf3 Rf8 Rcd1 Rf7 Bh8 Rf5 Qh1 Re5 Bf6 Bd7 e8N Qa7 Ng7 Be8 Nf5 Qc5 Ne4 Qe3 Kb1 a2+ Ka1 Qb3 Ne3 Qa4 Kb2 a1B+ Kb1 Qa3 Bg7 Bd4 Nf6 Ba7 Bh8 Qd3+ Ka2 Bab8 Nd7 Re4 Ba1 Re5 Nf6 Qa3+
1Q5r/4n2p/N2p3B/q4qPQ/nRPb1N1q/k2B2R1/BrpKB1q1/6Qb w - - 0 1 illegal: No proof kernel
6Rq/k3pNQp/4B2R/1qNb1Pnr/BPN2n2/2r2p2/2pK2q1/b3B1QN w - - 0 1 illegal: No proof kernel
K1N3nN/n1b1Br2/3NP2R/q4b1B/4pp2/rq1RQ2N/b3N2P/2r1nk1N w - - 0 1 illegal: No proof kernel
1B1Q2n1/2n2Pp1/4bq2/2pN2nQ/BbK2BqR/2B5/1rP3pN/N2r1Bkq w - - 0 1 legal: proof: d4 b5 b4 e5 dxe5 h5 a4 f5 axb5 f4 g4 hxg4 Ra3 Ba6 Rc3 Bc8 Rg3 fxg3 Kd2 Ke7 Kc3 Ke6 f4 Kf5 h4 Ke4 e6 c5 e7 a5 e8B d5 h5 g2 f5 d4+ Kc4 g3 f6 d3 b6 a4 h6 d2 f7 Ke3 b5 Kf2 e4 a3 h7 a2 b7 a1N e5 Qg5 b6 Be7 e6 Ra2 Ba4 Nb3 Qh5 d1Q Rh4 Qdg4+ Bf4 Na6 b8B Nd4 b7 Bf6 e7 Rb2 e8N Nc7 Nf3 g1Q Nbd2 g2 Nh2 Nde6 Nb3 Bc3 Na1 Qh1 Nf6 Kg1 Nd5 Q5f5 Be8 Ng5 Ba4 Qf3 Bd2 Be6 Be1 Bb4 Bc3 Na6 Bbe5 Nc7 b8B Qf6 Bf4 Qg4 Bd2 Nh6 Bc3 Rd8 h8Q Rd6 Qc8 Ng8 Qd8 Bf5 Nb6 Rd1 Nd5 Be6
1r6/1qrRPk2/1rn1Rn1n/1RQRR2R/3P4/3b2BN/1Knn1b1b/1BR5 w - - 0 1 legal: proof: c4 d5 cxd5 e5 a4 b5 f4 exf4 axb5 Ba3 Ra2 Bb4 Ra1 Bf8 g4 f5 gxf5 Ne7 Nc3 Ng8 Ne4 h6 Nf2 h5 Ng4 hxg4 d4 g5 Kd2 c5 Kc2 a5 b4 a4 e4 f3 h4 a3 f6 a2 f7+ Ke7 b6 f2 b5 g3 b7 g4 e5 g2 h5 g3 e6 c4 d6+ Kf6 d7 c3 h6 Ra7 b6 Qc7 d8R Nc6 b8R Ra6 h7 Qb7 Nh3 g1N Bd3 f1N Qh5 g2 Rd5 Nf3 Bf4 g1B Re1 N3h2 Bg3 Nh6 Ree5 Bd6 e7 Bf5 Rd8 Nd2 Rd7 Rb8 h8R Bf2 Rc1 N2g4 f8R+ Kg7 Re6 Nf6 Rde5 Bc7 Rfd8 Bg6 Rdd5 Kf7 R8d7 a1N+ Kd1 Nhg4 Bb1 Nc2 Qf5 Bd6 Rh5 Nh6 Qg5 Bd3 Qf5 Qc7 b7 Rb6 Qg5 Rg8 b8R Qb7 Ra8 Rb8 Raa5 Bg1 Rab5 Bh2 Re3 Bf4 Re1 Be3 Qe5 Beg1 Qc7 Bf2 R1e5 Ra6 Qd6 Rb6 Qc5 N2b4 Rc2 Na7 Kc1 Be4 Qd6 Bd3 Rb2 c2 Qc6 Bh7 Rb3 Bd3 Kb2 c1R Qc7 Rcc6 Rc3 Rc4 Qd6 Rc7 Qc5 Nac6 Rc1 Nc2
b3qr2/1Q2n1kB/1q1Br1N1/1Q3p2/Q2nQ2K/1q1p1PP1/2Q2R1b/RQ1b1n2 w - - 0 1 legal: proof: d4 b5 c4 e5 h4 d5 a4 g5 axb5 gxh4 Nd2 Nd7 Nb3 Rb8 cxd5 Ra8 d6 Nb8 d5 Nc6 Nd4 exd4 Bg5 Nb8 Bh6 Na6 Bc1 Nb8 e4 c5 b4 h5 e5 a5 e6 c4 e7 h3 b6 h2 b7 h4 b5 c3 b6 c2 Bd3 a4 Ba3 c1Q Nf3 h3 Rf1 h1N Ne5 h2 Bh7 d3 Ng6 Qc5 Qc2 Nc6 b8Q Nd4 b7 Ng3 Qc7 h1B b8Q f5 d7+ Kf7 e8Q+ Kg7 d6 Qb6 Qe4 Ne7 Qcb7 Qe8 d8Q Be6 d7 Bb3 Bd6 a3 Qb1 a2 Qdc7 Ra7 d8Q Bd1 Qcc2 Ra6 Qdd7 Qb3 Qa4 Rc6 Bc7 Re6 Bd6 Rg8 Kd2 Rh8 Ke3 Qb6 Kf4 Qb3 Re1 Nf1 Kg5 Qb6 Kh4 Rg8 Qbb5 Rh8 Rc1 a1Q Re2 Qb2 Ra1 Qb3 Rd2 Kh6 Re2 Bg7 Rd2 Be5 Re2 Bh2 g3 Bf3 Rd2 Rf8 Re2 Bh5 f3 Kg7 Ne5 Bf7 Rf2 Rf6 Ng6 Bd5 Qb1 Re6 Q8c7 Ne3 Qcc2 Nf1 Qbc7 Ba8 Qc8 Nec6 Qb7+ Ne7
3Q1n2/1QBQ4/1Q6/K2qp1qP/N2BRP1k/1b2Br1r/1qq2n2/bq1N2B1 w - - 0 1 legal: proof: c4 b5 a4 d5 axb5 g5 cxd5 f5 e4 Na6 exf5 Nb8 f4 h5 b4 g4 Ra3 Rh6 Rf3 Rh8 g3 Bd7 Bh3 gxf3 g4 Be6 g5 Bc8 Bg4 hxg4 d4 Kf7 Kd2 c5 Kc3 a5 h4 e5 b6 f2 b5 f1Q h5 g3 g6+ Kf6 b7 c4 b6 g2 d6 a4 Kb4 a3 d5 a2 g7 a1Q Ne2 g1Q Nbc3 Qff2 Na4 c3 Be3 c2 Nec3 Ne7 g8Q c1Q d7 Ng6+ d6 Qab1+ Qgb3 Na6+ Ka5 Qfb2 b8B Rg8 Ba7 Qg5 Re1 Nc5 Qf3 Qcd2 Qb7 Qdc2 Nd1 Nd3 Bg1 Nf2 Re4 Be7 Qd3 Nf8 Qda6 Qdc7 d8Q Q7c6 d7 Qd5+ Qb5 Rg7 Qe8 Rg8 d8Q Be6 Qec6 Rc8 Qcd7 Rc3 Qc5 Rh3 Qcb5 Qh6 Qc5 Rgg3 Qcb5 Kf7 f6 Qg5 Qc5 Rf3 Qcb5 Kg8 f7+ Kg7 Qc5 Kf6 Qcb5 Nh7 f8B Kf5 Qc5 Kg4 Qcb5 Ba3 Bc5 Qd6 Be3 Qd5 Rb4 Qda2 Qb7c6 Qbb3 b7 Kh4 b8B Bb2 Re4 Ba1 Qbb7 Qab2 Bc7 Nf8 Bad4 Qbc4 Qcd6 Qc6 Qdb4 Bb3 Q4b6 Qd5+
nn2BRq1/3B2Q1/5nK1/4k3/p2R2nB/P3bb2/NP1BQRp1/r1brn2R w - - 0 1 legal: proof: f4 b5 g4 h5 c4 bxc4 d4 e5 dxe5 g6 f5 Bh6 Na3 Bg7 Nc2 Bf8 Ne3 Na6 fxg6 Nb8 g5 Be7 Ng4 hxg4 Bg2 Ba3 Bf1 Bf8 Kf2 Ke7 Kg3 Ke6 Kf4 a5 e4 f5 h4 d5 h5 c5 g7 d4 g6 d3 h6 c3 h7 c2 Qe1 d2 Qd1 c4 Qe1 d1N Qe2 c3 Bh3 g3 Bd2 Nf2 Rf1 Nf6 Kg5 c1N g8R g2 g7 c2 Kg6 Bc5 Rf8 N2g4 Rf2 f4 g8R f3 a3 a4 Rg7 Bb6 Rd7 Bb7 Rd5 Nd3 Rd4 Ke7 e6 c1B e5 Ne1 Qe4 Ra5 Ne2 Rd5 Nc3 Ba8 Na2 Bc6 Rc4 Be3 Qd4 Ba8 Qa7+ Rd7 Rd4 Bc6 Re2 f2 Qb7 f1N Rf2 Ng3 Qc7 Ngh5 Qa7 Ng7 Qb7 Rg8 h8B Nge8+ Bg7 Rh8 Bh6 Nd5 Bg5+ Nef6 Bh4 Nb6 Qc7 Rh7 Qa7 Rf7 Qb7 Qe8 Qc7 Bf3 Qa7 Kd8 e7+ Kc8 e6 Na8 Rb4 Qd8 e8B Rh7 Qd4 Kc7 e7 Kc6 Qa7 Kd5 Rd4+ Ke5 Qb7 Nh2 Be6 Nhg4 Bf5 Rd6 Bfd7 Rh8 Qb3 Qc8 Qg8 Qc4 Qg7 Qg8 Rc4 Rd3 Rd4 Rh5 Bc3 Rd1 Bd2 Rh8 Rd6 Ke4 Re2 Nc2 Bg5 Re1 Rf1 Rh1 Ref2 Bf4 Bh4 Rg1 Bf7 Bg5 Bc3 Bcd2 e8Q+ Kf4 Ba5 Ra1 Qe2 Bc1 Bfe8 Rh1 Qd3 Bh6 Bd2+ Ke5 Rd4 Be3 Qe2 Bd5 Rf3 Rg1 Rh3 Bf3 Rf2 Rd1 Rh1 Ne1
3KR1qB/3BQQ1Q/b1nB3p/b2pB2r/3Q2PP/8/n1q1kr1R/nNqq4 w - - 0 1 illegal: No possible last move
5R2/1Q2Q1Q1/Rbb3b1/1Pn1rbRK/2N3P1/1Qp5/nR1qNk2/r2qR2b w - - 0 1 legal: proof: f4 b5 a4 g5 axb5 e5 fxe5 c5 h4 Qa5 hxg5 Qc7 b6 Qd8 b4 Nc6 c4 Nb8 e3 Nh6 b5 Ng8 Ba3 d5 Bb4 cxb4 c5 Bf5 Be2 Bc8 Bc4 dxc4 Kf2 Ke7 Kg3 Ke6 Kg4 Kd5+ e6 Ke4 d4 h5+ Kh4 a5 g4 f5 d5 b3 e7 a4 e8Q+ Ne7 d6 f4 c6 c3 d7 b2 c7 a3 b7 f3 g6 f2 g7 f1B g8R a2 Na3 b1B Rh2 Na6 b8Q Bg2 Nh3 Nc5 Qb3 Kf3 e4 Nc6+ Rg5 Nb4 e5 Bh7 Ng1+ Kf2 e6 Ra6 Re1 a1Q e7 Qd1 Nc4 Ra1 Ne2 Na2 Qb7 Bh6 Qg6 Re8 Qg8 Bg7 Qh8 Bd4 Qg7 Qd2 Rb1 Be3 Rb2 Bd4 Rh1 Bge4 Re1 Bc6 Rg6 Qd1 Kg5 h4 Kh5 h3 Rg5 Rh8 e8Q h2 Qee5 Re8 Qd6 Re5 Qde7 Qg8 d8R h1B Rf8+ Bcf5 c8R Qd5 Ra8 Be3 Qe8 Q5d2 Ra3 Ne6 Ra8 Bb6 Qee7 Nc5 Ra6 Bg6+
N4Rr1/1Rb1B1Bk/P1K1Rn2/1PQ1rp1r/N4rbN/5P2/5npq/1n1B4 w - - 0 1 legal: proof: c4 a5 e4 e5 g4 h5 gxh5 b5 cxb5 d6 b4 axb4 d4 d5 dxe5 dxe4 Ke2 c5 Ke3 g5 h4 f5 a4 Kf7 a5 Kg7 h6+ Kh7 e6 c4 a6 g4 h5 c3 e7 c2 e8N b3 Qd4 g3 Qc5 g2 Ba3 c1R Nc3 b2 Na4 b1N Nf3 Be7 Nh4 Bd7 Kd4 e3 Kd5 e2 f3 e1R Be2 Bd6 Nc7 Rc4 Bd1 Rf4 Ra2 Re8 Re2 Nc6 Re6 Ne5 Re1 Rc8 Na8 Bc7 Rb6 Qe7 Rb7 Ng4 Re6 Nf2 Bb4 Qg5 Ba3 Rb8 Bb4 Qg3 Ba3 Bc8 Kc6 Nf6 Bb4 Qh2 Ba3 Kg8 h7+ Kg7 Bb4 Rhg8 h8B+ Kh7 h6 Rg5 Qc2 Rh5 Bg7 Rg8 Be7 Bd7+ Kc5 Be8 Qc4 Bf7 Kc6 Rbe8 Qc5 Bg6 Qc2 Rgf8 Re5 Rg5 Bd8 Bh5 Qc5 Kg8 Re3 Ree4 Be7 Bg4 Re1 Rh5 Re2 Rd4 Re6 Rd5 h7+ Kf7 h8R Re5 Bd6 Rb8 Rhe8 Rc8 Bdf8 Kg8 Be7+ Kh7 Rg8 Rd8 Re8 Rd3 Rc8 Rd8 Rcb8 Rh8 Rf8 Rg8
1q3R1N/bp1r1NRB/kBK1p3/b1p1Pb1r/nP5n/7q/Q3R1PN/B1q3n1 w - - 0 1 illegal: Other
qN1n1KB1/b3R3/1P1rPN2/2qb3N/k1rn1QBp/r3P2R/r3nQB1/8 w - - 0 1 legal: proof: b4 a5 h4 g5 hxg5 c5 a4 b5 d4 cxd4 f4 e5 fxe5 Bd6 Bd2 Nh6 axb5 Ng8 b6 Bc5 b5 Bf8 Bb4 axb4 Kf2 d5 Kf3 Kd7 Kf4 f5 c4 h5 g4 b3 c5 b2 g6 d3 g7 d4 b7 h4 g5 d2 e3 d3 g6 Nh6 g8B Nf7 g7 Ra3 Rh3 Nc6 b8Q Bb7 Nf3 Nd4 Bg2 Bd5 Qe2 d1R Nc3 b1N Ne4 d2 Ng3 Nc3 Qf2 Rc1 Nh5 d1R b6 Kc6 Qd6+ Kb5 c6 Ka4 c7 Qa8 c8B Nd8 Kg5 f4 Kf6 Nce2 Bg4 Rc4 e6 Rd3 Qc7 Bd6 Ne5 f3 Nd7 Rd2 Nb8 Rda2 Qf7 Bf4 Ke7 Bh2 Qg3 f2 Qff4 f1Q Kf8 Qc1 Qgf2 Rh7 Bf7 Qc3 g8N Qca5 Ngf6 Qc5+ Ke8 Bg3 Bg8 Rd7 Rg1 Rd6 Kf8 Bh2 Rb1 Bg1 Rb5 Bh2 Ra5+ Kb3 Ra7 Bg3 Re7 Ka4 Ra7+ Kb5 Qe4 Rc6+ Re7 Ka4 Na6 Bb8 Qef4 Ba7 Nb8 Rd6
BrNr1q2/1n6/Pp3p1Q/RP2NQ2/b4b1n/1P2q1k1/BQp4N/KRqr4 w - - 0 1 illegal: No proof kernel
N1N1B3/b5P1/1Qnn3p/B1B2N2/3bp3/Kq2pRrb/R1QPkPb1/3r3r w - - 0 1 legal: proof: e4 b5 c4 f5 a4 fxe4 axb5 d5 cxd5 g5 h4 gxh4 b4 Kd7 g4 Kd6 g5 Ke5 b6 Kf4 b7 c5 d6 a5 d7 e5 b5 e3 g6 a4 b6 h6 Nf3 e4 Ba3 c4 Qc2 c3 Kd1 h3 Kc1 h2 Nd4 Nf6 Bb5 Nc6 b8N Rg8 b7 Qb6 d8B Bc5 Nf5 Kf3 Na6 Ne8 b8Q Nd6 Nc7 Be6 Bb4 a3 Ra2 Bc8 Rg1 h1B Qa7 Rb8 Na8 Bg2 Rh1 Qb7 Bda5 Bd7 Qa6 Ba7 Qb6 Rbc8 Ba4 Ke2 Bc5 Rg7 Rh3 Rcg8 Qd8 Qb3 Qb6 Be6 Rf3 Rb7 Rb2 a2 Na3 a1B Ra2 Bd7 Nc4 Bc8 Qb2 c2 Qb1 Bd4 g7 Rf8 Qb2 Rf6 Qc3 Rg6 Qb2 Rg3 Qc3 Nb5 Ncd6 Be6 Nc8 Nd6 Nh4 Beh3 Nf5 Qf7 Kb2 c1R Ka3 Rd1 Qc2 Qd5 Qd8 Rbb1 Qb6 Rh1 Bb5+ Qc4 Ba4 Rbd1 Bb5 Nb4 Bd7 Nc6 Be8 Qb3+
b2q2R1/p3r3/4PNQB/2PKNb2/1k5r/q1b1Rn1B/1p1p3P/1R1bnBQ1 w - - 0 1 illegal: No possible last move
B1QNQ1qn/1p3Pp1/1B1pn3/2R1Q1N1/1P1q3b/Rr3Bn1/n2Pn3/2rk3K w - - 0 2 legal: proof: e4 a5 g4 f5 exf5 h5 b3 hxg4 Ba6 a4 Bf1 d6 Ke2 Be6 Ke1 axb3 Bg2 b2 Bf1 Bb3 cxb3 Rh6 Bd3 Rh5 Bf1 Rh8 a4 Kf7 f4 Kf6 Kf2 e5 Kg2 c5 h4 e4 h5 c4 b4 g3 h6 e3 a5 c3 h7 e2 a6 e1Q a7 c2 Ba6 Nd7 Be2 Nh6 Nh3 Rc8 a8B Be7 Nc3 b1N Bb2 c1N Ra3 Nc5 Ng5 Nf7 Bf3 Ne6 Ne2+ Nc3 Rh5 Qg8 Nd4 Qf2+ Kh1 N3e2 Nc6+ Qd4 Qe1 Na2 Nd8 Rc1 Bc3 Qe5 Bd4 g2+ Kh2 g1N Bb6 Qd4 Kg2 Qe8 Kh1 Rf8 h8Q Ng3+ Kg2 N1e2 Qg8 Nf1 Kh1 Nh8 Qg3 Nc7 Qc4 Ne6 Qc8 Rf7 Qf2 Qg8 Qe3 Bf8 Qec3 Rc7 Qe3 R7c3 Qe4 Rb3 Qe5+ Ke7 Qc4 Kd7 f6 Be7 f7 Bf6 f8Q Nfg3+ Kg2 Be7 f5 Bf6 Nh3 Bg5 f6 Bh4 f7 Qe4 Bf2 Qd4 Qcb5+ Kc7 Qbe8 Kb6 Ng5 Nc5 Nc6 Kb5 Nd8+ Kc4 Kh2 Kd3 Bg1 Nf1+ Kh1 Kc2 Be3 Ne6 Bf2 Qc4 Bb6 Qg4 Qfe7 Qd4 Q7d7 Kd1 Qc8 Bf2 Rh4 Be1 Rf4 Bh4 Re4 Qc5 Rc4 Qd4 Rc5 Ng3+
1B1R2rq/N3K1kp/BP1R2Bb/2Q3p1/rq2n1n1/1p3pP1/1P1nb2n/1QR2N2 w - - 0 1 illegal: No proof kernel
n1b1r2K/pq1pp1RN/3q1b2/Bn1R1R2/1R3PN1/Rbp1QB1n/P2P4/2kr4 w - - 0 1 illegal: No possible last move, all moves rejected
2Nb1qK1/n1brN2r/5b2/3P1N2/3N1nB1/2QBrP2/k1P1RBbb/4Rr2 w - - 0 1 legal: proof: e4 d5 h4 c5 b4 b5 bxc5 g5 a4 gxh4 axb5 f5 exf5 Qd6 Qe2 Qd8 Qe4 dxe4 Ke2 Kd7 Ke3 a5 Kf4 h5 Ke5 e3 g4 h3 d4 a4 f6 e2 d5 e1B f7 h4 f3 a3 b6 a2 g5 h2 b7 h3 g6 Nc6+ Kf5 e5 b8Q e4 g7 e3 Kg6 e2 Qb6 Ba5 Bd2 e1B Bb5 Bh4 Bc1 Bd6 Qa6 Qf8 Be3 Bhd8 Ne2 Nf6 g8B Nh5 Rc1 h1R Ng3 h2 Qb6 Rf1 Nd2 Ra7 Nb3 Rh7 Nd4 Rc7 Ba6 Na7 c6+ Ke7 Rcb1 Bh3 Qb2 Rd7 c7 Be5 Qb3 Kd6 c8N+ Kc5 Bd3 Bac7 Qb2 Re1 Bf2 h1R Rd1 Rhf1 Rd2 Re3 Re2 Bg2 Rae1 Bf4 Qa1 Kb4 Qb2+ Ka4 Qc3 Qc5 f8N Qc6+ Be6 Bfd6 Nb3 Ka3 Bg4 Qb6 Nf5 Bh2+ Ne6 Qd6 Nfe7 Qf4 Ng7 Qh6+ Kf7 Nf4 Kg8 a1B Qf6 Ka2 Ngf5 Bae5 Qc6 Bh8 Qc3 Bf6 Nbd4 Qf8+
bk4b1/2qR3R/3rNB2/2p3rp/1bPP1Q2/5BRR/qNrr1pNP/6K1 w - - 0 1 legal: proof: f4 b5 g4 f5 a4 e5 axb5 d5 Bh3 d4 Bf1 Nd7 Ra4 Nh6 Ra1 e4 e3 Ne5 fxe5 dxe3 Ra4 f4 Ra1 Nf5 gxf5 Bd6 Qg4 Bb4 Qd1 Bf8 b4 Kd7 c4 g5 d4 c5 b6 h5 b7 Kc7 b8R a5 f6 a4 e6 g4 f7 f3 e7 a3 e8R g3 b5 a2 b6+ Kd6 b7 Kc7 Qd2 g2 Nh3 g1R Nc3 e2 Kf2 e1R Nd1 Rh6 Be2 Rg5 Rg1 Rd6 Rg3 Bh6 f8N Be6 Nb2 Rd1 Nf4 Bg8 Ng2 Qe7 Qf4 Rd2 Red8 Ra3 Qh4 Rc3 Kg1 Rcc2 Rb1 a1Q Ne6+ Kc6 Ra8 Qc7 Rd7 Qa2 Ra3 Kb6 Rc3 Ka7 Rh3 Kb8 Qf2 Rd3 Bf4 Rdd2 Be5 Bg7 Bf6 Bh6 Qh4 f2+ Kf1 Bf8 Rcg3 e3 Qf4 Be7 Bf3 Bd8 Rh7 Qc8 Rd7 Ba5 Qf5 Bb4 Ra1 Ka7 Qf4 Qc7 b8Q+ Ka6 Qe8 Ka7 Qe7 Kb8 Qf7 Qb3 Ra7 Qa3 Ne1 Qa2 Kg2 f1B+ Kg1 Bd3 Ng2 Be4 Qf8+ Qd8 Rh7 Ba8 Rad7 Qc8 Be2 Qd8 Qf2 Qc8 Qh6 Qc7 Bf3 Rg4 Qf4 Rg6 Bd8 Rg5 Bf6 exf2+
B2r4/nq2n3/2b1R1nr/1kb1P1n1/b2bN1BP/1P1K3N/N2BqB2/R1Qq4 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 c5 d4 cxd4 a4 e5 axb5 exf4 Kd2 g5 c4 a5 e4 d5 h4 Kd7 e5 f5 c5 d3 b6 Kc6 h6 d4 h7 f3 b7 f4 Bg2 a4 Bf1 g4 Qe1 f2 Qd1 a3 Rh3 a2 Ne2 f3 Nf4 g3 Nd5 g2 Qe1 g1N Nc7 Ne2 Nc3 Qd5 Nd1 Nf4 Rh1 Ng6 Be2 f1Q Nc3 f2 Na6 Bd7 Bf3 N8e7 Ne4 Kb5 Nb4 Nbc6 b8B Na7 Rg1 Qb7 c6 Be8 c7 Bc6 Rg5 Qh1 c8B f1N+ Kd1 d2 Ke2 d1B+ Kd3 Nh2 Bd2 Qg1 Bcg4 Ba4 Qc1 Qe1 Bd6 Rb8 b3 Rd8 Bg2 Nf3 Bc5 Qa8 Rh5 Qb7 Rh6 Ng5 B2f3 Ng8 Bb6 Bc5 Bh1 N8e7 Bg2 Rhf8 h8N Rf6 Nf7 Rfd6 Rb1 a1B Na2 Nh8 Re6 Nhg6 Kc2 Bc3 Ra1 d3+ Kb1 Nf3 Nfg5 B3d4 Nh3 Ng5 Bc3 d2 Kc2 Rh8 Kd3 d1Q+ Bd2 Rdd8 Nef2 Be8 Bd5 Rh6 Ne4 Qc8 Ba8 Qb7 Ba5 Bc6 Bc3 Qf3+ Be3 Qfd1+ Bcd2 Nd5 Bg1 Nde7 Bf2 Qee2+
q2BR2R/1b5p/1P1Pb3/rn1B1qnP/6Rr/4b2Q/Rb1K2N1/Nk2rBn1 w - - 0 1 legal: proof: e4 b5 b4 c5 bxc5 g5 a4 d5 axb5 dxe4 f4 gxf4 g4 Kd7 h4 Ke6 c4 Ke5 h5 Kd4 g5 e5 b6 a5 g6 f5 g7 e3 d3 e4 c6 f3 c5 f2+ Ke2 a4 c7 a3 c6 a2 Na3 Kc3 d4 f4 d5 Ra5 d6 Na6 Qa4 f3+ Kd1 Nf6 g8R Be6 c8B Nc7 Bh3 f1B Bd7 e2+ Ke1 Bg2 Rg4 Bh6 Qb5 Re8 Qg5 Nb5 c7 Qa8 Qg6 Be3 c8R+ Kb3 Bd2 Kb2 Bc6 Re7 Rh2 Rea7 Rc1 a1B Qf5 Ka2 Rf8 Bb2 Nc2 Ra4 Rd8 R7a5 Na1 Bh1 Rc3 Kb1 Bf1 Bd4 Rgg8 Ba3 Rh8 Bg2 Bg5 f2+ Kd2 e1N Rh4 Rc4 Rb3+ Bab2 Be2 f1Q Qh3 Qf5 Rde8 Bc5 Bf1 e3+ Ke2 Nf3 Ra3 Rd4 Ra2 Ne4 Bd8 Neg5 Bb7 Rf4 Kd1 Re4 Ne2 Ng1 Nf4 e2+ Kd2 e1R Bc6 Bf3 Ng2 Rf4 Rg4 Rfa4 Rg3 Rh4 Rg4 Bf2 Bd5 Bfd4 Bb3 Bb7 Bd5 Be3+
1Nrrn1k1/1r2bRrN/2Bq2b1/3N1n2/p2bPBn1/6Nn/P1Q4P/R2B2K1 w - - 0 1 legal: proof: f4 c5 g4 h5 c4 hxg4 b4 d5 bxc5 e5 cxd5 exf4 Kf2 a5 e4 f5 d4 Kf7 c6 b5 c7 g5 d6 f3 d7 a4 d5 f4 d6 g3+ Ke1 b4 Bd3 f2+ Kf1 b3 Qg4 b2 Qf5+ Nf6 Ba6 g4 Bd2 g2+ Ke2 f1R Qb5 f3+ Ke3 g3 Ne2 g1B+ Kf4 g2 Kg3 f2 Bb7 Nc6 Qc5 Ne5 Nbc3 b1R Nd5 Be7 Qc2 Rfe1 Bh6 f1N+ Kh3 Bc5 Rg1 Ng3 Rf1 g1N+ Kg2 Rg8 Rf5 Nh3 Bf4 Rb8 Ba8 Rh1 Bb7 Nf2 Ba8 Ba6 c8B Bb5 Ba6 Qc7 d8N+ Kf8 d7 Rc8 Nc6 Bd4 d8N Qd6 Nb8 Be8 Bc6 Rb7 Ne6+ Kf7 Rh5 Nf5+ Ng5+ Kg7 Bd3 Bf7 Ba6 Rgd8 Rh7+ Kg8 Bd3 Bh5 Rf7 Ne8 Nh7 Rhb1 Bdb5 Rb3 Bc4 Rg3+ Kf1 Rg5 Ng3 Rg7 Be2 Neg4 Bd1 Bg6 Kg1 Nh3+
2qN2N1/4K1bB/3nq1bP/Qp1N1PRb/1P2q3/Bq2RbBq/3kBn2/5r2 w - - 0 1 illegal: No possible last move, all moves rejected
3Q1b1q/rp3b1K/n2qBr1b/4kNPR/P1Bnpn1N/5R2/2bNPR2/3R4 w - - 0 1 illegal: No possible last move
4B2N/N1pn1R1b/2BBbp1k/1P6/K1R1Qrnr/p3r2P/1P2B2N/q4bb1 w - - 0 1 illegal: No proof kernel
3N2Rr/2B1K3/Rn1bnNbp/2nq1p2/Bn3b1Q/6b1/1P1R1P1P/1Nk1rRr1 w - - 0 1 illegal: No proof kernel
2b1r2b/2n2Rq1/1N1ppB2/K1R2rp1/1R5q/bBn1PkP1/PB3B2/r2N1Qr1 w - - 0 1 illegal: No proof kernel
1kr2B2/2pnq3/Kp3P2/bQ3Q2/8/PBRr3b/pNP1rR2/B2qN1qB w - - 0 1 legal: proof: e4 f5 exf5 g5 d4 e5 dxe5 Na6 h4 gxh4 Bg5 Nb4 Bc1 Nxa2 Bg5 a5 Be3 a4 Bc1 a3 Bg5 Nc3 Bc1 a2 Nh3 Nb5 Ng1 Na3 bxa3 Ra6 Bb2 Ra5 Bc1 Ra8 Kd2 d5 Kc3 Kd7 g4 h5 f4 h3 e6+ Kd6 Kb4 d4 Kb5 b6 f6 h2 e7 h4 e8Q h3 f5 d3 f7 d2 g5 Rb8 f6 Qe7 g6 Qe6 g7 Qe7 Bg2 Nh6 g8B Ng4 Bb2 Ne5 Qf3 d1R Nd2 Nd7 Qf5 Rh4 Bc6 Re4 Ngf3 Re2 Ne1 Bh6 Rg1 h1Q f8B h2 Rg3 Qg1 Rc3 h1Q Bb3 Be3 Rc1 Bc5 Bg2 Bb4 Ba1 Ba5 Bb7 Qf3 Ka6 Qd5 Nc4+ Kc5 Ng2 Rd3 Nb2+ Kd6 Rf1 Qdd4 Rf3 Qd1 Kb5 Q4g1 Ne1 Ra8 Rf2 Rb8 Bh1 Ra8 Ng2 Rb8 Kc4 Kc6 Qeh5 Kb7 Kb5 Ra8 Ne1+ Kb8 Qhg5 Bb7 Qh5 Bg2 Qhg5 Bh3 Qh5 Ka7 Qhg5 Re8 Qh5 Kb8 Ka6 Rc8 Qb5 Rd4 Qhf5 Rd3
nB3bQ1/KRBNrrqB/2P1n1b1/1n6/1R1N1P2/1Pq5/4b2n/2rBQq1k w - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Ke2 Kf7 Kd3 Kf6 Kc4 Ke5 Kc5 Ke4 g4 h5 c4 a5 f4 d5 g5 h3 b3 a4 g6 a3 f6 h4 f7 h2 b6 e5+ Kb5 a2 g7 d3 c5 h3 b7 d2 c6 d4 Ne2 Kf3 Rg1 h1Q Qe1 d1N Rg2 h2 Ba3 d3 Rg5 d2 Rg6 e4 Ng3 e3 Bd6 e2 Bc7 Bf5 Kb6 Qd4+ Kb5 Qc3 Kb6 Ne7 g8B Nd5+ Kb5 Nb6 Rg7 Ra7 Bh7 Na6 b8B Bg6 Bg8 Na8 Be5 Nc5 Nh5 Rh7 Nf6 Ne6 Bed6 Re7 Ka6 Qg1 Nd7 h1R Bh3 Qf1 Bg4+ Kg2 Na3 Kg1 Rc1 a1Q Ka7 Kg2 Rc2 Rg1 Ra2 Kh1 Nb5 Qab2 Ra4 Qa1 Qf2 e1N Nd4 Nf3 Qe1 Nh2 Bh5 Qcc4 Bdc7 Nc3 Bd1 Nb5+ Ka6 Qb2 Rb4 Qcc3 Kb7 Rh5 Bh7 Rf5 Bc2 d1B Ka6 Be2 Bd1 Re8 Kb7 Be7 f8Q Rf7 Qg8 Bf8 Ka6 Ree7 Kb7 Rg5 Ka6 Rc5 Kb7 Qcd2 Ka6 Rc1 Kb7 Qdc3 Ka6 Nd6+ Ka7 Qcc2 Nb6 Rf5 Nf3 Re8 Bd8 Qc5 Rf7 Qg7 Nd4 Qc3 Rb7 Re7 Nd7 Rff7 Bdc7 Nb5+
n7/2b1k2p/r5rN/P2Qq1rP/p1KP1rRr/1Rr4R/3bnQB1/RN4B1 w - - 0 1 illegal: No proof kernel
1k1rb2N/4pBnN/4pN2/1b2RP1Q/1n1pb2K/2Qpr1pR/N3P1PB/1q6 w - - 0 1 illegal: No proof kernel forced: bxLB
2B2q2/rbP2B2/1b3Ppp/n4Rp1/1npP1K1Q/1k2BR1q/N2R4/1q3Q1B w - - 0 1 illegal: No possible last move
B1b5/1BNr1nqP/2B3pb/2Kp4/3NR1nR/k2BrrN1/2p2P1P/1B2n3 w - - 0 1 illegal: No proof kernel
Bq1b3R/1Pb3N1/1BP2pNP/4pBNp/4r3/R1np4/1KN4b/3k2Bb w - - 0 1 legal: proof: d4 e5 f4 b5 a4 Ne7 axb5 Ng8 d5 Na6 d6 cxd6 Ra3 Nb8 Ra2 Qe7 Ra1 Qd8 fxe5 Ke7 e4 Ba6 e6 Kf6 e7 Bc8 Ne2 Ke5 Ng1 Ke6 e5 Ba6 Qh5 Bc8 Qe2 Kd5 e6 Kc5 Qe5+ dxe5 Ra4 Kd5 Ra1 Kd6 g4 h5 g5 a5 Ne2 Ra7 Bh3 Rc7 Bg2 Rc4 Bf1 Rf4 Ng1 Rf6 h3 Na6 h4 Nc5 Ke2 Ne4 Ke1 Rfh6 gxh6 g5 Nh3 g4 Ng1 Ng5 hxg5 Kd5 Ne2 Kc5 Ng1 Kd6 Kd1 Kc5 e8B Kb4 c4 Kb3 g6 d5 c5 g3 g7 g2 e7 a4 b6 f6 b7 a3 b8B a2 Bg6 d4 e8N d3 Na3 Bb7 Nc2 Be7 Bc7 Qa8 Bf5 Ba6 Nh3 g1B Be3 Qf3+ Kc1 Qb7 Ng5 Bf2 Bb6 Bg3 Bg2 Bh2 Bg1 Qb8 Ba8 Bd8 c6 Bc4 Rb1 Ne7 g8N a1B Ng7 Nd5 Ne7 Nc3 Ng6 Re8 Bgd4 Rg8 Bg1 Bg3 Rh4 Bd5 Ra4 Bh2 Ra6 Bh1 Ra3+ Kc4 b4 Bc7 b5 Rd8 N5e6 Rd4 Ng5 Re4 Bbd4 Bd8 b6 Bc7 b7 Bd8 Rb5 Bc7 Rd5 Bd8 Ra7 Kb3 Bb6 Bc7 Rd8 Bb2+ Kd2 Ba3 Rh8 Be7 Kc1 Bed8 Ra5 Nd1 Kb1 Kc3 Ra3+ Kd2 Ka1 Nc3 Kb2 Kd1
6k1/2B2Rr1/1nP3q1/brPbN1rb/B1Bn2q1/N2K3P/P2QR1p1/1Nq2b2 w - - 0 1 legal: proof: f4 a5 g4 h5 gxh5 c5 d4 e5 dxc5 exf4 b4 axb4 Kd2 g5 e4 d5 c4 b5 c6 f5 e5 Kf7 h3 f3 h6 b3 h7 f2 Kc3 g4 Bh6 f4 Qd2 b2 Qc1 b4+ Kd2 b3 Nf3 g3 Bg5 d4 Rg1 g2 Bd3 f1Q Bh6 Ra5 Ne1 f3 Be2 f2 Be3 d3 Qc2 Nd7 Bh6 Bb4+ Qc3 Qh4 Nc2 Ne7 Bg7 Qg4 Nca3 Nf5 Bd1 Rg8 c5 Nd4 Bf8 Rb5 Bd6 Ba5 Bc7 Rg5 h8N+ Kg8 e6 Nb6 e7 Be6 e8B Bd5 Rh1 Qg1 Nf7 f1B Qb4 Qe3+ Kc3 Qee6 Ne5 d2 Bg6 Qf7 Bd3 Qg6 B1c2 d1B Bc4 Qd7 Kd2 Bh5 Ke3 Qg4 Qd2 Bd3 Re1 Bf1 Nc3 b1R Re2 b2 Ba4 Re1 Rc1 b1Q Rc2 Qb2 Ncb1 Rd1 Rf2 Qa1 Rf7 Qb2 Qc1 Rd2 Qd1 Rf2 Re2 Qc1+ Qd2 Rf6 Rd7 Rd6 Rh7 Rd7 Rf7 Q6e6 Kd3 Qe8 Rf6 Rdg7 Rf2 Qee6 Rf7 Qg6+
R1Bb1R2/1b1n3p/rrP1B3/N1BPR1Pk/K2q1np1/2rn2p1/Q4P2/2n4N w - - 0 1 illegal: No proof kernel
B1q2b2/2NR1p2/3b1BRp/1p1N1P2/bR1PK1PP/2nQ2r1/3q2p1/2nBb2k w - - 1 2 illegal: No proof kernel
QB1r1R2/rPrB1N1b/Q1p1n1K1/P2r1nN1/1P1n3k/R4P2/1r2Br2/q7 w - - 0 1 legal: proof: c4 a5 h4 f5 e4 g5 exf5 gxh4 b4 b5 cxb5 c6 d4 a4 d5 Bg7 Qb3 axb3 d6 Bd4 Na3 Bb6 Nb1 Bc7 dxc7 Ra6 Kd2 Ra5 Ke1 Ra8 Ke2 Kf7 Ke3 Kf6 Ke4 h5 g4 d5+ Kf4 e5+ Ke3 Kg5 a4 d4+ Kd2 d3 Ke3 e4 f3 d2 a5 d1R b6 b2 b7 h3 f6 h2 f7 h4 f8Q h3 Nc3 b1R Na2 Ra7 Bd2 Qf6 Qd8 Nh6 Nc1 Na6 Ra3 Rb2 Nd3 Nc5 Be2 Be6 c8B Kh4 g5 Bg8 g6 Nf5+ Kf4 e3 g7 Ne6+ Ke4 Rf1 Ne5 Rf2 Nf7 Rh5 Qd3 Rg5 Bd1 e2 Qa6 e1N Bd7 Nc2 Bf4 Ncd4 Bb8 Rh5 Ne2 Rh8 Nc3 Rh7 Rg1 h1R Be2 h2 Rg5 Rd1 Rg6 Qg5 Rf6 h1R Ke5 Qd2 Ne4 Qc1 Neg5 Qa1 Ke4 Nh6 Rf5 Rd3 Ke5 Rhd1 Kf6 R1d2 Kg6 Rd1 Rf6 Nhf5 Ne5 Nc2 Rf7 Rd5 Rf8 Ncd4 Kf6 Bf7 g8Q Rdd2 Qh8 Bg8 Kg6 Rd3 Qf6 Rf7 Qd8 Re7 Nef7 Rdd2 Be8 Rc7 Bd7 Nb3 Be8 Rb5 Qc8 Rd8 Bd7 Ra8 Ba7 Rd5 Qb8 Nbd4 Bb6 Rcc8 Bc7 Ra7 Bd6 Ne3 Qa8 Nef5 Bb8 Rc7 Bd3 Qe1 Bb5 Qa1 Be2 Bh7+
1n2q2k/3N2Rr/2B1n2Q/4b1P1/3PP1r1/NP4bK/nrpR1QBr/3n2Bb w - - 0 1 illegal: No possible last move
qqN3Qq/R1Br1nnr/2q5/1Q1B3r/Pp2b3/NPP3p1/1P3K2/B1krR3 w - - 0 1 illegal: Other
B1Q1q3/R6n/2pk1N1B/5R2/1n1NBPr1/1nP1nB1n/r1P1bb1P/qK1b4 w - - 0 1 illegal: No possible last move, all moves rejected
2nb2rN/P2nr1RP/3b1kNK/R1qp1P2/2P1B3/N7/n2n1q1Q/N3nbB1 w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 c5 d4 h5 gxh5 cxd4 Kd2 Kf7 h4 d5 a4 e5 f4 g5 c4 b5 h6 e4 f6 e3+ Kd3 e2 h7 b3 h5 b2 h6 b4 a5 b3 a6 g4 a7 g3 Qe1 g2 Qb4 Qa5 Qd6 Ne7 Nf3 g1B Be3 Bh3 f5 Nd7 Qh2 Re8 Ne1 Rg8 Bg2 Nc8 Nc2 e1N+ Ke2 Bf2 Rg1 Qc5 Ra5 Bh4 Nba3 b1N Be4 Bd6 Na1 Nc3+ Kd2 d3 h8N+ Kf8 f7 Ke7 f8N b2 h7 b1N+ Kc1 Bf1 Rg5 Na2+ Kd1 d2 Bg1 Qf2 Rg7+ Kf6 Qh1 Ke5 Qg2 Bd8 Nfg6+ Kf6 Qh3 Qc5 Qh2 Bg2 Ke2 Re7 Be3 Bf1+ Kf2 Re5 Kg3 Re6+ Kg4 Re7 Bg1 d1Q+ Kh4 Qdd4 Kh5 Qf2 Kh6 Nd2
1nRN4/1NQ4q/P2qqq1p/3R1Bbk/6nn/1R2PP1P/Kqr5/1Rr1B2q w - - 0 1 illegal: No possible last move, all moves rejected
RK2RN2/PbN1P1Br/1r4nQ/1B1q1k2/3PnN2/r1p1p1P1/n2N4/1r2br2 w - - 0 1 illegal: No proof kernel
2n1n2Q/n2K2b1/pBR5/1RpqPRpB/r5bq/1QP1r2b/3P1BPk/4N3 w - - 1 2 legal: proof: h4 d5 f4 b5 a4 g5 axb5 d4 h5 d3 c3 e5 Na3 exf4 Nc2 dxc2 Rh4 Qf6 Rh1 Qg6 hxg6 Bg4 Ra3 Bf5 Ra1 Bc8 Kf2 Kd7 Kf3 Kd6 Ke4 f5+ Kd4 h5 e4 c5+ Kc4 Ke5 b4 f3 b6 Kf4 Kb5 Kg3 b7 f2 g7 f4 Qe1 f3 Ra3 h4 Qe2 h3 Qd1 h2 Be2 f1Q Ra6 f2 Ba3 c1Q Qb3 Ne7 g8Q Rh3 Nf3 Nbc6 b8R Qce1 Qh8 Bg7 Rg1 h1N Rab6 Qb1 Ne1 Qa2 Ra6 Bd7 Rf8 Nc8 Rf5 Kh2 Rb6 Ng3 Ra6 Na5+ Rc6 Nh5 Rh1+ Kg3 Rg1 Nf6 Rh1 Qg1 Bh5 Qh2 Rf1 Ne8 Rh1 Ne7 Rg1 a6+ Kb6 f1B b5 Rd8 Bb4 Be2 Rgf1 Nf6 Kc7 Nc8 b6 Bg4 b7 Qh1 b8B Kh2 Rg1 Re3 Rgf1 Be6 R1f4 Rd4 Rf1 Nc4 Ba5 Na7 Bb6 Nd6 Rg1 Nfe8+ Kd8 Bd5 Kd7 Ra4 Rf1 Bc4 Rf4 Ndc8 Be5 Bb5 Bd4 Bh3 e5 Be2 Re4 Beg4 Rf4 Re4 Bf2 Re3 Rb4 Rg3 Rb5 Re3 Nc2 Qe1 Bh4 Qg3 Ne1 Qf4 Bf2 Qg3 Qb1 Qh4 Qc2 Qg8 Qb3 Qd5+
Q3B1rn/1P2kP1K/rR1b3p/5Pqb/3QBP2/1n1Q2N1/1p1Rr2b/Q7 w - - 0 1 legal: proof: e4 g5 c4 d5 cxd5 Bg7 h4 Bh6 hxg5 Bf8 f4 f5 exf5 Nh6 g3 Ng8 f6 Qd6 f5 Qf4 gxf4 a5 b4 Bd7 b5 Be6 Ba3 Bc8 Bb4 axb4 a4 b6 a5 Nh6 a6 Rg8 Na3 Rh8 Nc4 Ng8 Na5 bxa5 Kf2 c5 Kg3 e5 Kg4 a4 Kh5 h6 Kg6 a3 d4 b3 d6 e4 b6 e3 b7 b2 a7 c4 d5 a2 Qb1 c3 Ne2 c2 Rh2 c1R Bg2 Re1 Be4 Be6 Ng3 Na6 Rd2 e2 d7+ Kd8 Qd1 Bd6 Kg7 Nc5 g6 Nb3 Rc1 a1Q Rc6 Qa5 Qa1 Ne7 Rb6 Rf8 Kh7 Bf7 g7 Bh5 g8B Ng6 Bf7 Nh8 Be8 Rg8 f7 Ke7 d8Q+ Kf8 Qc8 Ke7 Qc5 Qc3 Qb4 Qf6 Qd4 Qg5 Qd3 Rc1 Qd4 e1B Qd3 Rc2 Qd4 Rac8 a8Q R8c6 Qd3 Bf2 Qd4 Bg1 Qd3 Bh2 Qd4 Be5 d6+ Kf6 d7 Ke7 Qd3 Bd6 d8Q+ Kf8 Rb4 Ra6 Qb6 Ke7 Qbd4 Rc3 Rb6 Rc2 Rd1 Rg2 Rd2 Re2
3KQQ1b/2R1q1B1/rq1NN3/PbP2p1r/1R3P2/4k1qb/1N1nP2q/Nr4n1 w - - 0 1 legal: proof: d4 a5 g4 h5 gxh5 c5 dxc5 e6 b4 axb4 Bg2 Bd6 Bc6 Bf8 Bd5 exd5 Kd2 Ke7 Ke3 Ke6 Kd4 Kf5 c4 b5 h4 g5 f4 b3 a4 b2 c6 g4 c5 b4 c7 g3 a5 b3 h6 g2 h7 Bg7+ Kd3 d4 Kc4 Ke4 Kb5 d5 Kb6 d3 h5 d2 h6 d4 Rh4 d3 Rh1 Qh4 Ra2 Nd7+ Kc6 Qg3 Ra4+ Ke3 Nc3 b1R Rb4 b2 Nf3 g1Q Na4 Q1h2 Nd4 Ngf6 Nb3 Ne4 Na1 Ne5+ Kb6 Bd7 c8N Bh3 Kc7 f5 Nd6 Ra6 Qb3 Nf3 Qf7 Ng1 Qe8 Kf2 Kd8 d1B Qf8 d2 Qe8 Ke3 Qf8 Rg8 h8Q Bd4 h7 Rg5 Qhg8 Rh5 h8N Bb3 Qe6 Bc4 Qee8 Bb5 Nhf7 Bh8 Ng5 Kf2 Rd4 d1Q Rb4 Qd5 Ne6 Qb7 Bd2 Qf7 Bc3 Nd2 Bg7 Ke3 Qc6 Rc1 Qce8 b1Q Nb2 Qc2 Rc4 Qb3 Ra4 Rb1 Rb4 Bd7 Rb7 Qb6+ Rc7 Ngf3 Rc1 Bb5 Rc4 Ng1 Rb4 Qe7+
bnBR4/1r5k/1B2b3/2bK4/3NnQ1P/1pP1NR1P/Pp1rqP2/Rn1n3r w - - 0 1 legal: proof: e4 c5 d4 cxd4 b4 h5 g3 f5 exf5 h4 gxh4 a5 Bh6 axb4 Be3 Qa5 Bc1 Qd8 Kd2 Kf7 Kd3 b5 Ke4 e5 h3 d5+ Kd3 g5 c3 Kg7 f6+ Kh7 f7 e4+ Ke2 g4 Bg5 g3 Qd3 b3 Qd1 g2 Rh2 e3 Kf3 d3 Qe2 b2 Kf4 b4 Ke5 b3 Qd1 e2 Qc2 e1N Nf3 g1R Qd1 d2 Ba6 d4 Bh6 d3 Rh1 Nf6 Na3 Ne4 Bb7 Be6 Rb1 Ra7 Bc8 Rb7 Bf4 Qe8 Nd4 Bc5 f8R Nc2 Nc4 Na3 Ra1 Nb1 Qg4 d1B Be3 d2 Qf4 Bf3 Rf6 Rc1 Rd1 Qe7 Rf5 Rd8 Rf8 Rd6 Rd8 Bh1 Rg1 Re1 Rg3 d1N Rf3 Bg2 Nb5 Rg1 Bd4 Rh1 Ne3 Ba3 Bb6 Rd2 Nd4 Bc5 Qf6 Qe8 Qf8 Qb5 Qf4 Qe2 Nef5 Rc7 Rg3 Ng5+ Ne3 Ba8 Rf3 Ne4 Nc4 Rb7 Ne3 Bg4 Kd5 Be6+
2B1QB2/KpP2r1p/3P1rpN/1qqR2qb/7P/3P3r/1PR2B2/1N1knr1n w - - 1 2 illegal: No proof kernel
5b1K/1QRpR2q/5Q2/3P1Bb1/pNbnr1B1/PPPPq3/2n1pQ2/2rk3q w - - 0 2 illegal: No possible last move, all moves rejected
5B2/Pb1pnR2/1kBP1n2/1P4qB/1P6/RNr1nN2/2b2KPq/nqbrR3 w - - 0 1 legal: proof: f4 a5 h4 g5 hxg5 e5 b4 exf4 c4 b5 cxb5 a4 Qb3 axb3 e4 c5 d4 f5 a4 h5 g6 c4 e5 h4 g7 c3 d5 h3 a5 h2 a6 c2 a7 f3 e6 f4 e7 b2 Ra5 f2+ Ke2 f3+ Ke3 Nf6 g8R Nc6 Rg5 Bb7 Ra3 Bh6 Be2 f1N+ Kf2 Rc8 Rc3 Ne3 Bd2 c1N Kg3 f2 Re5 f1Q Re4 Nb3 Rf4 Na1 Nf3 Bg5 Rg1 h1Q Ra3 Qc1 Bd1 Qh2+ Kf2 Rh4 Rf5 Rd4 Re1 Rc7 Bc3 Rd2+ Be2 Rd1 Nbd2 b1B Nb3 Bc2 Bd4 Qb1 Bc5 Nd4 Bd6 Rc3 Bd3 Nc6 Be4 Nc4 Bc5 Bc1 Rf4 Ne3 Bd6 Kf7 Rf5 Qg8 Bc5 Qg5 e8B+ Kg7 Bf7 Ne7 Bh5 Kf8 Bd6 Qg6 Bc5 Ke8 Bd6 Kd8 Rf4 Nc6 Bf8 Kc7 d6+ Kb6 Bd5 Ne7 Bc6 Qg5 Rf5 Ne8 Rf7 Nf6
3n1k2/3P1Nn1/3pr1PN/Kqppp1b1/2BqR1pN/2RPn1PB/3Pr3/B7 w - - 0 1 illegal: Other
3rn3/1pK1N2Q/1P5p/P1P1n1B1/2P1pp1n/7k/prP1BnNN/NR4q1 w - - 0 1 illegal: No proof kernel
4b1Kb/2p4N/3PN3/r1PbPrnk/4pqRb/2RP4/rB1NP1Pr/1n3B2 w - - 1 2 illegal: Other
1n1r4/P1pn3p/B2q4/P1PPP1PK/3rp1B1/2b1b2Q/b2RP2b/b3kNN1 w - - 0 2 illegal: No proof kernel
4rnrb/p1p1p3/2nnNb2/P3P1qP/7N/1RPP1P1Q/1PP4K/1bk3Br w - - 1 3 illegal: Other
b1R4n/3p3N/Nkp1bB1K/1B1R3R/R5R1/p2b4/1Q1Q1bbR/1RqrQ3 w - - 0 1 legal: proof: d4 g5 b4 b5 h4 a5 hxg5 e5 a4 c6 c4 Bc5 f4 exf4 d5 Nf6 d6 Be3 c5 Ra7 axb5 a4 b6 Ra6 b7 Rb6 cxb6 Bc5 b5 Na6 Rh4 Nc7 dxc7 Ng8 Rh1 Bf8 Kf2 h5 Kf3 f5 b8Q h4 g4 h3 e4 h2 b7 Bc5 b6 Ba3 g6 Bf8 g7 Ba3 e5 Rh5 e6 Rh4 g5 Qe7 g6 Rh6 Bb5 Bb4 Na3 Qg5 e7 Rh7 Nh3 Ba5 Qd2 Qh4 Bb2 Rh6 Nc2 Qe1 Ng5 Qc1 Nh7 a3 Ra2 Bc3 Nb4 Bd4 Na6 Bf2 Bf6 Rh4 Rc2 Nh6 Rc4 Nf7 Ra4 Nh8 Rd1 Qc4 Rb1 Rg4 Rb2 Rg1 Ra2 Qf7 g8R+ Qf8 Rg7 Rd1 Rf7 Qg8 g7 Qf8 g8R h1B+ Rg2 Qh6 Rb2 Qg5 Rg7 Qh6 Rg4 Qg5 Rb1 Qh6 Ke2 f3+ Kd3 f4 Ke4 Qg5 Rh2 Bg2 Rh5 Qc5 Rh2 Qc1 Kf5 Bh3 Kg5 Bg2 Kh6 Bh3 Rg5 Be6 Rg1 Be3 Rg7 f2 Rg4 f1B Rh5 Bg1 Rb2 f3 Rc2 f2 Rcc5 Bf5 Rd5 Bg2 Rh2 Kf7 e8R f1B Ree5 B5d3 Reh5 Ke6 Qa8 Bc5 b8Q Bb7 c8R Bf2 Qaa7 Ba8 b7 Bc4 Qb6 Ba2 Qg3 Bd3 b8R Bb3 Qd4 Ba2 Qb2 Bb3 Rdf5 Ba2 Qge3+ Kd6 Qee1 Bad5 Nc7 Kc5 Re5 Bb7 Na6+ Kb6 Ref5 Bf7 Rd5 Be6 Qb1 Bgf1 Bc4+ Ka7 Qa1 Ba8 Rb1 Bg2 Bb5 Kb7 Qb2 Kb6
q1BnQK2/bbNN1Q2/bnRQ2N1/7B/k6p/bn4Rr/3B3B/1r1qB2N w - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 Ke2 Kd7 Kf3 h5 Kf4 c5 Ke5 a5 b4 c4 g4 c3 d4 c2 f4 e6 b6 a4 g5 a3 b7 a2 g6 h3 f6 h2 d6 Kc6 d7 h4 b5+ Kb6 f7 Ka5 b6 Bh6 Kd6 e5 f8Q e4 f5 e3 f6 e2 f7 e1Q g7 Nf6 g8B Qee8 d5 Na6 b8B Qe2 b7 Nb4 Bh3 Ka4 Na3 Qf2 Nb5 Qf1 Ne2 Qf3 Ng3 Qg2 Rg1 Bd2 Nh1 Qe8 d8Q Qc6+ Ke7 Ra5 d6 Qf1 d7 Be3 Rg6 Rh6 Qde8 Ba7 d8B Kb3 Bf5 Ra6 Ba5 Nd7 Bbc7 Rh7 b8N Qa8 Bh6 Qd3 Rc1 a1N Bcf4 Qdf3 Qd6 Qd1 Bhg5 Rh5 Nc7 Nb6 Bd7 Bb7 Bc8 Ka3 Bh6 Rb5 Nd7 Kb3 Bg3 Ka3 Bhf4 Kb3 Be1 Nc6+ Kf6 Rb4 Kg7 Nd8 Rg4 Rb5 Bad2 Ra3 Bh7 Ba6 Bg6 Rb4 Bh5 Ka4 Qg8 Rg3 f8N Rh3 Qgf7 Rb1 Ng6 Nb3 Rg1 Be2 Kf8 Ba6 Nf2 h1B Bh2 Be4 Nh1 Beb7 Rg3 Ra1 Rb1 c1B Rb2 Rb1 Rc2 Bb2 Rc6 Ba3
6B1/1bb1qR2/2q1Q1rB/K4qnN/4BRpQ/3R1Q1q/NnQ1rrQB/4k3 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 d5 c4 e5 cxd5 exf4 a4 Nf6 axb5 Ng8 h4 Kd7 e4 Kd6 b4 Ke5 d4+ Kd6 Kd2 f5 Kc3 a5 h6 c5 b6 g5 h7 f3 h5 f2 b7 g4 h6 f4 e5+ Kd7 b5 c4 d6 Ke6 d5+ Kf5 e6 Ke4 d7 a4 d6 a3 Kb4 c3 e7 a2 e8B f3 b6 c2 Bg6+ Ke5 Bc4 f1R Be4 f2 Nc3 Bg7 Nh3 Bf8 Nf4 Qg5 d8R Na6+ Ka5 Bg7 b8B Bb7 Nh5 Qe7 Qf3 Kd4 d7 Nf6 Bh2 Rg8 h8Q Nh7 Rb1 a1Q+ Na2 Be5 Qhf6 Rg7 Bg8 Ng5 h7 Rg6 h8Q Qb2 Bcf4 c1Q Qe6 Qc6 Qh7 Qb3 Rd1+ Qd3 Rf8 Re8 Rf7 Nc5 Qg2 Na4 d8Q+ Qcd6 Qdc8 Nb2 Qc2 Qc6 Bd2 Qh3 Qf3 Re1 Rf1 Re2 Qh8 Rf8 Rf4 Ba6 b7 Rf7 b8Q Bb7 Qa8 Rf8 Rh1 f1Q Qg2 Qf2 Rhf1 Qff3 Rf7 Qff6 Rf4 Qf5 Bc3+ Ke3 Rd5 Rf2 Bd2+ Ke2 Rd3 Re8 Be3+ Ke1 Qhf6 Nf3 Qh4 Ng5 Rf3 Nh7 Bh6 Ng5 Rf4 Rd8 Rb3 Rd2 Rd3 Re2 Qa7 Nf3 Qe3 Ng5 Qef3 Bc7#
1k1bBb1R/4QQnK/3qN1b1/Q6n/1Br1pR2/1nrq2N1/1QRR4/B3Q2n w - - 0 1 illegal: No possible last move, all moves rejected
B2k3B/q2r2Br/1rQQ1R2/nQ5n/KR2NnpR/Q3b1Bp/5q2/2Bb3N w - - 0 1 illegal: No proof kernel
1nBQ2NR/NR1K3N/2R5/N7/1pB2p2/r3nqb1/bNN1r2n/b1kb1BB1 w - - 0 1 legal: proof: f4 a5 g4 d5 c4 h5 cxd5 e5 fxe5 Bd7 gxh5 Bc8 b4 axb4 Kf2 Kd7 Kg3 g5 Kg4 b5 Kf5 c5 h4 b3 e4 g4 a4 g3 d4 g2 h6 b2 e6+ Kd6 h5 f6 e5+ Ke7 h7 b4 h6 c4 a5 c3 d6+ Ke8 d5 c2 a6 Bg7 a7 Qb6 d7+ Ke7 d8N Qb7 d6+ Kf8 d7 Ke7 Ra6 Bf8 Nh3 g1B Rc6 Qb5 Nf4 Qb6 Nb7 Bg7 d8N Bc5 Na5 Qc7 Be3 c1N Nd3 Qd6 Bg1 Nb3 Na3 b1B Nc2 Nd2 Nb2 Na6 Rh3 Bf2 Rhc3 Rb8 a8B Ba2 Bb7 Bg3 Ra3 Bd7 Bc8 Nc4 Rc3 Qc7 Rb6 Qd6 Rb7 Ra8 Qd3 Qd5 Ndc6+ Kf8 Na7 Ba4 e7+ Kf7 Qd1 Qg2 Qd3 Qe2 Qd8 Ne3+ Ke4 Kg6 e8N Kg5 e6 B4b3 e7 Qf3+ Kd4 Kf4 Rc6 f5+ Nf6 Ba4 e8B B4b3 Bf7 Ba4 Na1 Bd1 B7c4 Nb8 Nb5 Na6 Nc2 Ra7 Rf7 Re7 Na7 Re6 Rb7 Re5 Nd7 Nf6 Nf8 Rg8 h8R Nfg4 h7 Nh2 Nd7 Rge8 Nf6 R8e6 Ng8 Rh6 Bf7 Rh3 B7c4 Ng2 Bb3 Re2+ Kc4 Bf6 Kb5 Ne3 Bc4 Ke4 Kb6 f4 Kb5 Nc7+ Kc5 Na6+ Kd6 Bg7 Kd7 Be5 Na3 Kd4 Nc2+ Kc3 Na4+ Kd2 Nb2 Bc3 Ke7+ Kc1 Kd7 Neg4 Na4 Ba1 Nb2 Bf2 Ne7 Rg3 Rf8 Qc3 h8N Rf3 Nf7 Bg3 Rh8 Qe3 Ng8 Qf2 Rf6 Ra3 Ng5 Ne3 Nh7 Qf3 Rc6 Nb8+
1bn2Bn1/2k1rP1b/R2qQB2/7Q/1Q1QQR2/1rbr1N1B/2RbKb2/2q1N3 w - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 b4 Kd7 f4 a5 d4 h5 g4 e5 g5 c5 b6 a4 b7 c4 b5 c3 f6 c2 f5 e4 f7 h3 f6 e3 b6 e2 d6 h2 g6 a3 d5 h4 g7 a2 Ba3 c1B Nd2 h3 Ndf3 Ne7 g8Q Bfh6 f8R Nbc6 b8Q Ra5 b7 Na7 Qa8 Bcf4 b8Q Rh7 Qb4 Rb5 Kf2 e1B+ Ke2 Beg3 Ne1 Bf2 Ngf3 Ba6 Rg1 h1Q Rg2 h2 Qdd4 Qb8 Qg5 Bc8 Qh5 Ng8 Rf7+ Kd8 d7 Kc7 Qe3 Bd6 Qe6 Bd2 Rf8 Re7 Rf7 Be5 d6+ Kb6 d8B+ Qc7 Rd1 a1B Qae4 Bac3 Ra1 Qg1 Ra2 h1R d7+ Bd6 Rc2 Rh3 Rg6 Bb7 Bg2 Nc8 Rh6 Rg3 Bh3 Bd5 Rf8 Kb7 Rf7 Qc6 Rg6 Bb8 Rh6 Qd6 Rg6 Re8 Be7 Bc6 d8Q Bd5 Bf8+ Re7 Bb2 Kc6 Qdd7+ Kb6 Qa7+ Kc6 Qad4 Kc7 Rfg7 Ba2 f7 Bb1 Rg4 Rb7 R7g6 Rb6 Rf4 Qh1 Nd3 Qc1 Nde1 Rb5 Rg5 Rb7 Ra5 Rb6 Ra6 Rb7 Nh2 Rd3 Nhf3 Rb6 Qa4 Rb3 Qab4 Re8 Ba1 Re7 Qde5 Bba7 Rb2 Rd4 Qe3 Bh7 Q5e4 Rd3 Rc2 Bb8 Qec5+ Kd8 Qcd5 Bcd4 Bc3 Kc7 Ba1+ Bc5 Bf6 Bd4 Qde5 B4c3 Q5d5 Bg1 Qdd4 Bf2
b1q5/1BN5/N1rB2Q1/N2r3P/Q1Q2n2/q1nN1bbB/NK2n1pk/nR4R1 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 d5 c4 e5 cxd5 exf4 a4 Nf6 axb5 Ng8 h4 Kd7 e4 Kd6 b4 Ke5 h6 c5 h7 f5 h5 g5 b6 a5 b7 f3 b5 Kf4 d4+ Kg3 Kd2 g4 Kc2 f4 b6 c4 d6 c3 d5 a4 e5 f2 e6 f3 e7 a3 e8B a2 d7 Ba3 d6 Nf6 Bh3 Nc6 b8N f1N b7 f2 Nf3 Ne7 Na6 Ned5 b8Q Ne4 Qc7 Nf4 Ne1 Bb7 Qc4 Rc8 Nd3 Rc6 Rg1+ Kh2 Bf7 g3 Bd5 Qa8 d8N g2 d7 Qc8 Ne6 Ba8 d8N Nfg3 Nec7 f1B Nb7 Nge2 Na5 Rd8 h8Q Bd6 Ba3 Rd7 Kb3 c2 Nc3 c1Q Rb1 a1N+ Ka2 Qe3 Kb2 Qc5 Na2 N4c3 Qh7 Be5 Be4 Rd5 Qdb3 Nd4 Qg8 Be2 Qg6 Bf3 Qba4 Nde2 Bb4 Bd4 Ba3 Bf2 Bb4 Bg3 Ba3 Qf2 Bd6 Qc5 Bef5 Qe8 Bc8 Qd8 Bb7 Qe8 Bg4 Qc8 Bh3 Qa3+
n1q1nR2/N1qq4/NNB5/2K1P3/1qp3RN/QR1N4/2Q1p1Bk/bbB3rr w - - 0 1 illegal: No proof kernel
BQN1Q3/2BN1K2/nB1rn2R/2q3p1/b4r1B/b1RPp2N/3pQ3/rk1r1B2 w - - 0 1 illegal: No proof kernel
bq2q3/qR1Q1n2/NR1Pr2K/5r2/RbRnk2B/1b6/RnN3r1/2RR1B1N w - - 0 1 illegal: No possible last move
2Q1r3/2r4n/Q1RbRrb1/1N2N2k/3qbB1r/K3R2Q/1PB1N1p1/1N3q1B w - - 0 1 illegal: No possible last move, all moves rejected
5n1N/R1NQ2K1/1n1r3R/1N1B1nR1/p1r2Pp1/1Q1nrb2/2N3k1/Q1BB2b1 w - - 0 1 legal: proof: b4 a5 g4 h5 c4 hxg4 a4 f5 e4 d5 exf5 b5 axb5 a4 cxd5 Qd6 Ra3 Qa6 Ra1 Qa5 bxa5 Ra7 Bd3 Ra6 Bf1 Ra8 Ke2 Kd7 Kd3 Kd6 Kd4 g5 f4 c6 h4 e6 f6 g3 b6 g2 h5 Rh6 b7 Rh8 f7 Ra6 h6 Ra7 h7 Ne7 a6 Ng6 Nf3 g1N Be2 Rg8 h8N Nd7 b8Q+ Rc7 a7 Ba6 a8B Nb6 Na3 Bb7 Ne1 c5+ Ke4 c4 d4 e5 Kf5 e4 Kf6 c3 Nec2 e3 Rh6 Nf3 Nb5+ Kd7 d6 Kc6 d7 Kd5 d8Q+ Ke4 d5 g4 d6 Nfh4 d7 Nf5 Rb1 Bc5 f8N Rc8 Ne6 Nf8 Kf7 Rg6 Nec7 Rd6 Qg1 Bd4 Bd1 e2 Qe7+ Kf3 d8R Bc5 Rd7 Bf2 Qe1 Kg2 Qd8 Be4 Bd5 Bf3 Re7 Be3 Qd7 Bg1 Kg8 Re8 Rg7 Re7 Rg5 Re3 Qf1+ Kg3 Rb4 e1N Rc4 Nd3 Rc6 Na8 Ra6 Nb6 Qe1+ Kg2 Ra7 Ng3 Nb4 c2 Kg7 Ree6 Qe5 Re8 Qa1 Re3 Bd2 c1R Nc2 Rb1 Qb7 Rb4 Bc1 Rc4 Nba3 Nc8 Qb3 Nb6 Nab5 Nf5+
1Rb1r3/Nq5K/RB1BBk2/4R1q1/Nr1n1brR/p2Q1n2/PRb2B2/3qB3 w - - 0 1 legal: proof: e4 c5 c4 f5 exf5 g5 b4 d5 cxd5 Nc6 bxc5 Nb8 h4 gxh4 Ke2 Kf7 Ke3 e5 Ke4 a5 d4 b5 g4 h5 f4 b4 c6 b3 d6 b2 d7 a4 f6 h3 Kf5 e4 g5 a3 d5 h2 d6 e3 c7 e2 Qd3 e1R Nc3 b1B Nge2 h4 Nb5 h3 Bd2 Bc2 Nec3 Ra7 Na4 Rh7 Rb1 Bd1 Rb2 Re7 Be1 Ba6 c8R Rh5 Rc5 Re3 Re5 Ra8 Na7 Qa5 d8R Re2 d7 Nc6 Rdb8 Rc2 d8B Bd6 Bb6 Rg2 Be2 Rh7 Bg4 Rh4 Bbf2 Qd2 R8b6 Bb7 Ra6 Bc2 Bb6 Re8 g6+ Kf8 g7+ Kf7 Kg5 Nh6 g8R Bc8 Bef2 Qa5 f5 Nd4 Rh8 Qd5 Rhb1 h1Q Rh7+ Kf8 Kg6 h2 f7 Qd1 Be1 h1Q Bf2 Be6 Rh8+ Ke7 Kh7 Rg1 f8B+ Kf6 Be1 Bb8 Bfc5 Nf3 Bcf2 Bc8 Bh3 Rb4 Bg4 Kg5 f6+ Nf5+ Bh3 Qc5 f7 Rgg4 f8B Kf6 Bd6 Qg2 Qe2 N5d4+ Qd3 Re4 Be6 Rg4 Rg8 Qb5 Rgg5 Qg3 Rh5 Qf4 Rh4 Qg5 Rb3 Qc6 R1b2 Qd5 Rc3 Qb5 Rc7 Qc6 Rb7 Bc7 Rb8 Qb5 Ba5 Qb7 Bb6 Re4 Rb5 Rg4 Bdc5 Qa8 Bf8 Bh2 Bd6 Bf4 Re5 Qb7+
N1Brb1Bk/Q1B1B3/1qrN4/3Bb1P1/2Qrqb2/b2Rp1R1/RK5p/1B6 w - - 0 1 legal: proof: d4 f5 e4 fxe4 f4 a5 b4 c5 bxa5 Nf6 dxc5 Ng4 f5 Nh6 g4 Ng8 h4 Na6 g5 Nf6 Qd3 Nc7 Qd1 Ne6 gxf6 g5 Ne2 g4 Ng1 Ng5 hxg5 Qc7 Nd2 Qb6 Nb1 Qd8 Kd2 Kf7 Kc3 Kg8 a4 e5 a6 h5 a7 b5 c6 d5 c7 e3 a5 b4+ Kb2 b3 c4 g3 c5 e4 f7+ Kh7 a6 g2 f6 d4 c6 h4 Nd2 d3 Nh3 g1B Nf2 h3 Qg4 e2 Ra2 e1B Nc4 d2 Bd3 d1Q Bb1 h2 Nb6 Q1d3 Bf4 e3 Ne4 Qe8 Nd6 Be6 c8B Bc4 c7 Qg6 Be6 Rd8 c8B Bgf2 a8B Bb5 a7 Bg7 f8B Bg3 Rg1 Bb4 Be7 Ba4 Be5 Bf4 f7 Qc6 f8Q Qce4 Qf7 Be8 Bad5 Rg8 a8R Kh8 Rg3 Rf8 Qff5 Rf6 Bg8 Qh6 R8a3 Re6 Ndc4 Rc6 Na8 Qd6 Qe6 Qc7 Qd7 Qb6 Qa7 Bf6 Kc1 Bg7 Bc7 b2+ Kd1 Bd4 Nd6 Bde5 Qe2 Qa5 Qc4 Qb6 Bd3 b1R+ Kc2 Rh1 Rc3 Rg1 Kb2 Rd1 Bb1 Rd4 Rd3 Ba3+
3r3q/qrkbb3/QRn5/2QQp3/Q1QB2Q1/2bN3P/BqB2qKN/R3n3 w - - 0 1 illegal: No possible last move
N3b1rr/Bqr3Q1/RN2rn1b/KQ5P/QB3B2/1B1pQn1k/nQ1R4/4b3 w - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 h6 Kf7 Kd2 Kf6 f4 a5 b4 d5 c4 g5 h4 e5 h5 a4 b6 e4 c5 a3 b7 g4 b5 g3 h7 a2 b6 g2 c6 d3 Kc3 d2 c7 e3 Nf3 g1B Rh2 e2 Ng5 e1R Ne6 Ba3 Bc4 Bac5 Na3 Bce3 Kb4 Nd7 b8B d4 b7 d3 Ba7 Rf1 b8Q Ba6 c8Q Qe7+ Qc5 Ne5 Nc7 Qf7 Qb7 Rb8 Na8 Bb5 Be6 Rd8 Nc4 Re1 Qbf3 Qb7 Ncb6 Bc6 Qb5 Bgf2 Qb3 d1N Qh3 Kg7 f6+ Kh6 f7 Nc3 f5 Kg5 f8B Re2 f6 Be1 f7 Re8 Rb1 a1R Qc2 Ra2 Ra1 Bf4 Qb3 Rac2 Ra6 Na2+ Ka4 Bd7 Bb4 Rc7 f8Q Be3 Qf2 Nf6 Ka5 Reg8 Q3a4 Be8 Bb3 Bf4 Qhf3 Kf5 Qe4+ Kg4 Qed4 Re3 Qdb2 Bh6 Bcd2 Re2 Bf4 Nf3 Qfc5 Re5 Qe3 Re6 Rd2 Kh3 Qd7 Rg2 Qdb5 Rf8 h8Q Rg1 Qh7 Rh8 Qhd7 Rgg8 Qh7 Rc1 Qg7 Rc7
3Q4/R1QbrBkN/2p2p2/2pqrnN1/B1P2nBp/4QrR1/1BB5/1n3KQ1 w - - 0 1 illegal: No possible last move
Rr1n1K2/1P2Q2B/n2Q3B/2bq1RR1/b5Nq/2k2N1r/1N1Rq1Q1/n1b1r1Q1 w - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 Ke2 Kd7 Kd3 Kd6 Kc4 Ke5 Kc5 a5 b4 h5 f4+ Ke4 g4 e5+ d6 c6 d4 a4 d5 h3 g5 h4 g6 h2 b6 h3 b7 a3 f6 a2 f5 Nh6 b5 Qa5 f7 Ng4 g7 Ra7 g8N Be6 f6 Be7 f8R Bf5 f7 Bc8 Na3 Rh5 Nh6 Be6 Nc4 Qd2 b6 Bd7 Nf3 Ra8 Nb2 Qe2 Rg1 h1Q Rd8 h2 f8R Qhg2 Rf5 h1Q Qd2 Rh3 Qe1 Nf6 Ng4 Nh5 Bh6 Ng7 Qf2 Qg3 Qg2 Qh4 Rd1 a1N Rd2 Bf6 Rf8 Be8 d7 Ne6+ Kd6 c5 d8Q c4 Qd7 c3 Qg7 Na6 b8Q c2 b7 c1B Qd8 Bg5 Qde7 Ba4 Rc8 Nd8 Qg6 Ra7 Ra8 Be3 Qgg5 Qd1 Bb5 Bc5+ Kd7 Qe2 Ke8 Qee1 d6 Qe2 Nd3 Kd5 d7 Ke4 Kf8 Kd5 Nfh2+ Kd4 Nb2+ Kc3 Bd3 e4 Nf3 e3 Qg6 Qf1 Qgd6 e2 Qdh2 e1R Bb1 Nc6 d8Q Qe2 Qdd6 Nd8 Rf1 Qg1 Rg5 Qd4 Bh7 Qde5 Qhg1 Qd5 Nfh2 Kb3 Rff5 Kc3 Rc8 Ra8 Nf3 Nb4 Rc6 Rc8 Ra6 Rb8 Ra8 Na6
qQ3Q1r/1p2bNNr/k2q1n1n/2P1NBRR/3B1BBn/1R6/3Nb2b/4K1r1 w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 c5 d4 h5 dxc5 f5 exf5 Kf7 gxh5 Ke8 c4 g5 h4 e5 a4 d5 f4 Kd7 f6 Kc6 h6 g4 f7 b3 f5 d4 f6 d3 h5 g3 a5 g2 a6 b2 h7 e4 a7 e3 h6 e2 Rh5 Bd7 Nf3 g1N Ra3 Be6 Nbd2 b1R Bh3 Qc8 Bg4 Rb2 Ne5+ Kc7 c6 Kb6 c5+ Kb5 c7 Rb1 Rb3+ Ka6 Qc2 Qd8 c8B Be7 f8Q Bc4 Bcf5 Nd7 f7 Ndf6 Qb2 Qd6 Qd4 Rd8 Qf4 Rd7 Rg5 Qb8 a8R+ Qa7 Rd8 Qa8 Rh5 Rc7 Rd5 Bb5 Qb8 Ra1 f8N Nf3+ Kf2 Rb1 Ne6 Nh4 Ng7 e1B+ Kf1 Bg3 Qf3 Bh2 Ke1 Ne8 Rg5 Ngf6 Qf2 Nd6 Qf1 Nf7 Rh5 Rd8 h8N Rcd7 h7 Nh6 Nhf7 Ra1 Nb1 Rh8 Bf4 d2+ Kf2 d1Q Nd2 Re8 h8B Be2 Rg5 Rc1 Rh5 Rc3 Rg5 Rg3 Rh5 Rg1 Rg5 Qc2 Ke1 Qd3 Bg6 Qh3 Nf5 Rg8 N7d6 Rdd8 Nc6 Ne8 Rh5 Nf6 Bg5 Nh7 Bhf6 Qg2 Bd4 Rde8 Ng7 Ref8 Bge3 Re8 Rdg5 Qd5 Ne5 Qe6 Ndf7 Qd6 Nd8 Nf6 Bb1 Nd7 Bc2 Rh8 Be4 Rh7 Bb1 Rg3 Qf4 Reh8 Qf8 Qb6 Ndf7 Nf6 Bbf5 Qd6 Bf4 Rg1+
RB1bn2N/R2Kb1k1/1NB2r2/1P1r1R1Q/N1qBr3/8/1B1p1nb1/1r1N1q1Q w - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 Kd2 Kf7 Kd3 a5 Kc4 g5 Kc5 d5 f4 d3 c4 d4 b4 g4 h4 g3 h6 d2 h7 d3 h5 a4 h6 a3 f6 a2 b6 g2 b7 Bd7 b5 Bc6 f5 Ra5 Nc3 Ra6 Na4 Qc8 Bb2 Ra8 Nh3 g1B+ Nf2 Bh2 Bg2 Bc7 Rh5 Bd8 Qh1 Ra6 Nd1 Qe6 Bf3 Be4 Bg2 Nc6 b8B Ne5 Bd4 Bb7 Bc6 Ng4 Bb2 Qc8 Kd5 e5 c5 e4 Bd4 Ne7+ Kd6 e3 Bb2 Rg8 h8B e2 h7 Rg5 Bg7 e1R h8N+ Kg8 Rh7 Re4 Rh5 Nh6 f7+ Kh7 f6 Nf5+ Kd5 Bd6 f8Q B6e7 f7 Nd6+ Bge5 Qc7 Ke6 Ne8 Bd4 Rg1 Rf5 Rg5 Bb2 Rh5 Bd4 Ng4 Qg8+ Kh6 f8R Nf2 Qg4 Kh7 Qgf3 Rb6 R8f7+ Kg8 Qfh3 Rg5 Qh5 Ra6 Rb1 a1R Rb2 Rb1 Ra2 Qa5 Ra3 Qb4 Kd7 Qc4 Bb2 Ba8 Bed4 Rb6 Bb7 Rbe6 c6 Rf6 Rf8+ Kg7 c7 Qc1 c8N Qc4 Bc6 Bb7 Ndc3 d1Q Ncb6 Qf1 Nd1 d2 Nac3 Re5 Ra7 Re4 Nca4 Ba8 Rf3 Rc5 Rf5 Rd5+ Kc8 Ree5 Ne3 Nd6+ Kd7 Rc5 Bd5 Bc7 Nd1 Re2 Rc8 Bcd8 Bc7 Ne8 Bf4 Bb7 Rca8 Re6 Bb8 Re3 Bf7 Bg2 Bd5 Re4 Bc6 Rd5+
1q3K2/2Q1Q2p/3Npb1p/2r1NBn1/1rR3Pk/5RN1/Qp2n1r1/1NBbB1Q1 w - - 0 1 legal: proof: e4 d5 h4 a5 c4 f5 cxd5 a4 exf5 a3 h5 Ra4 h6 gxh6 bxa3 Ra5 a4 Ra6 a5 Ra8 Ke2 Kf7 Kf3 Kf6 Ke4 Kg5 Ke5 c5 g4 b5 a4 e6 a6 b4 f6 c4 f4+ Kg6 d4 c3 f7 b3 a7 b2 f5+ Kg7 a5 c2 a6 Qh4 d6 Ne7 d7 Qh3 Kd6 Kf6 d8N Qc3 d5 Qc4 Ne2 Qb3 Nb7 Nd7 Ra3 Qb5 Rf3 Nb8 Ng3 Qb3 Bd3 Qa2 Qg1 Bg7 f8B Kf7 f6 Ng8 Bf5 Nc6 Rh3 Rb8 a8N Qa4 a7 Bd7 Nb6 Qb3 a8Q Nd4 Nc4 Ne2 Qa2 Ba4 Rh1 Rc8 Be7 Rc5 Ne5+ Ke8 Bd8 Kf8 f7 Bf6 Rh5 Kg7 Ba5 Qb5 Be1 Qb4 Bcd2 c1R Be3 R1c4 Bc1 Bd1 Kd7 Qb6 Ke8 Rb4 d6 Qc7 d7 Qb8+ d8Q Rc2 Be4 Rd2 Nd6 Rc2 Nc6 Rd2 Rhf5 Kg6 R5f4+ Kg5 f8Q Kh4 Qe7 Nd4 Qf2 Bg5 Bd3 Nf6+ Kf7 Ne4 Ne5 Bf6 Qg1 Rg2 Qdd7 Ne2 Qc8 Nf2 Rc4 Nh3 Bf5 Re8 Qcb7 Rc8 Qba7 Rc5 Qac7 Qb7 Kg8 Ng5 Kf8 Qb8+
R5Nr/n2K2R1/b2B2R1/B5B1/B1b2pP1/1n1p1R1p/R2n1RQ1/bNqk1r2 w - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 c5 d4 cxd4 a4 e5 fxe5 Na6 axb5 Nb8 Kf2 Ke7 Kg3 Ke6 Kg4 Kd5 Kf5 Kc4 g4 a5 b4 h5 e4+ d3 e6 d5 e5 f6 b6 d4 b5 h4 b7 a4 b6 h3 g6 a3 g7 a2 Qf3 Be7 Qg2 Ra3 Rh2 Ra7 Nf3 Rh5+ Ng5 Rh8 Ne4 Kb4 c4 Kb3 c5 d2 c6 Kc2 c7 Na6 b8B Nc5 b7 Ra3 Bb5 d3 Ba4+ Rb3 Ba7 Qd6 b8B Ba6 c8R Rh7 Rf8 Qd7 Bb6 Qb5 Ba5 Qc4 Bd6 Rh8 Ra8 Bd8 e7 Kd1 e8R Bc7 e6 Ne7+ Kf4 f5 Ke5 Qc2 g8R Nc8 e7 Na7 Nf6 Ne4 Ke6 Bb6 Ref8 Bd4 e8R Bc3 Bca3 Qc1 Rg6 f4 Ng8 Bb2 Kd7 Qc5 Be7 Be5 Qf3+ Ke1 Nc3+ d1B Bg5 Rb1 Rf7 Nd2 Rfg7 Bb3 Rf2 Rd1 Nb1 Qc2 Nc3 Bbc4 Bd6 Rb1 Qg2 Rd1 Rb1 a1N Rb2 Nab3 Nb1 Qc1 Rf3 Qc2 Ra2 Qc1 Qg1+ Ke2 Ree6 Re1 Qg2+ Kd1 Rf2 Bd4 Re3 Ba1 Ref3 Rf1
1n1b2bR/5R1r/KBp3N1/2BRN1Q1/4kpbp/B1r1qR2/1R2R1pP/3n3B w - - 0 1 legal: proof: f4 b5 g4 f5 a4 e5 axb5 d5 c4 Qf6 cxd5 exf4 Qb3 f3 Qc2 f4 Qd1 Qf5 gxf5 Bd6 Ra6 Be7 Ra1 Bf8 b4 Ke7 d4 Kd6 Kd2 a5 Kc3 h5 Kc4 g5 e4 a4 b6 f2 Kb5 a3 b7 h4 e5+ Kd7 e6+ Kd6 f6 g4 f7 a2 e7 g3 e8R Ra3 Bg2 f1B+ Re2 Nd7 b8R Nc5 Nf3 Ra4 Nbd2 Ne4 Ne5 Ra6 Ba3 Ng5 Ndc4+ Ke7 d6+ Ke6 d7 Kf5 d8B Be7 f8B Nf7 d5 Rh5 d6 Nh8 d7 Nf7 Ng6 Nf6 Nce5 Rc6 Qd5 Ng4 Rc1 Bf6 Bc5 a1Q Rd1 Qc3 Rb7 Qf3 Rg1 Rh8 Bh1 g2 Rd3 Qf2 Rf3 Ne3 Ka5 Rh7 b5 Qg3 b6 Nd1 Ra7 Qf2 b7 Qe3 b8R Bg5 Reb2 Bc4 Re1 Be7 Ree2 Bb3 Bd6 Rc3 Bdc5 c6 Bdb6 Bd8 Rab7 Ba2 Ka6 Bb3 Qd6 Ke4 Qf6 Be6 Qg5 Bg4 Nc4 Ne5 Ra8 Bf6 d8R Bce6 Rd5 Nd7 Rh8 Bg8 Nce5 Bd8 Ra7 Nf6 Re7 Nd7 Rf7 Nb8+
3N1RR1/1R2n3/B2r1q1R/2rPqk2/rRRK4/1NN1n1Q1/1Rr1r2b/2q4Q w - - 0 1 illegal: No possible last move, all moves rejected
4QN1n/bP1QP1K1/R3r3/B2nN3/1N2brB1/pR6/qn1krq1B/3bR2Q w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 d5 c4 e5 cxd5 exf4 a4 Nf6 axb5 Ng8 Kf2 Ke7 Kf3 Kf6 Ke4 Kg5 Ke5 c5 d4 a5 b4 f5 h4+ Kg4 e4+ f3 b6 g5 h6 c4 b5 f4 d6 a4 d5 c3 d7 c2 h5 Ra6 b7 Kg3 b6 Kf2 h7 g4 h6 g3 d6 g2 Nc3 Nf6 Na2 Nd5 Nb4 Nc6+ Ke6 Qh4 Kf7 Qh2 d8B Bf5 b8R Nce7 d7 Ng6 e5 Be4 e6 Bc5 Be2 Re8 Kg7 Nh8 Bb2 Ke3 Be5 f2 Nf3 c1N Re1 f1Q e7 Rf8 Bd6 Qf2 Ne5 f3 B8c7 Rf5 d8Q Nd3 Qe8 Rf4 Ra3 Bd4 b7 Ba7 Rb3 a3 Ba5 Rc6 Ra8 Rc2 Qd7 Ra2 Qb1 Kd2 Bd1 Nb2 Qa1 Ng6 h8Q g1R h7 Rg3 Qhe8 Nh8+ Ng4 Rh3 Ne5 Rh6 Be2 Re6 Bd1 Bb8 Ra6 Ba7 Qb1 Qb6 Be2 f2 Bg4 f1B Qa1 Qbf2 Bb8 Nf7 h8N Be2 Nhg6 Nh8 Nf8 Bd1 Qb1 Bh1 Qh7 Be4 Bbc7 Qhg2 Qh1 Na4 Qf1 Kc1 Qa8 Rf3 Qd6 Qc5 Bcb6 Rf4 Qh1 Qcc2 Bg1 Qgf2 Qe8 Qc4 Rg3 Re2 Qdd7 Nb2 Bh2 Qa2 Rb3 Kd2
1B4R1/1b3Qn1/1Qr2R1N/1p3B2/1q2n1rQ/1PbnK1PR/N2N2kB/3nn1q1 w - - 0 1 legal: proof: e4 b5 h4 d5 a4 g5 c4 gxh4 cxd5 f5 exf5 Qd6 a5 Qb6 axb6 Ba6 Nc3 Bb7 Nb1 Bc8 Ke2 Kf7 d4 Kf6 f4 c5 d6 a5 b3 h5 b7 e5 d7 h3 d8B+ Ne7 g3 a4 d5 h4 d6 h2 d7 h3 Qd3 c4 Qc2 e4 Qd1 a3 Qd5 c3 Ba5 c2 d8N a2 Qc4 e3 Nf7 Bg7 Bb6 Rg8 Nh6 Nd7 b8Q Bb7 Nc3 Nc5 Nf3 Ne4 Nd2 Ra6 Kd3 e2 Ke3 e1N Bd3 Bh8 Ba3 c1N Bd6 Rg5 Qd8 Rg8 Bb8 Rg4 Bc5 Rc6 Qb6 Bg7 Rb1 a1Q Na2 Bh8 Rf1 h1Q Qa4 Kg7 f6+ Kg6 f5+ Kh5 f7 h2 f8R Qc3 f6 Qb4 f7 Bc3 Rg8 Qg1+ Rf2 h1N f8Q Rcg6 Bc2 Ncd3 Bd4 Rc6 Rd1 Qf1 Rf6 Nhf2 Rc1 Qg1 Qf7+ Rg6 Nf5 Kg4 Nh6+ Kh3 Bb1 Ba1 Rc5 Rg7 Rh5+ Kg2 Rh3 Rg4 Bc5 Ng6 Bd4 Nf8 Bc2 Ne6 Bb1 Ndc5 Bc2 Ng7 Bb1 Nd6 Bf5 Ncd3 Bc5 Bc3 Bd4 Qa5 Qac4 Qb4 Bc5 Rg5 Qh4 Nde4 Be5 Nd1+ Ke2 Qh1 Bb8 Rg4 Bg1 N1f2 Bh2 Qg1 Ke3 Nd1+
7Q/pB1R4/1r3pn1/PP2pN1R/3brN1N/p1Q2QbR/k2q1B2/B2q2Kb w - - 0 1 illegal: No proof kernel
1NQ5/B2nq1Bp/1P1b3N/q1R1RB2/br1q2r1/3R1bqk/NKbRR2P/8 w - - 0 1 illegal: No possible last move
N3k3/p1b1N2p/R1N2K1R/B2b3q/3BBrR1/Q2nP3/P1pBpn1n/1B1r4 w - - 0 1 illegal: No possible last move, all moves rejected
1NB1k2r/4N3/1N1n4/q1Q2Q2/rQ1PR2q/1RN1KPq1/1p1r1r1p/2N2B2 w - - 0 1 legal: proof: e4 d5 exd5 a5 h4 g5 c4 g4 b4 f6 bxa5 Na6 d4 Bf5 d6 Bd3 Bf4 Bf5 Be5 Bh6 f3 Bg5 hxg5 Be4 f4 Bf3 gxf3 fxe5 Rh5 Nb4 Rh1 Nd5 cxd5 Kf7 Na3 Kf8 Nb1 Ke8 Rh4 h5 Ke2 c5 a4 b5 g6 g3 d7+ Kf8 a6 g2 f5 e4 f6 e5 a7 b4 a5 e3 g7+ Kf7 a6 b3 d6 e4 Qc2 c4 Ra3 b2 Rb3 Ne7 g8N Qc7 d8Q c3 d7 Nf5 Qc8 Qc5 d8Q Nd6 Ne7 Qa3 Rg4 h4 Qf5 h3 Qb8 h2 Qb4 Ke8 Qc1 c2 f7+ Kd8 f8N Ke8 Nd7 Qa2 Qcd2 c1R Qc2 Rd1 Nb8 Qa1 Qcc5 Rd2+ Ke1 e2 Kf2 e1R+ Ne2 Qa2 Nc3 Qa4 Ke3 g1Q+ Kf4 e3 Nc1 e2 Rh4 Qg4+ Ke3 Qh3 Re4 Qh4 Nbc6 Rb8 a8N Rb7 Nb6 Ra7 Nb8 Ra8 Bh3 Rf1 a7 e1Q+ N1e2 Rg1 Bf1 Qeg3 Nc1 Rgg2 Nbc6 Rb8 a8B Rgf2 Bb7 Ra8 Nb8 Qb5 Bc8 Ra4 Qa5 Qa6 Qab4 Qa5
4nb1Q/NB5R/1PBqnrkB/q7/n2Bp3/P3Q2r/NB3R2/1R1K1qb1 w - - 0 1 legal: proof: e4 a5 h4 g5 c4 d5 cxd5 f5 exf5 gxh4 Ke2 b5 Ke1 a4 Na3 b4 Nb1 a3 bxa3 Qd7 Qc2 Qd6 Qd1 Qd8 Ba6 b3 Bb2 Bd7 Bc1 b2 Bc4 Ba4 Bf1 Bb3 axb3 Qc8 Ba6 Qd7 Bf1 Qd8 f4 Kf7 d4 e5 g4 h5 f6 c5 d6 h3 d7 c4 d5 c3 f5 e4 b4 h4 d6 c2 b5 h2 g5 h3 b6 Qe8 d8B Na6 d7 Bh6 g6+ Kf8 g7+ Kf7 Nc3 b1N Bb5 Ne7 g8B+ Kf8 f7 Kg7 f8B+ Kf6 Na2 Nc3 Qd2 Na4 Qe3 Qg6 Rb1 Nc7 Ne2 Ne8 Nec3 Rh7 Bb2 c1B Bc7 Nc6 Kd1 Nd8 Bd5 Ne6 d8Q+ Kf7 Bc5 Bf8 f6 Qg3 B7d6 Kg6 f7 Ra5 Bc7 Qd6 Bd4 Rh8 Bbc6 Rc5 Qe2 Be3 Nb5 Bg1 Na7 Rh4 Bb7 Rc6 Qe3 Rh6 Qb8 Rc3 Bdc6 Rb3 Qc1 Rf3 Qa8 Rf6 Qe3 Bg7 f8R Rf7 Bd8 N8c7 Bh4 Rf4 Rh8 Rf6 Qg8 Ne8 Qc3 Bf2 Re1 h1Q Bg3 h2 Rf1 Rh3 Bf4 Qg1 Qd2 h1Q Bh6 Qg5 Rh7 Qa5 Qh8 Bf8 Qc1 Qg2 Qe3 Bg1 Rf2 Qf1+
N1BBN3/1b2RQ2/1K2nrq1/R2BQ1N1/nNp4P/Pbq3q1/1n1k3n/2N5 w - - 0 1 legal: proof: c4 b5 b4 h5 e4 g5 g3 a5 Bd3 axb4 Na3 d5 cxd5 f5 exf5 h4 Nb1 g4 Bf1 Bh6 Qf3 Bg5 Qe2 h3 Qd1 Bh4 gxh4 g3 Qg4 g2 Qe2 Ra3 Qd1 Rg3 hxg3 Rh5 Na3 Rh6 Nb1 Rh8 Ke2 Kf7 Kd3 Kf6 Kd4 e5+ Kc5 h2 d4 b3 f4 c6 g4 e4 d6 b4 g5+ Kg7 g6 Kf6 d7 e3 d5 e2 g7 e1N d6 b2 Nh3 g1N Ba6 b3 Qe2 Qe7 d8N Qb7 d7 Qc7 Nc3 b1Q Nf7 b2 d8N Qb7 Nd6 Ne7 g8B Ngf3 Bd5 Re8 Rg1 h1Q Rg7 Qb3 Qe4 Qg2 Ne2 Qg5 Be3 Qg2 Ng5 Ng6 Nc1 Re6 Re7 Nh2 Bd2 Qg4 Ba5 Nf8 Bc7 Qgg3 Bb6 Bd7 Bc8 Qbf3 Bc7 Nd3+ Kb6 c5 a3 Qh3 Nc6 c4 Bd8 Re5 Bg8 Re6 Bf7 Qc2 Rb1 Na6 Qe3 Nac5 Qe2 Kg7 f6+ Kh6 f5 Qhg3 Bg8 Kh5 Ne8 Kg4 Qe5 Qe4 f7 Qc3 f6 Qg6 Ra1 b1B Ra2 Qg1 Rb2 Bc2 Rb5 Qg3 Ra5 Rd6 Ba6 Nb2 Bc8 Nh7 f8N Bb3 f7 Rf6 Nfe6 Nf8 Nb4 Bc6 Ne4 Kf3 N6c7 Ke3 Ng5+ Kd2 Na8 Nfe6 f8Q Ng7 Bd5 Nge6 Qg7 Bb7 Qf7 Nca4+
nN1Q1QR1/1q1rN3/1B1nB2N/2bR1n2/n1Bn4/2P4N/P5rr/1bK1Nn1k w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 c5 d4 h5 dxc5 f5 exf5 Kf7 gxh5 Ke8 Kd2 Kf7 f4 Kf6 h4 d5 c6 b5 h6 e5 h7 g5 c3 g4 c7 e4 h5 b3 h6 b2 Be2 g3 Na3 b1N+ Kc2 g2 Qf1 b4 Bc4 b3+ Kb2 d4 Be2 d3 Nf3 g1R Rh4 d2 Rg4 e3 Qe1 Ra7 Rg5 Ne7 Qh4 Qd7 Nc2 Na3 Nce1 Rg2 Bc4 e2 Ng1 Na6 Nh3 Nb5 Rb1 Bb7 c8B Be4 Ra1 Qc6 B8e6 Nac7 Rb1 Nd6 Rg8+ Rg5 Ra1 Na8 Rb1 Qb7 Ra1 Bf3 Kb1 d1N Be3 b2 Bb6 Bc6 Kc2 b1N Kc1 Nd2 Rb1 Qd7 Rb5 Nf1 Rd5 Bb7 Qg3 Nb2 Qd3 Rg2 Qd1 Nc6 Qd3 Na4 Qd2 Nd4 Qd1 Ke7 f6+ Ke8 f7+ Ke7 f5 Kf6 Qd3 Bc8 Qd2 Qb7 Qd1 Be7 f8N Bd7 Ng6 Be8 Ne5 Bg6 Nc6 Bf8 Nb8 Be7 Ng1 Kg5 f6+ Kf4 f7 Kg3 f8Q Kh2 Nh3 N4f5 Qd4 Kh1 Qdf6 N5g3 Qd8 Bd3 Qff8 Ngf5 Rg4 Nh4 Nf4 Qa6 Nf3 e1N Rgg5 Nc2 Ne1 Ne4 Rg7 Rg8 h8N Rh2 h7 Bc5 Nf7 Nd4 h8N Nhf5 Nh6 Bb1 Nhg6 Rd7 Nh3 Qb7 Ne7 Ned6 Rg6 Rg7 Rg5 Rh7 Rg8 Rg7 Qde8 Rg1 Qd8 Rgg2
Qq2rBk1/R2B3p/2rQn1N1/RP1bb3/3B1n1b/3BN2P/5B1b/1QK2n1r w - - 0 1 legal: proof: e4 b5 b4 c5 bxc5 f5 a4 d5 axb5 dxe4 g4 Nc6 gxf5 Nb8 c4 Kf7 d4 e5 Kd2 a5 f4 g5 h3 g4 d5 a4 c6 g3 d6 a3 c7 g2 f6 a2 d7 Ra3 c5 Ne7 f5 Qe8 d8Q Bb7 c8Q Bg7 c6 Rc3 c7 Nbc6 Qa8 Kg8 c8B Nd4 Qd6 Ne6 Na3 Rc6 Ne2 g1B Nf4 Bh2 Nc2 Nd5 Bd7 Ne3 Bb2 Qb8 Bd3 Nf1+ Kc1 e3 Bd4 e4 Ng6 e2 Rg1 e1B Rg5 Nc5 Ne3 Bh4 Qc2 Ne6 Rg4 Ra6 Qb1 Bd5 Rg2 Rc6+ Rc2 Rb6 Rc7 Ra6 Ra7 Rc6+ Nc4 e3 Ra5 e2 Ra7 Nc5 Ne3 e1N Ra5 Bf8 Ra7 Be5 Ra5 Ng2 f7+ Kg7 Ra7 Nf4 Ra5 Bfe7 f8B+ Kg8 f6 Bg3 Bh6 Bh2 Bg5 Bd8 Bh4 Be7 Bf2 Nce6+ Qc2 Kf7 Ra7 Re8 Ra5 Kg8 f7+ Kg7 f8B+ Kg8 Rb1 a1R Ra7 Ra4 Ra1 Bh4 Ra3 Rac4 R3a6 Ra4 Ra5 Ra1+ Kb2 Ng3 Qb3 Re1 Qa2 Rh1 Qb1 Nc5 Kc2 Nf1 Kc1 Nce6+
rB1B3q/4R1pk/1R3r1n/N1NQ2R1/Q2r2PB/R2n4/3bq1PR/1K1b2rq w - - 0 1 illegal: No proof kernel
1K4nB/R1R4p/b3B1k1/1Prb3N/2pp1q1P/2QqQQN1/2QQn2R/4n1r1 w - - 0 1 legal: proof: b4 g5 d4 e5 dxe5 b5 a4 Bb7 axb5 Ba6 f4 gxf4 b6 Qc8 c3 Qd8 b5 Bb4 cxb4 Bc8 Kd2 a5 Kd3 d5 Kd4 f5 Kc5 Kf7 g4 f3 e4 a4 h4 f4 b7 c6 e6+ Kg6 e7 f2 e8R f3 b6 a3 e5 a2 e6 Kf6 e7 Ra6 b5 Ra8 g5+ Kg7 g6 Qc7 Qd2 Ra3 Bb2+ Nf6 Ne2 Rg8 Bh3 f1N Rh2 f2 Ng3 Ra4 Nh5+ Kh8 Nc3 Ra3 Ne4 Ng3 Be6 Ne2 Neg3 f1B Rf8 Ra6 e8Q Bg2 Rf7 Qf4 Rc7 Ra7 Be5 d4 Kd6 Na6 b8Q c5 b7 c4 Qa8 Nc5 b8Q Nd3 Qf3 Ne1 Qbb7 Bh1 Qbe4 Ba6 Qec2 Ra8 Qfc3 Rc8 Qc6 Rg7 Q6f3 Ng8 Kc6 Bg2 Kb6 Bh1 Qfe3 Bd5 Ka7 Rf8 Qf3 Rf5 Kb8 Rg5 Rc1 a1Q Qde3 Qa3 Ra1 Bab7 Qc3d2 Qd3 Ra7 Ba6 Bf6 Be4 Qdc3 Rc5 Be5 Nf6 Qed2 Bd5 Qfe3 Rf7 g7+ Kg8 Ne4 Qg5 Bg4 Rd7 Qf3 Kf7 g8Q+ Ke7 Be6 Qf4 Qg6 Ng8 Qg1 Kf8 Qge3 Rg7 Bf6 Rg1 Bh8 Ke8 Neg3 Kf8 Bd7 Kf7 Be6+ Kg6
2q1QnN1/7Q/q3B3/2RKp1QQ/3pr1RN/k1P2Rbn/7P/3NB2r w - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 f4 g5 fxg5 a5 b4 Nh6 bxa5 Ng8 a6 Qc7 b6 Qd8 b7 Bg7 Ra2 Bh6 Ra1 Bf8 Bf4 Nc6 b8N Bb7 axb7 Ra6 Bc1 Ra8 Kf2 d5 Kf3 e5 g6 Ke7 h6 Kd6 h7 Kc5 f6 Kb4 g7 d3 f7 d4 Ke4 d2 Nc3 Ra2 Bc4 Nce7 Qh5 d1Q Nc6+ Kc5 b8Q Qd6 Bd2 Qf6 Rc1 Ra8 Be1 Qh6 Nf3 Ra1 Rg1 Ng6 Qe8 Be7 f8R Bh4 Rg4 N8e7 g8Q Nd5 Ne7 Ndf4 Be6 Bg3 Nh4 Nh3 Rf3 Kb4 Kd5 Nf8 Qgg5 Ka3 Ng8 Qd2 Nd1+ Qc3 Nf6 Rg8 h8Q Qg6 Q8h6 Qgd3 Qh8 Qc8 Q8h7 Rg7 Ng8 Rg6 c3 Qda6 Rb1 Rf6 Rb5 Rf4 Rc5 Re4 Qc6 Ra2 Qa8 Rg2 Qc6 Rg1 Qce8 Rh1
2Qbkq2/r1R3rR/1KN1r1n1/1B2Bq2/B6P/N1qb1b2/n1Q1p1P1/Q2Q1N2 w - - 0 1 illegal: No proof kernel
q2b2R1/k2r1Bpr/NRKN2Pn/3R3b/1pPb2BN/3Qq1R1/8/B1nr1Q2 w - - 0 1 legal: proof: d4 a5 e4 h5 Qxh5 c5 dxc5 Nc6 b4 axb4 Qh7 f5 exf5 Nb8 Ke2 b5 Kd3 d5 Kd4 Kd7 h4 Kc6 a4 Kb7 f4 b3 g4 e6 a5 b2 f6 b4 c6+ Ka7 c7 Nh6 h5 Kb7 f7 Qe8 a6+ Kb6 a7 Nd7 f5 Rg8 g5 Rh8 f6 Ne5 Bc4 Ba6 c8B Be7 f8Q Bd6 f7 Neg4 Qd3 Be7 g6 Nh2 Na3 b1Q Nf3 Qc6 Nb5 Nf1 Ra3 Qb3 Nh4 Bd8 Bb2 Ng3 Nd6 Rh7 Ba1 Ne2+ Ke5 d4 Rd1 Rb8 a8N+ Ka7 Nc7 Rb7 Bd5 Nc1 c4 Qe8 Ke4 e5 Bg4 Qa2 Bde6 Qe7 Kd5 e4 Kc6 e3 Rb3 e2 Rc3 e1B Rd2 Ng8 h6 Bf2 Bd5 Qe3 Ra3 Rh8 h7 Nh6 Rb3 Rb5 Bde6 Bc8 Na6 Rb7 Bd5 Bf5 Ra3 Rd7 Rc3 Rg8 h8R Be4 Rd1 Bf3 Rd2 Nf5 Rh5 Nh6 Re5 Bg1 Re6 Rh8 Qe2 d3 Re5 Ba5 Nc7 Qf4 Be6 Bh5 Bg4 Qa3 Ra2 d2 Rg3 d1R Qd3 Bf2 Bde6 Bab6 Rd5 Qa6 Raa5 Bfe3 Rab5 Bbd4+ Rb6 Qc8 Nf3 Qb8 Nh4 Rh7 Na6 Qf6 Qd8 Qe7 f8R Bf4 Bf7 Bg5 Rg8 Qe3 Qf6 Qf8 Qf4 Qb8 Qf3 Bd8 Qff1 Qa8+
3RQn2/1k1brp2/2q1QNn1/6Bb/b1B5/N2Q1bP1/RP1Q3p/b1r2BKN w - - 0 1 illegal: No possible last move, all moves rejected
1Rr1b3/NN1R1B2/r1rp1KQq/1PQnB1n1/2r1RP2/3pN3/n7/N1b1kB2 w - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 Kd2 Kf7 Kd3 Kf6 Ke4 a5 b4 g5 h4 e5 c4 d3 f4 a4 c5 g4 h6 a3 b6 a2 b5 g3 c6 g2 h7 Ba3 h5 Qc7 h6 Be7 b7 Bb4 Nc3 Ba5 Bb2 Qd8 c7 Bb6 Nf3 g1N Qc2 Bc5 Nd4 Ra4 Re1 a1R Nd1 Qf8 Ne3 Nc6 b8N Nb4 Nbc6 Na2 Na7 Ne7 Rd1 Rg8 h8N Nh3 h7 Qh6 Nf7 Nd5 h8R Ba3 Nd6 Rc4 Nb7 Rf8 Bc3 Bc1 Bb2 Rc6 Nb3 Rg8 Re1 d6 Qc5 Bd7 c8B Be8 Be6 Rf8 Bf7 Rg8 Rg1 Rf8 Rg7 Rg8 Kf3 Ng5+ Kg4 Rf8 Nd4 e4 Nb3+ Nac3 Re2 Raa6 Na1 Rg8 Bh5 Rf8 Rd7 Rg8 Bf7 Rf8 Ng2 e3 Re1 e2 Ne3 Kg7 Rg8+ Kh7 f6 Na2 Qb6 Rc4 Kf5 Rc6 Be5 Rc4 Rd1 e1R Qc5 Re2 Re1 Rec2 Ng2 R2c3 Re4 Rc2 Qc7 Rcc6 Ne3 R2c4 Qb6 Qh2 Qc5 Kh6 Be6 Kh5 f7 Kh4 Kg6 Ne7+ Kf6 Kg3 Rh8 Rg8 f8Q Kf2 Qh6 Ke1 Qg6 Qh6 Bd5 Bf7 Be6 Rgc8 Rhd8 Be8 Bf7 R8c7 Ra8 Rc8 Rb8 Nd5+
QnN3B1/Q2r1P2/n3Qrq1/2p5/k1Pn1B1K/1r1n1R1b/p3RR2/1BnN1B2 w - - 0 1 legal: proof: g4 b5 d4 g5 a4 f5 axb5 e5 dxe5 Be7 h4 fxg4 Ra6 g3 Ra5 g4 Ra1 Bg5 hxg5 Ba6 Bh3 Bb7 Bf1 Bc8 c4 d5 e4 Kd7 b4 h5 f4 c5 g6 a5 e6+ Kd6 e7 a4 e8B h4 g7 h3 b6 h2 f5 g2 Kf2 a3 Kg3 d4 b7 a2 e5+ Kc7 b5 Kb6 e6 Ka5 f6 d3 b6 d2 e7 Bf5 Nc3 Na6 b8Q Qd7 b7 Qc6 Nf3 g1N Qe1 d1R Nd2 Rh6 Qa7 Nf3 b8Q Nd4 Bg6 Bd7 e8R Ne7 Qbb7 Rb8 Qba8 Rb3 g8B Qb6 f7 Nec6 Re6 Nb8 Bb1 Rf6 Kh4 g3 Nde4 g2 Bf4 g1N Nd6 Nge2 Nc8 Nc1 Re2 Bh3 Rf2 Rd3 Nd1+ Ka4 Qe6 Qd6 Rg1 h1N Rg3 Rd2 Re2 Nf2 Rf3 Nfd3 Bc2 Qd7 Rb1 Qd6 Rb2 Qc6 Bb1 Qe4 Ref2 Qg6 Rc2 Re2 Rb2 Re5 Rbd2 Rd5 Rde2 Rd7
1B3NnB/p7/Qr1q1Qp1/P4N2/1R1bPp1Q/n2qp3/bR2K1B1/k1bRB3 w - - 0 1 legal: proof: g4 c5 e4 d5 b4 dxe4 bxc5 h5 gxh5 e3 f3 Qd6 Nc3 Qd7 Nb1 Qd8 Nh3 e5 Bb2 b5 Bc1 e4 Ng1 e2 Kf2 e3+ Kg2 Na6 Nc3 Rb8 Nb1 Rb7 Nh3 Re7 Ng1 Re4 fxe4 Qd6 Qe1 Qe7 Qd1 Qd8 Kf3 Kd7 d4 Kc6 c4 e1B h4 f5 a4 g6 a5 b4 h6 b3 h5 f4 h7 b2 h6 Bb4 d5+ Kc7 d6+ Kc6 d7 Qh4 d8Q Bh3 Nd2 b1Q Qe1 Qa2 Qf6+ Be6 Ke2 Qc2 Nh3 Ne7 Ra2 Bc3 Bg2 Bd4 Rb2 Ng8 Ng5 Qa4 Ndf3 Qb4 Bd2 Qh5 Qh4 Bc3 Be1 Kb7 c6+ Kc7 c5 Ba2 Ne6+ Kc8 c7 Kd7 c8R Nc7 c6+ Kd6 Rb8 Nb5 c7 Na3 c8Q Qhb5+ Qc4 Bd4 Rf1 Qd5 Qa6+ Qb6 Rb4 Bg7 Nf8+ Kc5 Rh1 Qbd6 Rg1 Bb2 Nd4 Bc1 Nf5 Qd4 Rb2 Q4d5 R8b4 Qb3 Qe7 Bd4 Qef6 Qd3+ Kf3 Ne7 Rh1 Rg8 h8B Rg7 h7 Ng8 Rg1 Rb7 Bg7 Rb6 h8B Qb3 Ke2 Qbd5 Rb5+ Kc4 Rf1 Bd2 R5b4+ Kc3 Qd8 Qb3 Be5 Qc2 Qdf6 Qb3 Rb1 Kc2 Rd1 Kb2 Rf3 Bc1 Rf2 Qe6 Bb8 Qd6 Kf1+ Ka1 Rb2 Qc3 Ke2 Qd3+
1B1BQ2q/br2pr1n/1NBQ3n/p1R4b/2B3p1/p1R1Q3/PN2n1P1/3KN1bk w - - 0 1 illegal: No proof kernel
5QrQ/3RP2N/3R1bn1/R1KRqq2/q2n4/kP1B1b2/p1RrNp2/B2n2R1 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 d5 c4 e5 cxd5 exf4 a4 Nf6 axb5 Ng8 Kf2 Kd7 h4 Kd6 d4 g5 e4 a5 h6 f5 h7 c5 h5 a4 b6 g4 b7 a3 h6 c4 b3 c3 Bd3 c2 Nd2 f3 Ke3 g3 Bb2 c1N Ne2 g2 Rg1 f2 Nf3 f1Q Ng5 Nc6 b8R Qf6 Rb6 Be7 e5+ Kd7 e6+ Kd6 Qe1 Bb7 Qf2 Rd8 Ra2 Qg7 Ba1 Bf6 Rc2 a2 Rb5 Rd7 Ra5 Nge7 Qf3 Rg8 h8R Ba8 h7 Ng6 e7 f4+ Ke4 Bb7 Qf2 f3 Ke3 Kc7 d6+ Kb6 d5 Nd4 Ke4 Rdd8 d7 Bc6 Ke3 Ba8 d6 Bc6 Rh1 g1Q Rd5 Qg4 Rg1 Qf5 Ra5 Q1h3 Rd5 Qhg4 Ra5 Rdf8 d8R Ba8 Rd7 Rd8 Qh4 f2 Qh6 Bf3 Rd5 Qf7 Qf8 Qh5 Ra5 Qc4 Rd5 Qa4 Ra5 Rg7 Rg8 Qh2 h8Q Qg3 Nh7 Qge5+ Be4 Nd3 Rd1 Nc6 Rdd2 Nb2 Rdd5 Nd1+ Kd3 Qa3 Kc4 Nd4 Bd3 Rf7 Qe8 Rf8 Rg7 Rg8 Qf8 Nf4 Rg1 Ng6 Rac5 Ka6 Rb5 Qa4+ Kc5 Qff4 Rc7 Qff5 d7 Ra8 d8R Rc8 Rb8+ Ka5 Rd6 Rd8 Rcd7 Nb5 Kc6 Kb4 Ra8 Ka3 Ra5 Nd4+ Kb6 Rc8 Rb2 Rc1 Rc2 Rb1 Kc5 Rb2 Rc1 Rd2 Rc3 Qee6 Rc2 Qee5
BQ2qBB1/4p3/pp6/rrqP2k1/1R3bbq/NP1RB2B/5NK1/R2qR2n w - - 0 1 legal: proof: e4 d5 a4 f5 h4 fxe4 c4 g5 hxg5 b6 cxd5 Nd7 a5 Nc5 a6 Nb7 axb7 Bg7 Ra3 Bh6 Ra1 Bf8 b8R Kf7 d4 Kg6 g4 c5 f4 h5 Kf2 h4 b3 h3 f5+ Kg7 f6+ Kg6 f7 h2 d6 a6 d7 e3+ Kg2 e2 Na3 e1Q Nh3 c4 Be3 c3 Nf2 Bh6 f8B Qe8 d8R Be6 Rbc8 c2 Rc4 c1Q Rb4 Rc8 Qf3 Qe2 Qa8 Qc5 Qb8 Nf6 Rg1 Nh5 Rd6 Kf7 g6+ Kf6 g7 Bf4 g8B Qd1 g5+ Kg6 Rd8 Bg4 Bd5 Ng3 Ba8 Nh1 Rd5 Kh5 g6+ Kh4 g7 Rh5 Rd8 Kg5 g8B Rc6 Bfc4 Rd6 Bce6 Rd5 Rd7 Qa5 Re1 Rb5 Ra4 Qc3 Rb4 Qc5 Rd8 Be2 Bh3 Bg4 Rd7 Ra5 Rg1 Qd6 Nb1 Kg6 Rf1 Ng3 Na3 Rhb5 Re1 Qc5 Rd5 Bc8 Bf5+ Kg5 Re5 Bd7 Re4 Bc8 d5 Be6 Red4 Bc8 Rd3 Bd7 Ng4 h1Q+ Kf2 Qhh5 Kg2 Qh4 Nf2 Nh1 Bh3 Bg4
N1BR2R1/3RN2r/1N2B2R/K4b2/1rQ1bbqq/PP1rn1n1/n7/q1NkB3 w - - 0 1 illegal: No proof kernel
3n1B1q/1pp4N/2P1RB1R/p5rQ/qpNp3N/R2KnQ2/3P4/R2N1qk1 w - - 0 2 illegal: Other
3qnQKN/R1B2Q2/3nq1r1/5p1R/Rb1Qn3/1b1N1k1P/2BQ1Pn1/b2R1r2 w - - 0 1 legal: proof: d4 b5 b4 c5 bxc5 h5 a4 e5 dxe5 Bb7 axb5 Bc8 g4 hxg4 Kd2 Ke7 Ke3 Ke6 Kd4 Kf5 Kd5 a5 e4+ Kg6 c4 Kh5 h3 g5 e6 f5 c6 a4 c7 a3 c5 a2 e7 d6 e8Q+ Kh4 b6 g3 b7 g4 c6 g2 e5 g3 e6 Ra6 e7 Nd7 Ke6 d5 Kf7 d4 b8R d3 Ne2 g1Q Nbc3 g2 Bf4 d2 Rb4 Ngf6 Nd5 Nb6 Nc1 Nc4 Ra4 Rh6 Qd7 Rg6 e8Q Bb4 Bd3 Qe1 Bc2 g1N Nd3 Ne2 Ne7 Ng3 Qd4 Qe6+ Kf8 Bd7 c8Q Nd6 c7 Nge4 Qe2 d1N Qd2 Ne3 Rhd1 Rg1 Ng6+ Kh5 Qa8 Ng2 c8R Rf1 Nh8+ Kh4 Be5 Rb6 Ra7 Ba4 Qb7 Rc6 Qf7 Bb3 Kg7 Ra6 Qef8 Nfe8+ Kg8 Rb6 Rab1 a1B Rc4 Nc8 Bc7 Ncd6 Rb2 Rc6 Rba2 Ra6 Ra4 Rb6 Qe1 Kg5 Qd2+ Ne3 Nb2 Kf4 Nd3+ Kf3 Rc6 Ng2 Rc4 Nb7 Rc6 Qed5 Rh6 Rg6+ Qfg7 Nbd6 Rh5 Rf6 Qgh6 Qe6 Qf8 Rg6+
2r1n3/2Q3B1/N1Pn1b1n/NpK5/1B1r1RqQ/1R1r2PB/b1rp1NB1/N1k5 w - - 0 1 legal: proof: e4 a5 b4 axb4 h4 c5 d4 f5 exf5 g5 dxc5 Kf7 hxg5 Ke8 Kd2 Kf7 Ke3 h5 Kd4 b5 f4 d5 a4 b3 c4 h4 g6+ Kf6 g3 e6 a5 h3 a6 b2 a7 h2 c6 Rh4 g7 Bd7 c7 Ne7 c8B e5+ Kc5 e4 Bg2 e3 Nd2 b1R Ra4 d4 Nh3 d3 Qc2 e2 Nb3 e1N Nf2 d2 Na1 Nf3 Ba3 Rb3 Bb4 Rd3 Rb1 h1R Rb3 Nd4 g8Q Re1 Qg4 Be6 Qh3 Re4 Qc1 Rg4 Qh4+ Rg5 Bd7 Bg7 Qc3 Ng8 Qc2 Nbc6 Qc1 Rc8 a8N Bf7 Nc7 Nh6 Na6 Bd5 Be6 Qe8 Bd7 Qh5 Qc3 Qg4 Qc1 Kf7 f6 Kg6 f7 Bf6 f8B Ndf5 Bg7 Nd6 Be6 Ne8 f5+ Kh7 Qc3 Rh5 Qe5 Nd8+ Qc7 Ndf7 Bd7 Red4 Be6 Bd8 f6 Nfd6 f7 Kg6 Bd7 Bf6 f8N+ Kf7 Ne6 Kg6 Nd8 Bg8+ Kb6 Rc5 Nc6 Be6 Na5 Kf5 Qb8 R5c7 c5 Ke5 Rb1 Ba2 Rb3 Rc4 Qa7 Kd4 c6 Rc2 Be6 Rd7 Qc7 Ke3 Bf5 Ke2 Be6 Qf4 Beh3 Qg4 Bc5 Rdd8 Rf4 Ke1 Bb4 Rd7 Ne4 Kd1 Nf2+ Kc1 Nd1 Nc4+ Kc5 R7d4 Nf2 Ncd6+
qK1BN3/Rp3Qb1/2bR1QB1/1R2p2R/nbp3Pp/Np2P3/2r2r2/4k1NN w - - 0 1 illegal: No possible last move
2Q2bR1/2NRQ1Kb/np6/2nBr1p1/1PRr1Q2/q2n1b2/kN1QpBP1/1b1R4 w - - 0 1 illegal: No possible last move
B2r4/b1BPR1P1/2Qqrq1Q/N4n1B/1nKB4/1qp2R2/2kpn3/BR2B3 w - - 0 1 legal: proof: c4 b5 h4 d5 cxd5 g5 hxg5 e5 a4 Ba6 axb5 Bb7 d6 Bc8 d4 Bd7 e4 Nc6 d5 Be7 Nc3 Bf6 Nce2 Bg7 Nd4 exd4 f3 Bf5 e5 Be4 fxe4 Nb8 Qh5 Bh6 Qd1 Bf8 Kd2 Kd7 Kd3 c5 b4 h5 g4 f5 g6 a5 g5 f4 b6 h4 b5 a4 b7 f3 e6+ Ke8 b6 f2 d7+ Ke7 e5 a3 g7 h3 g6 h2 Bb2 a2 Qc2 Rh4 Rb1 a1Q Kc4 d3+ Bd4 d2 Bg2 f1Q+ Ne2 Qf4 Rhf1 h1N Rf3 Rh2 Nc1 Rh7 Nb3 Rh3 Na5 Nc6 b8B Qf5 b7 Ra7 Bc7 Qf6 b8B Nh6 g8Q Qb2 g7 Ng3 Qgh7 Nhf5 Qh6 Nb4 Qa4 Ne2 Qc6 Ra6 Ba7 Qa3 Ba1 Qb8 Rfb3 Qb7 Qa4 Qc6 d8B+ Ke8 e7 Kf7 e8R Rd3 d6 Qg6 Bh4 Qf6 Be1 Be7 Bh1 Ke6 Be4 Qd7 Ba8 Qd8 Kb5 c4 Rc3 Qb3 Bg1 Rd4 Rf3 c3 Bgf2 Rc6 Be3 Kd5 e6 Ke4 Bg1 Ne3 Bgf2 Bf8 e7 Nf5 Be3 Kd3 Bg1+ Kc2 Bgf2 Re4 Bd4 Rb6+ Kc5 Rb8 Qc6 Qa3 Kc4 Re6 Bcb6 Qc7 d7 Qf4 Bc7 Rc8 Rd8 Qa4 e8B Bc5 Bh5 Ba7 Rh8 Qd6 Re8 Rd8 Re7 Qb3+
5R1Q/6b1/K2Pqq2/1QN1BQ2/b4bbN/2Rb1N2/P1q4R/Q1nk2bN w - - 0 1 legal: proof: f4 f5 b4 d5 e4 a5 bxa5 g5 exd5 b5 g4 e5 d4 h6 c4 e4 d6 Kf7 d5 Nd7 c5 Ne5 fxe5 f4 Bg2 Ra6 Bh3 h5 d7 Rd6 cxd6 Rh6 Nc3 Rf6 Nb1 Rf5 gxf5 Nh6 Bg4 hxg4 Bb2 Ng8 Ba3 Kg7 Bc1 Kf7 Kd2 c5 Kc3 g3 h4 c4 Kb4 g2 e6+ Kf6 e7 Ke5 e8R+ Ne7 f6 c3 f7 e3 h5 Ke4 a6 f3 h6 c2 h7 e2 h8Q e1Q+ Nd2+ Kd3 a7 f2 a8Q f1B Qc6 g4 Nf3 g1B Bb2 c1Q Rh2 g3 Be5 Qc2 Rc1 Bg7 f8N g2 Ng6 Be3 Rf8 g1B Ngh4 Bf4 Qb7 Qb6 d8N Nf5 d7 Ng3 Ne6 Ne2 d8Q Qbf2 Ka5 b4 d6 b3 Qbb6 b2 Qg5 b1B Nc5+ Ke3 Qb5 Bg4 Ka6 Bg2 Nd4 Bc6 Nd4f3 Qff1 Qf5 Bd7 Qb2 Ba4 Nde4 Qff2 Qd5 Qff1 Ng3 Qff2 Rd1 Nc1 Nh1 Ke2 Qc3 Bc6 Rd3 Ba4 Ng2 Qh4 Qa1 Qe7 Qb7 Qf6 Rc3 Kd1 Ngh4 Qee4 Qc6 Qc4+ Qb5 Qce6 Qab2 Qd2 Qa1 Bd3 Qg8 Qe2 Qh8 Qc2
1N1R3N/1r4rp/B1q4b/Nn2QQnP/P1b4q/kb2K1nR/n6R/2R2NQ1 w - - 0 1 legal: proof: c4 d5 cxd5 f5 b4 a5 bxa5 Kf7 e4 Ke8 exf5 g5 f4 Qd6 f6 Qd8 f5 Kf7 Ba3 Ke8 Bd6 Nh6 Be5 Ng8 Bf4 gxf4 Ke2 Kd7 h4 Kd6 d4 e5 a4 c5 g4 b5 a6 b4 h5 c4 g5 f3+ Ke3 b3 a7 b2 g6 e4 g7 c3 f7 c2 f6 c1Q+ Nd2 b1N Rh3 f2 Ba6 f1B Ne2 Qc2 Ng3 Qcc7 Nb3 Bc4 Na5 Nc3 Nf1 Qc6 Rc1 Nh6 g8R Be6 Rg2 Na2 Rgh2 Rg8 Qe1 Bg7 f8N Bb3 f7 Qh4 Ng6 Nf5+ Kd2 Bc4 Nh8 Ng3 Ke3 Bf8 Qf2 Rg7 Qg1 Bb3 Kd2 e3+ Kd3 e2 Ke3 Be7 f8Q e1N Qf5 Bf8 Qe5+ Ke7 Qf5 Nf3 d6+ Kd7 Qe5 Bec4 d5 Ng5 Qf5+ Kd8 d7 Kc7 d8N Kb6 Qe5 Kc5 d6+ Kb4 d7 Ka3 Qf5 Rf7 Qe5 Bh6 Qf5 Rg7 Qe5 Qg6 Ndc6 Qe6 d8R Qe8 Bb5 Na6 Nb8 Nc7 Ba6 Nb5 Nd7 Rb8 a8Q Qe6 Qae4 Rb6 Q4f5 Qc6 Nb8 Rbb7
r2b1K2/Nb3PB1/1P3P2/B3b2k/1RB4q/Bbp3Rp/1N1Qp2n/2RB2r1 w - - 0 1 legal: proof: b4 a5 h4 g5 c4 gxh4 a4 f5 e4 d5 exf5 b5 cxd5 Nc6 axb5 a4 Qb3 Kd7 Qd1 Na5 bxa5 Ke8 Ke2 Kf7 Ke3 e5 Ke4 h5 g4 c5 f4 c4 d4 a3 d6 a2 Kd5 e4 d7 h3 g5 h4 g6+ Kf6 a6 e3 a7 h2 g7 h3 Qd2 c3 Na3 Bd6 Nc4 Bb4 Nf3 Ba3 Rb1 a1B Nfe5 Qe8 d8B+ Be7 Ba5 Ba6 b6 Bd6 Nc6 Be7 Ba3 Bb4 Nb2 Qb8 Bc4 Qc7 Rhc1 Kf7 f6 Kg6 Ke6 h1B d5 Nh6 g8R+ Kh5 f5 Qg3 f7 Qh4 d6 Bb7 d7 Ng4 d8B Bd6 Bf6 Nh2 Rg3 Be5 Bg7 Rhg8 f6 Bd5+ Ke7 e2 Bb3 Raf8 Bd1 Bb3 a8B Rd8 Nc4 Bb2 Na7 Bc6 Bb7 Ra8 Ba6 Bg2 Bf8 Rg4 Bg7 Bb7 Bb5 Bc7 Ba6 Bd8+ Kf8 Rg6 Bd6 Ba3 Nb2 Bc5 Bc4 Bd4 Ba3 Be5 Na4 Ba2 Rb4 Bb3 Nb2 Rg5 Rd3 Rg2 Rg3 Rg1
1r2RB1N/pq2np2/q7/rqP1N3/P1BPRK1B/n6B/QNB3np/7k w - - 0 1 legal: proof: f4 d5 b4 e5 c4 exf4 cxd5 c5 bxc5 Kd7 g4 Ke8 Nf3 h5 Ng1 g6 h3 Bh6 g5 Bg4 gxh6 g5 Bb2 Bd7 Bc1 g4 Qb3 g3 Qd1 Bg4 hxg4 Qa5 Rh4 Qb6 Rh1 Qd8 e4 Kd7 Ke2 b5 Kf3 h4 a4 h3 d4 b4 d6 Kc6 d7 g2 g5 h2 h7 b3 g6 b2 e5 Kd5 e6 Qa5 d8B Qc7 g7 Ne7 Qc2 Qc6 Nd2 b1Q Nc4 Qbb7 Nb2 Qca6 Be3 Rg8 h8N Nbc6 Re1 Na5 Bd3 Rf8 g8B Rb8 Bgh7 Nc4 Re2 Na3 Bc4+ Kc6 Kg4 f3 Bh6 f2 Re4 f1Q Nf3 g1N Kf4 Re8 Bf8 Ne2+ Kg5 Qb1 Re1 Nf4 Qb3 Ng2 Qa2 Qd3 Kg4 Qdb3 Kg3 Q3b5 R1e3 Ng6 Bh4 Ne7 Bf5 Red8 Bh3 Rd6 Ne5+ Kc7 Bd3 Rc6 Bc2 Rb6 Nec4 Kc6 Re2 Kd5 Ne5+ Qc4 R2e3 Rb5 Re1 Ra5 R1e2 Nc8 e7 Qab5 e8B Ne7 Bed7 Q5a6 Bb5 Qb3+ Bbd3 Qbc4 Qa1 Qcb5 Qa2+ Qb3 Nf3 Ne3 Re6 Nc6 Qa1 Q3b5 Re8 Ne7 Ne5 Qb3 Bd1 Q3b5 Bc4+ Ke4 Re1 Q7c6 Qa2 Qcb7 Bde2 N3d5 Bb3 Nf4 Bc2+ Ke3 Kg4 Ng2 Bc4+ Kd2 Rd1+ Ke3 Rd3+ Ke2 Kg3 Kf1 Re3+ Kg1 Re4 Kh1 Kg4 Ne3+ Kf4 Ng2+
1Nr2Q2/1rkPB2K/Br2bBNP/RRn5/6p1/qp2RP1n/1b6/1b3nBB w - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 d5 c4 h5 cxd5 Ra5 gxh5 Ra8 Ke2 Kd7 Kf3 g5 Ke4 e5 h4 b5 a4 c5 d4 g4 h6 b3 h7 c4 f6 c3 Kf5 e4 Kg6 c2 f7 b2 h5 b4 h6 b3 d6 e3 a5 e2 a6 e1N d5 Ng2 a7 Be7 f8R Qc7 Qf3 Qb7 Na3 b1B Nh3 Ne3 Ba6 Qb5 Rf5 Qc4 Re1 Ba2 Nb5 Qf1 Nd4 Kd8 d7 Bb1 Ra5 Nf6 Nf4 Nh5 Nc6+ Kc7 d8B+ Kd6 Bb6 Nd7 Nb8 Bf6 Ba3+ Nc5 Re2 Re8 h8B c1R Kh7 Bb2 Ng6 Re6 Bf6 Nf4 Rb5 Qe1 Bb4 Nf1 Re3 Bd7 Ba3 Qb4 Rh5 Nb7 Bbd4 Kc7 d6+ Kc8 Ra5 Rc7 Rhb5 Nh3 Qf5 Qa4 Bac5 Qa1 Be7 Qa3 Bdf6 Re5 Bd4 Be6 Qf4 Rc6 d7+ Kc7 Rf3 Rc1 Bg7 Bd5 Qf8 Re6 Nc6 Rc8 Nb8 Rcc6 a8B Bc4 Bgf6 Nc5 Rc3 Rcd6 Bh1 Bd5 f3 Re4 Bg1 Be6 Re3 Ra4 Rb4 Rc6 Rf4 Rb4 Rc4 Rb7 Rb4 Rd6 Rbb5 Rdb6
6N1/1q1B2qr/RPrR1n1q/QK1b4/2R1N1P1/2P1nb2/2krB1Rb/B2N2n1 w - - 0 1 legal: proof: e4 b5 h4 c5 a4 g5 hxg5 f5 axb5 Na6 exf5 Nb8 d4 cxd4 Kd2 Kf7 Kd3 e5 Kc4 d5+ Kb3 a5 Ka4 h5 b4 d3 f4 e4 g4 d2 f6 Ke6 f5+ Ke5 g6 Kd4 b6 e3 f7 h4 b5 h3 g7 e2 f6 e1N b7 h2 b6 Rh7 Bd3 Nf3 Nh3 Bd6 f8R Qc7 f7 Ne7 g8B Ng1 Nf2 Nf5 Qf3 d1R Be2 Be6 Ne4 Nd7 b8R Nf6 Kb5 a4 Rfd8 a3 f8N a2 Nbc3 Rd2 Nd1 Qb7 Ng6 Ne3 Rbc8 Bf7 Rc3 Rc8 Qf5 Rc6 Bb2 Bf4 Rd6 Be5 Rc1 a1Q Ne7 Qaa7 Ba1 Be6 Nc8 Qg7 Ne7 Qb7 Nb2 Bg3 Ra3 Bf7 Ra6 Be6 Nf2 Kc3 Bf7 d4 Be8 d3 Ng8 Bd5 Bd7 Nf3 Rhg1 h1Q Qg5 Qhh6 Rg2 Bh2 Ne4+ Kd4 Ka5 Ng1 Nd1+ Kc4 c3 Kb3 Rb1+ Kc2 Rb4 Qhg6 Rc4 Q6h6 Bf1 Re2 Kb5 d2 Ndf2 d1B Qh5 Rd2 Be2 Bf7 Qc5 Be6 Qa3 Bd5 Qa5 Qhg6 Bf1 Be2 Nd1 Bf3 Be2 Q6h6
3NkN2/4B1nP/2rRr1n1/1qRR1nKR/rP1B3P/2nB1rb1/1Q4N1/nb6 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 d5 c4 e5 cxd5 exf4 a4 Nf6 axb5 Ng8 Kf2 g5 Kf3 c5 e4 f5 d4 a5 b4 a4 d6 a3 d5 c4 b6 a2 h6 c3 h7 c2 e5 Nc6 b7 Ra5 b8R Nh6 e6 Ne7 Rb6 Qd7 Qd2 Qb5 Nc3 Ra4 Nh3 Ng6 Bb2 c1R Ne2 Rc6 Rc1 a1N e7 Ba6 Bd4 g4+ Kf2 g3+ Kf3 g2 Ng5 Bg7 Ne6 Be5 Qb2 Bb7 Rc5 g1N+ Kf2 f3 Ke3 f2 Nf8 Rg8 Nf4 Ne2 Ng2 Nc3 Bd3 f1R h4 Rf2 Rd1 Bg3 Rd2 Re2+ Kf3 f4 d7+ Kf7 e8R Nf5 Kg4 f3 d8B f2 d6 f1N d7 Ree6 Rd1 Ng7 Be7 Ne3+ Kg5 Nef5 Ra8 Rh8 d8N+ Ke8 Ra5 Rg8 Nd7 Rf8 Rd2 Rc7 Rd6 Be4 Rdd5 Rf7 Nf8 Rff6 Ra6 Rc8 Rad6 Rc6 Re5 Bd5 Rd1 Ba2 Red5 Rf7 Re1 Rff6 Ree5 Bb1 Nf7 Ne3 Kh6 Ra7 Rh5 Rf3 Nd8 Nef5+ Kg5 Ra4
1N1Qq1B1/Rqbrq2R/2pb3N/4k2K/4qqBB/1nP1P1NN/3r2P1/2R1n3 w - - 0 1 legal: proof: f4 e5 a4 exf4 h3 b5 axb5 Bb7 d3 Be4 dxe4 g5 e5 g4 hxg4 Qe7 Nd2 Qg5 Nb1 Qd8 Kf2 Ke7 Kf3 Ke6 b4 a5 e3 f5 b6 h5 b7 d5 g5 d4 b5 a4 b6 c6 g6 h4 g7 d3 Ra3 d2 Qe2 d1Q Nc3 h3 Bd2 h2 Ne4 Na6 b8N Qe7 b7 Nb4 Rc3 a3 Nd6 a2 Ra3 a1B Rd3 Ra2 Be1 Nh6 g8R Rh7 Rh8 Qb1 Ra3 Nd3 Ne4 Qb6 Bh4 Ne1+ Kf2 f3 Kg3 f2 Qd3 Bd4 c3 Rd2 Be2 f1Q Ra7 f4+ Kh3 f3 Ng3 f2 Nd7 Bc5 b8N Qb7 Bg4+ Nf5 Nf6 Bb6 Qd8 Bc7 Ng8 Qd3 Nh6 f1Q Bf3 Qdb1 Kg4 Qe4+ Kh5 Nd4 Nh3 Nb3 Bd1 Rf7 Rh7 Qff4 Rg1 h1Q Be2 Nf3 Rc1 Qf1 Bd1 Ne1 Bf3 Qd6 Bg4+ Kd5 e6 Rd7 e7 Ke5 e8B Qdf6 Bd1 Bfd6 Bg4 Qe7 Bf7 Q1f3 Bc4 Qff8 Be6 Q3f4 Bg8 Qfe8+
1N1r3B/1NPPqB1B/1P1bp1R1/3b2nq/Rrn1k2r/K1Q4N/B6R/3r2q1 w - - 0 1 illegal: No proof kernel
3B2Nr/2q1Np2/kp3R2/p4q2/nP3B1b/1bRK1brn/P1B1P1qQ/N1B4R w - - 0 1 legal: proof: f4 e5 g4 exf4 c4 d5 cxd5 h5 gxh5 Rh7 Kf2 Rh6 Ke1 Rh8 b4 Kd7 h4 c5 d4 Kc7 Kd2 Kb6 d6 a5 h6 g5 h7 g4 d7 c4 d5 f3 d6 g3 h5 f2 h6 g2 Nc3 Be7 Nf3 g1Q Bh3 f1B Bf5 Bf6 Bc2 Qg2 Nd5+ Ka6 Nd4 c3+ Kd3 b6 Ne7 Bb7 Nb3 Qc7 d8B Bf3 d7 Bh4 Rb1 Qc8 Na1 Nf6 Bc7 Ne4 d8B Qf5 B7f4 Nd7 Rb3 Rc8 Ng8 Ndc5+ Kd4 Na4 Kd3 Rc4 Qe1 Rc6 Qg3 Rg6 Qh2 Rg3 Nf6 Rhg8 h8R Rf8 h7 Nf2+ Kd4 Nh3 Ng8 Qg4 Kd3 Re8 Bd1 c2 Rc3 Qh5 Bcd2 c1Q Bc2 Qb1 Bc1 Qc5 Nh6 Qc7 Rg8 Qb7 h8N Qc7 Ng6 Rf8 Rg7 Rh8 Ng8 Bd5+ Bce3 Bb3 N6e7 Qf3 Rg6 Bg2 Rgc6 Qf2 Re6 Bf3 Rf6 Qg2 Bd2 Qbf1 Bc1 Qff2 Bd1 Qfc5 Bc2 Qf5+
b1q4r/N3bB2/1k1BR2p/r1NPK3/3BRbp1/rrQRR1P1/p2N3P/3n1n2 w - - 0 1 legal: proof: c4 d5 cxd5 e5 a4 b5 f4 exf4 axb5 Ba3 Ra2 Bb4 Ra1 Bf8 Kf2 Kd7 Kf3 c5 Ke4 Kc7 d4 f5+ Ke5 a5 e4 g5 b4 h6 d6+ Kb6 d7 g4 g3 f3 Be3 c4 Qe1 f4 Nd2 f2 Nh3 c3 Ra4 f3 Ng5 c2 Ne6 c1B Nc5 Ne7 Bc4 f1R Bf7 f2 d5 Ra6 Bd4 Bb7 Ra3 a4 Rd3 Qe8 d8N a3 Nc6 a2 Na7 Ba8 Qe3 Rd1 Re1 f1R Qf3 Ra5 Ree3 Na6 Qf6+ Kc7 Qf3 Qc8 b6+ Kd8 b7 Kc7 b8B+ Kb6 b5 Nf5 Bd6 Be7 Kf4 Rh1 e5 Nb4 e6 Nc2 Ke5 Rhf1 Re4 Nfe3 Qf6 Rf3 Qg7 Bg5 e7 Ba3 e8R Nf1 Re6 Nce3 Qf6 Rb1 Qg7 Nd1 Qf6 Ra4 Qg7 Ka5 b6 Rb3 b7 Kb6 Qf6 Ra5 b8R+ Qb7 Rbe8 Qc8 Qf4 Bc1 Qe3 Be7 Qe1 Rba3 Nb1 Bcg5 Qc3 Rf2 Ree3 Rb2 Nd2 Rbb3 Rf6 Qa6 Rf4 Qc8 Rfe4 Bd8 Re6 Bdf6+ Kf5 Be7 Ke5 Bf4+
4QK2/B1N2nN1/3rP1B1/Rr2P3/RN5b/1k1p1q1Q/NP3nR1/qn3r2 w - - 0 1 legal: proof: f4 c5 g4 e5 fxe5 h5 gxh5 a5 a4 b5 axb5 a4 d4 cxd4 b6 a3 Nxa3 Ke7 Nb1 Ba6 b7 Ke8 Rxa6 Qc8 Ra1 Qd8 Kf2 Ke7 Kg3 Ke6 Kf4 Kd5 Kf5 Kc4 h4 d5 e4+ d3 e6 g5 h6 g4 e5 f6 Kg6 f5 Kf7 f4 h5 f3 h7 g3 h6 f2 Rh4+ d4 Qg4 g2 Be3 Qd6 Na3+ Kb4 c4 d2 c5 d1Q c6 Ne7 c7 Qa6 c8N Ng6 Nb5 Bg7 Ne2 g1R Nc7 Qe1 Qh3 Qa3 Ne7 Na6 b8N Rd8 h8Q Rd6 h7 Nc5 Nf5 Bf6 Nc1 Ne4 Bd3 f1N Qe8 Nh8+ Kf8 Nf2 Na2+ Kb3 Nc6 Nf7 h8R Nd2 Ng7 Ra5 Bg6 Nb1 Ncb4 Rf1 Rg8 Rb5 Rg4 d3 Ba7 Qd1 Rg2 Qa6 Rh8 Qb7 Rh4 Qbf3 Rd4 Bh4 Rd5 Rb8 Ra5 Qc1 Nc3 Rb5 R1a4 Na3 Nca2 Qa1 Be3 Nb1 Bd4 Qf6 Ba7 Qf3
Q1N2KR1/3BN3/bN3Q1b/RB2B2r/3p4/PP1r1q1r/1p2qP1N/n1r4k w - - 0 1 legal: proof: e4 a5 g4 h5 gxh5 f5 exf5 c5 d4 cxd4 Bc4 b5 Be2 a4 Bf1 a3 bxa3 b4 Bh3 b3 Qd2 b2 Bf1 Nc6 Qd3 Na5 Qd1 Nb3 axb3 Rh7 Be3 Rh6 Bc1 Rh8 Kd2 Kf7 Kd3 Kf6 Ke4 e5 Kd5 g5 h4 d6 c4 d3 c5 d2 h6 e4 h5 g4 h7 Kg5 h6 Kf4 f6 e3 c6 e2 f7 e1Q c7 g3 Qf3+ Kg5 Nc3 g2 Ne4+ Kg6 Bb5 Ra7 Rh5 Ba6 Ke6 d1R c8B d5 Bcd7 d4 Bf4 Ra8 Be5 Qe2 Nd6 Rd3 Nc8 Nf6 Qd5 Qc7 Nf3 g1R Nh2 Rc1 Qb7 Ra7 Qa8 Ng4 Rb1 Bg7 Ke7 Qb7 Ra1 Ne3 Rb1 Rd8 h8Q Qbf3 h7 Nc2 Rg5+ Kh6 f8N Na1 Rf5 Rac7 Rg5 Rh1 Rbg1 Rc1 R1g4 Rhg1 Rf5 Rg3 Kf7 Rh3 Rg5 Bf6 Rg8 Bg5 Qf6+ Kh5 h8N Kh4 Ke7 Re8+ Kf7 Re6 Kg7 Rd6 Kf7 Rd5 Nhg6+ Kh5 Nge7 Kh4 Be6 Rdc5 Nd7 Rd5 Ndb6 Rdc5 Qg7 Bh6 Bed7 Rd5 Kf8 Rdc5 Rf6 Rd5 Bb8 Rh5 Rf5 Rg3 Be5 Kh3 Bd6 Kg2 Be5 Be3 Qg6 Kh1 Qf6 Rgh3 Bbc6 Rc4 Bb8 Ra4 Ra5 Rc4 Bb5 Rc1 Be5 Bh6+
N3K1R1/R1QNbqbb/8/2Qq1Rr1/2P1knPP/6pB/qR1r3B/3n1r1N w - - 0 1 illegal: No proof kernel
2B3Bk/P2p3n/1NR3rQ/1rN1b1r1/K1QP3R/1q2r1p1/1Rnr1nP1/5B1B w - - 1 2 illegal: Other
n2RRq2/3p2Bp/1PK5/2Q1R3/p3r2r/PN1B1kNP/Qrbbn1bR/N4q2 w - - 0 1 illegal: Other
Q1r1B3/1R2NN1K/p1rpnr2/1bbn2Br/3kN2R/1bR3p1/PP1P1R2/1Q2q3 w - - 0 1 illegal: No possible last move
1rB2Q2/qP1ppn1p/R1b3qB/1p2r2k/N4Q2/1q1NP2P/2N1K2N/1nRQ2b1 w - - 0 1 illegal: No proof kernel
kNN2b1Q/1R1n2P1/bB2p3/3rQB2/1q3Q2/2ppQ1r1/P1PQq3/B1K1nr2 w - - 0 1 legal: proof: d4 a5 b4 g5 bxa5 e5 dxe5 d6 h4 Qe7 hxg5 Qd7 e6 Qd8 e7 Kd7 e4 Kc6 e8Q+ Nd7 e5 Be7 e6 Bf8 e7 Kc5 Nd2 Nb8 Rb1 Qd7 Rb3 Qd8 Re3 Ra7 Re4 Ra8 Re6 fxe6 g4 h5 f4 b5 g6 d5 a6 Kb6 a7 Kb7 g5 c5 f5 h4 f6 b4 g7 b3 f7 b2 g6 b1Q Qb5+ Qb6 e8Q c4 Ne4 d4 Kd2 d3 Nf3 h3 Ne5 h2 Bh3 Rh7 Bf5 Nc6 Nd6+ Kc7 Bb2 Bd7 Ba1 Rh6 Nc8 Qb4+ Kc1 Kb7 Qd2 Nd4 Nc6 c3 Qe5 Nf3 Nb8 Nf6 g8Q Ne1 g7 Rg6 Qh8 Bb5 Qe7+ Qc7 Q7c5 Nd7 Qce3 Ba6 Qhh6 Rg3 Qhf4 Qcc5 Rf1 h1R Rf3 Bd6 f8B Rf1 Be7 Qcd4 Bd8 Bf8 Bb6 Qe4 Q3d4 Qe2 Qd4e3 Rh1 Rf1 Rh2 Rh1 Rf2 Rh8 Rf1 Rg8 Bc5 Rf8 Be7 Rf7 Bf8 Nc6 Bb5 Bd8 Bd6 N8e7 Nf8 Bb6 Re8 Bc5 Rd8 a8Q+ Kc7 Bd4 Ba6 Ba7 Rd7 Qd8+ Kb7 Bb6 Bc5 Nb8 Ka8 Nc8 Rd5 Rb7 Nd7 Qh8 Bf8
5q1b/7b/B1N5/Qbq1RQ1Q/4N2K/2P1nPNB/qk3BP1/2r1rQbn w - - 0 1 legal: proof: b4 a5 h4 g5 hxg5 f5 e4 b5 exf5 c5 a4 Ra7 d4 Nh6 dxc5 Ra6 Ra3 Ra8 Rb3 Rg8 axb5 Rh8 b6 Ng8 b5 Nh6 Rb2 Ng8 Rb4 axb4 f6 Kf7 c6 Ke6 b7 Ke5 f3 h5 Kf2 d5 Kg3 b3 g6 h4+ Kh2 d4 b6 d3 g7 Kd4 c7 e5 f7 b2 Qe1 e4 Na3 b1Q Qe2 Kc3 Qd1 h3 Kg3 h2 Qe2 e3 Qe1+ d2 Nc4 e2 Ba3 Na6 b8Q Bc5 f8Q Bf5 c8B Nh6 g8Q Ng4 b7 Nf2 Qf4 Nc7 b8N Nd5 Qc1 d1B Qc7 e1B Qgg5 Be2 Nc6 Be3 Qfh6 Qf8 Bc5 Ra1 Nd6 Qa2 Qh3 Rh4 Qh5 Bh7 Qa5+ Rb4 Bf5 Bd4 Q3g4 Bh8 Kh4 Bd2 Qe4 Be3 Bh3 Bc4 Qef5 Bed4 Qd8 Rbb1 Qd1 Be3 Ne2+ Kb2 c3 Bed4 Rg1 h1Q Ng3 Qh2 Qe1 Nh1 Qa5 Rd1 Be2 Rac1 Qf2 Ba6 Re1 Qg1 Qf1 Qe3 Bc4 Qe5 Ba7 Bg1 Bf2 Qe3 Bb5 Qc5 Re5 Ne3 Nde4 Re1 Be2 Bb5 Bd3 Ba4 Ba6 Bb5
3RR3/8/KN2p1Rq/BbP1R3/1R1nR3/q2PP3/Bb1r1N1b/2knBrbq w - - 0 1 illegal: No proof kernel
R1rb4/1B1P1RP1/6KB/2N1b2n/N4RbR/1pr2Pq1/2q3kB/4BnqN w - - 0 1 legal: proof: c4 a5 g4 h5 e4 f5 exf5 d5 cxd5 a4 f3 a3 bxa3 g6 a4 Be6 a5 Bd7 Qe2 Bc8 Qe6 Nc6 fxg6 Nb8 g5 Bh6 Qh3 Bf8 Qg4 hxg4 Kf2 Kd7 Kg3 Kd6 Kf4 b5 d4 c5 a4 g3 h4 b4 g7 c4 a6 g2 g6 c3 Kg5 b3 a7 c2 h5 Bd7 a5 Rh7 a6 Qc7 h6 e5 Ne2 g1B Ng3 e4 Ra4 e3 Nd2 e2 Nde4+ Ke7 d6+ Ke6 d5+ Ke5 Rh4 e1Q Nh1 Bf5 d7 Qca5 d8B Bd7 d6 Qc5 Ba5 Ne7 g8R Nf5 Rg7 Ng3 Rf7 Bg7 Bb5 Qcf2 Bc6 Nf1 Bb7 Bg4 Nc5 Nd7 Raf4 Rc8 a8N Qg3 a7 Nf6 Nb6 Nh5 a8R Qef2 Be3 c1Q Nba4 Qcc2 Be1 Bh2 Bc1 Qfg1 d7 Rhh8 h7 Bf6+ Kh6 Bd8 Bcd2 Re8 Be3 Re6 Bc1 Rec6 h8B+ Bf6 Bg7 R6c7 Bf8 Bd8 g7 Rc6+ R4f6 R6c7 Bd6+ Kd4 Bg5 Rc6 Rf4+ Ke3 Ne4 Rc3 Kg6 Ke2 Be5 Ne3 Bh6 Kf1 R4f5 Kg2 Nec5 Nf1 Bef4 Q3f2 Bb8 Be5 Bd6 Bd4 Bdf4 Be5 Bh2 Qd1 R5f6 Qg3 Rf4 Qc2+
b4kbq/1N2r3/1p4b1/1P1pnnP1/B3r2P/B2P1B1b/R1K1NR2/Q1b2nRN w - - 0 1 illegal: No proof kernel
2Bb4/1b1P2n1/k2qrpPp/3P2RK/1Qq2QNP/b1RpBq2/1NrQ1B2/8 w - - 0 1 illegal: No proof kernel
1bnq1R2/n2RB2B/p2P1PpN/Br3pp1/1b4P1/P1k1K3/1b1R2Q1/n3NQ2 w - - 1 2 illegal: No proof kernel
3Qr3/RBB1R2q/1P2B3/b3p1n1/1n2b1BK/BnPbN1pN/2P2Pp1/1k2r3 w - - 0 1 illegal: No proof kernel
bKB4N/2r4P/1nq3Q1/bpb4R/N4b2/PkP3P1/1BrR3N/B3nbrN w - - 0 1 illegal: No proof kernel
2K5/rp1P3R/PpP1kq2/pn2B1b1/P2Q2q1/1NN2RBn/1q2B1R1/4R1nb w - - 0 1 illegal: No proof kernel
b3b3/1qrN1n2/1Pkppp2/4P2K/1Bp5/bR1bN2Q/1P1PNr2/NBn1B2R w - - 0 1 illegal: No proof kernel forced: bxDB
Nn5n/N3b1RR/PB2K2b/P1QN3b/qqp3QN/np3B1n/1PP4r/k5r1 w - - 0 1 illegal: Other
1Rr3NB/5b1q/1nppQ1Q1/1pbQ1n1N/2PR1P1k/2q1P2B/n1rP1K2/4Q1q1 w - - 0 1 illegal: No proof kernel
1q2qB2/3pr3/1bprp2b/R1P1P1k1/b1qQB3/nQP4Q/2NPb2Q/1N3K1R w - - 0 1 illegal: No possible last move, all moves rejected
B3n3/R3r3/3Pqb2/2Kq1B2/Q2P1N1p/1NP5/1BPP1rbR/N2q1bk1 w - - 0 1 legal: proof: h4 b5 a4 d5 axb5 e5 e3 c5 h5 d4 exd4 e4 h6 e3 fxe3 gxh6 Kf2 h5 Ke1 c4 d5 c3 bxc3 h4 Bc4 Nc6 Bf1 Nd4 exd4 Bb7 Be2 Ba6 Bf1 Bc8 Ke2 Ke7 Ke3 Kf6 g4 Kg5 d6 h5 b6 a5 b7 f5 b8N f4+ Ke4 a4 Kd5 a3 Bb2 a2 Ba6 h3 Nd7 Kh4 g5 Kg3 g6 Kg2 g7 f3 Be2 h4 Qe1 f2 Kc5 f1B Bd3 h2 Na3 Ra7 Ne2 Qe7 Bf5 Bb7 Nc4 Qe6 Na5 Be7 Nb3 Nf6 g8B Ne8 Bgh7 Bf6 Nf4+ Kf3 Qe4+ Kf2 Qc6 Rf8 Qa4 Bbg2 Be4 Rf7 Ba8 Re7 Bf5 Rb7 Rc1 a1Q Rd1 Qa2 Ra1 Qb1 Ra3 Qd1 Na1 Rf7 Nb6 Rbd7 Nc4 Rde7 Na5 Rf8 N5b3 Rff7 Rg1 h1Q Ra2 Bb5 Re1 Bbf1 Re3 Kg1 Rh3 Rg7 Ra3 Rg3 Rh2 Rf3 Qb4 Rf2 Ra7 Bh3 Qa4 Qhf3 Qa6 Bhg2 Qa4 Qfd5+
n2B4/p1Q3p1/1p4P1/1bN2qn1/qKRP1Nq1/n1P1R1P1/1PBrBp2/2N4k w - - 0 1 illegal: No proof kernel
B1r5/N2Pr1b1/r4b2/NK1Qbpp1/nP3Pbk/B2P1B2/4R1P1/R1n3nB w - - 1 2 illegal: Other
b1q2n1R/pP3pk1/Pq5N/n1N1n1Bp/Qq1P1P1r/4BB1r/1KP1N3/1B6 w - - 0 1 illegal: No proof kernel
B1rb1RN1/B4Np1/rP5b/3qb1P1/1k1n3P/3QrPK1/1BbPB3/2n3Q1 w - - 0 1 legal: proof: b4 b5 g4 h5 e4 f5 exf5 a5 bxa5 d5 c4 e6 cxd5 Be7 a4 Ba3 axb5 Bd6 Ra4 Bf4 Rc4 Bh6 g5 Qf6 Rh4 Qd8 Rg4 hxg4 h4 Ke7 f3 Kd6 Kf2 Kc5 a6 g3+ Kg2 e5 a7 e4 f6 e3 d6 e2 d7 e1R f7 Nc6 f8B+ Nge7 Qb3 Re3 Nh3 Nd4 Qd3 Nb3 Bb2 Kb4 Nf2 c5 Ne4 c4 Nbc3 Nc1 Nd6 Nc6 Be2 Nd4 Nce4 c3 Nf6 c2 Ng8 Qa5 d8Q Bf5 Qb6 Qa2 Qc6 Qd5 Re1 Bg6 Kh3 g2 Kg3 g1B Qb6 Rc8 a8B Rc6 Qa7 Ra6 Be7 Be4 Bd8 Bh7 Bb6 Be4 Nf6 Rc8 Nf7 Bg6 Ng8 Bh2+ Kh3 Bc7 Kg4 Bd8 Kg3 Ncb3 Ra1 c1B Ra3 Na5 Rc3 Nab3 Rc6 Bf5 Re6 Bh7 Re8 Be4 Rf8 Bh7 Ba1 Ba3 Bb2 Nc1 Qd7 Bf6 Ba7 Bf5 Qb1 Bc2 b6 Bd8 Ba1+ Bb2 Qf5 Ndb3 Qd3 Bbf6 Bb2 Nd4 Qa1 Na2 Qh1 Nc1 Qg1 Be5+
2Bn1R2/p1br2QP/PkN1nP1n/4B1K1/5R1P/2n3PQ/n4qPb/R5rb w - - 0 1 illegal: Other
5k2/B3N3/B1q1QNQR/r1RB1bqq/R1K5/B2n4/2pBNn1R/r3b1rR w - - 0 1 legal: proof: e4 b5 h4 d5 a4 g5 axb5 f5 exf5 d4 hxg5 d3 cxd3 Nf6 d4 Ng8 d5 Qd6 Ra5 Qd7 Ra1 Qd8 Ke2 e5 Kd3 h5 b4 c5 g4 a5 f4 h4 f6 h3 f7+ Ke7 f5 a4 d6+ Kd7 f6 a3 b6 a2 b7 h2 g6 Ra7 g7 Nc6 b8Q Nge7 g8B Ra6 b5 Na5 g5 Rh7 g6 Qb6 g7 Nac6 Qg4+ Nf5 Nc3 Kd8 d7 Ne3 Nd5 Be7 f8B Na7 f7 Ng2 Qd6 Qb7 b6 Bh4 Nf6 Qa8 b7 Rh5 b8B Nc6 Ba7 Ne3 Nh7 Nd1 Nf6 Qb8 Qg6 Rg5 Qe7+ Kc7 d8R+ Bd7 Qe4 Ra5 Rc8+ Kb7 Qg6 Qa8 Be2 Rg2 Qe8 Rg4 Be7 Bf2 f8R Rg2 Bb3 Bh4 g8N e4+ Kc2 c4 d4 c3 d5 e3 Kd3 c2 d6 Be6 d7 Rgg5 Rf7 Bg4 Bd2 Nb4+ Kd4 Bh3 Rc3 Bf5 Rh7 Qc8 d8R Qc6 Bb5 Kc7 Bd5 e2 Ba6 Nd3 Ra8 Rg3 Rh8 Rg2 Bb4 Rg3 Qe6 Rg5 Rf8 Rg3 Rf7+ Kd8 Rfh7 Rg2 Rc5 e1Q Bc1 Qf1 Ne2 Qg1+ Kc4 Be1 Bbd2 N1f2 Rh3 Rg3 R8h6 Qg2 Rg1 h1Q Ne7 Rg5 Rg3 Qh5 Rh3 Qg3 Rgh1 Qgh4+ Ne4 Rg1 R3h2 Qg3 Nf6 Qgg5 Rb1 a1R Rb4 Qg3 Ba3 Qgg5 Ne4 Qf6 Ra4 Qfg5 Qg7 Ke8 Qgg6+ Kf8 Nf6 Rg3 Bb6 Rg2 Ba7 Rg1
1Q5b/1RNR2R1/RBr3R1/1B3k2/2NB2RR/1nrK1npQ/4r1br/1R3r1q w - - 0 1 legal: proof: e4 b5 g4 d5 c4 h5 cxd5 f5 exf5 b4 gxh5 b3 axb3 Rh7 b4 Rh6 b5 Rh8 Ke2 Kf7 h4 Kf6 b4 g5 f4 e5 d4 a5 d6 c5 h6 g4 b6 e4 b7 e3 b5 g3 h5 c4 b6 c3 d5 a4 h7 c2 h6 a3 d7 a2 d6 Qe7 d8B Bg7 d7 Bf8 Bb2+ Kf7 f6 Ke6 f7 c1R Kd3 e2 f5+ Kd5 f6 Ke6 Nh3 e1R Nf4+ Kf5 Nd2 Ra5 Nd5 Ke6 Qh5 Rac5 Nc7+ Kd6 Qh3 Bg7 f8R Qe5 f7 Nf6 Nc4+ Kc6 Rg8 Ne8 f8R Re2 Bd4 Nd6 Rf4 Qd5 Rg4 Na6 b8R Nf7 b7 Ng5 Rg1 Be5 Rg7 Qh1 Rb1 a1R Ra8 Raa2 b8Q Rac2 Rb7 Nf3 Raa7 Rf8 h8R Rh2 h7 Rce2 Rhg8 Rf6 Rb1 Bb7 h8R Rd6 Rhh4 Rg6 Nb5 Kd5 Bb6 Ke6 d8R Kf5 Rdd7 Rgc6 Nc7 Rce1 R7g6 Bh8 R8g7 Ba8 Bg2 Rf1 Rb7 Rff2 Rgc1 Rf1 Rc2 Ra5 Ra2 Nc5+ Kc3 Nb3 Kd3 Rac5 Ra6 Ng1 Bd5 Nf3 Bg8 Rd6 Bf7 Rdc6 Be8 Nfd2 Na5 Rce6 Rde7 Nc4 Bb5 Ncd2 Rba7 Bg2 Rb7 Rec6 Rd7 Rc2 Nc4 Nf3 Ba4 Rcc1 Bb5 Rc3+
2n5/r4Qrk/BRN1Q1qp/4n2R/Np2QK1Q/3qp1b1/1qQB3P/3R1B1Q w - - 0 1 legal: proof: c4 f5 f4 d5 cxd5 a5 e4 a4 exf5 a3 g4 Kd7 f6 Ra6 f5 Qe8 f7 Rd6 f6 Qd8 bxa3 Rb6 a4 Ra6 a5 Ra8 Nc3 Kd6 Nb1 Bf5 gxf5 Kd7 Ke2 c5 Kf3 e5 d4 g5 a4 b5 d6 c4 d5 c3 a6 c2 a5 b4 a7 h6 a6 Be7 f8Q Qc7 f7 Qa5 f6 Qd8 Qe8+ Kc8 f8R Rh7 f7 Rg7 d7+ Kc7 d6+ Kc6 Ne2 Qc7 d8Q+ Kc5 d7 Kc4 Qc8 Bd6 d8Q Qc5 Bd2 Kd5 Nd4 c1Q Nc6 Qd4 Qc2 Nd7 Ra5+ Bc5 Kg3 g4 Qh4 e4 Kf4 Ne7 Nc3+ Ke6 Na4 g3 Rg8 g2 f8Q Bb6 Rh5 g1Q Qb7 Qg6 Qff7+ Kd6 Qbc8 Qcb2 Rg1 Ne5 Qce6+ Kc7 Rf8 Qd3 Rh1 e3 Rh8 Rd8 a8B Rd7 a7 Nc8 Bb7 Bc5 a8Q Bd6 Ba6 Re7 Qeg4 Rd7 Qf3 Re7 Qeg8 Kd7 Qe4 Bb8 Qge8+ Kd6 Rg1 Ra7 Qh1 Ng4 Qee4 Ne5 Re8 Bc7 Re7 Bb8 Rb7 Bc7 Rb6 Bb8 Qc7+ Ke6 Qd6+ Kf7 Qb7+ Kg8 Qe6+ Kh7 Qbf7 Qd8 Bh3 Qd3 Rd1 Bc7 Bf1 Bd8 Qg3 Bh4 Qgg4 Bf2 Qh4 Bg3+
b1r2k2/1p2r3/3Q1P2/nrB1np1B/1N2BNQ1/N1qQ3K/RQB2R2/2Q4n w - - 0 1 illegal: Other
8/k1r4N/1n2bBN1/1q3NrB/r1QR2PR/rB1B1b1n/K1Rb1QB1/1Nb5 w - - 0 1 illegal: No possible last move
2q1Q1BB/R1n1R3/BP1r1BN1/1q1rnKN1/k3r3/5b1p/1b1nQ1N1/1N2QB2 w - - 0 1 legal: proof: e4 b5 h4 d5 a4 g5 axb5 f5 exf5 d4 hxg5 d3 cxd3 Nf6 d4 Ng8 d5 Qd6 Ra5 Qd7 Ra1 Qd8 Ke2 Kd7 Kd3 e5 Ke4 a5 b4 h5 d4 c5 g4 h4 f4 h3 b6 c4 f6 a4 b5 c3 g6 c2 b7 a3 f5 a2 d6 Qc7 d5 Nh6 f7 Ra5 f6 Qc3 g5 Ra3 b6 Ng8 g7 Ra6 g6 Qg3 Ne2 Rh7 Qe1 Ra7 Bb2 c1N Nf4 Nd3 Ng2 Rh6 Kf5 Na6 b8Q e4 Bc3 Be7 f8Q e3 f7 Nf6 g8B e2 g7 Nc7 Bh7 Ra8 g8B Ne4 Bh8 Bb7 Qa7 Re8 Qa6 Bf6 Rg1 Rd8 Qe8+ Kc8 f8N Ne5 Qc4 Qd3 Ng6 Nd2+ Qe4 Ba8 d7+ Kb7 d6+ Ka6 Bc4+ Ka5 Bhg8 Bc6 Ba6 Qb5 Qg4 Bf3 Rh1 Rc8 d8B Bg7 Qh5 Ka4 d7 Rb8 Bf6 Rd8 Qc1 e1Q Rh2 Qf2 Qe1 Qfc5 Qg4+ Qcc4 Qge4 Rh4 Q4e2 Re4 Rh1 Bf8 Rg1 Ba3 Rh1 Bb2 Rg1 Rc8 d8N Qcc6 Ne6 Rd8 Ng5 Rd6 N2f4 Red4 Rg4 R4d5 Rh4 Qcc5 Rh7 Qc1 Ng2 Qcc6 Na3 Qc1 Re7 Qc3 Rd1 a1R Nb1 Qc4 Rc1 Ra3 Rd1 Re3 Rc1 Re4 Rc3 Ne6 Rc2 Qc8 Rcc7 Nf4+ Rcd7 Ne6 Ra7 Nc7+
4nk2/2q1N1Nn/b3pB2/BBR3rb/3P3N/1nb5/RB1r2Q1/RbKQ1BR1 w - - 0 1 illegal: No possible last move
1Bb2B1N/nq2pn2/BPR5/2K5/7k/RB4N1/Bq1pNQpr/b1RQ1R1r w - - 0 1 legal: proof: e4 b5 g4 c5 d4 h5 gxh5 f5 dxc5 b4 exf5 b3 axb3 Rh7 b4 Rh6 b5 Rh8 Kd2 Kf7 Kd3 Kf6 Kc4 a5 f4 g5 h4 a4 b4 g4 b6 d6 h6 g3 h7 g2 b7 a3 c6 a2 h5 d5+ Kc5 d4 c4 d3 h6 Ra6 b5 Ra3 b6 Qc7 Nd2 Rb3 Ne2 Rb2 Ne4+ Kf7 f6 Kg6 f5+ Kf7 N4g3 Qd8 c7 Nc6 b8B Bd7 c8B Rd2 Ba6 Bg7 Rh3 Kf8 f7 Rc2 Bd2 Bf6 Rc1 Bh4 Bc3 Nf6 Ba1 Rg8 h8R d2 h7 Kg7 f8R Kh6 Bd4 Ne8 f6 Kg5 f7 a1Q Bg7 Kg4 Bh6 Rg7 Rhg8 Nd4 h8N Rg6 Bg7 Rf6 Bh6+ Bg5 Rg6 Bc8 Bg7 Rf3 Rc6 Qd7 Nh1 Rcc3 Ng1 Qb7 Rch6 Be3 Kb4 Nb3 c5 Be6 c6 Nc5 c7 Bc8 Bfc4 Nd6 Ne2 Na4 Ba2 Rf1 Rf3 Rc6 Nhg3 Bd4 Ra3 Rh1 B6c4 Bb2 Bcb3 Nc3 Rf6 Ncb5 Rf1 Be6 Rc8 Na7 f8Q Kh3 Qf3 Nf7 Qf2 Qb1 Bh6 Ba1 Bf8 Rd6 Kc5 Qb2 Rd8 Rd4 Rd6 Rh4 Rc6 Kg4 Qg1 R4h2 Qf2 Kh4 c8B Qc7 Bb7 Bc8 Ba6 Qb7
B1b5/B5PN/1KrqN1nR/QQ1r4/Q2R1n1p/prB1b2k/2RN1B2/4Q1b1 w - - 0 1 illegal: No possible last move
2nBrBR1/6B1/b3PNQB/n1B1q3/nN1qbr2/2qN3k/1bBR4/R1K1R3 w - - 0 1 illegal: No possible last move
3BB3/2Q2nbn/3r3N/Nq1RR2P/kp4b1/b2rQrRr/1RKR2R1/4RR2 w - - 0 1 legal: proof: e4 a5 b4 f5 exf5 h5 bxa5 d5 g4 d4 gxh5 d3 cxd3 Qd5 d4 Qd6 d5 Qd8 d4 Kd7 Kd2 b5 h4 e5 a4 g5 f4 c5 f6 e4 h6 c4 f7 g4 d6 Kc6 d7 g3 h5 c3+ Kc2 g2 a6 e3 a5 b4 f5 e2 f6 Kb5 a7 Qb6 d8Q Bb7 h7 Be7 f8R Bf3 d5 Bd6 a6 Qc6 f7 Nf6 Nd2 Qc8 Rh2 Qc6 Qe1 Bf4 d6 Ne8 d7 Nd6 Qc7 Qc5 d8R Nc6 Rfe8 Qg5 f8R Rg8 h8R Rc8 a8R Ne7 a7 Qd5 Nh3 g1R Ng5 Qc6 Nf7 Rh1 Nb3 Bh6 Na5 Bg4 Bg5 Ng6 Rg2 Bg7 Nh6 Nf7 Rd2 Rh3 Bd8 Qa6 Rad1 Ka4 Re5 Qb5 Qf2 e1R Qe3 Re2 Re1 Rf2 Rb8 Rf4 a8R Rff3 Rb6 Rb8 Rbd6 Rb6 R6d5 Rd6 Rh7 Rh8 Bd3 Rg8 Bf5 Rh8 Bd7 Rg8 Be8 Rh8 Kc1 c2 Kb2 c1B+ Kc2 Ba3 Ra7 Bf6 Rg7 Rh7 Rgg8 Bg7 Ra6 Ngh8 Rc6 Ng5 Rc3 Nhf7 Rb3 Rh8 Rb2 Nh7 Qe2 Rd3 Qe3 Nfg5 Rf3 Nf7 Rgg3 Bf8 Rgg5 Bg7 Rff1 Rf8 Rgg2 Nh8 Rg3 Rf3 Rgg2 Nf7 Rg6 Bd7 R6g3 Bg4
4Q1R1/1npNN1P1/b1K1r3/1QN2BBN/1ppk3r/b2r2nq/7R/RRB2B2 w - - 0 1 illegal: Other
N5qK/N2B3p/BQ2pp1N/Br2n3/P1Q1r2Q/B1R5/1r2RP2/kB2r1n1 w - - 0 1 legal: proof: e4 b5 g4 d5 exd5 a5 c4 a4 cxb5 a3 g5 Kd7 bxa3 Ke8 a4 Be6 a5 Bc8 h3 f6 h4 Be6 Qe2 Kd7 g6 Bf7 gxf7 g5 Qd1 g4 Ba3 Bh6 Bc1 Bg5 hxg5 Qf8 Rh3 Qc8 Rh1 Qd8 Ke2 Kd6 f8Q Kc5 a4 Kc4 d4 c5 g6 g3 Kf3+ Kb4 Kg4 c4 Kh5 g2 d6 c3 d7 c2 b6 Kb3 b7 Ra7 a6 Nh6 g7 Nf7 g8B Qc7 d8N Qh2+ Nh3 g1R d5 Qd6 Qe2 Qd7 d6 Rg2 Qh6 Qf5+ Ng5 Qd5 d7 Rg4 Nc3 Rg2 Ra2 Rg4 Nb5 Qf5 Ne6 Rf4 d8B Qe4 Rh3+ Qe3 Nec7 Rg4 Ba3 c1R Na8 Re4 Ba5 Nd7 b8Q Rc5 Qb6 Rb7 a7 Rf4 Qg4 Rbc7 Re2 Rfc4 Qh4 Nfe5 Nf7 Qd3 Qc1 Rb7 Kh6 Re4 Kg7 Nf3 Nh6+ Qc4 Be6 Ne5 Bd7 Re8 Qcf4 Qe6 Qfg4 Rc2 Rg3 Ka2 Rh3 Ng1 Rc3 Qb3 Qge6 Rc8 Qc4 Rc6 Kh8 Re6 Nac7 Ka1 a8B Rb2 Na7 Rd4 Qbb4 Rb5 Be4 Rd1 Na8 Re1 Qd6 Nd3 Bf5 Re4 Qb6 Ne5 Bg6 Rf4 Bb1 Re4 Bfh3 Qa2 Bc8 Qb3 Bhd7 e6 Ba6 Qd1 Rd2 Qg4 Re2 Qg8+
5nbB/B2R2r1/pQQR1pqk/PQb3RP/6B1/NQpp1K2/1Qb5/N7 w - - 0 1 legal: proof: f4 g5 fxg5 h5 c4 b5 cxb5 e5 g4 h4 d4 a6 dxe5 Bh6 Nh3 Bg7 Ng1 Bf8 h3 Nc6 Qb3 Nce7 Qa4 Nd5 Qd1 Rh5 gxh5 Ndf6 Qd6 Ng4 hxg4 Rb8 Qd4 Rb6 Qa4 Rh6 Qd1 Rh8 Kf2 d5 a4 c5 b4 d4 e4 h3 g6 h2 b6 c4 b7 Be6 b8Q Nh6 a5 Ng8 b5 Ne7 g7 Nc6 g8Q Rh7 b6 Rh8 b7 Ke7 g5 Bd5 e6 Qd7 e5 Bh6 g6 Bf4 g7 Bh6 Qe2 Bg5 Bb2 Bf6 Nf3 Bg5 Nfd2 Qc7 Na3 Bf6 Rd1 Qd7 Nb3 Qd6 Bh3 Bf3 Bg4 Rh6 Na1 Bg2 Rd3 Rh8 Rhd1 h1B Bc3 Bd5 Qb2 Bhe4 Qa7 Qc7 b8B Rh7 Qab6 Qd6 Ba7 Nb8 Ke2 Nd7 Qgb8 Bb7 g8R Bbd5 Rg5 Rg7 Q8b7 Kf8 e7+ Kg8 e8Q+ Kh7 e6 Kh6 e7 Nf8 Qeb5 Qg3 R3d2 Bc2 e8Q Be6 Q5b3 Be7 Qeb5 Bc5 Q7c6 Qd3+ Kf2 Qg6 Kf3 Be7 Bb4 c3 Bd6 Bc4 Be5 Bc5 Rd3 Rh7 Bh8 f6 Re1 Re7 Re6 Rg7 Rd6 Bf7 Re3 d3 Re7 Bc4 Red7 Bg8
1b1KNQ1b/1R2q3/3B1QN1/2pBpq1r/1QP4B/n1Q1n1nP/k1N4Q/1b1R4 w - - 0 1 legal: proof: f4 d5 g4 h5 gxh5 e5 e4 b5 exd5 a5 a4 Bf5 axb5 Bc8 f5 Rh6 Nh3 Raa6 Ng1 Rae6 fxe6 Rh8 Kf2 Ke7 Ke3 Kd6 Ke4 Kc5 Kf5 Kb4 d4 c5 c4 g5 d6 a4 d7 g4 d5 f6 h6 g3 e7 a3 Ke6 g2 e8N f5 b6 f4 d6 f3 b7 a2 h7 f2 Nh3 g1N Nf4 Nh6 Qd4 Kb3 Ng6 Nf3 Bg5 Nh4 Qc3+ Ka4 b4 Rg8 h8Q N6f5 b5 Ng2 b6 Bg7 Na3 Nge3 Bh4 Rf8 Rd1 a1B Nc2 Ng3 Bg2 f1Q Bd5 Nc6 b8Q Nb4 b7 Rf5 h3 Bf6 Qf8 Bh8 Qf6 Qc7 Ke7 Rh5 Rb1 Qf5 Rhd1 Bb2 Qf8 Bc1 Rb3 Bd2 Rb2 Qb6 d8Q Qa7 d7 Be1 Qb6 Bd2 d8Q Bd7 Ne1 Nbc2 Qbf6 Na3 Nc2 Be6 Rb6 Bg8 Rb3 Bh7 Qdb6 Be1 Kd8 Bd2 Qb8d6 Be1 b8B Qg7 Qd4 Ba5 Qc3 Qf7 Bc7 Qg7 Qb7 Bb6 Qb8 Ba7 Rb7 Qf7 Qb6 Q7e6 Bd6 Qf7 Q8c7 Bb8 Qbb2 Q7e6 Qcb6 Qf7 Nb4 Qg7 Qh2 Qf7 Qcd2 Kb3 Nc2+ Ka2 Qc3 Q7e6 Qbb4 Qf7 Be6 Qe7+ Kc8 Qf1 Nd4+ Ne2 Bd5 Bc7 Nf4 Bb1 Nc2 Ng3 Ng6 Qf4 Qe6 Bb8 Qef6 Qe6+ Kd8 Qff5 Qcd2 Qf7 Qdc3 Qe7+
1RN1n2b/P6n/p1R1b1Br/3Nn2p/Q4Rq1/3K4/NQ1P1NpQ/B2Nkr2 w - - 0 1 illegal: No proof kernel
1n1QRK1k/2Qr1B1p/2n3pp/5R1B/1R1nb3/N2NR1PP/1p1B4/4rbQR w - - 1 2 illegal: Other
2Q3b1/1nqBB1p1/3NQP1b/5B2/r3Q1R1/N1PrR3/R2N1kNr/K2brn2 w - - 0 1 legal: proof: e4 b5 g4 c5 d4 h5 gxh5 f5 dxc5 b4 exf5 b3 axb3 Rh7 b4 Rh6 b5 Rh8 Kd2 Kf7 Kc3 Kf6 h4 Ke5 f4+ Ke4 b4 e5 Kb2 a5 b6 d5 b7 d4 c6 d3 f6 d2 h6 Ke3 c3 a4 c7 e4 b5 Qd5 h5 Qd6 f7 Qc6 b6 Qf6 h7 Be7 f8Q Nd7 b8Q Bd8 h6 Nc5 b7 Be7 f5 Ra5 Qe8 Rb5+ Qb3 Ra5 Bh3 Be6 c8B Qh4 f6 Qe1 Bf5 Bf8 Ra2 a3+ Ka1 Ne7 Rh3+ Qg3 Bd7 Ra4 Qbc8 Nd5 b8R Bd6 Nf3 Kf2 Rb4 e3 Rg4 Bf7 Qe4 e2 Qb6 d1B Nfd2 Bc7 Qbe6 e1R Bb2 Qe5 Re3 Nb7 Bc1 Rd8 h8N Bg8 h7 Bb8 Bb2 Qc7 Ng6 Rh1 h8N Rh2 Nf7 Ba7 Rh3 Be3 Nd6 Bh6 Nh4 Ne3 Ng2 Nf1 Bc1 Qc6 Re3 Qc7 Rc2 a2 Ba3 Rd4 Bb4 Re8 Na3 Rd3 Kb2 a1R Bc5 Rb1+ Ka2 Rb6 Ka1 Rb4 Ra2 Ra4 Q6c4 Re5 Qe6 Qc6 Ne8 Qc7 Be7 Rb5 Nd6 Rb2 Nf3 Re2 Nd2 Re1
1bNK2RQ/Q1p3B1/1Nk1b2q/4QBrR/2PR1n1B/n1p2rN1/n4Q1P/3n4 w - - 0 1 illegal: Other
3r3q/7p/2KBnRB1/1rNR1NnN/3n1R2/1R3bpq/1nk1PNPQ/R1N5 w - - 0 1 illegal: Other
5bRN/nR5N/1QQp4/Q3Qr2/1K1Pn1bN/1BBnqr2/QQ1P4/1nr1k3 w - - 0 1 legal: proof: g4 f5 a4 b5 axb5 h5 gxh5 c6 e4 Bb7 exf5 Qb6 c3 Qd4 cxd4 Bc8 b4 Kf7 f4 Kf6 h4 e5 b6 g5 b5 a5 h6 c5 h5 d6 h7 g4 h6 a4 b7 a3 b6 e4 Nc3 a2 Qb3 g3 Nf3 e3 Nh4 e2 Bb2 c4 Rg1 g2 Nd5+ Kf7 f6 Ke6 f5+ Kf7 Bc3 Bg7 Rb1 a1Q Qa2 Na6 b8Q Nb4 b7 Ra3 Qc7+ Bd7 b8Q Bf8 Qa5 Nc6 Qbb2 Na7 Kf2 e1N Ke2 Nd3 Kd1 Be6 Kc2 Rb3 Be2 Bc8 Bd1 Bd7 Qb6 Bc8 Qaa5 Qa4 Qa2 Qe8 Qc6 Ra3 Rb6 Qe3 Rb7+ Ne7 Qab6 Nc5 Kb2 Ne4 Bb3 Rg8 h8Q Rg5 h7 Rh5 Rd1 g1R Kc2 Rh1 Rg1 Bd7 Rg8 Rc1+ Kb2 Bc8 Nf4 Bd7 Nh3 Nd5 Qg7+ Ke8 f7+ Ke7 f6+ Ke6 h8N Rf5 Ba5 Ndc3 Bb4 Nb1 Bc3 Be7 f8Q Bc8 Qfd8 Bf8 f7 Bd7 Qa4 Kd5 Ng5 Rf3 Qbb4 Nc8 Bd1 Na7 Qa4b3 Ra5 Qc8 Bg4 Nh7 Be7 Qb6 Rb5 Ba5 Rc3 f8Q Rc5 Qfe8 Bf8 Qea4 Rb5 Qa1 Rc5 Ka2 Rc2+ Qbb2 c3 Qa3 Kc4 Qcc6 Kd3 Kb3 Rcf5 Bb4 Rc1 Bc2+ Ke2 Qe5 Rg1 Q1a2 Kf1 Bd1 c2+ Bc3 c1N+ Kb4 Rh1 Qaa5 Nd3+ Kc4 Kf2 Ba4 Rc1 Bb3 Nf4 Kb4 Ke2 Qc2 Ke1 Qcb2 Nd3+
2qB2N1/3rPq1Q/k1N3B1/2Qbb2n/2N1b2R/4QnRP/1n4r1/1q1BNKQ1 w - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 e5 fxe5 d5 a4 d4 axb5 d3 cxd3 Be6 d4 Bh3 d5 Bc8 b4 Kd7 e4 f5 d4 a5 e6+ Kd6 e5+ Ke7 h6 c5 b6 g5 b5 f4 b7 g4 h7 c4 d6+ Ke8 b6 c3 d5 c2 d7+ Ke7 Na3 a4 Be2 g3 Kf1 f3 Nc4 f2 Nf3 a3 Bg5+ Nf6 Ne1 Na6 b8Q c1Q b7 a2 Qa7 Bg7 b8N Qc7 d8N Nb4 Nd7 Bb7 Qe3 Rg8 h8Q Nd3 Qh7 Nb2 d6+ Ke8 h3 Ra7 e7 Nh5 Rg1 Bd5 Nc6 Qc8 Qdc2 Qb1 Bd1 Rb7 Qcc1 Qf5 Qc5 Qf7 Q1e3 Ra7 Rc1 a1Q Rc3 Qb1 Rd3 Nf6 Rd4 Nh5 Rh4 Be4 Ndb6 Bf6 Nd5 Kd7 Rg2 Qce8 e6+ Kc8 d7+ Kb7 d8Q Ka6 Qb8 Qc8 e8B Be5 Bd8 Rd7 e7 Rg4 Nf6 Bd5 Rg1 g2+ Ke2 Rg5 Ng8 Rg3 Qbd6 Rg4 Qf6 f1B+ Kf2 Bd3 Qff4 Qe6 Qfd4 B3e4 Bg6 Rg5 Rh1 g1N Kf1 Nf3 Rg1 Qf7 Rg3 Bh8 Rg1 Rg2 Qdg7 Rd2 Rg3 Rg2 Qgd4 Be5 Qg1 Ng7 Qde3 Nh5
QQ3NB1/1Q1rr1Bn/1Q3KNn/P3N1R1/2b3b1/pn4Bq/Pk1rN3/R4b2 w - - 0 1 illegal: No possible last move
3b2nR/B2N3R/1b2K1b1/Br1NQ1N1/P5rR/bBR1q2b/pBQ1P3/6kn w - - 0 1 illegal: No proof kernel
N1R1b2B/p3N1KR/1b1nqR1r/nbN5/2nP2bk/2r4P/3NQ3/QR3BQ1 w - - 0 1 illegal: No proof kernel
R1Qbrr2/6NR/KRp5/3nqBb1/1n2N2B/k2PQ1bB/1qP2b1R/1B2N3 w - - 0 1 illegal: No proof kernel
5R2/R2Kb1Q1/n1Bpn3/Q1PP4/R1BNkq2/2nq3b/1BN4Q/RQr1bq2 w - - 0 1 legal: proof: e4 c5 a4 h5 g4 a5 gxh5 b5 b4 f5 bxc5 b4 exf5 Ra7 Bg2 Rb7 Bf1 Rb5 axb5 Bb7 Bg2 Ba6 Bf1 Bc8 Ke2 Kf7 Kf3 Kf6 Kg4 Ke5 c4 g5 f4+ Ke4 d4 e5 h4 b3 d5 a4 b6 a3 f6 d6+ f5 a2 h6 b2 f7 Nc6 b7 Nb8 h5 Qb6 c6 Qe3 c5 Qe2+ Nf3 Qf2 c7 Qd2 h7 Be6 c8B Ke3 h6 e4 Bc4 Na6 b8Q Nc7 Bd7 Be7 f8R Na6 Bc6 Bd7 Na3 b1Q Rh4 Qd3 Nd4 Be6 Qb1 Nf6+ Kg3 g4 Qa4 Rg8 h8R Ne8 f6 Ng7 h7 Bf5 f7 Ne6 Bb2 Qb4 Kg2 g3 Qa5 Rg4 Kh3 g2 Rhg8 Qa4 h8Q g1N+ Kh2 Qb4 Rg7 Ne2 Kh3 Rg1+ Rhg4 Re1 Qh4 Nc3 Nac2+ Kd2+ Qg3 e3 Qh2+ e2+ Ne3 Qe4 Nec2 Rc1 Kg3 Qb5 Rf4 Bh3 Rh7 Bg2 Kg4 e1B Rg7 Qf3+ Kf5 Qe3 Rb8 Qb4 f8Q Qe2 Rf7 Bh3+ Rg4 Qa4 Qg7 Qb4 Rff8 Qa4 Rb7 Qb4 Bb3 Kd3 Ra7 Qf3+ Kg6 Qf4 Bc4+ Ke4 Rh4 Qb5 Rg4 Bf6 Kf7 Be7+ Ke8 Qb3 Kd7 Qb5 Bb3 Qd3 Bc4 Bd2 Rg3 Qff1 Ne1 Na4 Ba3 Qc2 Rb3 Qcd3 Rb4 Nc3 Ra4 Bf4 Qbc2 Bg3 Rb1 Qf4 Qb2 a1Q Nec2 Rg1 Qa2 Bf2 Bb2 Rh1 Rg1 Qad1 Rf1 Q1e2 Rb1 Rc1 Ra1 Be1 Qb1 Qef1
2k5/2B1qN1n/1BbbR1P1/pNn5/Pq1N4/rQ2QBNb/n1RRb1K1/2B5 w - - 0 1 legal: proof: g4 b5 b4 c5 bxc5 e5 d4 a5 dxe5 f5 gxf5 g5 h3 g4 h4 Ra6 Bb2 Rg6 Bc1 Rg5 hxg5 Kf7 Nd2 Ke7 Nb1 Ke8 c4 h5 e4 d5 f4 Kd7 Kf2 g3+ Kg2 h4 a4 d4 f6 b4 f5 d3 g6 b3 c6+ Kc7 f7 b2 c5 d2 e6 Qd6 e7 Bd7 e8R Rh6 e5 Be6 f6 Qe7 Nc3 b1Q Qb3 d1B Be2 Nd7 Rh2 Bd5+ Ne4 Qa2 e6 Qb2 Nf3 Qc2 Nd4 Qd2 Ra2 Qd3 Rd2 Qb5 Bf3 Bg7 f8B Be2 f7 Bf6 Bg7 Qb4 f8B Bg5 Bh8 Bf4 Be5+ Qd6 e7 Ngf6 Bg7 Nh7 Rc2 Bg8 Bgf6 Be6 Bg5 Bd2 Be3 Bg4 Bf2 Bf4 Rd2 Nb8 Be3 Na6 Rc2 Bc8 Bg1 Kb8 c7+ Kb7 Bge3 Bg4 c8N h3+ Kh1 Bf5 Na7 g2+ Kg1 Qf6 Bc7 Bd6 Nab5 Qe5 Kf2 g1N Ng3+ Qe4 Rg2 h2 Rd2 h1B Rh2 Bc8 c6+ Ka8 Rc2 Rh3 Rd2 Nc5 Rc2 Bd1 Kf1 Qe6 Rhd2 Ne2 Bf2 Nc3 Be3 Bg2+ Kg1 Bf1 Kf2 Bfe2 Kg2 Qe4 Bb6 Rh1 c7 Kb7 Bf4 Bc4 Bb2 Bh3+ Kf2 Be5 c8N Bd5 Ba3 Be2 Ncd6+ Ka6 Nf7 Kb7 Bb2 Ra1 Bc1 Ra3 Kg1 Na2 Kh2 Bf6 Bfc7 Be5 Kh1 Bc6 Kh2 Bc8 Kg2 Bf4 Rg8 B8d7 e8Q Bd6 Qe7 Qh4 Qee3 Bc8 Re8 Bh3+ Kf2 Qg5 Re6 Qe7 Kg1 Kc8 Kh1 Bf5 Kg2 Bh3+
nn2Q1B1/qr2r3/R2RpP2/NnB1PQ2/1KQb1b2/5Bp1/RR1qB2N/6k1 w - - 0 1 legal: proof: g4 c5 d4 b5 dxc5 g5 a4 f5 axb5 Bb7 h3 Bf3 gxf5 g4 Nd2 g3 Nb1 Bg4 hxg4 Qc7 Nd2 Qb6 Nb1 Qd8 Kd2 Kf7 Kc3 Kf6 f4 h5 e4 d5 b4 a5 c6 a4 e5+ Kg7 g5 a3 f6+ Kg6 f7 Kf5 c7 Ke4 c8Q a2 b6 e6 f5 h4 g6 h3 f6 h2 g7 Qd7 b5 Be7 f8R Rh5 b7 Bd8 b6 d4+ Kb4 d3 c4 d2 c5 Ke3 c6 Kf2 c7 Ra5 Qc2 Qc6 Nf3 Qe8 Be2 d1N Nbd2 Ra6 Ba3 Ra7 Nc4 Ne7 g8B Qd7 Na5 Rh7 Qf5 Nc3 Rhd1 h1Q Rd6 Qd1 Nh2+ Kg1 Rf7 Nb5 Rg7 Qc1 Rg4 Ng6 Rf4 Be7 Rf2 Nf4 Qe8 Bf8 c8B Qe7 Bd7 Bg7 Bc6 Bh6 Bcf3 Qc7 Qc6 Re7 Qc4 Nd5+ Kb3 Qd8 Bc5 Bf4 Ka4 Ndc7 Kb4 Nd7 b8R Rb7 Ra8 Nb8 Ra6 Na8 Rb1 a1B Rb2 Qd7 Ra2 Rc7 b7 Bd4 Rb2 Qc6 Ra2 Qb6 Rb2 Qa7 Ra2 Nd7 b8Q Rb7 Qe8 Qd1 Bf1 Qd3 Rfb2 Nb8 B1e2 Qd2+
1rQB2BR/1KPRbp2/n1rpk3/NN1n4/R1N2P1B/5B2/4nrQ1/2Nn3q w - - 0 1 legal: proof: e4 b5 g4 c5 d4 h5 gxh5 b4 dxc5 d6 e5 Kd7 e6+ Kc6 a3 Bd7 axb4 Kc7 exd7 Kc6 Qe2 Kd5 Qd1+ Ke5 b5 Ke6 Kd2 a5 Kc3 g5 Kc4 g4 h4 g3 b4 g2 c6 a4 h6 a3 c7 a2 c8B Qa5 d8B+ Ke5 h5 e6 b6 Be7 b5 Bf6 b7 Be7 h7 Nh6 b6 Kf6 Be2 e5 Bf3 e4 Qd5 e3 Na3 e2 Bg5+ Kg7 Bf5 e1N Rh4 Nd7 b8Q Re8 h8N Ra6 b7 Ng8 h6+ Kf8 h7 Nh6 Ne2 g1N Nb5 Ra8 Qc8 Bf6 b8N Bb2 Nc1 Bc3 Nc6 Re2 Ng6+ Ke8 h8R+ Ng8 Rf4 Nc5 Nge5 Ned3 Bh7 Na6 Bh4 Rd2 Qe4 Ne2 Kd5 Qb6 Rg4 Qb7 Nc4+ Kf8 Qg6 Bf6 Rd4 Ke8 Qg2 Be7 Rb1 a1R c3 Qb8 N6a5 Nb2 Kc6 Nd1 Rb4 Kf8 Ra4 Rc2 Re4 Raa2 Re3 Qa7 Re6 Qe3 Kb7 Qh6 Re5 Qh5 Rc5 Qh6 Rc7 Rab2 Rd7 Ra2 Bg3 Qh1 Bh4 Rab2 Bg4 Kg7 f4 Nf6 Bg8 Nd5 Bf3+ Kf8 Na3 Ke8 c4 Rc3 c5 Rc4 c6 Rc3 c7 Rc6 Bg5 Kf8 N3c4 Kg7 Bh6+ Kf6 Bg7+ Ke6 Be5 Ng1 Bc3 Rf2 Bf6 Ne2 Bh4 Rb8+
N3Q2B/pp2N3/P2b1RrQ/r5B1/1n1nP2R/b1QBbR2/1P1Kp1k1/n5N1 w - - 0 2 legal: proof: e4 h5 c4 e5 g4 Ke7 gxh5 d5 cxd5 Nh6 d4 Qe8 d6+ Ke6 d5+ Kf6 f3 Bg4 d7 Be6 d6 Bd5 exd5 e4 Nh3 e3 Ng1 Qe4 fxe4 Ng8 d8R Kg5 a4 Kf4 h4 Kg3 h6 g5 h5 c5 a5 f5 a6 f4 d7 f3 d6 c4 h7 g4 h6 c3 Rh2 c2 Be2 Nf6 Qd3 Nc6 Na3 Nd4 Nc4 Nd5 Rh4 Kg2 Ra3 Be7 Bd2 c1B Nb6 f2+ Kd1 f1N Rf8 Rd8 Na8 Rg8 h8Q Rg6 h7 Rc8 d8Q Rc5 d7 Ra5 Rb3 Ba3 Qe8 Nb4 d8N g3 Nf3 Kf2 Rf6 g2 Nc6 g1B Ne7 Kg2 Qc4 Bf2 Ng1 Ndc2 Qg7 Nh2 h8B Nf3 Qh6 Na1 Qc2 Nd4 Bb5 Bg3 Rd3 Bc7 Qc3 e2+ Ke1 Bb8 Bg5 Bd6 Rdf3 Be3 Bd3 Bf2+ Kd2 Be3+
3rr2B/bb1N1q1b/B3RP2/P3R2R/NBr2Pn1/p7/QB1KNpk1/n1B5 w - - 0 1 illegal: No proof kernel
2r1Bq2/4bPPb/1BN3kP/3KQr2/4RQ1Q/1n2B1q1/QrR1nN2/3Qr1r1 w - - 0 1 illegal: No proof kernel
BRq3r1/N2NPp2/3N4/1Q1q1n2/K2Ppp2/1nNrP1B1/2Q2R2/1R1b1rNk w - - 0 1 illegal: Other
3Q4/1b2nB2/R3Pr1P/1R2B1r1/Qq2K1br/1Pq3rR/Nb2kB1N/2B1n2N w - - 0 1 illegal: No possible last move
N2br2K/qR3Bb1/2Nr4/1bQ5/rn4Q1/NnBPBPn1/kBRR1pP1/8 w - - 0 1 illegal: No proof kernel
Q5qk/QNn2P1q/3R1Rp1/PbQ1BP1p/rb1R1r2/3N4/6K1/nBR3Bn w - - 0 1 illegal: No proof kernel
bR6/2r2N2/nR1Nbp1b/1K1BPP1B/1q1k2B1/p2N1p1Q/3BP1q1/1rQQ4 w - - 0 1 illegal: Other
RN2r1Q1/1b1B3R/2N1r2B/1N1Pr2k/5n1P/Kp1nN3/P2qN1rB/2B1r1b1 w - - 0 1 legal: proof: e4 a5 b4 f5 exf5 h5 bxa5 d5 g4 d4 gxh5 d3 cxd3 Qd5 d4 Qd6 d5 Qd8 d4 Kf7 Kd2 g5 Kc3 c5 Kb3 b5 f4 e5 a6 b4 h6 e4 h7 g4 a7 e3 d6 e2 d7 e1R f6 Kg6 d5 g3 f7 g2 f5+ Kg7 f6+ Kg6 Nd2 Qb6 d8N Re8 Rb1 Kg5 Ne2 g1R Bh3 Ne7 Nf1+ Kh5 Ne3 Rgg8 Qg1 Nd7 Nc6 Ne5 Bd7 Nd3 h3 Rb8 a8N Ng6 Nc7 Re6 Nb5 c4+ Ka4 Be7 f8N c3 f7 c2 Rb3 Bh4 Ra3 Ngf4 Kb3 Re5 Ra8 Bb7 Ka4 b3 Ka3 Rg3 Qg2 Rhg8 h8B Qd4 Qg1 Re6 Be5 R3g5 Qg3 Rbe8 Qg1 Ng2 Bh2 Ngf4 Qg2 Rge5 Qg3 Rh8 Qg8 Bg5 h4 Bd8 Rg1 Bb6 Rg7 Rhh6 Rh7 Rg6 Bh3 Rg2 Nd7 Qc3 f8B Qd2 Ndb8 Ba7 Rd7 Rhe6 Bh6 Bb6 Rh7 Bd4 Bb2 c1R Bf5 Re1 Bc1 R6e7 Bd7 R7e6 Nc4 Bf2 Ne3 Bg1
B1Q1RN1B/2R1bP1r/1rnp2N1/K3B1k1/2Nqnpq1/B1B1PP2/1p3r2/3N4 w - - 0 1 illegal: No proof kernel
n3bK2/P1B3pp/Rbr5/3p2P1/2kPRBB1/3NQr1q/rp1BB1nN/1N4N1 w - - 0 1 illegal: No proof kernel
Nn1b1Krn/kq2BN1P/3RQp2/2p5/2Ppp3/1B2P1RN/1B3B2/1Rr1N1n1 w - - 1 2 legal: proof: f4 b5 g4 h5 gxh5 g5 fxg5 c5 a4 Rh7 axb5 Ba6 d4 Bb7 d5 Bc6 dxc6 Rh8 Kf2 e5 Ke3 a5 Ke4 d5+ Kf5 f6 Ke6 d4 b4 e4 h4 a4 h6 a3 b6 a2 h5 Bd6 h7 Be7 b7 Nd7 b8B Qc8 e3 Kd8 Kf7 Ra6 h6 Rb6 b5 Qa6 c7+ Kc8 g6 Kb7 c8N Qa3 g7 Nf8 Nd2 Qb3+ Bc4 Qc3 Bg3 Qb4 Bb3 Ra6 c4 Ra5 b6 Ra3 Ndf3 Ra5 Nh3 Ka6 b7 Qc3 b8B Qd3 Bf2 Bd8 Bb2 Qb1 Nb6 Kb7 Na8 Ne7 g8R Nd7 Rg3 Rg8 h8N Ng6 Bd6 Ka7 h7 Nb8 Be7 Ra4 Ne1 Ra3 Bc2 Rc3 Bb3 Rc2 Qg4 Rc1 Bc3 Qb2 Qe6 Qb1 Rhg1 Qb2 Rb1 a1N Rg5 Nc2 Rd5 Nc6 Rg3 Nb8 Ng2 Ne1 Rd6 Nf3 Ne1 Qa1 Bb2 Ng1 Rf3 Qa6 Rg3 Nf8 Ke8 Qb7 Nf7 Ng6+ Bf8 Rg7 Be7 Nh8 Kf8 Rg8+
1B1BQ3/1Br1b1QK/bp1Q1pBP/3q4/1P1N3R/nrkPQ1p1/p1Nq4/R7 w - - 0 1 legal: proof: f4 d5 a4 h5 c4 e5 fxe5 h4 cxd5 h3 a5 b6 a6 Nd7 gxh3 Rh6 h4 Nc5 h5 Nb7 axb7 Rh8 Kf2 Kd7 Ke3 g5 Ke4 c5 Kf5 a5 b8Q f6 Kg6 a4 b4 g4 h4 c4 e4 a3 e6+ Ke7 d6+ Ke8 h6 c3 e7 Kd7 e8B+ Ke6 d3 Ke5 h7 Kd4 d7 a2 e5 g3 h5 c2 h6 Bd6 e6 Bc5 e7 Ba6 Na3 Bd6 Qd2 Bc4 Bg2 Ra7 Qe3+ Kc3 Nf3 Rc7 Nd4 Ba6 Rh4 Bc5 Bf7 Bd6 e8Q Ne7+ Kg7 Nd5 Bg6 Be7 Bf3 Rf8 h8Q Rf7+ Kg8 Rc4 Qd6 Nc7 Bc6 Nb5 Qg7 Qa8 Bce4 Qd5 d8B Rc6 Kh7 Rc7 Qf2 Ra7 Bg5 c1Q Qe3 Qd2 Nac2 Na3 Bh1 Bf8 Bf4 Rfc7 Be5 Be7 Bf4 Qf7 Ba8 Qd5 Bb7 Rc5 Qde5 Ra5 Qc7+ Nc4 Bc8 Ra3 Qce5 Rd7 Bb7 Rb3 Qe6 Na3 Bb8 Rc7 Q6e5 Qc1 Qd6 Qd2
6b1/1B6/PNnQ1bRP/kr2R1R1/p3NqKP/3n1Q2/bB1Pn1Q1/4qr1B w - - 0 1 illegal: No proof kernel
2N1Nb2/3knpr1/2b1q3/p2r2pB/nBB2QQP/1R2RPP1/Q3P2R/1K5b w - - 0 1 legal: proof: b4 b5 d4 e5 dxe5 h5 a4 c5 bxc5 h4 axb5 h3 Qd3 Qc7 Qxh3 Qb6 Qh7 Qd8 Kd2 g5 c4 d5 Kc2 a5 h4 d4 e6 Ba6 b6 Qe7 g3 Qd6 e7 Qf6 f3 Bb7 c6 Ra7 c5 Bg7 c7 Ra8 c8B Qd6 c6 Nh6 c7 Rg8 Rh2 Ra6 Ba3 Qe5 Nd2 d3+ Kb1 Qe3 Be6 Bc8 b7 Ra8 Nc4 d2 Nb6 d1B Bb4 Bb3 Qc2 Qc3 Ra3 Bc4 Bfh3 Qf6 Rb3 Bd7 Qa2 Bf8 Nc8 Bc6 Bhg4 Nd7 b8Q Nc5 Nh3 Rg7 Nf2 Ng8 Bh5 Na4 Ng4 Ra7 Bd5 Kd7 e8R Qf5+ Re4 Qe6 Ree3 B4b5 Bc4 Ne7 Nh6 Ba6 Nf5 Rb7 Nfd6 Rb5 Ne8 Re5 Qa7 Rd5 Qd4 Bab7 Ba6 Bb5 Qg4 B7c6 Qf4 Bd3+ Kc1 Bf5 Bc4 Bh3 Kb1 Bg2 Ncd6 Qf6 Nb7 Qe5 Nbd6 Ke6 c8Q+ Bd7 Qc7 Bh1 Nc8 Bb5 Qd4 Bc6 Qb8 Kd7 Qg4+ Qe6 Qe5 Ba8 Qef4 Bc6
3b2rn/1pkbrNq1/Q1BR1Pb1/b1Bqp3/B3QQ2/1P2P2P/R4R2/3K2nN w - - 0 1 illegal: No proof kernel
N3K2R/2q4r/nP1QP2k/q1pr1R1r/1p6/BNn1PR1R/2R1P3/2nBN3 w - - 0 1 legal: proof: c4 e5 g4 h5 gxh5 a5 b4 e4 bxa5 e3 dxe3 Ke7 c5 Ke8 Kd2 b5 a6 Bd6 Nc3 Be5 Nb1 Bc3+ Kc2 Ba5 f3 Bb6 cxb6 Qf6 Kd2 Bb7 Ke1 Be4 fxe4 Qd8 Kf2 Kf8 Kg3 f5 Kf4 g5+ Ke5 Kg7 h4 d5 Ke6 c5 a4 b4 a5 f4 a7 f3 h6+ Kg6 h7 g4 a6 g3 e5 g2 h5+ Kg5 Kf7 f2 h6 d4 e6 d3 Rh3 d2 Rf3 Qc8 Ba3 Qc6 Ra2 Nd7 Rc2 Rd8 a8R Nb8 a7 Rd7+ Ke8 Na6 Rd8 Kg6 a8N Qc7 Rf5 Rf7 Nf3 g1Q Bh3 f1N Ne1 Rg7 Rdd5 Ne7+ Rf8 Rf7 Rf5 Nd5 Bg2 Rd7 Be4 Nc3 Bd5 Qg2 Bb3 Qgc6 Ba4 Qb5 Bb3 Qa5 Rf3 Rg8 h8R Rh7 Ba4 Rgg7 R8f5 Rd7 Bb3 Rd5 Ba4 Rf7 h7 Kh6 Rf8 Rfd7 h8R+ Rh7 Rg3 Re5 Rff3 Rh5 R8f5 Nd5 Rh3 Nc3 Qc1 d1R Qd2 Qb5+ Qd7 Qa5 Qd6 Rd5 Bb3 Nd2 Ba4 Nb3 Nd2 Nc1 Nb3 Rd2 Ra2 Nb8 Na1 Kg7 Bd1 Rd5 Rc2 Na6 Nb3 Kh6
4B2B/n2QqPn1/rPbpn1R1/6N1/1BQ1q1RK/2b1kP2/NrP5/RR5q w - - 0 1 legal: proof: e4 b5 g4 c5 d4 h5 gxh5 f5 dxc5 b4 exf5 b3 axb3 Rh7 b4 Rh6 b5 Rh8 b4 Kf7 h4 Kf6 h6 Ke5 c6 Ke4 c7 a5 f6 e5 h7 g5 h5 g4 f7 a4 b6 d6 h6 g3 b5 a3 b7 g2 Nh3 g1N Bd2 a2 Bb4 Bd7 c8Q Ne2 f3+ Ke3 Ng5 e4 Nc3 Bg7 Qd5 Nc6 b8R Ra6 Qc4 Nf4 Rg1 Nge7 Rg4 Na7 b6 Bc6 Qd7 Ne6 Be2 Rg8 h8B Nf5 h7 Qe7 Rb1 a1Q Ra8 Rf8 Na2 Bc3+ Kf1 Rg8 Kg2 Nfg7 Kg3 Rc8 Kh4 Rc7 Rd8 Rc8 Rg8 Ra8 Nc1 Ra2 Bf1 Rb2 Na2 Kd2 Bd3 e3 Bf5 e2 Bd3 Nh5 Rg6 Ke3 Bf5 Nhg7 Be4 Ba4 Bc6 Bb5 Qc8 Ba4 Be8 Bc6 Qd7 e1Q+ Rg3 Qe2 Rg4 Nh5 Bg7 Qd3 h8R Qf5 Rhh6 Qe4 Bh8 Nhg7 Kg3 Nb5 Rhh1 Ra6 Kh4 Na7 Nc1 Qa5 Na2 Qad5 Rhc1 Qd1 Ra1 Qg1 Rcb1 Qh1+
n4nq1/1P1Bp1rp/P2B4/Rn5P/NB1Q1r1Q/1kN2r2/1PN2pb1/1NRK4 w - - 0 1 illegal: No proof kernel
1B5k/Kr5B/4pqp1/1b1NpN1R/P2b1Q2/PP1NP3/BRb1Q1p1/1nN2r2 w - - 0 1 illegal: Other
1Bk2K1Q/2n1bNpp/1n1B4/1p2r1P1/BPp3NB/3pQR1R/3P1b1P/3nN2q w - - 2 4 legal: proof: c4 b5 e4 f5 exf5 a6 a4 Nh6 a5 Bb7 c5 Ng8 c6 Ra7 cxb7 Nc6 b8B Ne5 Qf3 Rb7 Qd1 Rb6 axb6 a5 b7 Nc4 Be2 Nb6 Bc4 Nh6 Bf1 Ng8 Ke2 c5 Kf3 d5 Kg4 Kd7 f4 e5 b4 c4 f6 d4 Kf5 e4 g4 a4 f7 a3 Nh3 e3 Qf3 a2 Bd3 e2 Bd6 e1B b8B Qc7 Qe3 Nc8 Bb2 Qb6 Na3 Qc7 Ng5 Bf2 Nc2 Na7 Ne1 Qc8 Rf1 Nf6 Bc2 Nd5 Ba4 Bh4 Rf3 Be7 f8Q Bf2 Nf7 Qd8 g5 Kc8 Ke6 Bg3 f5 Nc6 f6 Bf2 Rh3 d3 Bbe5 Nb6 Bg3 Rg8 Rb1 a1N Bh4 Nc2 Ra1 Na8 Rc1 Na7 Ra1 Kb7 Rd1 Qa5 Kd7 Rh8 Ke8 Nc8 Rc1 Ncb6 Qg8 Bd8 Kf8 Kc8 Nf3 Na3 Ke8 Bg3 Bb3 Nd7 Nh6 Be1 f7 Qa4 f8N Nb1 Ng4 Nc3 Ne6 Qa1 Ba4 Ndb6 Rd1 Bf6 Nd8 Nc7+ Kf7 Bg3 Rf1 Qc1 Rf2 Qh1 Ne1 Nd1 Rf3 Bf2 Qf8 Bb2 Qfe8 Rf8+ Ke7 Rf5 Qh8 Bf6+ Kf8 Re5 Nf7 Be7+
Q3r1Q1/R2bkPBB/KN3q1p/p1nRb3/5Nb1/P1r1RP1P/P1Bn4/bb6 w - - 0 1 illegal: No proof kernel
1n1krq2/PQ3R2/KN3P1q/3B3P/b2Pp3/bQ1NP2r/P3q1Q1/1Rb1n1B1 w - - 0 1 legal: proof: c4 a5 b4 d5 cxd5 f5 bxa5 h5 g4 h4 Qc2 h3 Qd3 Rh5 gxf5 Na6 Qxh3 Rh8 Qh7 Nb8 d4 g5 Kd2 c5 Kc3 b5 h4 e5 f4 g4 f6 c4 a6 g3 f7+ Ke7 Kb4 g2 a7 c3 d6+ Kd7 h5 c2 f5 e4 Na3 Qe7 Ka5 b4 Rb1 b3 Nc4 b2 Nh3 g1Q Nf2 Qh2 Nd3 Kd8 d7 Nf6 Be3 c1B Nb6 Ng4 Bg1 Nf2 e3 Rg8 Qg6 Qf6 Qg2 Qh6 f6 Ba3 f8Q+ Kc7 Qb4 Kd8 Be2 Rg3 Qb3 Rh3 Bg4 Bb7 Be6 Bc6 Bd5 Qd6 Rh2 Qdf8 Rh1 Ba4 Rh2 Rg3 Rh4 Rh3 Rg4 Bc5 Rg7 Ba3 Nc5 Nd3 Rf7 Nc6+ Ka6 Ne1 Ra1 b1Q Nd3 Qc2 Rb1 Qd2 Qf2 Kc7 Qe2 Re8 Qg2 Na5 Be6 Qe2 d8Q+ Kc6 Qc8+ Kd6 Qb7 Nc6 Bd5 Nb8+ Ka5 Bd7 Qa6 Kc7 Qb7+ Kd8 Nb2 Ba4 Nd3 Nd7 Ka6 Nb8+
r1k1NR2/5P2/q1b3P1/r1P5/N2P1RpB/3p1p2/2BPqPqN/n4NQK w - - 0 1 legal: proof: b4 c5 g3 g5 e3 f5 Qf3 d5 Qd1 f4 bxc5 b5 a4 d4 axb5 f3 Bg2 d3 Bf1 Qd4 exd4 Bh6 Nh3 Na6 Ng1 Nb4 h3 g4 h4 Bg5 hxg5 Nd5 Ne2 Be6 Ng1 Nf4 gxf4 Bc8 c4 Kd7 b6 a5 g6 e5 f5 h5 b7 h4 b8N+ Kd8 f6 a4 f7 e4 c6 a3 c7+ Ke7 Be2 a2 Kf1 e3 Nc3 h3 Ne4 h2 Nd7 Rh4 Ba3+ Ke6 Ndf6 Rh6 Ne8 Kd7 Ng3 Ba6 c8N Rh8 Nb6+ Kd8 Na4 Rh4 Be7+ Kc8 c5 Rh8 Bh4 Bb5 Qb1 Ne7 Bd1 Bc6 Bc2 Nd5 N1e2 Nb4 Qc1 Na6 Rb1 a1Q Rb6 Nb4 Qd1 Bb5 Rf6 Ra5 Rf4 Rg8 Ke1 Rf8 Nf1 Bc6 Neg3 Rh8 Rg1 h1Q Nh2 Rf8 Ngf1 Rg8 Rg3 Qg2 Rh3 Qa2 Bd8 Qc4 Rh8 Qa6 Be7 Na2 Qa1 Nc1 Bh4 Nb3 Qc1 Na1 Qd1 Rg7 Rf8 Rg8 Ng3 Qa7 Nd6+ Kd7 Rc8 Re8 Ra8 Re7 Rf8 Qa6 Ne8 Kc8 Ne4 Qg3 Kf1 Ra7 Qc1 Qh3+ Kg1 e2 Kh1 Ra8 Qg1 e1Q Ng3 Qe2 Nf1 Qg2+
3qk1Nr/Q3p1B1/qQR3n1/PP1B4/bb3p2/N2qPRK1/1R3r2/r2Qb2B w k - 0 1 illegal: No possible last move, all moves rejected
4B2B/N2q1pr1/q2R1B1n/B2q3k/p2Q1P2/2pr4/1b3pRq/RQ2Kn1b w Q - 0 1 legal: proof: e4 d5 h4 b5 a4 g5 axb5 gxh4 c4 dxc4 Rh2 Bf5 Rh3 Bxe4 Rh2 Bd3 Rh1 Be2 f4 e5 g4 c5 d4 h5 b4 a5 d5 c3 g5 c4 b6 h3 b5 c2 b7 h4 b6 e4 g6 h2 g7 a4 d6 h3 d7+ Ke7 Nd2 Kf6 Ndf3 Kg6 Nh4+ Kh5 Ng6 e3 Nh4 Rh7 Ba3 c1Q Bb4 Bf3 Ba5 Na6 b8B Nc5 b7 Nh6 g8R Ne4 Nf5 Nd2 Nd6 Rg7 Nb5 Ba3 Na7 Bb2 Be5 c3 b8Q Qc8 d8B Qa6 Bg2 Nf1 Bdf6 Qc2 Qd4 Qf5 Qb5 Rd8 Qbd3 Bb7 Qb1 Qd7 Bc6 Ba8 Nf3 Bb7 Nd2 Ba8 Rg1 h1Q Ne4 h2 Nf2 Qhd5 Rg2 h1Q Re8 Qh2 Re6 Rb8 Rd6 Rb4 Qde4 Rd4 Bb5 Rd3 Qd4 Qe7 Be8 Qd7 Rg4 Qb3 Rg1 Bh1 Rg4 Qd5 Rg2 Rg4 Bh8 Rg7 Bf6 exf2+
bB1N4/bpB2n2/3b1k2/1bPqNB1r/5Rn1/2Pb2P1/q1P2rr1/Q2NK2R w K - 0 1 illegal: Other
krqbQ3/4b1bb/1R3r2/p2Q1qp1/2p1BP2/Q1N1b1K1/1n6/1q1N2nN b - - 0 1 legal: proof: b4 d5 a4 b5 c4 dxc4 e4 bxa4 g4 h5 e5 hxg4 e6 fxe6 b5 e5 Ra3 e4 Rh3 Rxh3 Bb2 a3 Bd4 Rh8 Qc2 Qxd4 Qd1 Qd8 f4 Kd7 Kf2 c5 d4 Kc7 h4 Kb7 b6 g5 d5 e5 d6 a5 d7 e3+ Kg3 e4 h5 c3 h6 c4 h7 e2 Qd5+ Nc6 Rh6 e1Q+ Kg2 e3 Nd2 a2 Nb3 a1B Rd6 e2 Nh3 c2 Qe4 c1B Rd5 g3 Nd4 Ra6 Nc2 Be7 Nd4 Nf6 Rd6 Be3 Ng1 Ka8 Nb5 Nd5 Nc3 Qb1 Nd1 e1Q Nh3 Bg7 Qf3 Ndb4 Nhf2 Qf5 Nh1 Nd3 Rf6 Qf8 d8Q Nb2 Qdd5 Be6 Rh6 Qc8 Bd3 Bg8 Be4 Bd8 Rf6 Bc5 Qb3 Bce7 Qa3 Qb4 Kf3 g2 Kg3 g1B Re6 Be3 b7+ Kb8 Rf6 Ne5 Rb6 Ka7 b8N Nf3 Nd7 Ng1 Nc5 Qb3 Rc6 Ka8 Na4 Qa2 Nac3 Qb1 Rc7+ Rc6 Rb7 Rf6 Qd3 Be6 Qd5 Rhf8 h8Q Bg8 Qh5 Bh7 Qe8 Rb6 Qg6 Rff6 Qe8 Rb5 Rc7+ Rb7 Rc6 Rb8 Rb6+
1Q1Q1bnK/1p1q1p2/1RR3BQ/1qn4B/4r3/b1B1r3/1nnrN1n1/3k1b1N b - - 0 1 legal: proof: d4 e5 b4 a5 d5 axb4 d6 cxd6 Nf3 d5 Ng1 d4 h4 g5 f4 exf4 a3 bxa3 Qd3 gxh4 Qd2 Na6 Qd1 Nb8 Kf2 Ke7 Kf3 Kd6 Ke4 Kc5 Kf5 Kc4 g4 d5+ Ke5 h5 e4+ d3 c3 h3 g5 d4 g6 a2 g7 h4 Qf3 Kb3 c4 Kc2 c5 d2 c6 d1N c7 d3 Bg2 d2 Qf2 h2 Nh3 f3 Qb6 f2 Qe6 f1N Nf2 h3 Qd5 Ra3 Bb2 Rh4 Bf3 Nde3 Nc3 d1N Qc6 Ng2 Qh6 Qd7 Rb1 a1B Ne2 Na6 Bh5 Nfe3 Bc3 Nc5 Rb6 Bb2 Rg1 Rb3 Nh1 Ba3 Re1 Nb2 Rc1+ Kd3 Bg6 Nc2 Bh5 Qb5 Bg6 Be6 c8B Bc4 Bg4 Qd7 B4h5 Qb5 Nhg3 h1R Kf5 h2 e5 Qd7+ e6 Rd1 Nh1 Re4 Kg5 Qb5 e7 Rd2 e8Q Ke3 Qb8 Bd3 Nf2 h1Q Qd8 Qh3 Nh1 Qhd7 Qb8 Nf6 g8Q Bc4 Qgh8 Ng8 Qf6 Bd3 Qfd8 Bc4 Rf1 Kd3 Rff6 Ke3 Rfc6 Bd3 Nhg3 Kf2 Nh1+ Ke1 Nf4 Bf1 Ne2 Ne7 Kf6 Kd1 Bd4 Rbe3 Bc3 Nf5 Qhf4 Nh6 Qfd6 Be7+ Kg7 Bf8+ Kh8 Ng8 Qh2 Qc8 Qhf4 Qd7 Qh6
3qb3/R2QB3/1kn1rNnq/1p1K2N1/1Q1nr2b/1N1p1b2/1Q1pRp2/6Q1 b - - 0 1 legal: proof: b4 c5 a4 a5 d4 cxd4 f4 axb4 g4 e5 a5 exf4 a6 h5 gxh5 Rxa6 Bg2 b3 Be4 Ra8 Bh7 Nh6 Bg8 Nxg8 Kf2 g5 Kf3 f5 e4 b5 c4 d5 h4 Kd7 c5 Kc6 e5 b2 h6 g4+ Kg2 f3+ Kf2 d3 Ke3 d2 Kd4 f4 h5 g3 h7 g2 e6 f2 e7 f1B e8N Ra4+ Ke5 d4 h6 Ne7 Nf6 Be2 Rh2 Bd7 Nf3 g1N Ng5 Bf3 Re2 Be8 Qb3 Rb4 Ra7 Ng6+ Ke6 Rg8 h8Q Be7 h7 Rg7 Qg8 d3 h8Q Rc4 Na3 b1Q Qb4 Rd4 Bb2 Re4+ Be5 Qa1 Nc2 Qa6 Na1 Rh7 Nb3 Rh6 Ra8 Kb7+ c6+ Kb6 c7 Nc6 c8Q Qa4 Rf2 Qa6 Ra7 Ne2 Qd7 Ned4+ Kd5 Qac8 Re2 Qa6 Nh5 Bf6 Bd6 Be7 Ne6 Bh4 Be7 Nf8 Nc7 Rhe6 Qg1 Ng6 Qe5 Bg2 Nf6 f3 Nc1 f2 Nb3 Nc2 Qb2 N2d4 Nh7 Bf3 Ng5 Qa1 Qg4 Qh1 Qg1 Bf7 Ne8 Qh3 Nf6 Be8 Qga1 Qh2 Qg1 Qf4 Nf7 Qh6 Ng5
1qn1R1bK/1qb1QQ2/1n6/rBB5/NRq1kp2/3r1qqQ/2Bb3Q/r6n b - - 0 1 illegal: No possible last move
nNrkrnr1/1K1Bp3/2Q2R2/NpP1bbb1/4q3/Q3QqR1/2rp4/N5q1 b - - 0 1 legal: proof: d4 a5 g4 c5 e4 cxd4 f4 f5 b4 axb4 g5 fxe4 f5 h6 f6 gxf6 g6 f5 Bg5 hxg5 Bg2 f4 Bh3 Rh6 Bf1 Rh8 Kf2 b5 c4 d5 h4 g4 a4 e3+ Kg2 g3 Kf3 e2 c5 e1B a5 d3 h5 b3 g7 g2 a6 b2 a7 d4 Ke4 f3 h6 f2 h7 Bd2 Ne2 g1R Ra6 Nf6+ Ke5 Nd5 g8N Nc7 Na3 b1R Nc4 Rc1 Qa4 Rc2 Bh3 f1Q Nc1 Nd7+ Ke4 Rg2 Nb3 Qg1 Nca5 Bg7 Na1 Be5 Qa3 Rg7 Bg4 Bg5 Rh3 Rb8 a8Q Rg6 Qd5 Na8 Re3 Qb6 Qd6 Kd8 Nf6 Re8 Kd5 Rgg8 Rg3 Qb7+ Rc6 d2 Qe3 d1Q h8Q d3 Qe6 Nf8 Nd7 Bc7 Qb2 d2 Qba3 Qf3+ Q6e4 Qb6 Rf6 Be5 Bh3 Rb7 Bg4 Rc7 Nb8 Bd7 Be6 Rc8 Bg4 Bf5 Bh3 Bg6 Bd7 Bh7 Rf4 Qg6 Rf6 Nc7+ Kc6 Na8+ Kb7 Qgf5 Qc6 Q5e4 Ka7 Bf5 Kb7
3kqqbn/R2Q1q1B/1rP4P/bq2p3/Q1b1Npq1/2r4Q/2B1n3/K5Rq b - - 0 1 legal: proof: f4 a5 g4 c5 b4 axb4 d4 cxd4 g5 e5 g6 hxg6 Bd2 g5 Bc1 g4 e4 f6 f5 Rh7 Bf4 Rh8 Nd2 Ne7 Ndf3 exf4 e5 Ng8 e6 Rh3 Ne5 fxe5 Ba6 Rh4 Bf1 Rh8 Kd2 d5 Kc1 b5 Kb2 g5 h4 g3 c4 d3 a4 d4 e7 d2 c5 b3 f6 b4 a5 d3 a6 g2 a7 g4 h5 g3 h6 Nc6 Rh4 Be6 Qc2 d1B Rh5 d2 Nf3 g1Q Qc4 g2 Rg5 Rb8 a8B Rb6 Ra3 Be2 Rg3 d1Q Nd4 Qh1 Re3 g1Q Bh3 Qg6 Bf5 Qf7 Nb5 Nd4 Qc1 B2c4 Ra1 Ne2 Kb1 b2 Ra2 Kd7 Rc3 Qde8 Nd6 Qdg1 Qf1 Qg4 Rc1 Kc7 Bae4 Rh7 Kc2 b1Q+ Kd2 b3 c6 b2 Qh3 Rg7 Rg1 Qa1 Bd3 b1Q Bc2 Qb5 Bh7 Rg5 Ra4 Qa3 Ne4 Kc8 Ra7 Rh5 Qb3 Rh3 Qa4 Rc3 Kd1 Bed5 Kd2 Qd8 e8Q Ne7 Kd1 Ng6 Kd2 Nh8 Qd7+ Kb8 Kd1 Qde8 Kd2 Bb4 Kd1 Qff8 f7 Ba5 Kd2 Qfg7 f8Q Bg8 Qff5 Qaf8 Qh5 Qgf7 Qh3 Ng3 Qd5 Kc8 Kc1 Be2 Qe6+ Kd8 Qf5 Bc4 Qe6 Bb4 Kb1 Ba5+ Ka1 Ne2 Qd7+
b2B1K2/rNqk1Q2/RB1r1b2/B3QPP1/1pp1n3/n5p1/1b2nrpN/2n5 b - - 0 1 illegal: No proof kernel
Rk3Br1/R2R2p1/Pnn2pb1/1NR5/r2n1r2/q2r1QnP/N1qn4/6K1 b - - 0 1 illegal: No possible last move, all moves rejected
bnQ3nr/pR5b/2Q5/5P1B/bBP2bRb/R1B1qn1k/1K1b4/1br3n1 b - - 0 1 legal: proof: d4 b5 g4 g5 f4 f5 e4 fxe4 a4 bxa4 f5 c5 Nh3 cxd4 Nd2 h6 Nf4 gxf4 Nf3 h5 g5 Kf7 Ne5+ Ke8 Ng4 hxg4 Kd2 Kf7 h4 d5 b4 e5 c3 g3 Kc2 g2 h5 g1N b5 f3 g6+ Kf6 g7 a3 h6 d3+ Kb3 e3 h7 Kg5 b6 Kg4 b7 d4 Ka2 e2 Kb3 e1B Bf4 e4 Bh6 e3 Rb1 a2 Qe2 a1B Rh5 d2 Ka2 d1B Qa6 d3 Rb3 f2 Qf6 d2 Rh2 e2 Rb5 Be6+ Rb3 Bb4 Be3 Qb6 Qh6 Bc2 Bc5 d1B Bg2 f1B Bf2 Qe3 Rh3 Be7 Qf6 Bd2 Be1 Bf7 Qc6 Bh4 Bd5 Bg6 Bf7 Bg2 c4 Be5 Rb4 Bf4 Kb2 Bb1 Rb5 Ba4 Rb6 Qe6 Ra3 Qe3 Rb5 Kh3 Rbb3 Ba5 Bb4 e1N Be8 Nef3 Bf7 Nd7 b8Q Bh1 Qbb7 Rd8 Qbc8 Nb8 Be8 Rd1 Bf7 Ne7 g8R Rc1 Rg7 Ng8 Be8 Bf7 Rg4 Be6 Bh5 Bf7 Bd6 Bg6 Rb5 Bd2 Bb4 Nd4 Qb6 Bb7 Qbc6 Ba8 Rb7 Ndf3 Qa6 Ne7 Qd6 Rd8 h8B Bh7 Bd4 Rh8 Qdc6 Ng8 Bdc3
n2nbK2/Rrbr1n2/n2N3k/p5N1/1NNq3N/1p3b1r/1b2RQBb/1R2B3 b - - 0 1 illegal: No proof kernel
4Bb1Q/1B1nrbb1/nnQ1Br2/4N1rr/qb1Kp3/1NR5/B2B1r2/1Rq4k b - - 0 1 illegal: No proof kernel
1RRQ4/2qb1br1/qn2n1nK/4r3/3k2r1/3B1NBn/p1p1R1N1/1R1r1BQ1 b - - 0 1 illegal: No possible last move
2Q2R1Q/kQn3b1/6n1/N1Br2b1/b1N3b1/K5Q1/1nqprRr1/1qRBb1q1 b - - 0 1 illegal: No possible last move
1Nb1QK2/3R3r/NnqNN3/n1nk1R2/3b4/nq2Q2p/p1b3Br/B1Rb1n2 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 bxa4 d4 gxh4 f5 c5 f6 cxd4 Kf2 exf6 Ke1 f5 Bd2 f4 Be3 Bg7 Bc1 Bf8 Kd2 Ke7 Kd3 Ke6 Kc4 d5+ Kb5 h5 g4 a5 e4 f5 b4 h3 c4 a3 g5 f3 c5 d3 e5 f2 c6 h4 c7 f4 g6 f3 g7 d2 Rh2 d4 Qe1 d1B Bd3 f1N Qf2 a4 Rg2 h2 Rg3 h1Q Qe3 f2 Nd2 h3 Bb2 a2 Ne2 a3 Ne4 Bc5 Rf3 Nd7 Kc6 Nb6 b5 Ng3 Rc1 f1N Ba1 Rh7 Bb1 d3 Nf4+ Kf7 Bc2 Bd4 Nc5 d2 Be4 Bc2 Na6 d1B e6+ Kf6 e7 Ke5 Bd5+ Ne4 e8Q+ Qe7 Ne6 Qb4 Qf7 Qb3 Qe8 Nh6 g8R Nf7 Rg6 Nd6 Rg7 Ndc4 Rd7 Rb8 Bc3 a1N Bb2 Na4 b6 a2 b7 Na3 Bc3 Nb6 Bb2 Qd3 Bc3 Nb3 Ba1 Ra8 b8N Ra7 Qh6 Nec5 Be4 Rg7 Qe3 Rg2 Rg3 Rh2 Bg2+ Kf5 Kd6 Na5 Ke7 Qb3 Kf8 Rb7 Qf3+ Ke5 Qe3+ Be4 Rf3 Ra7 Re7 Kd5 Rg7 Bec2 Rgf7 Bd7 c8N Rc7 Nd6 Bc8 R7f6 Rh7 Rf7 Qg1 Rc7 Qf2 Re7 Qe2 Rb7 Qeb5 Rd7 Qc6 Rf5#
3n3b/4n3/b6N/1Q1qbp2/K1NRRBB1/RQ1qN1n1/1p2r1b1/2r1knNb b - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 d4 axb4 f5 c5 f6 cxd4 Bh3 exf6 Bg2 f5 Bf1 f4 Kd2 Ke7 e4 Ke6 c4 Ke5 Kc2 g5 Kb3 d5 h4 f5 a4 b5 c5 d3 h5 Kd4 a5 d2 h6 Ke3 e5 Kf2 a6 g3 h7 g4 a7 d4 e6 d3 e7 g2 e8N g3 c6 f3 c7 Nc6 Ra4 Nge7 Ng7 Ba6 c8N Qd5+ Kb2 b3 Ka3 b4+ Kb2 Nd8 Qc2 Ke1 Rh5 d1Q Be2 d2 Nb6 f2 Bc4 f1N Ra5 Rc8 Ne6 Bg7+ Nc3 Be5 a8Q Re8 h8R Q1f3 Rh4 d1B R8h6 Qfd3 Qb8 Bf3 Rd4 Rc5 Nd1 Bh8 Nh3 g1B Bf4 g2 Ne3 Bh2 Ra3 g1N Neg5 Ne2 Ng1 Bh1 Re6 Neg3 Re4 Rc6 Bb5 Rc3 Qb1+ Rc1 Nbc4 Bg2 Nf7 Bh1 Ka1 b2+ Ka2 Bg2 Qc2 b1B+ Kb2 b3 Nh6 Ba2 Bc6 Bb1 Qb5 Bh1 Ra1 Ba2 Ka3 b2+ Qcb3 Bb1 Kb4 Bc2 Ra3 Bd1 Ra5 Bdf3 Ra3 Bfg2 Ka4 Ne2 Bg5 B2e5 Bf4 Neg3 Bd7 Rf8 Be8 Rf6 Bh5 Rc6 Nd2 R6c2 Ndc4 Re2 Bg4
1N3R1b/KQRpb3/brrq4/2n3N1/2p2B1k/brp2N1n/B1b2R2/4b1QN b - - 0 1 illegal: No proof kernel
qQBnR3/1pk4n/3p2NQ/b5R1/n2B1p1r/pr1BB3/q1q4q/1b1NRK2 b - - 0 1 illegal: No proof kernel
BQ3nNK/5B1B/qpRNr3/1q4Nn/3nb3/1b3bk1/NB4r1/1bb2bRn b - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 d4 gxh4 f5 c5 f6 cxd4 Bd2 exf6 Be3 f5 Bc1 f4 Kf2 Ke7 Kf3 Kf6 Ke4 Kg5 Ke5 Kg4 c4 h5 a4 d5 e4+ f3 c5 f5 g3 b3 a5 h3 a6 f4 a7 b2 c6 d3 c7 d4 Ra3 h4 Ra1 h2 Qa4 b6 Qa2 f2 Qf7 h3 Ra5 f3 Rb5 d2 Qa2 d1B Qa5 d3 Bg5 d2 Qa1 Qd7 Nc3 b1B Na2 Bb7 c8N Ba3 Bf6 Bb3 Rc5 d1N Nd6 Bc1 Bd3 f1Q Rc6 f2 Nf3 Rh6 Ng5 Ne3 Rg1 h1B Bh8 h2 Qb2 Kh5 g4+ Kh4 Qd2 Nc2 Qf4 Bf3 Qf8 Na6 Qb8 Re6+ Kf5 h1N e5 Nf6 Kg6 Qe8+ Kg7 Nc5 Bh7 Qh5 Ndf7 Qa6 Nd6 Nfd7 Kg8 f1B Bf6 Ne4 Kh8 Nf8 Bg7 Rh6 e6 Nf6 e7 Nd4 e8B Rg6 Bf7 Rh6 Nge4 Qhb5 g5 Nh5 g6 Kh3 Be5 Kh4 g7 Re6 g8N Kh3 Rc7 Kh4 Ng5 B7e4 Qc8 Rb8 a8B Rb7 Rc6 Rc7 Be8 Rg7 Qb8 Rgg6 Bf7 Rg7 Nh3 Rg2 Ng5 Kg4 Bf6 Kg3 Bg7 Ne2 Ba1 Nd4 Bb2
N1bB2Nn/6qq/Rp1r1bb1/1K2k3/3Q3b/N3b1N1/4Rq1r/Qbq1N1R1 b - - 0 1 illegal: No possible last move, all moves rejected
1kq5/n3Q2B/1pnqN2K/rb4n1/N3R2b/N3Q1B1/Qp4pq/rQnN4 b - - 0 1 legal: proof: b4 d5 a4 a5 g4 axb4 c4 h5 cxd5 hxg4 f4 e5 Qb3 exf4 Ra2 g3 Ra3 g2 Qd1 Nf6 Rc3 Ng8 Rg3 fxg3 h4 Kd7 d4 f5 Kd2 g5 Ke3 c5 h5 Kc7 h6 b3 a5 c4 a6 c3 h7 c2 a7 b2 Rh4 g4 Kf4 Ne7 Kg5 f4 e4 f3 e5 f2 e6 Bd7 Ne2 g1Q d6+ Kc8 d5 g2 Nec3 g3 Bd3 f1Q Bf4 Qh2 Rg4 Ng8+ e7 g1N Be4 g2 Bg3 Qa5 e8Q+ Qd8+ Kg6 c1N Qa4 Qe1 Nd1 Nf3 Bc2 Qh4 Qe3 Qhh1 Rf4 Bc6 d7+ Kc7 Bf5 Qc8 d8N Qh2 Be4 Be7 d6+ Kd7 Qa5 Bh4 Ne6 Ne7+ Kg7 Rd8 Kh6 Qd2 Qa1 Ng5 Bg6 Qc7 h8Q Kc8 Qh7 Bb5 Nc5 b6 Re4 Qb4 Qg7 Qd4 Bh7 Nbc6 Qf7 Qe5 Qf6 Qb7 d7+ Kc7 Qg7 Nc8 Qf6 Rg8 d8N Qd6 Qe6 Rb8 a8Q Rg7 Q8a5 Ra8 Qf6 Kb8 Nde6 Qa6 Qf8 Rga7 Qe7 Qb7 Q5a3 Ra4 Qab3 R8a5 Qbd3 Ra2 Na4 N8a7 Na3 Qa6 Qd5 Qc8 Qb1 Ra1 Qda2
1K1Nr3/1RNb1Bn1/2Bn1q1k/1n2bB1N/R1r3r1/5r1q/1Bn2p2/3Nb1R1 b - - 0 1 legal: proof: g4 e5 d4 h5 f4 exf4 a4 hxg4 d5 b5 axb5 f3 d6 g3 Qd5 cxd6 Qh5 d5 Qh3 d4 Qg2 fxg2 Kd2 f5 Kd3 Kf7 Kc4 Kg6 Kd5 a5 b4 a4 c4 d3 h4 f4 e4 a3 h5+ Kh6 e5 g5 e6 f3 e7 a2 Kd6 d2 b6 d1N c5 f2 b7 Ra4 c6 Nf6 c7 Nb2 b5 Nc4+ Kc5 d5 b6 d4 Bd3 Na6+ Kc6 Nb4+ Kc5 Nd6 b8R Nfe8 b7 Ng7 Kb6 Nc2 e8B Rc4 Ka7 Bd7 c8B Qf6 Nh3 g1R Ba3 g2 Be4 d3 Nc3 d2 Bc6 d1N Bf7 g4 Bb2 g3 Nf4 Re1 Rg1 Re3 Ka8 Rf3 Ka7 Be7 Ka8 Re8 Ka7 Nde3 Nd1 Nd5 Ka8 Nc7+ Ka7 Kg5 h6 Ncb5+ Ka8 Bf8 h7 Kh6 h8N Be7 Nh5 Bf8 Re1 g1Q Rf1 Qh1 Rg1 Bg4 Bf5 g2 Rc8 Qh3 b8N Be7 Rc7 Bd8 Rb7 Ba5 Bfd5 Be1 Bf7 Ree4 Na6 Re8+ Bc8 Bd7 Nc7 Ra4+ Kb8 Rc4 Rb1 a1B Rc1 Ne3 Rc3 Nc2 Ra3 Rf5 Ra4 Rf3 Ba3 Be5 Bb2 Be6 Bg8 Bd7 Nf7+ Kg6 Nd8 Kh6 Rf1 g1R Bf7 Rg5 Rg1 Rgg4 Bcd5 Bc6 Bf5 Bd7 Bc6
1Kb3b1/NBN2nn1/2bN1Pp1/1qQBb3/1R2p1nn/3k1q1R/1q6/B1r1R3 b - - 0 1 legal: proof: b4 a5 g4 h5 a4 hxg4 d4 b5 e4 c5 e5 cxd4 e6 fxe6 Bd2 e5 Ke2 e4 Ke1 Ra7 Bc1 Rb7 Nd2 axb4 Nb1 b3 Ke2 b4 Ke1 Rb5 axb5 Rh5 Bd2 Rh7 Bc1 Rh8 Kd2 Kf7 c4 Kf6 h4 Ke5 f3 d5 c5 b2 c6 d3 Ke3 d2 h5 b3 c7 d4+ Ke2 g3 b6 e3 Kd3 g6 Kc4 g2 Kc5 e2 f4+ Ke4 h6 e1N h7 e5+ Kb5 d3 f5 Qe8+ Ka5 Ne7 f6 Nf3 b7 Nf5 Kb6 N3h4 Ka7 Nc6+ Ka8 Nd8 b8R Qb5 Na3 b1Q Ne2 g1N Nc2 b2 Qe1 d1Q Qc3 d2 Ncd4 Nh3 Nc6 Nf7 Nf4 Ng7 Na7 Qf3 Qc5 d1B Bg2 Ba4 Ne6 Nf2 Rh3 Ng4 Bf4 Qc2 Re1+ Kd3+ Rb7 b1B Kb8 Rg8 h8N Ba2 Be3 Bd6 Bd4 Bd5 Ba1 Qcb2 Bh1 Bc6 Bg2 Bb3 Bh1 Qe3 Bd5 e4 Rb6 Be5 Rb7 Nd8 Nf7 Qf3 Nd6 Nf7 Rb6 B8d7+ c8B Re8 Ng5 Re7 Bb7 Bc8 Ne6 Rc7 Qc1 B6d7 Qg5 Rc1 Nc7 Bc4 Bdc6 Bce6 Bd5 Bc6 Qh5 Nd8 Qg5 Bg8 Qf5 Nf7 Qh5 Qa6 Rb4 Qb5 Qg5 Ngh6 Qg1 Ng4 Qc5
3KB3/Q1Rp1r2/b2B4/1r1R1q1B/1R3N2/pNkqnr2/Pp1brpN1/2r5 b - - 0 1 legal: proof: g4 c5 h4 e5 f4 g5 d4 gxf4 g5 exd4 b4 Nc6 c3 Ne5 h5 Ng6 hxg6 cxb4 Qa4 bxc3 Qc2 Ke7 Qd1 Ke8 Kf2 Ke7 Kf3 Kd6 Ke4 Kc5 Ke5 Kc4 e4+ d3 g7 a5 g6 h5 Rh3 f5 Qe2 b5 Bd2 b4 Be1 f3 Qc2 a4 Qg2 f4 Qc2 a3 Kf5 h4 e5 b3 e6 b2 e7 f2 e8B f3 Rh1 h3 Qa4+ Bb4 Qa7 c2 Nd2+ Kc3 Rc1 h2 Nh3 Rb8 Nf4 Ba6 Nb3+ d2 Be2 f1R Ng2 Rh7 Bg3 d1Q Bd6 Ne7+ Kf6 Qd3 g8R Rb5 g7 Nd5+ Kf7 f2 Bh5 Re1 Rf1 Re3 Rfd1 h1R Rf8 Qg5 Rh8 Rh6 g8N Rhe1 Ne7 R1e2 Ng6 Rf3+ N6f4 Ne3 Rd2 Qgd5+ Ke7 Rf6 Kd8 Rf7 Rg8 Q3f5 Rg4 Qc4 Rd5 Qce4 Rcd1 c1R R1d4 Qd3 Re4 Kc2 Rc4+ Bc3 Rb4 Bd2 Rg6 Kc3 Re6 Rc5 Ree4 Ra5 Rb7 Rc5 Reb4 Rb5 Rc7+
K1nN4/1nrb1q2/Q2B2N1/1Q2B3/qbbnn3/b3k3/NR2qP2/1B1b1bR1 b - - 0 1 illegal: Other
b1q4B/4RNbK/3Qb3/N1k3P1/1pbRrn2/6r1/1rb1pQBn/2QqrR2 b - - 0 1 legal: proof: e4 a5 d4 g5 h4 gxh4 b4 axb4 e5 c5 e6 cxd4 Rh2 fxe6 Rh3 e5 Rh1 e4 Ke2 h5 a4 d5 f4 Kd7 c4 Kc6 g4 e5 c5 b5 f5 e3 Kf3 e4+ Kf4 d3 g5 d2 f6 e2 f7 e1R a5 e3 a6 h3 a7 d4 Bc4 b3 Qc2 d1Q Qd2 d3 Qf2 d2 Qe2 h4 Qd3 h2 Ra3 b2 Nc3 b1R Ra2 e2 Nd5 h3 Nf3 b4 Ne3 Na6 Rf1 h1B Bb2 Bg7 f8Q h2 Qd4 Nf6 Bd5+ Kb5 c6 Nc5 c7 Ng4 Nc4 Be6 c8Q Rh4 Qd6 Nd3+ Ke4 Qf8 Na5 Nf4 Qc1 Qc8 Qf2 Rh3 Ra3 Rg3 Re3 Bg2 Rd3 h1B Rd4 Nh2 Bc3 Rb8 a8R Rb2 Ra7 Bgh3 Ba8 Bc4 Re7 Bhe6 Bd5 Qd7 Bb7 Re8 Bd5 Qc8 Ba8 Bh6 Ke5 Bf8 Kf6 Bh6 Ne5 Bf3 Qd7+ Kc5 Nf7 Bh1 Bg2 Bf8 Bh3 Ba8 Qd8 Qc2 Bg2 d1B Qd7 Qd3 Qd8 Bc2 Qd7 Qd1 Qd8 Nd3 Kg6 Bg7 Kh7 Bh3 Ra7 Re4 Re7 Nf4 Qd6+ Kb5 Rd2 Bhe6 Be5 Ng6 Rd4 Nf4 Qd7+ Kc5 Bf6 Bh6 Bh8 Bg7 Qd6+
qQ4r1/qbn1n3/N4n1R/2qN1Qk1/2pPR3/1b2n1pK/B2b1B2/1R2br1Q b - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 c4 axb4 f5 d5 f6 dxc4 Bh3 exf6 Bg2 f5 Bf1 f4 Kf2 Ke7 Kg2 Kf6 a4 g5 e4 c5 h4 b5 h5 g3 d3 b3 a5 g4 h6 c3 h7 c2 e5+ Kg5 e6 f5 a6 b4 e7 c4 e8Q b2 a7 b3 Ra6 Nd7 Rah6 Bb7+ Qe4 Ndf6 Be2 Bb4 Qe1 Ne7 Qc3 Rg8 Be3 c1B h8R Bd2 Bd4 f3+ Kf1 f4 Bb6 f2 Kg2 f1N Na3 b1B R1h3 b2 Bd1 Bc2 Bf2 b1N Rh1 Bb3 Qc1 Nc3 Ne2 Ncd5 Nc2 Nc7 Nc3 Qd6 Nd5 Raf8 a8Q Qc5 Qb8 f3+ Kg1 g2 d4 Ne3 Kh2 g3+ Kh3 g1Q Rh4 Be1 R8h6 Bbd2 Ncb4 Rf7 Na6 Rff8 Rh2 Qh1 Bc2 Qa7 Bb1 Qc5 Ba2 Qa7 Bg1 f2 Qh7 Qf3 Re4 f1Q+ Rg2 Qd3 Bf2 Qc3 Qb1 Qb4 Rg1 Qbc5 Qd3 Qd1 Qf1 Qa1 Qg2 Rf7 Qh1 Rff8 Bb1 Qaa3 Ba2 Qa8 Rf1 Qca7 Rg1 Q3c5 Reh4 Nfe8 Re4 Rf3 Rf1 Nf6 Bg1 Bf2 Rd1 Bfe1 Rb1 Rf1 Bf2 Ng6 Qd7 Ne7 Qf5+
1K6/n2q1R2/1np5/RbN1r1N1/rn1p3b/QRq1qqQ1/4Qb1P/BBn4k b - - 0 1 illegal: No proof kernel
k1R2n1q/3b1b2/N1pP1p1R/2p1B3/6rB/pBr1bQ2/rpn1pQ2/3NR2K b - - 0 1 illegal: No proof kernel
3k1r2/p1PNqbB1/1BBn1Q2/1rr3bB/3KN1qR/nr2n3/6NR/1b5q b - - 0 1 illegal: No possible last move
Rqqb2Q1/pbnr1q2/qk3rN1/2Rb2bB/4p3/7K/5NBP/r1R3NR b - - 0 1 legal: proof: d4 c5 e4 cxd4 a4 f5 g4 fxe4 f4 b5 f5 bxa4 Bg5 h6 Bf4 Nc6 g5 Nb4 Bc1 Nd5 Be3 Ndf6 gxf6 Qb6 Bc1 Qd8 Bg5 hxg5 Kf2 e5 Kg2 d5 b4 Kd7 c4 Kc6 b5+ Kb6 f7 a3 f6 e3 Nd2 e2 Nh3 e1R Be2 e4 Qb3 d3 Qb1 g4 Qc2 g5 Qc1 g3 Nb3 d4 Rg1 d2 Rb1 d1B Qf4 a2 Na1 d3 Rf1 g4 Ng5 d2 Qb8+ Bb7 Rg1 Rh6 Rc1 Be7 f8R Qc8 f7 Rf6 Nb3 a1Q Nc5 Qa6 Nf3 Bd8 Nd3 Ne7 Rh1 Nd5 Ng1 Bb3 Nf2 d1Q Rh8 Rf1 f8N Nc7 Ng6 Qdd7 Rh5 Qf7 Rc5 Ba2 Rc3 Ra1 Rc1 Rf4 Bf3 Bg5 Bd1 Rf6 Bf3 Qcd7 Qg8 Rd8 Rd5 Qc8 c5+ Ka5 c6 Kb6 Rdc5 Rd7 Be2 Bd5 Bd1 Ne6 c7 Qb8 c8B Nc7 Kf1 g2+ Ke1 g3 Bh5 Rd8 Bh3 Rdd6 Nf3 g1B Kf1 Rd7 Kg2 Qa2 B3g4 Qa6 Kh3 g2 Be6 Bdc6 Bc4 Bd5 Bf1 Qa5 Nd1 Bd4 Nf2 g1Q Bg2 Qd1 Ng1 Qa6 R5c4 Qc2 Rc3 Ka5 b6 Bc5 Rc4 Be7 Rc3 Bd8 Rc6 Ba8 b7 Qcc4 Rc5+ Kb6 Ra5 Qc6 Rac5 Qce6+ Ng4 Qee8 Nf2 Qc8 b8R+ Bab7 Ra8 Qe5 Qe8 Nb5 Ne7 Qeb8 Ng6 Nc7 Qg8
5r2/2pbPB2/3bNbB1/k1n1Nb1K/1n4nR/q1B2Qb1/r5rq/2N1qN1R b - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 c4 axb4 f5 d5 f6 dxc4 Bh3 exf6 Bg2 f5 Bf1 f4 Kf2 Kd7 e4 Kc6 h4 Kb6 a4 g5 d4 f5 d5 g3+ Kf3 g2 h5 c3 h6 g4+ Kf2 f3 Kg3 f4+ Kf2 g3+ Ke1 b3 d6 b2 h7 f2+ Ke2 c2 Kf3 Bd7 e5 Ne7 e6 Ka5 Kg4 b5 Qe1+ b4 Kh5 f3 Ne2 g1R Qd1 b3 Nf4 g2 Nd5 Nec6 Bf4 c1B Bg3 Bf4 Nbc3 b1B Rh2 b2 Bc4 f1N Ne2 f2 Rh4 Ne3 Nc1 f1Q Qf3 Bf5 Be1+ Nb4 Bc3 Ng4 Ne3 Qe2 Nf1 b1Q e7 Na6 Ba2 Nc5 Bf7 Bg3 Bg6 Rg8 h8N Bg7 Nf7 Rf8 Ne5 Bf6 Bf7 Qbc2 Bg6 Qe1 Bf7 Bb5 d7 Ra7 Bg6 Qa8 d8N Bbd7 Ne6 Qa2 Ned3 Bd6 Ne5 Qa3 Rb1 Qae4 Bf7 Qf4 Bg6 Qh2 Ra1 Kb6 a5+ Kb5 a6 Ka5 Qa8 Rh1 Qf3 g1B Bf7 Bf2 Rb1 Raa8 a7 Rg1 Ra1 Rg2 Bg6 Rae8 a8B Bg3 Bd5 Ra8 Nd8 Kb6 Bdf7 Ra4 Ne6 Ka5 Qf2 Qb3 Qe3 Raa2 Qf3 Qa3 Ne2 Be8 Ne3 Qd2 Rh1 Qe1 Nf1 Bd7 Nc1
4R1k1/1Kn1Br2/N3Rrq1/q2r1p1b/2n2PQB/b4R1q/3p2Rp/2N1Q2n b - - 0 1 legal: proof: b4 c5 a4 b5 d4 cxb4 axb5 e5 Qd2 exd4 Qd3 Qb6 Qd1 Qd8 h4 a5 h5 a4 e3 g6 Bc4 gxh5 Bd5 h4 Bb3 axb3 Kd2 d5 Kd3 h5 g4 b2 c4 f6 c5 Kf7 c6 h3 g5 b3 e4 h4 e5 h2 g6+ Kg7 b6 h3 c7 Rh6 e6 Nd7 e7 Ra7 e8R Ne7 b7 Nb6 b8B Bg4 c8Q Nc4 Ra3 Qa5 Bg3 Kg8 f4 Bh5 Nc3 b1R g7 b2 Bh4 f5 Na2 Rf6 Ne2 Rb7 Rg1 h1N Be3 h2 Qe1 Rd1+ Bd2 Rc7 Nec1 Ra7 Nb4 b1Q+ Nc2 Qb7 Rg6 Qbb6 Nb4 Qe6 Qb8 Qf7 Rg2 Qg6 Na6 Rd7 Qbe5 Rb7 Q5e2 Rd7 Kc2 d3+ Kb3 d4 Qg4 Nd5 Bb4 d2 Re6 d3 Bd6 Nc7 Bb4 Qe5 Ka4 Rdf7 Be7 Qa1 Kb4 Qc3+ Kc5 Qe5+ Kc6 Qa5 Bd8 Bd6 Kb7 Bb4 Be7 Bc5 Rb3 Ba3 Qe4 Re1 Bf8 d1Q Qe5 d2 Rf3 Qe2 Qe3 Qf1 Qf2 Re5 Qe1 Kh7 g8R Rd5 Be7 Qd3 Re8 Qdc3 Bf8 Kg8 Rf1 Qg3 Rf3 Qh3 Be7+
1Q1N1k1r/2R2N2/1pQq4/P1Nb2n1/bq5b/1q1R1nr1/bn5q/1NBb1K1B b - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 d4 gxh4 f5 c5 f6 cxd4 Bd2 exf6 Be3 f5 Bc1 f4 c4 f5 g4 d5 e4 h5 a4 f3 a5 b3 e5 f2+ Ke2 b6 g5 h3 g6 h4 e6 b2 e7 h2 g7 f4 c5 f3+ Kd2 d3 c6 h3 c7 d4 Ra3 Nf6 g8Q Be6 c8N Nbd7 Qh7 Ne5 Rb3 Qd6 Qc2 Ne4+ Kd1 d2 Qg7 Ng5 Ra3 Ba2 Nc3 b1Q Na7 Qb3 Ba6 f1B Nb1 f2 Be2 Nef3 Ba6 Bb5 Bc8 Ba4 Ke2 d1N Nc6 d3+ Kf1 d2 Bb7 Nb2 Qg8 d1B Ne2 Rd8 Rg1 h1B Nec3 h2 Ne4 Rh3 Qh8 Rg3 Nc5 Kf7 e8N Be7 Qe5 Kf8 Rg2 Rc8 Nd8 Qde6 Qce4 Ng1 Q5f5+ Nf7 Qfg4 Rc6 Bc8 Bh4 Nd3 Ng5 Bb7 Qb4 Qgf4+ Qf7 Qb8 Rh6 Nd6 Rh8 Rb3 Qg6 N6f7 Qgd6 Ra3 Rh3 Rg4 Rg3 Rc3 Bhf3 Rc7 h1Q Nc5 Qh2 Qd5 Bh1 Rd4 Be4 Rd3 Bef3 Bc8 Be4 Bh3 N1f3 Qc6 Bed5 Bg2 Bdc2 Ke2 f1Q+ Ke3 Qd1 Kf2 Bcb3 Rd4 Qc2+ Kf1 Qcc3 Bh1 Bd1 Rd2 Qcb3 Rd3
k2B2N1/1n1n4/r3q2p/2q1NRbP/2r2RrR/1K3p2/nbQ1b2R/3QBn1r b - - 0 1 legal: proof: e4 a5 b4 axb4 f4 f5 d4 c5 Bd3 cxd4 Bc4 g6 Be6 fxe4 f5 Nc6 f6 Nb8 Bf5 gxf5 Kd2 d5 h4 Kd7 a4 Kc6 c4 e5 Kc2 b5 g4 Kb7 c5 e3 f7 d3+ Kb3 h6 a5 e2 h5 e1Q g5 f4 g6 d4 g7 e4 Ka2 f3 Nh3 e3 Qc2 d2 Ba3 d1R Qg2 e2 Nf4 d3 Qg5 d2 Qe5 b3+ Kb2 b4 Qe4+ Nc6 Qd3 Rc1 Nd5 d1R Rh4 Be7 f8B Bg5 Be7 Qd6 Ne3 Nf6 g8Q Ra6 Qgh7 Rg8 Nf5 Ka8 Nd2 Nd8 c6 Qc5 c7 Rc4 Ra2 Nb7 Bd8 Nd7 Ne7 Rg7 Qc2 Rgg6 Qc1 Rg8 Qhc2 Rg7 Kb1 b2 Ng8 Rgg6 Qc3 Rg7 Kc2 b1N Kb3 Rgg6 Q3b2 Nc3 Qbc2 Rg7 Bb2 Rgg6 Ra4 Na2 Bc3 Rg7 Q1b1 Rc1 Qd1 Rgg6 Qbc2 Rg7 Kb2 b3 Rb4 Rgg6 Ka3 b2 Kb3 b1N Rf4 Rac6 a6 Rb6 a7 Ra6 Nf1 Rg7 Nh2 Rgg6 Ng4 Nd2+ Kb2 Nf1 Ne5 Qef2 Rb5 e1B Kb3 Qe2 Bd2 Bf2 Be1 Bd4 Rh4 Bb2 Rb4 Rg4 Rf4 Ra4 Rf5 Rac4 Rh2 Ra6 Rf4 Nb8 Rf5 Bd7 c8R Bb5 Rc7 Ra1 Rcf7 Nd7 Rf4 Qe4 R7f5 Qed5 Rh4 Qe6 Qc3 Nh2 Nd3 Nb4 Qcc1 Be5 Nf6 Rd6 Qe2 Re4+ Qc4 Rc6 Bd2 Rh1 Ng8 Nf1 Qd1 Rd4 Re4 Bh8 Re2 Na2 Be1 Rdf4 Reh2 Bb2 Ne5 Re4 Qcd5 Be2 Qd3 Nd6 Qc2 Kb7 a8R Ref4 Ra7+ Kb8 Rb7+ Ka8 Rb4 Nb7 Rc4 Ra6 Qdd1 Qg6 Rd4 Qe6+ Rd5 Rc4 Rd4 Ng3 Re4 Nf1 Ref4
1rRk2B1/Bpr2bnK/Nnpr4/1N2qN2/1Q1p1bRN/1P4rn/2q5/1rQ5 b - - 0 1 illegal: No possible last move
2N1Q3/1b3BpK/3Qn3/b1q2R1B/bBpn3P/2b2r1B/p1RrNqkp/3q4 b - - 0 1 illegal: No proof kernel
4k2N/3QnrB1/R2bNb1b/1q2q3/1Bn1Q3/rb1K1bP1/1b5n/2BBq2B b - - 0 1 legal: proof: f4 f5 d4 g5 e4 gxf4 b4 fxe4 g3 h5 a3 c5 a4 b5 axb5 cxd4 Ra3 h4 Rf3 h3 Rf2 Nc6 Rd2 Nb8 Rg2 hxg2 Ke2 a5 h4 d5 c4 e5 b6 f3+ Kd2 d3 b7 e3+ Kc3 a4 h5 d4+ Kb2 f2 h6 a3+ Kb3 e2 h7 e1B b5 d2 Kc2 a2 c5 a1B b6 d3+ Kb3 e4 Kc4 e3 c6 e2 c7 Ra3 Nf3 g1B Ng5 Bf6 Ne6 Qd6 Rh6 Ne7 Bh3 f1N Bg2 Nbc6 b8B Bgd4 b7 Qe5 Nc3 Nh2 Ne4 Bb2 Bh1 B8g7 N4g5 Rf8 h8B Rf7 Rg6 Bh6 Bg7 Bd7 Qc2 d1Q c8B Bb4 Bd6 e1Q b8Q d2 Qc7 Qh5 Qe4 d1B Qb7 Bb3+ Kd3 Na5 Qa7 Rf8 Nf7 Bc6 Nh8 Nc4 Bb7 Qhf5 Bf3 Rf7 Bd1 Qb5 Qd4 Qfe5 Qa7 Ba5 Bb4 Bc7 Qf4 Qd6+ Nd4 Bfg5 Ba8 Bh1 Bg2 Bb8 Qe4 Qde5 Ra6 Bf6 Ne6 Bd6 Bgf3 Bg2 Qc7 Bh3 Qcb7 Bg4 Bh1 Bf3 Qd7+
1b1n4/pr4q1/KB2q1N1/3b2kB/2Rb2N1/2n1N1Nq/P1B3Q1/3nbq1Q b - - 0 1 legal: proof: c4 c5 b4 e5 f3 g5 f4 exf4 bxc5 d5 Ba3 dxc4 Bb2 Bh3 Bc1 Bc8 h4 gxh4 Qb3 b5 Nf3 b4 Bb2 Na6 Ng1 Rb8 Bc1 Rb6 Qc2 b3 cxb6 b2 Qd1 bxa1B g4 Ke7 d4 Kf6 Kd2 h5 e4 f3 d5 h3 d6 c3+ Kd3 h2 Kc4 h4 Kb5 c2 d7 f2 b7 h3 b8N Nc7+ Ka5 Bd4 Qd2 Ne6+ Kb5 Qc7 d8Q+ Ne7 Nc6 Bb7 Na3 Rh7 Bd3 f1Q Nc4 Qe2 Qa8 Nd5 N6e5 Bd6 Ne3 Nd8 Ng6 Kg5 e5 f5 e6 f4 e7 f3 e8B f2 Qe1 Bc6+ Ka6 f1Q Qg3 Re7 Qg2 Nc3 Qb7 Qee1 Ne2 Bd5 Ng3 Bb4 Ba3 c1B Qa8 Bd6 Bc5 Bd2 Bb6 Rg7 Rg1 h1N Qc6 h2 Bf7 Ne2 Bc2 Nf2 Qh1 Nd1 Qa8 Be6 Qag2 Qc3 Be8 Rb7 Bf7 Bb8 Be8 Qf8 Rf1 Qg8 Rf4 Qg7 Bf7 Bd5 Re4 Bde5 Rc4 Qb3 Be8 Qf1 Bf7 Nec3 Be8 Kh6 Bf7 Bd4 g5+ Kh7 Be8 Be1 Nf8+ Kh8 g6 Qe7 Qhg1 h1Q g7+ Kg8 Bh5 Be4 Ng6 Kf7 g8N Qh3 Nh6+ Kf6 Nhg4+ Kg5 Q1h1 Qg7 Qe2 Bf3 Rc6 Qe6 Rc4 Bd5 Qeg2
1K1N3k/N1r1p1nb/2p2nb1/4b1R1/b1R4B/N6P/QQ2qp1Q/4rNqb b - - 0 1 legal: proof: c4 a5 f4 g5 b4 axb4 e4 gxf4 g4 b5 e5 d5 cxd5 h5 g5 Ra3 Be2 Re3 Kf1 Rxe5 Bf3 Re2 Bg4 hxg4 a4 f5 d4 Kf7 g6+ Kg7 a5 g3 d6 f3 d5 b3 a6 f4 a7 f2 Kg2 f1B+ Kf3 b4 a8Q g2 d7 b2 d6 b3 h3 Re5 Qa3 Na6 Ne2 g1Q Qd2 Nf6 Ng3 Bb5 Nf1 Re1 Qh2 Ba4 Ra2 Qe8 d8N Nc5 d7 Ne6 Nc6 Bb7 d8N Qd7 Qb4 Qd2 Na3 b1B Rc2 b2 Rc4 Bf5 Qc3 b1B Qb2 Kg8 g7 Bg6 Qg2 Rh5 Qh2 Rd5 Na7 Rd7+ Re4 Qc2 Be3 Bd5 Bf2 c6 Bh4 Qg5 Rg1 Rc7 Rg4 Qd1+ Kf2 f3 Rc4 Qe2+ Kg3 Qc1 Rg5 f2 Rb4 Kh7 Rc4 Bh1 g8Q+ Kh6 Qf7 Ng7 Qe6 Qcd1 Kf4 Kh7 Qd5 Bbe4 Ke5 Kh8 Qdd2 Qc1 Qa2 Bh7 Qdb2 Beg6+ Kd4 Qcd1+ Kc5 Qc1 Re5 Qg5 Kb6 Qg1 Rg5 Ngh5 Qhe5 Bh6 Qh2 Ng7 Rb5 Bf4 Rg5 Be5 Ka6 Rc8 Kb7 Rc7+ Kb8
QR2N3/k1b1Nb2/1p3K1b/1b6/pPpr2R1/n1b1N3/1Q1QqB1r/rn1Q3q b - - 0 1 illegal: No proof kernel
q2r4/Bp6/1P2qP1Q/1Knqb1R1/1bn2nNp/1R1rNN1r/2b1q2B/1k1B4 b - - 0 1 legal: proof: e4 a5 c4 g5 h4 gxh4 b4 f5 c5 fxe4 b5 d6 Qa4 dxc5 Qa3 c4 Qb4 axb4 Ke2 Kf7 f4 Kf6 a4 Kf5 d4 h5 g3 c5 a5 e5 d5 b3 d6 b2 b6 c3 d7 h3 a6 c4 a7 c2 Ra6 e3 g4+ Ke4 g5 h2 g6 c3 f5 Nf6 g7 Bb4 g8Q Nd5 f6 Nf4+ Ke1 e2 Qf8 Kd3 Bd2 c1R+ Kf2 Kc2 Ke3 e1Q+ Ne2 e4 Kd4 e3 Kc4 Rd1 Rg1 h1Q Ng3 e2 Ra3 Na6 Qh6 Nc5 Kb5 Qd5 Nf5 h4 Be3 Rd3 Nd2 b1N Nf3 Nd2 Rb3 Nc4 Rg5 Re8 Bf2 Ree3 Bg3 Qf2 Bg2 e1Q Bh2 Qfe2 Bh3 Kc1 Bg4 c2 Bh5 Q8g8 d8B Be6 Be7 Rd8 a8N Bf7 Bg4 Bg6 Bd6 Qge6 Nc7 Q1d1 Ne1 Rh3 Nf3 Qh1 Ne3 Be4 Rc3 Kb1 Bh5 c1B Rb3+ Bb2 Ng4 Qhe1 Be5 Qc8 Bd6 Qa8 Be5 Qe6 Nd5 Qh1 Bb8 Qhg2 Ba7 Bg6 Ra3 Be5 Nde3 Bf5 Ng1 Qe4 Nf3 Q4d5 Rb3+ Qb2 Ne1 Rd4 Nf2 Be4 Bd1 Bf5 Rc3 Qe2 Nf3 Bc2 Nfg4 Rd3 Rb3+
2rQR3/1pr1B2n/P1bP1k1q/KRb1n3/5q2/1R2bB1q/1n1Nq3/QN1n4 b - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 c4 gxh4 f5 d5 f6 dxc4 Ba3 exf6 Bb2 f5 Bc1 f4 d4 Ke7 Kd2 c5 e4 f5 a4 h5 g4 f3 e5 c3+ Kc2 f2 Kb3 f4 a5 f3 Ka4 c4 g5 h3 a6 c2 e6 h2 d5 h4 g6 b3 g7 c3 Be3 c1B Kb4 h3 Qd2 c2 Nc3 b2 Ka4 b1N Bf4 Nd7 Bh6 Ngf6 g8Q Rh7 Nce2 Ne5 Qgg5 Nc3+ Kb4 Bd7 Qge3 Bc6 Rb1 Rc8 Bg2 f1Q Qed3 f2 Ng3 Qe2 Ne4 f1Q Qd4 Qf4 Nf3 Qe8 Rd1 h1Q Ka5 h2 Rb5 Qhf1 Qe1 h1Q Rd3 Be3 Qa1 c1N Nfd2 Nd1 Rdb3 Ncd3 Nb1 N3b2 Bf3 Qhh4 Qd3 Qfh3 Ned2 Rg7 Qd4 Nh7 Qb6 Kf6 e7 Qd8 e8R Bfc5 d6 Re7 Bf8 Qhh6 Qc7 Rd7 Qb6 Qe7 Qd8 Rdc7 Bxe7+
1q1bn1nn/bB4Q1/RBbr4/2K3bp/5p2/1b1kN3/rQPB1P2/2RNr1r1 b - - 0 1 illegal: Other
1N3qQ1/2kr1p1R/K3b3/n6n/1b4Bb/1R1Ppb1N/b2PBr2/qQb1q1B1 b - - 0 1 illegal: Other
q2R3N/k2nK2p/bPR2Q1q/2r4N/rr2B2P/3BbN1p/r3q1q1/2Q2n1b b - - 0 1 illegal: No possible last move, all moves rejected
1b6/Qrp2rn1/4B1rP/1nRb1P2/2b4q/3Npp1R/2bNkb2/BBQn3K b - - 0 1 illegal: No proof kernel
4q3/PBb2p2/1r1pk1P1/1R2Q1qb/q3p2n/2q1r1R1/NBqNQ2K/1Q1rn3 b - - 0 1 illegal: No proof kernel
2r4q/1Kn1pNq1/4p2Q/1B1N1kRp/1nB2N1P/1P2bn1q/4q2b/2rbR2Q b - - 0 1 legal: proof: e4 c5 d4 cxd4 a4 g5 f4 b5 e5 bxa4 e6 fxe6 f5 Qb6 Bd2 Qd8 Bf4 gxf4 Kf2 Kf7 Kf3 Kf6 Ke4 a5 c4 h5 g4 d5+ Kf3 d3 h4 a3 c5 d4 Ke4 d2 c6 f3 b3 a2 c7 a4 Rh2 a3 Qe1 d1Q Rc2 f2 Qa5 d3 Nd2 Bh6 Rc3 Be3 Nb1 d2 Ne2 Bb7+ Qd5 Nc6 c8B Nb4 Bd7 Rc8 Nf4 Qe2 Rc5 d1Q Nc3 Ba6 Rc1 a1B Bb5 a2 Qc6 Q1d2 Re1 Bb2 Qb7 a1Q Qd5 Qf8 Qb7 Qg7 g5+ Kf7 f6 Qdd3+ Ke5 Bbc1 Qh1 Rc7 Bg2 f1N Bd5 Nh2 Bdc4 Bb7 Rd5 Qa8 Rc5 Bf3 Ncd5 Bg1+ Ne3 Qf5+ Kd4 Qh3 Rf5 Rd7+ Kc5 Rd1 Kb6 Qc8 Nd3 Kg6 f7 Nf6 f8Q Ne8 Rd5 Qd8+ Kb7 Nc7 Qf4 Bg4 Qf8 Nf3 Nf4+ Kh7 Rf5 Bh2 Ned5 Be3 g6+ Kh6 Qf6 Rc1 Rg5 Qdg8 Qf8 Qh7 Qf6 Rc8 Qf8 Qh8 Qf6 Qf7 g7+ Kh7 g8N Qfg7 Bd7 Bf5 Qf8 Bc2 Bdb5 Bd1 Nh6 Rd8 Rgg1 Ra8 Nf7 Rc8 Ng2 Kg6 Ngf4+ Kf5 Rg6 Qa1 Qh6 Qag7 Rg5+
3Qq2k/1K6/4Nq2/P2R1RN1/bbrq1r1r/rP3B2/qBnrbn2/R5Rr b - - 0 1 illegal: No proof kernel
4QK2/Q2rP3/B1N2nr1/1P2qb2/nqp4p/4B2n/QB1bb3/Nk1rR3 b - - 0 1 legal: proof: b4 a5 h4 g5 a4 gxh4 c4 e5 f4 exf4 Ra3 d5 cxd5 b5 axb5 axb4 Qa4 bxa3 Qb3 Bc5 Qd1 Bf8 Kf2 Kd7 Kf3 Kd6 Ke4 Kc5 Ke5 Kc4 g4 h5 d4 f5 d6 c5 d5 a2 g5 a1Q+ Qd4+ Kb3 e4 Ka2 d7 h3 Ke6 f3 Kf7 f4 d6 h4 e5 c4 e6 f2 g6 h2 e7 f3 g7 Qa5 d8Q Bf5 d7 Ra7 Bh3 f1R Be3 f2 Qe8 Qb4 d8B Nf6 g8Q Nbd7 Qg2 Nc5 Bc7 Rg8 Nd2 Rd1 Ne2 f1B Be5 Rg6 Nb3 Na4 Qc5 Qb2 Na1 Rad7 Qa7 Bh6 Nd4 Kb1 Nc6 Be2 Re1 h1N Qh2 Bg5 Kf8 Nf2 Bg2 Nh3 Bh1 Qc1 Bb2 Qcc3 Bd5 Qe5 Be6 Rd3 Bc8 Rd7 Ba6 Bf4 Bc5 Bd2 Be3 Qec5 Qhc7 Qe5 Qa5 Nc5 Qa3 Na4 Qa2+
b1b2rnQ/1RP1ppkB/4pN1p/pK5B/1R3B2/pQ2rR2/2p2P1b/2n3q1 b - - 0 1 illegal: No possible last move
3r4/n4K2/rP3NNb/1nbB1bB1/2QR2b1/3P1B1r/Bqn2r2/kn3Bq1 b - - 0 1 legal: proof: b4 b5 f4 c5 a4 g5 h4 gxh4 c4 e5 Ra2 exf4 Rc2 d5 axb5 cxb4 c5 Bd6 Rc3 Bf8 Rc4 dxc4 Kf2 Ke7 Kf3 Ke6 Ke4 h5 g4 a5 g5 f5+ Kf3 Kd5 e4+ Kd4 d3 c3 c6 c2 g6 h3 c7 a4 e5 h2 b6 a3 e6 a2 e7 a1N e8B h4 g7 h3 Na3 Kc3 Bh5 b3 Be8 b2 Be2 b1N Bd7 Nc6 Be8 Qd4 Bh5 Na7 Bd2+ Kb2 Nb5 c1B Nd6 Nf6 g8B Ne4 Bg4 Nc2 Ba2 Ka1 Qe1 Qb2 Bb3 Nec3 Bc4 Ncb5 Ne8 Bc5 Nf6 Rd8 Be3 Be6 c8B Bd7 Kf2 f3 Kg3 f4+ Kh4 f2 Kh5 f1Q Kg6 f3 Ba2 f2 Bb7 Bf5+ Kf7 Qg2 Nf3 f1R Bh5 Qg1 Qh4 Rf2 Qc4 Bd2 Nh4 Bg4 Bd4 Bh6 Bd5 Bf5 Be5 Nc6 Be4 Ra6 Bf1 Nca7 Bc6 Qg5 Rg1 h1B Ng6 h2 Bf4 Bf3 Bd5 h1R Rg4 Rh3 Bd2 Be2 Rd4 Qg1 Bg5 Bd1 Bhf3 Be2 Bh1 Beg4 Bhf3
n1K5/N2pBp2/1bb1N2n/3rpqrk/1Q1P3N/1brR1N2/2B1PnbB/2n5 b - - 0 2 legal: proof: b4 g5 f4 a5 a4 axb4 g4 gxf4 g5 h5 Ra3 Rh7 Rg3 Rh8 c3 bxc3 Rg4 hxg4 Kf2 c5 h4 b5 d4 e5 g6 c2 h5 b4 g7 g3+ Kf3 g2 Kg4 c4 Kf5 f3 h6 c3 h7 f2 a5 b3 a6 b2 a7 Ke7 Rh3 Na6 Qd2 Nc7 Qf4 Nh6+ Ke4 Rg8 Na3 b1B h8B Ba2 Rd3 Bb3 Qd2 Kf6 Nf3 Kg6 Nb5 g1N Bh3 f1B Bf5+ Kh5 Bh7 Rb8 a8N Nh3 Na7 Qg5 Qe1 Ba6 Bf4 c1R Bh2 c2 Qb4 Bc5 Bf5 Bb5 Bh7 Ne6 Nc7 Bb6 Bf5 Bg2 Bh7 Rgc8 g8N Rg1 Bf6 c1N Ne7 Qg6+ Nf5 Bc6+ Nd5 Qg5 Nh4 Nc7 Be7 Na8 Bf5 Bb7 Bh7 Rc3 Bf5 Bc6 Bh7 Bb5 Nc7 Rc8 Ne6 R8c5 Bf5 Rd5 Bh7 Bc6 Bf5 Qg8 Bh7 Ng4 Kf5 Nh6+ Kf6 Qe8 Rd1 Qc8 Bc2 Nf2 Rd3 Qa6 Bd6 Qc8 Ke7 Qh8 Bc5 Qh7 Ke8 Qf5 Be7 Nc7+ Kd8 Na8+ Kc8 Bh1 Qa4 Rg5 Qc4 Bg2 Qb4
B2BK3/QR2N2b/4n1Q1/pR4q1/B3r1nP/2r1nk2/Pbb2qqB/q2b3b b - - 0 1 legal: proof: f4 b5 g4 g5 c4 gxf4 d4 bxc4 Nc3 e5 Ne4 exd4 g5 h6 Nf2 h5 Ng4 hxg4 Kd2 Ke7 e4 Kd6 b4 Ke5 h4 f5 g6 c5 b5 a5 g7 d5 b6 g3 b7 g2 Nh3 g1Q Qe1 c3+ Kd3 c4+ Kc2 d3+ Kb1 c2+ Kb2 c3+ Kb3 d2 Ka4 d1B Kb5 d4 Qe2 f3 Bh6 c1Q Bg5 f4 Qd3 c2 Be2 f2 Bf1 f3 Qc4 d3 Qf7 d2 Be2 f1B Bd3 f2 Qh5 Qd4 Nf4 Nh6 g8B Qg2 Qf7 Ba3 Qg6 Bb2 Rb1 Na6 Kc6 Nc5 Rh3 Ne6 Bd8 Ng4 Bb5 Bd3 Nd5 f1N Ba4 Nfe3 Ne7 Kf4 Bh7 Re8 b8B+ Qe5 Rh1 Bb7+ Kd7 Kf3 Rh2 Qh8 e5 Qf6 Bbc7 Rb8 Qf7 Rc8 Be4+ Kf2 Bd5 Bh7 Bb8 Rc3 Bbc7 Ba3 Rb5 Qa1 Bc6 c1Q Qg6 Ng7 e6 Bc2 Rh1 d1B Bh2 Bb2 Re1 Ba6 Ba8 Bb7 Rf1+ Ke2 Rf4 Qg5 Rfb4 Kf3 Rb3 Bd5 Rb7 Qcd2 R3b5 Nh5 Qg7 Qdf2 Qd4 Nf4 Qb6 Rf8 Qa7 Rf5 Ke8 Re5 Nf5 Re4 e7 Qb1 Kd7 Qa1 e8Q Ne6 Qg6 Qh3 Ke8 Qhg2 Ne7 Qh1 Rc7 Rb4 Kd7 Ke2 Bf4 Qhf1 Rc8 Bh1 Rc7 Re4 Ke8 Q1g2 Bh2 Kf3 Rcb7
bb1r1R1R/3BNKn1/qrR1r2k/pQNPr2p/1r3R1P/q2p3n/6Q1/1r6 b - - 0 1 legal: proof: d4 b5 c4 d5 a4 bxa4 g4 dxc4 g5 e5 d5 f6 Be3 fxg5 Bc5 g4 Bd4 exd4 Kd2 Kf7 b4 Kg6 h4 c5 e4 a5 f4 h5 f5+ Kh6 b5 g5 f6 d3 Ke3 a3 e5 a2 Ke4 g3 e6 g2 Kf5 g4 f7 c3 b6 c4 b7 c2 Qe2 c1R Qe4 g3 Qd4 c3 Qc4 c2 Nc3 Qd6 Nb5 Ra6 Qc3 Rb6 Qb4 Nf6 Qc4 Ng4 Qb3 Nd7 b8Q Rb1 e7 c1Q e8R Qca3 Qc4 Nf2 Nc7 Nf6+ Ne6 R1b4 Qc2 Bb7 Nf3 g1R Rc1 a1R Nc5 g2 Ne5 Ba8 Ng6 Nh3 Ne7 Rab1 Rd8 Bg7 Rg8 Ne8 f8R Be5 Be2 Bh2 Bg4 Re1 Rf1 g1R Rf4 Re6 Qg2 Rge1 Qb7 R1e3 Qa6 Qc6 Qb5 Qb7 Rfc4 Bd6 Rf4 Qa6 Rc3 R6e4 Rc4 Ng7+ Kf6 Bb8+ Kf7 Re5 Bd7 R3e4 Nb7 Ree6 Rc6 Re5 Nc5 Rg5 Rfc8 Nf5 Rg7 Re8 Rg8 Ng7 Rd8 Re5 Rdc8 Bd6 R8c7 Reb8 Rcc8 Bc7 Rce8 Rd8 Ref8 Bb8 Rh8#
b4K2/3RQnn1/1N1pP1rR/b1q4R/2nP2pr/1p2R1b1/1bQ1pb2/2k2BB1 b - - 0 1 illegal: No proof kernel
1r2R1rn/1B1Kb1NB/2R3q1/nR4rp/P1N1n2n/1p6/1Pq1b1kB/2r2n1R b - - 0 1 illegal: No proof kernel
1b2qn1n/1RPrk2q/4r3/2bnQb2/Q2Q4/QK1P3p/B1Rp1N2/1b2R2n b - - 0 1 legal: proof: f4 b5 h4 c5 a4 e5 axb5 exf4 Rh2 g5 Rh1 gxh4 d3 c4 Bd2 c3 Kf2 cxd2 c4 d5 c5 Qa5 Na3 Qd8 Nc4 dxc4 e4 a5 Ke2 h5 b4 f5 g4 a4 c6 c3 e5 a3 b6 a2 g5 f3+ Ke3 h3 g6 f4+ Ke4 h4 b7 f2 g7 c2 e6 c1Q b5 h2 b6 f3 e7 h3 Ke5 Ra7 Qb3 Nd7+ Kd4 Nh6 g8R Nf7 b8Q Rh6 b7 Re6 Qb6 Nh8 Bg2 f1N Qe5 f2 b8Q Ne3 Rb1 f1B Qbd6 Nd5 Nf3 Be2 Qa3 Bd1 Ng5 Bc2 Kc4 a1B Re1 h1N Ne4 Qd1 Qg1 Qh5 Qgd4 Qh7 Rb7 Bb1 Kb3 Kf7 Rg5 Qe8 Nf2 Bc3 Rh5 Bb4 Rg5 Bd6 Rg8 Bb8 c7 Raa6 Rg6 Rad6 Be4 Bh6 Rgg1 Be3 Rc1 Nf8 Rge1 Rd7 Rc2 Nb6 Bc6 Nd5 Bb5 Bg5 Bc4 Be3 Qda7 Bd4 Q7a4 Bc5 Qe3 Qd8 e8Q+ Kf6 Qh5 Qe8 Qd4+ Ke7 Qhe5 Rd8 Qee4 Re5 Kb2 Bf5 Ba2 Re6 Qee5 Rd7 Kb3
3rN2K/Qp1B3p/2p1Qr2/1rr4q/3P3R/1q1b1RR1/krnn3P/2Qb3Q b - - 0 1 legal: proof: d4 a5 b4 axb4 c4 d5 e3 dxc4 d5 g6 Ne2 Bg7 Ng1 Bd4 exd4 g5 f4 f6 f5 Be6 Nd2 Bd7 Ndf3 Bc8 Bf4 gxf4 Ne5 fxe5 Ke2 Kf7 Kf3 b3 Kg4 b2 Kh5 b1Q g4 c6 a4 f3 a5 f2 g5 c3 a6 e4 a7 e5 f6 e3 d6 Ke6 f7 Kd5 f8R e4 d7 c2 g6 c1R g7 e2 Qc2 e1R Qb2 e3 Bh3 Kc4 Bf1+ e2 Rf3 Qe8+ Kg5 Nf6 Kh6 Rf8 d8Q Ne4 Raa3 Bg4 Bh3 f1B g8Q+ Qf7 Qdg5 Nd2 Qa1 Qb3 Rf4 Rb1 Nf3 Rb2 Nh4 Rc1 Rg1 e1R Rg3 Bd3 Nf5 Na6 Ng7 Nb4 Ne8 Rd8 a8Q Re5 Qa7 Bd1 Rh4 Nc2 Bd7 Rb5 Qf4 Qd5 Kg7 Rf6 Kh8 Kb4 Qb1 Qh5 Qe4 Na1 Qe1 Rcc5 Qh1 Nc2 Qe6 Qa4 Rc3 Qb3 Qb8 Ka3 Qc1 Ka2 Rf3 B3e2 Rg3 Bc4 Rcf3 Bd3 Qa7+
3R2b1/br1P2rk/2n2K2/1p1rn2q/BP1RB3/1b1B1Q2/1bn2B1q/Q1r1R3 b - - 0 1 legal: proof: f4 a5 h4 g5 b4 gxh4 c4 d5 cxd5 e5 Rh3 exf4 Rh1 a4 a3 Qf6 Nc3 Qg6 Nb5 Qg5 Nd4 Qd8 Nb3 axb3 Nh3 Ra4 Ng5 Bd7 Ne4 Bc8 Nc3 Ra8 Na2 bxa2 Kf2 h5 Kf3 b5 Ke4 c5 g4 f5+ Ke5 Kf7 e4 Kg6 d4 h3 d6 c4 d5 c3 a4 f3 a5 c2 d7 h4 d6 f2 g5 f4 a6 f3 a7 h2 Qd2 h3 Qd1 Rh7 Ba3 c1R Qa4 Qe8+ Kf4 Nc6 d8Q Ne5 Qb6 Ne7 Qaa6 N7c6 Qbb7 Rg7 Bb2 Kh7 Bd4 Qh5 Bd3 f1B Bf2 Rb8 a8B Be6 d7 Bg8 Kf5 Bc5 Qa4 Be2 Rd1 Ba7 Rd2 Rc5 Re1 a1B Qd1 Bb2 Qa1 h1Q Rdd1 Nc4+ e5 h2 Rd2 Rd5 Rdd1 Rd6 e6 N4e5 e7 Rd5 e8R Qg2 Rc8 h1R Rd8 Qgh2 Rd2 Na5 Qc6 Bd1 Qf6 Bb3 Qf8 Rd6 Bae4 Rb7 Qf7 Nac6 Rdd1 Qh6 Qh5 Rd5 g6+ Kh8 Qh3 Qh5+ Kf6 Bc1 Bc4 Qh7 Bd4 f2 Bf5 f1N Bf2 Ba2 Re3 Qh5 Qf3 Rh7 Rd4 Bb2 Bc2 Re7 Ba4 Bb3 g7+ Kh7 Bd3+ Ng6 Re2 Ne3 Be4 Rc1 Re1 Be6 Bd3 Nc2 g8B+ Kh8 Bh7+ Bg8 Re5 Rg7 Re1 Nge5 Bhe4 Qh6+ Kf5 Kh7 Bc4 Q6h4 Bcd3 Qh5+ Kf6+
3qnb1r/bB4rP/RB2r2N/1Q2q1rb/3N3P/k2q2n1/r4n1P/3nR1KB b - - 0 1 illegal: Other
r1n2bq1/B1R1Qkr1/1b6/4p2K/1Rpr1N2/q2n1P1b/2P2N1P/qr1BB2b b - - 0 1 illegal: No possible last move
bB3Kb1/pNQ1Qp1P/PrPb3N/4R3/1k2n3/b2r1nr1/4r2Q/Q2n3q b - - 0 1 legal: proof: b4 c5 g4 e5 f4 exf4 c4 h5 a4 d5 Bh3 dxc4 bxc5 g6 g5 f3 Bg4 hxg4 Ra3 Bd7 Rd3 Be6 Rd5 Bc8 Rf5 gxf5 Kf2 f4 Kf1 Rh6 Ke1 Rh8 Kf2 Kd7 h4 Kc6 e4 b5 d4 c3 a5 b4 h5 Kb5 a6 b3 h6 b2 c6 c2 e5 Qd7 e6 Kb4 g6 Nf6 d5 Bd6 e7 Bb7 g7 Re8 Na3 b1B g8Q Qc8 Qh8 Nbd7 Bb2 c1B Ne2 Rb8 Nc4 Bh7 Na5 Ba8 Nd4 Ne5 Nf5 Rb6 Re1 Bg8 Nb7 Qe6 Bd4 Ba3 Qa1 Rd8 e8Q g3+ Kf1 g2+ Kf2 g1R Qe7 Re8 h7 Rg7 Nh6 Qh3 Bb2 Rg1 Qg7 Rd8 Qg2 Qh1 Qh2 Rg3 Qc7 Ng6 Bd4 Nh4 Re5 Re8 Rg5 Re3 Be5 Rd3 Rf5 Be7 d6 Bf8 d7 Bd6 Qf1 Ne4+ Ke1 f2+ Ke2 Kb3 d8Q Kb4 Qa1 f1N Qde7 Ne3 Rh5 Nf3 Rg5 Rc3 Rh5 Rc2+ Kd3 Nd1 Rg5 Re2 Rf5 Ne1+ Kd4 f3 Kd5 f2 Bf4 f1R Re5 Rff2 Qcd7 Rf1 Qg5 Be7 Re6 Nf3 Bb8 Nb2 Re5 Rb1 Qc7 Nd1 Qgh4 Bc5 Qg5 Rb3 Qgh4 Bd4 Qf6 Rd3 Qfh4 Neg5 Kd6 Ne4+ Ke7 Bc5+ Ke8 Bd6 Qhe7 Kb3 Kf8 Kc4 Qg1 Kb4 Qh2
3K4/n5p1/2q1k2N/p2pN1Q1/3BQPP1/n1nQrQ1p/3Pb2r/rB1nn3 b - - 1 2 legal: proof: e4 b5 b4 f5 a4 fxe4 c3 bxa4 b5 e6 Ra3 Bb4 cxb4 h6 Rg3 h5 Rg4 hxg4 h4 Qg5 Rh3 gxh3 g4 Qd8 Ke2 Kf7 Ke3 a5 Kd4 d5 Ke5 c5 f4 e3 b6 c4 b5 c3 h5 a3 b7 a2 b6 a1R h6 c2 h7 e2 Nf3 e1N Qe2 Qc7+ Kd4 Qc6 Ke5 Nf6 Na3 Re8 h8Q Ne4 Qd3 Nc3 Qhh7 Nd1 Bb2 c1N Nd4 Nc2 Nf5 Na2 Bd4 Nac3 Nc4 Na3 Nh6+ Ke7 Qf3 Ra7 Bd3 Ra6 Bb1 Ra7 Bf2 Ra8 Kd4 e5+ Kd3 Qb5 Be3 e4+ Kd4 Na4 Ke5 Nac3 Bg1 Bf5 Qg6 e3 Qh7 Bd3 Qf5 Ne4 Qg5+ Kd7+ Kf5 Nc6 b8Q e2 b7 e1N Qe5 Na7 b8Q Qc6 Bd4 Re7 Qb5 Rae8 Qb3 Bf1 Qbd3 Nec3 Qef6 Re6 Qfg6 Re2 Qh7 R8e3 Ne5+ Kd6 Kg6 Rf2 Kf7 Rh2 Qhe4 Be2 Kf8 Qc5 Ke8 Ke6 Kd8 Qb5 Kc7 Qc6+ Kd8
1bQ2b2/1K1Nr3/2p5/1kPQpb2/N2QP3/1q1bR3/1nnN2P1/nq1N1bn1 b - - 0 1 legal: proof: c4 d5 e4 f5 b4 a5 a4 axb4 c5 f4 Bb2 Kf7 Bd4 Ke8 Ra3 Kf7 Rc3 Ke8 Rc4 dxc4 Be3 fxe3 f4 g6 f5 Nc6 f6 Nh6 Be2 Ng8 Bg4 Nb8 h4 b5 Bf5 gxf5 f7+ Kd7 Qc2 Ra6 Qb3 Rg6 Qd1 Rg5 hxg5 Ba6 Nf3 Bb7 Ng1 Bc8 Ke2 Kc6 Kf3 h5 d4 b3 a5 h4 g6 e2 a6 e1N+ Kf4 h3 Ke5 c3 g7 b2 a7 f4 a8N b4 d5+ Kb5 d6 h2 Kd5 b3 d7 c6+ Ke6 c2 Ke5 c1B Qd5 f3 Kd4 f2 Nf3 f1B Nfd2 Nf6 g8Q Ne8 Rg1 h1N Ke5 Nf2 Qg7 Nd6 Rh1 Rh7 Qh8 Qb6 d8N Nc2 Qg7 Bf5 Rh6 Nh3 Re6 Ng1 Rh6 Na6 Ne6 Nab4 Rh3 Na1 Re3 Nbc2 Qh8 Qb8 Nb6 Rg7 Na4 Rh7 Nc4 Rg7 Nbd2 b1Q Ncb2 Rh7 Nd1 b2 Nf4 e6 Nd3 Nc4+ Kf6 Qg3 Ne5 Rg7 Nd7 Qf3 Re1 Qb3 Re3 Rh7 Nf3 Bd2 Qg7 Be1 Nd2 Bg3 Qh8 Bb8 Qg7 Bfd6 f8Q e5 Qc8 Bf8 Kf7 Be7 Ke8 Bf8 Qg6 Re7+ Kd8 Q1a2 Qgf7 b1B Qd4 Nb2 Qfd5 Ne1 Qc7 Bbd3 Kc8 Qb1 Kb7 Nec2 Qc8
8/1p1r1np1/2nNr1np/1bb1n3/pP1N1b1Q/PPk5/4qrP1/1RB1N1BK b - - 0 3 illegal: Other
1NbB2r1/3nbBq1/PP4RR/B7/1NK4n/3nqn1p/1rP2nkP/2n1qr2 b - - 0 1 illegal: No proof kernel
1rB1bQ1N/4b2b/4n1b1/1r1r3k/1bRn1qq1/2B2Rr1/1KbNN3/1BQ1RQ2 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 c5 d4 cxd4 Ra4 e5 Ra1 exf4 Kd2 d5 b4 f5 e4 Kf7 g4 Kg6 c4 a5 Kc2 h5 c5 d3+ Kb2 h3 g5 h4 b6 a4 e5 a3+ Ka2 h2 c6 f3 c7 h3 e6 d4 b5 f2 e7 d2 e8N f4 b7 d3 b6 f3 Bg2 f1Q Qa4 d1B Nf6 f2 Bf4 d2 Qd4 Nh6 Nd5 Bd7 c8R Rg8 Ne2 Nf5 Qb2 Na6 b8Q Nc5 b7 Bc2 Q2e5 d1R Rc6+ Ne6 Qd4 Qc8 Nd2 Kh5 g6 Be8 g7 Be7 Qc7 Rb8 Qd3 Nfd4 Be5 Bb4 Rg1 h1B Ne7 h2 Bh3 Be4 Ng6 h1R Nh8 B4g6 Rg3 Rg1 Re3 Rg3 Rc4 Rg5 Bf6 Rb5 Rf3 Be7 Rb1 Qd7 Ka1 a2 Qf4 Bb4 Kb2 Bh7 Qc3 Bcg6 Qc1 a1B+ Ka2 Bac3 Ra1 Bd6 Bf5 Bcb4 Bb1 Be7 Kb2 Nc5 Be5 Qg4 Qf8 Nce6 Qf4 Nc2 Bc3 Ncd4 Qf7 Qfg2 Qf6 f1B Qf8 Qf2 Qf7 Rd8 b8Q Qe3 Qbf4 Rdb8 Q4f5+ Qeg5 Qf8 Qf4 Qh3+ Qgh4 Qh1 Bh3 Qg2 Bhf5 Qf1 Qhg4 Qf6 Rf8 g8B Bc2 Qg7 Rff5 Qf8 Rg5 Bf7 Ng7 Bd5 Nge6 Bb7 Rgd5 Bc8 Re1 Qg2 Rg1 Qgf1 Rg3 Qcd1 Ng5 Ba2 Bef7 Rc1 Nge6 Bb1 Be8 Qde1 Bb3 Qd1 Ba4 Qc2 Bb3 Re1 Ba4 Qd1 Bac2 Qc1
1NKb4/b2N2B1/6N1/qB5r/R4Qq1/nN1q1rnR/4rNRb/kb1Q2qq b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 Kf2 Ke7 h4 Kd6 c4 Ke5 e4 f5 b4 a5 c5 d5 h5 g5 b6 g3+ Kf3 g4+ Kg2 a4 b5 a3 b7 a2 b6 d3 c6 Kd4 e5 d2 e6 Be7 h6 Nd7 b8R Ne5 b7 Nf6 c7 Ne4 h7 Nc4 Rh3 f3+ Kh1 f4 Qe2 d1Q Nc3 f2 Kg2 f3+ Kh1 g2+ Kh2 Qe1 Rh5 g3+ Kh3 Ra7 Rb1 a1B Kg4 Ra2 Kf5 Na3 Nh3 g1B Rb6 g2 Ra6 Bh2 Bh6 Qd7 Bf8 g1Q Qc2 Qh1 Bg7+ Bf6 Bc4 f1Q Ra4 f2 Qb3 Qfg1 Nb5+ Kc5 Qe3+ Bad4 Qf4 f1R Rg5 Bd8 Rg2 Qa5 Be2 Re8 h8N Qd6 Ng6 Rh8 Bc4 Qd7 Bd3 Re2 Bc4 Be3 Ke5 Rh4 e7 Qg4 e8N d4 Nf6 Bf5 Rc8 d3 b8N d2 Bd3 Rf3 Nf2 d1Q Bc4 Rh5 Bd3 Be7 Rh8 Rg5 Rh3 Rh5 Bc4 Ng3 c8Q+ Kb6 Bd3 Bd8 Qd7 Kc5 Bc4 Qb3 Qd1 Bc2+ Qf5 Bb1 Ke6+ Kb6 Kd7 Qd3+ Kc8 Bc5 Nc6 Ka6 Nd7 Ba7 Nde5 Kb6 Nbd4 Kc5 Bb5 Kd5 Nb8 Kc5 Nc2 Kd5 Nb4+ Kd4 Nc2+ Kc3 Nd4 Kb2 Ned7 Ka2 Qf4 Ka1 Nb3+
2QK2n1/n2N2R1/3B2qb/r1Rqpk2/3R2B1/1rb1RbQ1/q1n1nQq1/R3N3 b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 Nd2 g5 Nb1 gxh4 Ke2 Kf7 g4 Kg6 b4 h5 f4 a5 c4 d5 c5 e5 f5+ Kf6 g5+ Ke7 f6+ Ke6 g6 h3 c6 a4 c7 a3 b6 h2 b7 d3+ Ke3 a2 f7 h4 g7 h3 b5 d2 b6 Rh7 Qf3 d1Q Nd2 Qc2 Qg3 Ra5 Ngf3 Qf6 Nc4 Kf5 Ne1 Qg6 Ba3 Nc6 b8Q Bb7 c8R Na7 Rc5 Bc6 Rd1 a1B b7 Qa2 Rd4 Bc3 Nb6 Rh6 Rg1 h1Q Nd7 h2 Be2 Rh3 Bh5 Qhg2 Qc8 h1N b8R Ba8 Rb3 Bc6 Nf3 Ba8 Ra1 Bc6 Qh2 Ng3 Ne1 Ne2+ Qg3 Bb2 Kd2 e3+ Kd3 Bc3 Bb4 Ne7 g8R Bh6 Rg7 Ng8 Rb5 Bb7 Bd6 Ba8 Rc5 Bb7 Rdb4 d4 Kc4 d3 Ra4 d2 f8Q+ Ke6 Rb4 d1Q Qff2 Bf3 Ra4 Bb2 Kb4 Qd5 Rd3 Kf5 Raa3 Ng1 Rd4 e2 Re3 Qb7+ Rb5 Bc3+ Kc5 Qe4 Kb6 Qed5 Nc2 e1N Kc7 Ne2 Kd8 Qb1 Rc5 Qba2 Nb4 Nc2 Nd3 Rh4 Ne1 Re4 Rdd1 Rb4 Rd4 Rb3 Bg4+
Nq2nq2/q2Npn2/5r2/1B1N2rr/1n4k1/B1RQ1R1N/2rbbn2/K1B3QN b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 Nd2 g5 Nb1 gxh4 Kd2 Kf7 g4 Kf6 f4 d5 b4 a5 c4 h5 Kc2 a4 Kb2 d3 b6 a3+ Ka2 d2 f5 Kg5 f6 d4 b7 d3 c5 h3 b5 h2 c6 e3 c7 h4 b6 e2 f7 e1N Qc2 h3 Qc6 Ra6 Qe8 Nf6 Qd7 Bh6 f8N Ne8 Ng6 Rg8 Ne2 Nc2 Ng3 Nc6 b8B Ne5 b7 Nf7 Nc3 Rf6 Nf4 d1N Ncd5 d2 Bb5 Nf2 Rf1 d1Q Nh1 Nb4+ Kb1 Kh4 g5 Qf3 g6 a2+ Kb2 Qg3 g7 Kg5 Qd6 Bg4 c8N Be2 Ncb6 Kg4 Na8 Qf3 Ba7 Qb8 Bc5 Bg5 Rb1 a1R Qd8 Raa6 Ra1 Rac6 Ra3 Rc8 Bd6 Rc2+ Ka1 Qe3 Rc3 Qea7+ Ba3 Bh6 Bc5 Bg5 Be3 Bh6 Bc1 Bg5 Ng3 h1R Qd6 h2 Nh3 Bd2 Qa6 Rg1 Nh1 Rh8 Qd6 Rh5 g8Q+ Kh4 Qg6 Rgg5 Qc5 Kg4 Qd3 Ne4 Rf3 Nf2 Ng3 h1Q Qce3 Qc8 b8N Qh2 Nd7 Qd8 Nh1 Qhb8 Nab6 Ned6 Na8 Qf8 Qc5 Ne8 Qce3 Bd1 Qe1 Be2 Qg1+
3BQ2b/1B3nNQ/2Q1N1bR/R3qr2/1b5k/3rp3/r2BQrQp/2Kbn2r b - - 0 1 illegal: No possible last move
Rr2bbnK/2N2Q1p/NRp5/3B1q2/7R/nrR1b2p/n3kBrB/4QrR1 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 dxc4 Qa4 e5 Qd1 exf4 Kf2 Kd7 Kf3 Ke6 Kg4 Ke5+ Kh5 Kd4 b4 a5 g4 f5 e4 a4 e5 c6 e6 a3 g5 c3 e7 c2 e8R a2 g6 f3 g7 f2 b6 f4 b5 f3 b7 Ne7 Kh6 Qc7 b6 Qe5 Bc4 f1N Nh3 f2 Nc3 Qh2 Ng5 Rg8 Bd5 Kd3 Nb5 Qd6+ Ne6 Ra3 Nc7 Ra7 Na6 Qg3 Qe1 Qh3 Nec7 Qf5 Ba3 c1B Bc5 Ne3 Rh3 Ng6 Re4 f1R Rg3 h3 Rh4 Ra8 Rb1 Nd7 b8B a1R b7 Ra3 Rb6 Nf6 Rg1 Nc4 Bf2 Nf4 Rb3+ Kc2 d4 Bd7 Rd3 Rb3 Rc3+ Kb2 Be6 Be3 d5 Na3 d6 Be8 d7 Be7 d8R Bf8 Bd5 Nd3+ Rg5 Nc1 Rc8 Rh8 Rd8 Na2 Rc8 Bfc5 g8Q Ra7 Qf8 Ng8+ Kg7 Be7 Rg1 Bb4 Rd3 Kc2 Qf7 Bbc5 Ne6 Ra8 Bh2 Rb8 Nec7 Bd6 Qb4 Be7 Rc3+ Kd2 Qe4 Ke2 Qe5 Ra8 b8R Bc5 Rbb4 Rb8 Rb6 Kd2 Qd6 Nf6 Rhc4 Ke2 Be4 Rb7 Ra8 Rb8 Bh1 Rf8 Rh4 Bb4 Qfd5 Rf7+ Kh8 Rg7 Qf7 Ng8 Be4 Rg2 Qh6 Bec5 Qc1 Be3 Bd5 Bf8 Qe1+
1Kb3B1/2Q2q1N/2Br1pnn/4b3/r1Rp2k1/Rnqn4/BrNB1BQp/2R5 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 c5 d4 cxd4 Ra4 e5 Ra1 exf4 Kd2 Ke7 Kd3 Ke6 Ke4 h5 b4 a5 g4 d6 c4 h3 b6 f6 g5 h2 b5 d3 c5 h4 c6 f3 g6 f2 b7 d2 g7 a4 b6 h3 c7 a3 Qc2 d1Q Nf3 a2 Ng5+ Ke7 Na3 Qd7 Bd2 Nh6 Kd5 Qe1 g8B Nc6 b8B Ra4 e4 Ne5 b7 Ng6 Bc4 f1R e5 Rf2 e6 Qc1 Qe4 Qc3 Rhc1 h1N Qg2 h2 Ba7 Qe8 b8Q Qf7 Kc6 d5 Bae3 d4 Nh7 Re2 Kb6 Nf2 Nc2 Nd3 Bf2 Kd6 e7 Ke5 e8B Kf5 Qa7 Bd6 Bc6 Re6 Qa5+ Be5 Ka7 Rd6 B4d5 Qc4 Kb8 Qc3 Rab1 a1N Ba2 Nb3 Ra1 Bb7 c8R Ba6 Ba8 Bb7 Rc4 Bc8 Bg3 Kg4 Qc7 Qd5 Bc6 Qe6 Bf7 Re8 Bg8 Qf7 Bb1 Ree6 Ra3 Re7 Ba2 Red7 Ba8 Rb6+ Bb7 Rdd6 Bf2+ Bg3 Rc5 Na1 Qe7 Rb2 Rc4 Nb3 Qd8 Kh4 Bc6 Kg4 Qf1 Bf4 Qc7 Be5 Qg2+
1RQ5/NR1b1qb1/b1Q1r2b/1BKR2q1/3r3k/NR1rr1b1/1Bn1N1B1/n3r3 b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 Kd2 Ke7 Kd3 Kf6 Kc4 Kg5 e4 f5 b4 a5 b6 d5+ Kb5 d3 c4 g3 e5 g2 c5 a4 c6 a3 h3 a2 e6 d4 e7 d2 e8B f3 b7 f4 c7 d3 Qc2 d1R Kc4 f2 b5 d2 b6 f3 Qh7 Nh6 Bh5 Ra6 Bg4 Nc6 b8N Nb4 b7 Re6 Bd3 f1Q Nd7 f2 b8R Kh4 Ba3 g5 Ne5 Bd7 c8R Nc2 Qf7 Nf5 Bc1 Nfd4 Bf3 g4 Nc6 g3 Ne2 g1B Na7 g2 Na3 Bh6 Rb3 Qg5 Rab1 a1B Qe8 Bh2 Bb2 g1R Rcb8 Bg3 Bg2 Rf8 Qc8 Rf3 Qc6 Rfe3 R3b7 Nb3 Rh2 Kh5 h4 Re1 Rh1 d1R Rh3 Kg4 h5 Rd2 Rd1 Rh1 Bc1 Bag7 Bb2 Nba1 Bde4 Rdd6 Rd5 Rd1 Kc5 Rd4 Bd3 Rg1 Bb5 Rdd3 Re5 R6d4 Rf5 Qb1 Rd5 Re1 Rg8 f1B Rgb8 Bf4 Rg3+ Kh4 Rf3 Qa2 Rg3 Bge5 Rf3 Bhg7 h6 Bg3 h7 Bh6 h8Q Bg7 Qd8 R6e4 Rdf5 Qf7 Qdc8 Re6 Rd5 Rdd1 Ng1 Bc4 Ne2 R1d3 Ba4 Ba6 Bb5 B3e5 Rg3 Bc7 Rf3 Bg3 Qh8 Rb3 Rf6 R3e4 Qhc8 R4e5 Rf3 Ree4 Rc3 Re3 Rc4 Rbd3 Rb4 Bh2 Rb3 Bf4 Rc7 Bg3 Rcb7
B4Nb1/4nR1k/1b1q1b2/pqR1bNQ1/n4N1r/5N1B/r2Q1BnK/1b1bQ3 b - - 0 1 illegal: No possible last move, all moves rejected
1nrR4/2BR1R2/2n1bn2/1NqQBn1B/KR2n3/2b1Q3/k2b3r/2nBbN1b b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 Kd2 Ke7 e4 Kd6 c4 Kc5 Kc2 Kb4 h4 d5 b6 g5 e5 f5 b7 a5 b3 a4 h5 a3 h6 g3 e6 g4 c5 d3+ Kd2 g2 e7 f3 e8B g3 h7 d4 c6 f2 c7 f4 Bb5 a2 Ne2 g1B Rh2 f3 Bd7 g2 Bb2 Bh6+ Nf4 Qg5 Rh5 Ne7 Bc6 Be6 c8Q Qc5 Bd7 Nec6 Be2 f1B Qe8 Bf2 Na3 g1N Nb5 Bg2 Rf5 Bh1 Rf7 Bh4 Bc8 f2 Bh5 Ne2 Rb1 a1B Rd7 Bf8 Ng2 Nc1 Ne3 Bh6 Qf3 Bf4 Qd5 f1N+ Kd1 Ng3 Nf1 d2 Qe7 Bf5 Qe3 Ne4 Rf7 Bh3 Bcg4 Be1 Bf3 Rc8 h8R Ra2 Rd8 Be6 Rdd7 Nf6 Bfg4 Qb6 Kc2 d1N Be2 Nf2 Bef3 N2e4 Bd1 Ka5 b4+ Ka4 Qg1 Bfd2 Qe3 Na6 b8B Qc7 Ba7 Nab8 Bb6 Qa7 Bc7 Qc5+ Qc4 Ra3 Bc3 Bb2 Qd5 Ra2 Nd6 Ka3 b5 Re8 b6 Rc8 b7 Ba1+ Rb2 d3+ Kb1 Qb5 Be5 Qc5 Rb4 Bac3 Qg3 Bh6 Qf4 Rh2 Qe3 d2 Kc2 Bf4 Qdd3 Ka2 Nb5 Na6 b8R Bg5 Rb7 Nab8 Rd8 Bh6 Bde2 d1N Rfd7 Ndf2 Bd1 Ng3 Rf7 Nf5 Qd5+ Nb3 Qee4 Bhd2 Qe3 N2e4 Rfd7 Ka1 Rf7 Nc1 Rfd7 Ne2 Kb3 Nc1+ Ka4 Nh7 Rf7 Nhf6 Bb6 Ng5 Rbd7 Nge4 Bb3 Kb2 Bbc7 Kb1 Bbd1+ Ka1 Qdd4 Ka2 Qd5+
1N2R1q1/5rQB/Rb1n2r1/rr1n4/R5RN/n2kb1QQ/2R2R2/3q1qbK b - - 0 1 legal: proof: f4 c5 a4 e5 d4 cxd4 g4 b5 axb5 exf4 Ra6 f3 Ra3 Qb6 Ra1 Qd8 Kd2 f5 Ra2 h6 Ra5 Bb7 Ke1 Be4 Bg5 f4 Ra1 Bf5 gxf5 hxg5 Kf2 Kf7 b4 Kf6 e4 Ke5 h4 a5 c4 d5 h5 g4 c5 g5 c6 d3 h6 Kd4 c7 g3+ Ke1 g2 Kf2 a4 c8R d2 h7 a3 b6 a2 e5 g4 b5 Ne7 b7 Bh6 f6 Na6 b8R Nc5 f7 Rg8 f8R Rg6 h8Q Nb7 b6 Ra5 Qg7 Nd6 Qb3 d1R Na3 Rb1 b7 Bg5 Rf7 Qg8 e6+ Ke4 Bc4 d4 Nc2 d3 Nb4 d2 Rh4 d1Q Ra8 Nd5 b8Q Bd8 Na6 Bb6+ Rc5 Rb2+ Be2 Rb1 Qa3 Rbb5 Rf6 Kd4 e7 Ke4 e8R+ Kd4 Rb1 a1N Bd3 Nc2 Qb3 Na3 Rb2 Rg5 Bh7 Rg6 Qa4+ Kd3 Qb3+ Nc3 Qe6 Nd5 Qbc7 Qb3 Nb8 g3+ Ke1 Qc2 Rg4 Qa4 Rcc2 f2+ Kd1 Qd4 Nf3 g1B Nh4 g2 Rb4 f3 Ra6 Nf4 Ra4 f1R+ Qe1 Nd5 Qcd7 Be3 Rf5 Rf2 Rf7 Re2 Qg3 Rf2 Ke1 g1B Rff4 Rd2 Kf1 f2 Kg2 f1Q+ Kh1 Rf2 Rff8 Rf7 Qf5+ Qe4+ Qff3 Qd4 Qh3 Qda1 Qf2 Qad1 Qfg3 Rc7 Rf6 Rf7 Rff2
1b1K1Q2/nRRQ1rN1/1r1Q2N1/1Q2b1R1/2N1nn1b/N4b2/q3n1Q1/4rbk1 b - - 0 1 illegal: No possible last move, all moves rejected
1qb1bB2/1r3Nb1/1R1n2kN/Qn1n1B2/1R6/Nqrp3K/1RPB1qQ1/1q1r4 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 c5 d4 cxd4 Ra4 e5 Ra1 exf4 Kf2 h5 g4 a5 Kg2 f5 e4 Kf7 b4 d5 b6 f3+ Kh2 d3 b7 f2 b5 d2 g5 f4 e5 d4 b6 h3 e6+ Kg6 e7 f3 e8N h4 Nc7 a4 Ra3 d3 Rc3 a3 Na6 a2 Na3 a1Q Rc5 Qc3 Rc4 Bg7 Nc5 Ne7 Nb3 Nbc6 b8R Rh7 b7 Nf5 Nd4 Qb3 Qe1 d1R Be2 f1Q Bd2 f2 Bg4 Nd6 Rb4 Na7 Ngf3 Nab5 Nf5 Ra6 Nh6 Rc6 Qe5 Rc3 Qc5 Qe1 Qa7 Qe3 Qa5 Qeb6 Re1 Qf6 Re6 f1N+ Kh1 h2 Kg2 h1B+ Kh3 Qd5 Rb2 Qb3 Re4 Qf4 Ra4 Qf2 Rb4 Na7 Rb6 Ne3 Rb4 Nd5 Rb6 Bd4 Rb4 Nab5 Ne5+ Kg7 Nef7 Kg6 Ra8 Bf3 b8B Bg7 Ra6 Be4 Bc7 Bef5 Rb6 Bfd7 Bd8 Be8 Bc7 Qfc4 Bd8 Qc7 Be7 Qb8 Bf8 Qf6 Kg2 h3+ Kg3 h2 Kh3 Qd4 Be6 Kh5 g6 Qf2 Bd7 Bf6 g7 Kg6 g8Q+ Bg7 Be6 h1Q+ Kg4 Qe4+ Kh3 Qec4 Bd7 Qa2 Be6 Qb1 Bg4 Qb3 Qh8 Bd4 Qe5 Rg7 Qh2 Bf6 Qg2 Be5 Ng5 Rb7 Ngf7 Bg7 Bf5+
2Nq3k/1nQ1B3/r3b1p1/6p1/pn1p1bqq/Kn1R1QQ1/B2N2PB/nN1R4 b - - 0 1 illegal: No proof kernel
BNr2nqQ/1N2R2r/5rP1/2r4N/2b1nb1b/2N1nr1n/1K1BBnk1/R6N b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 c5 d4 cxd4 Ra4 e5 Ra1 exf4 Kd2 Ke7 b4 Kd6 e4 Ke5 g4 d5 c4 h5 Kc2 f5 g5 a5 g6 f3 b6 f4 c5 a4 c6 h3 c7 h4 b5 h2 b7 h3 b6 a3 Ne2 f2 Qd3 a2 Kb3 f3 Bg2 f1R Ng1 f2 Qb5 d3 Qd7 d4 Qc6 d2 Qa4 Kf4 e5 Kg3 e6 d1R e7 d3 e8B d2 Kb2 Bh6 Bb5 Rh7 Na3 Bf4 Qa7 Nd7 b8N Ba6 c8N Ngf6 b7 Qg8 Nf3 Ne4 Nd6 Nf8 Rg1 h1N Nd4 h2 Be2 Bc4 Nd7 Rc8 b8N Rde1 Nab5 d1N+ Kc2 Ne3+ Kb2 Rd1 Bd2 Rc1 Nf6 Rc3 Re1 a1B+ Kb1 Bb2 Qa1 Ba3 Nb7 Be7 Kb2 Rc5 Ng4 Bh4 Ne6 Rc8 Qa8 Rc5 Ra1 Rfc1 Rd1 f1R Re1 Nhf2 Ng7 Nh3 Nf2 h1N Nh5+ Kh2 Bgf3 Rd3 Nc3 Kg1 Bg4 Kg2 Be6 Rd6 Bd5 Rf6 Bc6 Ng3 Nh1 Rf3 Qa5 Nef2 Qd8 Nge4 Qd4 Re6 Qh8 Rd6 Na5 Rf6 Ba8 Rc8 Nb7 Bd3 Nb5 R1c5 Nc3 Bc4 Ra6 Bc7 Re6 Bd6 Re7 Bf4 Ra1
1rBq1bB1/bn2N1N1/1p1n1k1N/rP1bNrbq/b2Rp3/N2B1RQ1/4K3/8 b - - 0 1 legal: proof: e4 a5 c4 g5 h4 gxh4 b4 f5 b5 fxe4 Ba3 d5 Bb4 axb4 cxd5 Bd7 Qb3 Bh3 Qd1 Bc8 a4 Kf7 g4 e5 f4 c5 d4 h5 d6 b3 f5 c4 d5 b2 g5 c3 f6 c2 a5 c1B a6 e3 d7 e2 a7 h3 d6 h2 Kf2 e1B+ Ke2 e4 Qd3 h4 Ra3 h3 Qg3 Na6 Rf3 Ne7 Na3 b1B g6+ Ke6 f7 Bf2 g7 Bg5 g8B Nc5 Rb3 Bd4 Nf3 Bc2 Ne5 Kf6 Rf3+ Nf5 Rg1 Rb8 a8B h1R Rg2 h2 Rgf2 b6 Bb7 Ba4 Rd3 Bb2 Rd4 Rh5 Rf3 Bbc1 Ba6 Bcf4 Bb7 Rg1 Ba6 h1Q Bb7 Qe7 d8N Be6 d7 Nd6 Ndc6 Qd8 Bc8 Ncb7 Ne7 Ba2 N7c6 Bd5 Ne7 Bg7 f8N Rg2+ Ke1 Ra2 Ne6 Bf8 Ng7 Qe8 d8N Nf7 Qh3 Bab3 Rd1 Bh6 Bh7 Ra8 N5g6 Rf5 Nb1 R2a5 Na3 Bhg5 Rd4 Bb8 Ne5 Ba7 Qg3 Ba4 Bg8 Qh5 Bd3 Rb8 Ke2 Nfd6 Ndf7 Qd8 Nh6
bN2Rr2/3K3b/qp2Q1Br/nN2B3/np1PB2R/1qk3qR/qb2B1b1/3B4 b - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 c4 gxh4 f5 d5 cxd5 e6 Qb3 exf5 Qd1 f4 Kf2 Ke7 Kf3 Kf6 Ke4 h5 g4 c5 a4 b6 d3 h3 d6 f3 Kd5 h2 e4 f2 d7 h4 a5 h3 a6 c4 a7 c3 Ba3 c2 Ne2 c1Q Qe1 Qf4 Nbc3 Na6 Kc6 Ke5 g5 f5 g6 Nc5 g7 Qg3 Qd2 f4 Rb1 f3 Nd4 Na4 Be2 f1B Qe1 f2 Rb3 Bg2 Bb2 f1Q Ncb5 Qdf6+ Kc7 Qe6 d8R Rh6 Re8 Ne7 g8B Nc6 Rc3 Rb8 a8B Na5 Ra3 Bg7 Nc6+ Kf4 e5 Ke3 Ba1 Qa2 Bb3 Bf5 Bbd1 Bh7 Kd7 Rc8 e6 Bb2 e7 Qff3 Rg8 Rf8 Nb8 Qff7 Be4 Qfb3 Nc7 Kd4 e8B Rff6 B8g6 Rf8 Qf2+ Kc3 Qf5 Nc4 Qe6 Na5 Re1 h1B Rh8 h2 Nb5+ Kd2 Bef5 Ba8 Be4 Bg2 Rh1 Qc4 Re1 h1Q Rc3 Qf1 Rb3 Bc1 Be5 Bb2 d4 Qff3 Rc3 Qfd3 Rh1 Qcb3 Rh4 Qdc4 Nc7 Qa6 Nb5 Qf2 Rch3 Qfg3 Nc7 Kc3 Rg8 Rf2 Re8 Rf8 Nb5+
B1q1b1rn/2B1N2q/N2R1Bpq/n5bR/2kP2p1/1r1q2qN/KN2p1N1/1Q6 b - - 0 1 legal: proof: e4 b5 c4 f5 g4 fxe4 a4 d5 axb5 dxc4 Ne2 h5 Ng1 hxg4 h4 Kd7 f4 Kd6 b4 Kd5 b6 e5 d3 a5 Kd2 c5 Kc3 g6 Kb2 c3+ Kb3 c2 f5 c4+ Ka2 c3 b7 e3 f6 e4 h5 e2 b5 e1Q h6 a4 f7 a3 h7 e3 b6 e2 Nh3 Bh6 f8N Bg5 Nd2 Nh6 Nc4 Rg8 h8B Nf7 Bf6 Qg3 Bf4 c1Q Ne6 c2 Bc7 Nh8 Nb2 Nc6 b8N Na5 b7 Bd7 Nc6 Be8 b8N Qe7 d4 Qh7 Na6 Rb8 Qd3 Rb3 Rh2 Qcf4 Bg2+ Qff3 Rf1 c1Q Qb1 Qe4 Rf3 Qd3 Bh1 Qc5 Bg2 Qf8 Bh1 Qfh6 Nef4+ Ke4 Ng2 Kd5 Na4 Kc4 Ne7 Qf5 Re3 Qc8 Re6 Qd3 Rd6 Qg3 Nhf4 Qd3 Rh5 Qg3 Ka1 a2 Nh3 Re3 Kb2 a1Q+ Kc1 Qa3+ Kc2 Qc5 Kb2 Q5f5 Ka2 Rb3 Nb2+ Kc3 Ngf4 Qb5 Ba8 Qbd3 Na4+ Kc4 Ng2 Qde3 Qc1+ Qc3 Qb1 Qcd3 Nb2+
3N4/RNbk4/b2BpnNK/qQ3N2/1Pr3R1/qBR1p3/r1rn3B/b6q b - - 0 1 legal: proof: c4 b5 a3 d5 cxd5 b4 axb4 f5 h4 g5 e4 gxh4 b3 fxe4 Ne2 a5 Ng1 a4 Ba3 axb3 Bb2 Ra2 Bc1 Ra8 Ke2 c5 Ke3 h5 Kf4 h3 Kg5 e3 d4 h4 g4 h2 f4 b2 d6 h3 d7+ Kf7 d5 Nh6 d6 Ke6 Nc3 b1R Nb5 Nc6 Nf3 Nd4 Qe2 Nb3 Nh4 Ng8 Ng6 Rh6 Ra7 Rb2 Bg2 Qc7 d8N+ Kd7 f5 Nf6 Nd4 Rc2 Bd5 Nd2 Nb7 Rh4 Bb3 Qa5 Bb2 e6 Rc1 h1Q Qb5+ Qc6 Bc3 h2 Ba1 Rc4 Rc3 h1Q Bb2 Rh2 Ba1 Nh5 f6 Re2 f7 Nf6 Bb2 Qha1 Nf5 Q1a3 Ba1 Be7 f8B Bd8 Kh6 Bc7 g5 Rf2 Nd8 Ba6 Nb7 Re2 Rc1 Rc8 Be5 Rc2 Bf4 c4 Bh2 Ra2 Rc3 Rf2 Rd3 c3 Be7 c2 Rc3 c1B Bf8 Ke8 Be7 Bb2 d7+ Kf7 d8N+ Ke8 Bed6 Kd7 Nge7 Ba1 g6 Rf4 g7 Rd4 g8R Rc4 Qe5 Qh1 Rg4 Bb6 Qd5 R8c5 Ng6 Bc7 Rd3 Rcc2 Rc3 Rc4 Qb5+
2bBnKQ1/3RR2R/r7/1n2p1bp/Pk1r1Nr1/bB1rB1N1/5N2/n1rqN3 b - - 0 1 legal: proof: e4 a5 c4 g5 h4 gxh4 b4 axb4 e5 d5 cxd5 f6 Nc3 fxe5 Nb1 e4 Ke2 Kd7 Ke3 Kd6 Kd4 b5 a4 e3 g4 h6 f4 e2 f5 e1N f6 b3 g5 b2 g6 h3 g7 b4 f7 b3 Nc3 b1R Qg4 b2 Bc4 h2 Bb3 Na6 Nf3 Nf6 g8N Ne8 Nf6 Rg8 Nd1 c5+ Ke4 c4 d4 c3 Be3 c2 Nh5 c1B Ng3 e6 Nf2 Nc2 Ne1 Nac7 Ra2 Be7 f8N Bg5 Ng6 Nb5 Nf4 Ra6 Ra3 Na1 Ra2 Kd7 d6 Kc6 Ke5 Kb6 d7 Ka5 d5 Kb4 d6 h5 Rg1 h1R Ra3 Qc7 d8B Qc2 d7 Rh4 Ra2 Qd1 Rg2 Be7 Qg7 Bd2 Qf7 Rg6 Qg8 Rc1 Rg1 b1R Rc2 Ned6 Rc7 Rgg4 Rb7 Bf8 Kf6 Ne8+ Kf7 e5 Rc7 Be7 Ra7 Bg5 Kf8 Rc3 Rb7 Rbc1 N2h3 R1c2 Nh1 Bc1 Bc7 Rgg2 d8R Rgd2 Rg3 Bf6 Rg7 Bg5 Rh7 Rg4 Ng3 Rd4 Nf2 Ba3 Rd5 Rc1 Bd8 Rcd3 Rbe7 Na7 Rd6 Nb5 Rdd7
r5N1/1bq1bBB1/b1R1Nq2/2r1n1b1/K2R3b/2N1k1pq/QRP4p/R1n1B3 b - - 0 1 illegal: No proof kernel
Nb5N/2p2B1K/2n1R3/Q1B1RBb1/1Pq1r3/bnN2p1n/N1bk1q2/R2br3 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 dxc4 Qa4 e5 Qd1 exf4 Kf2 Kd7 Kf3 Kd6 Ke4 Kc5 d4+ Kb4 g4 h5 d5 f5+ Ke5 a5 e4 c3 b6 f3 b3 f4 b7 c2 d6 a4 g5 f2 d7 a3 Kf5 h3 Kg6 h2 e5 a2 e6 h4 e7 h3 e8N Na6 b8N Rh4 Nc3 Ne7+ Kf7 Nc5 g6 Nc6 Kg8 Qf6 d8R Bf5 Bg2 f1Q g7 Qc4+ Rd5 Be7 Rb1 a1B Be3 c1B Qh5 Ba3 Nd7 Bc2 Nge2 Qf5 Rb2 Bg5 Nb6 Qf6 Rf1 h1B Be4 h2 Bf5 Bf3 Kh7 h1N g8B Nf2 Nd6 Nh3 Nf7 Re8 Nc1 Bfd1 Na8 f3 Bf2 Rhe4 Nh8 Qfd4 Bf7 R8e7 Bg1 Qf2 Re5 Re1 Ra2 B1b2 Ra1 Re4 Nb1 Bd4 Re1 Re8 Nd2 Kc3 b4 Nb3 Na2+ Kd3 Nb1 Ba7 Nbc3 Kd2 Re6 Rd4 R1e5 Bb8 Qh6 Rf4 Qf8 Re4 Qc5 Re1 Qa5 Qff1 Bc5 Qf2 Rg6 Re7 Re3 Re4 Re6 Rf4 R3e5 Rd4 B5g6 Rde4 Bf5
2q3RR/1b5r/B1n1bNq1/kBp1B1N1/8/1qP1np1q/BR3b2/KQb2q1N b - - 0 1 legal: proof: e4 b5 h4 d5 g4 dxe4 f4 g5 h5 a5 b4 gxf4 g5 axb4 Nh3 Ra6 Ng1 Rg6 hxg6 Bf5 Bd3 Bh3 Bf1 Bc8 d4 Kd7 Kd2 Kc6 a4 Kb6 d5 h5 d6 e5 c3 f5 Kc2 c5 Kb2 b3 d7 f3 g7 h4 g6 b4 Qc2 f4 Rh3 e3 Ra2 e4 Na3 e2 Qd3 e1Q Qc2 f2 Rh2 e3 Ra1 e2 Nf3 h3 Ng5 Ne7 g8B Nbc6 g7 Ka5 Nb5 Nf5 Nd6 Ne3 Ra2 Rh7 Qb1 f3 Ka1 Bb7 Rb2 Qd1 Be6 e1B g8N Qc8 d8R Bh6 Bb5 f1Q Nde4 Bf2 Ngf6 Qd6 Rh1 h2 Ng3 Qd5 Rg1 h1Q Rh8 Qhh3 Nh1 Qe4 Bec4 Qc2 Ba6 Qg6 Bcb5 Nf5 Bf4 Ne3 Rd2 b2+ Ka2 Qgf5 Be5 Qg6 Rg2 Bf8 Rd8 Bh6 Rdg8 b3+ Ka3 Nb8 Qc2 b1Q Nf7 b2 Qc1 Bf4 Ng5 Bh4 Re2 Qbc2 Ka2 b1B+ Ka1 Ba2 Qb1 Ng4 Rg2 Kb6 a5+ Ka7 Ng3 Be6 Rf2 Nc6 Nh1 Qb3 Rb2 Bf2 Bc4 Qbc2 Ba2 Bc1 Bb5 Qb3 a6 Kb6 a7 Ka5 a8B Ba6 Bb7 Ne3 Be2 Nd4 Bc6 Bb7 Ba4 Nc6 Ba6 Qf7 B4b5 Qfh5 Ba4 Qg6 B4b5
4n1Nn/4qB2/2Kp1p1n/R2B2rN/QB2r1R1/pbB1RN2/1b3Pn1/b5kn b - - 0 1 legal: proof: d4 b5 b4 c5 g4 h5 a4 hxg4 d5 cxb4 axb5 e6 Nh3 exd5 Ng1 d4 Kd2 Ke7 Kd3 Kf6 Kc4 Ke5 h4 Ke4 e3 g5 c3 a5 b6 a4 Kb5 d6 b7 b3 h5 b2 c4 g3 h6 a3 c5 g2 h7 d3 c6 g4 c7 d2 Nf3 g1B Rh2 g3 Nd4 g2 Ne6 Nh6 Qb3 Kf3 Qc2 d1N e4 Ra4 e5 Qe7 Nd8 Rg8 h8B Na6 b8R Be6 c8B Nc7+ Kc6 Ne8 Rb3+ Ne3 Bc4 Rg5 Bd2 Bg7 Rh5 Bh2 Bb4 g1N Bb7 Kg2 Nd2 b1N Nf3 Nc3 Rd1 Ne4 Rd4 Ng3 Rg4 Ne2 Rc3 Bc8 e6 Nf4 Rd3 Ba1 Bhc3 f6 Nf7 Kf1 Bb3 Neg2 Re3 Nh1 Ba8 Qd8 e7 Ng6 Bd5 Be5 Qb3 Nc7 e8N Qe7 Ng7 Ne8 Bb7 Be6 Ba8 Ra5 Qa4 Nh8 Ba2 Bb3 Bb7 Ng8 Nh6 Bd4 Ba8 Rae5 Bb7 Re4 Ba8 Rg6 Ra5 Rg5 Nh5 Be5 Bd2 Beb2 Bdc3 Bc2 Bf7 Bb3 Nf5 Nh6 Bb7 Qe6 Ne7 Qe5 Ng8 Qe7 Kb6 Bc1 Bbd5 Bcb2 Ne1 Kg1 Kb5 Qe6 Kc6 Qe7 Nf3+
n5QB/3nN1q1/K1pBR3/Bp1r4/rQP3n1/3bR2b/1q2BN1B/2n3kb b - - 0 1 legal: proof: g4 b5 d4 e5 b4 h5 a4 hxg4 a5 f5 e4 fxe4 dxe5 Bc5 Be3 Bb6 axb6 a5 Bc1 axb4 Kd2 Kf7 c4 Ke6 f4 Kf5 h4 d5 h5 g5 b7 d4 e6 g3 h6 c6 h7 e3+ Kd3 b3 e7 b2 e8Q e2 Nd2 Kg4 f5 b1B+ Qc2 e1N+ Ke2 d3+ Ke3 g2 f6 Kg3 f7 g4 f8B Nf6 Ndf3 d2 Bh6 d1B Nh2 Ra4 Qd2 Nfd7 Kd4 Bd3 Nhf3 Nb6+ Kc5 Na8 Bf8 Qf6 Nd4 Nf3 Bd6+ Ne5 Qb4 Kf2 Nf5 g3 Ra3 Ng4 Be2 Qb2 Ne7 Bcf5 Qc8 Rd8 h8B Bfe4 Rh6 Bf3 Rc3 Nd7+ Kd4 B1c2 b8B Bf5 Rg6 Bcd3 Bd2 Bf3e4 Re6 Bd5 Nf3 g1N Ng5 Bh1 Nh3+ Kg2 Nf2 Kh2 Re5 g2 Bbc7 Ngf6 Ba5 Bh3 Be3 Ng4 Re6+ Nde5 Kc5 Rd7 Bd1 Ne2 Bf4+ Kg1 Qg8 Nc1 Bf3 Kf1 Bh2 g1Q Bg3 Qg2 Be2+ Kg1 Bf4 Qf3 Bg3 Qf8 Rb3 Qg7 Ra3 Nc7 Kb6 Na8+ Ka6 Rd8 Rc3 Nd7 Bge5 Rf8 Bf4 Rf5 Bg3 Rd5 Rb3 Bh7 Rbe3 Bd3 Bh2+
1Q2N1K1/1B4p1/1P1n4/1Q1Q2Rq/1n3NQr/pp2Br2/kb2bnrp/1Q3nR1 b - - 0 1 illegal: No proof kernel
n1rkn3/1KN5/3q4/BQ1NN1n1/1R1NnR2/2rBn2b/P1r2b1n/1R3Qqb b - - 0 1 legal: proof: f4 a5 h4 g5 b4 axb4 c4 gxh4 f5 d5 cxd5 e6 Qb3 exf5 Qd1 f4 Kf2 b5 Kf3 f5 e4 h5 d4 c5 g4 h3 g5 b3 e5 h4 g6 h2 e6 b4 e7 h3 g7 b2 d6 c4 d5 c3 Nd2 b1N Bb5+ Nd7 Ne2 b3 Ba3 b2 Rf1 h1N Nc4 c2 Qd4 c1R Ng3 h2 Ne3 Nd2+ Kg2 b1Q Qc4 Nf2 Ne2 Rc3 Nd4 Nf6 g8Q Nde4 Kf3 h1B+ Qg2 Rh2 Bb4 Nh3 Ba5 Qe1 Ba6 Nb6 Qb5+ Bd7 Rd1 Rac8 Rb1 Na8 Rf2 Qg1 Rff1 Kf7 e8N Be7 Nc7 Ne8 Rb4 Bh4 Rfb1 Be6 d7 Bf2 d6 Nhg5+ Ke2 Qf6 d8R Qe5 d7 Ke7 Qf1 Qd6 Qb8 Rg2 Bd3 Rh2 Qb5 f3+ Kd1 f4 Ned5+ Kf7 Qc6 Bh3 Qb5 Be3 Ke1 f2+ Ke2 Kf8 Nc6 Ba7 Nd4 f3+ Ke3 Qg6 Nf6 Ke7 Kf4 Bb6 Ke5 Rg2 Kd5 Bc5 Qc1 f1N Kc6 f2 Kb7 Ne3 Qe1 f1N Nfd5+ Kf8 Qd1 Qd6 Qe2 Kf7 Qd1 Nh2 Qf1+ N8f6 Rh8 Rgc2 Rh4 Kf8 d8N Bb6 Qd1 Ne8 Nf7 Bc5 Ne5 Ba7 Nf4 Ke7 Nfd5+ Kd8 Rf4 Nf5 Nb3 Bf2 Qf1 Ne3 Nd4
3bRN2/1Q3K1N/r1Bp3Q/nn1k3P/3q3n/2QqnNrb/3B1q2/b1n3RN b - - 0 1 illegal: No possible last move, all moves rejected
1n3bB1/1q1B1b2/nbn1R3/3pb2n/r2P2kr/1KN2NR1/BQR3B1/Qrq5 b - - 0 1 legal: proof: f4 a5 b4 axb4 g4 c5 g5 e5 fxe5 c4 g6 c3 Bb2 cxb2 Nc3 hxg6 Nb1 g5 Bg2 g4 Bh3 Qg5 Bf1 Qd8 h4 Ke7 a4 Ke6 c4 Kf5 e6 g5 c5 d5 e7 b5 e8Q g3 a5 g4 h5 g2 a6 g3 a7 b3 c6 b4 h6 Qc7 h7 Be6 Nc3 b1R Rh2 b2 Ra6 b3 Nf3 g1B e4+ Kg4 e5 f5 Bc4 Bb6 d4 g2 Kd2 Qb7 c7 g1B c8B f4 Qb5 Ne7 Kd3 Be3 Rc2 Nec6 Qc1 Bf2 Qa4 Bg3 Qa1 Qd7 Qd2 Bf7 e6 Qb7 e7+ Kh5 Ne1 f3 e8B f2 Nf3 f1N Bh3 Be5 Bg2 Ng3 Qe2 Kg4 Bd7+ Kf4 Be6 Nh5 Kd2 Rh1 Qf2 b1Q Kd3 b2 Ba2 Qc1 Qe2 Rg8 h8R b1N Rh7 Rh8 Rh6 Ng3 Rh3 Nh5 Qf2 Nd2 Qe2 Be8 Bg8 Ne4 Qf2 Kg4 Qd2 Qb1 Qc1 Bf7 Qcb2 Nc5+ Kd2 Bd8 Rb6 Nca6 Kd3 Na5 Re6 Bb6 Kd2 Nac6 Kd3 Nd7 Kd2 Qc1+ Kd3 Rd8 a8B Ndb8 Rh2 Rc8 Nd2 Nd8 Nce4 Rc4 Nd6 Qc8 Nf3 Qe1 Bb7 Ng7 Bc6 Qb7 Rh3 Rh4 Bd7 Ra4 Ne4 Qg1 Kc3 Nh5 Kb3 Ndc6 Nc3 Qe3 Rh2 Rb1 Rh3 Qc1 Rg3+
rknRb1r1/4p2q/1Nr1R1Rn/2pK4/1r4Q1/4q3/NQ2PNrB/Nq2b2B b - - 0 1 legal: proof: g4 d5 h4 b5 c4 dxc4 a4 f6 g5 fxg5 axb5 gxh4 Qb3 h3 Qc2 Kf7 Qd1 Ke8 f4 Kd7 Kf2 g5 Ke3 a5 Kd4 h5 b4 h2 f5 c3 f6 c2 b6 a4 b7 a3 b5 g4 f7 g3 b6 g2 Kd5 a2 d4 h4 Na3 h3 Bf4 c1R Qa4+ Rc6 Nc2 Bh6 f8Q Bg5 Qg7 Bh4 Rd1 Be1 Na1 Qf8 Qb3 Qf6 Qb2 Nh6 Qg4+ Kd8 Bg3 Nd7 b8N Qf4 b7 Qe3 Na6 Rg8 b8N Bb7 Bd6 Kc8 Nb4 Ba6 Rd3 Bb5 Ra3 Kb7 Ra6 Ba4 Nf3 g1R Bg2 Kc8 Nd2 Kb7 Be4 Rg2 Rg1 h1R Bh2 Kc8 Bf3 Kb7 Ne4 Nb6+ Ke5 Nc8 d5 Bb5 Nd7 Ba4 Nb6 Kb8 d6 Bb5 Bg3 h2 d7 Ba4 d8R Bb5 Nac2 a1Q Kd5 Qb1 Na1 Ba4 Nf2 Bb5 Rf1 Rhg1 Bf4 h1Q Na2 Qh5+ Be5 Qhf5 Be4 Qh7 Bf4 Rh1 Rg1 Rh4 Bh2 Ba4 Bf3 Bb5 Qg6 Rb4 Qg4 Rg3 Bh1 Rg2 Na4 Rcc4 Re6 Be8 Nb6 Rc6 Rg6 Bd2 Rc1 Be1 Rc4 Re6 Rf4 c5 Re4+ Rd6+ Ke5 Rc6 Kd5+ Ka7 Re5 Kb8 Ree6+
1K1R4/NB3q2/qbpQk3/1pbr2p1/rn6/1NP1B1N1/QbqQ2R1/N2n2n1 b - - 0 1 legal: proof: g4 a5 e4 g5 b4 axb4 h4 d5 h5 dxe4 Na3 Bf5 Nb1 Bg6 hxg6 f5 Rh3 fxg4 Rh6 Ra5 Rh1 Ra8 Ke2 Kd7 Ke3 b5 Kd4 e5+ Kd5 h5 a4 e3 d4 e2 f4 e1B a5 g3 f5 h4 c3 g2 a6 e4 a7 b3 g7 h3 f6 e3 f7 h2 Nf3 g1N Nbd2 b2 Bg2 b1Q Nb3 e2 Qd2 Bf2 Ne1 Qf6 Nc2 e1B Ra2 Bg3 Nca1 Ba3 f8Q Nh6 g8N Ng4 Ne7 Qc2 Nf5 Bgd6 Ng3 Na6 Bf3 Rd8 a8Q Bdc5 Qa7 Bb2 Qd6+ Kc8 Kc6 Rh4 d5 Bef2 Bg2 Ne3 Be4 Rd7 Bg2 Kd8 Kb7 Nb4 Kb8 Nd1 Be4 Qf7 Bf3 Ne2 Rg1 h1Q Rg2 Ng1 Ra4 Nd3 Rd4 Nb4 Qa2 Rf4 Be4 Qh6 Qe5 Nd3 d6 Bca3 Bb7 Be3 Rd5 Ra4 Qe2 Bd4 Be3 Ba7+ Ka8 B3c5 Qd2 Nb4 Qf6+ Ke8 Rd4 Kf8 Qd8+ Kg7 Qb8 Rd8 d7 Qa6 Rd3 Kf6 Rd5 Re8 d8N Re5 Nc6 Ke6 Rd8 Bab6+ Na7 c6 Qc7 Rf5 Kb8 Rd5 Qd6+
B2bR3/pp1r2Nr/PNp4n/k2r1bB1/4p3/K2NQ3/pn1B2Bq/2nRN3 b - - 0 1 illegal: Other
1qr1n1k1/2NB2N1/b1q1N1bP/2b2pR1/2q2r2/2Rp1N1r/Q6N/R3qQ1K b - - 0 1 legal: proof: f4 e5 g4 b5 a4 c5 axb5 f5 d4 cxd4 g5 Nc6 Be3 Nb4 Bd2 Nd5 Be3 Ndf6 gxf6 h6 Bf2 exf4 Bh4 Rb8 Bg5 hxg5 Qc1 Ra8 Qd2 Bc5 Qd1 Bf8 Kf2 Kf7 Kg2 d5 e4 a5 h4 g4 c4 g5 b4 d3 h5 d4 b6 g3 c5 d2 e5 a4 c6 g4 b5 a3 h6 a2 c7 Ba6 c8R Bc5 Rh5 f3+ Kh1 f2 b7 d3 Bg2 f1R b8Q Rf3 Qf1 d1B b6 Qd5 b7 Qc6 Nd2 Be2 Rd1 a1Q Qa7 Qa2 Ra1 Qc4 Rg5 Re3 Rc7+ Kf8 f7 Nf6 b8N Ne8 e6 Rg8 Bd5 g2+ Kh2 Re4 Ndf3 Rf4 Be4 Qb6 Bb7 Qc6 Bc8 Rg7 Bd7 g3+ Kh3 Bd1 Nh2 Bh5 Ngf3 g1Q Rc8 Qgd4 Kg2 Bg6 Kh1 Qdd6 Rc7 Bb7 Na6 Rc8 Nb8 Qe5 Qa2 Qb2 Na6 Qb1 Nb4 Ba6 Nd5 Qbb6 Nc3 Qb8 Nb5 Ke7 f8N Kf6 e7 Kf7 Ne6 Kg8 Qff2 g2+ Kg1 Nd6 e8N Re7 N8g7 Ne8 Nd8 Re2 Nde6 Re3 Qf1 Ba3 Kf2 Bc5 Kg3 g1Q+ Kh3 Qcb6 Rc6 Qf2 Nbc7 Qe1 Kg2 Q6b7 Kh1 Q7a8 Nh4 Rh3 Nf3 Qab7 Rb6 Q7a8 Rb3 Qc6 Rc3
2KnQ1Q1/NB1n2N1/1BQr2R1/b1n1B2r/1p1n1qbn/2QP1b2/2B1k2q/8 b - - 0 1 legal: proof: f4 a5 b4 axb4 c4 d5 cxd5 h5 e4 g5 a4 Bh6 g4 Bf8 Ra3 f6 Rg3 f5 exf5 gxf4 g5 Bg7 Rg2 Bf8 Rg4 hxg4 Ke2 Kf7 Kd3 c5 Kc4 e5 Kb5 g3 h4 f3 a5 b3 f6 Kg6 a6 Kh5 d6 Kg4 g6 g2 h5 b2 g7 c4 f7 c3 d7 e4 a7 c2 h6 e3 h7 e2 Qe1 f2 Rh2 Bb4 f8B Ba5 Nf3 g1N Bd6 Qc7 d8Q Nc6 Qf8 Nf6 Qe8 Nd8 Be5 Nd7 Nd4 Nf3 Nf5 Nh4 g8Q+ Kf3 Nc3 b1B Rg2 b6 Bb2 c1N Ng7 Nb3 Qc1 e1N Bd3 f1Q Rg6 Nbc5 Ba3 Qf2 Bc2 Qh2 d3 Ba2 Bb2 Bd5 Bd4 Rb8 a8B Qcf4 Bb7 Ra8 Be5 Kf2 Ba3 Nef3 Qh1 Ra6 Bc1 Ng1 Be3+ Ke1 Qe4 Ne2 Qc4 Bf3 Qcd5 Nde6 Kc6 Nd8+ Kc7 Nd4 Nb5 Ke2 Na7 b5+ Rb6 Nf6 Qdc6 Bcg4 Kb8 Nfd7+ Kc8 b4 Qge6 Rg8 h8Q Rf8 Qc4 Rf6 Qhg8 Rd6 Qc3 Rh6 Qc7 Rh5 Rg6 Rd6 Qc6 Rf6 Bc7 Rd6 Bb6 Qf5 Bf4+ Qe4 Be5 Qe3 Qh7 Qef4 Qhg8
BrQ3nN/qn2q3/2Q1pp1q/3b4/1r1p1QQ1/5B1P/1RBB1k1b/1r2N2K b - - 0 1 legal: proof: f4 b5 b4 h5 a4 c5 axb5 h4 e4 h3 e5 e6 d4 cxd4 gxh3 Ke7 h4 Ke8 f5 Ke7 h5 exf5 e6 Kd6 e7 f4 Ra6+ Kc7 Re6 dxe6 Ne2 Kd6 Ng1 Kd7 Kf2 Kd6 Kg2 Kd5 e8B Ke4 c4 a5 h6 g5 c5 g4 c6 a4 h3 f6 c7 g3 h7 a3 b6 a2 b5 a1Q b7 Ba3 b6 Qd5 Nc3+ Kf5+ Ne4 Ke5 Bc6 Qd7 Bd2 Ra4 Ng5 Rb4 Bf3 Nc6 b8Q Nd8 b7 Qe7 Rh2 Bc1 Bd3 Qa7 Bc2 Ba3 Be2 f3+ Kh1 f2 Qa8 f1Q b8Q Qf4 Qc6 Bb7 Bf3 Ba8 Qc8 Nb7 Qe2+ Qe3 Nf7+ Kf4 Qd1 Rb3 Qb8 Bd6 c8B Rb4 Bd7 Nh6 Qbc7 Rb8 h8Q Ng8 Qc8 Be5 Qh5 Bc7 Nh8 Be5 Qf1 Bd6 Be1 Qd2 Qg4+ Ke3 Bg6 Qc1 Rb2 Bc7 Bc3 Qd2 Qc1 Kf2 Bc2 Qh6 Qcf4 Be5 Bd2 Bd6 Ne2 Bc7 Nc1 g2+ Kh2 g1R Nd3+ Kf1 Ne1 Kf2 Ng2 Ra1 Ne1 Rb1 Kh1 Be5 Qfe4 Bh2 Qef4 Nc5 Q6c7 Bd5 Bc6 Nb7 Qb6 Na5 Ba8 Nb7 Qbc6
1KBN1R2/2Q1p1nk/1R2pq2/p1B4B/bnb1Q1r1/2RR4/2r1q2P/b3Bq2 b - - 0 1 legal: proof: c4 d5 cxd5 b5 a4 Bg4 axb5 Bh5 e4 Bg4 e5 Bc8 e6 fxe6 f4 g5 g4 h6 Nc3 gxf4 Ne4 h5 g5 Kf7 Nf2 Ke8 Ng4 hxg4 Ke2 Kf7 Kd3 Kg6 Kc4 a5 Kc5 g3 b4 c6 d4 f3 d6 f2 d7 g2 b6 Nf6 b5 Qe8 d8Q Bb7 d5 Kh7 g6+ Kg7 d6 Rh5+ Qd5 Qf7 d7 Rh7 Nh3 g1Q Ng5 Ne8 Be3 Qg3 Qe4 Qff3 Nf7 Qfg2 Ra3 Q3h3 Rd3 Ba6 b7 Qh4 Kb6 c5 Qc7 c4 d8R c3 Bc5 Nc6 b8R c2 Be2 Bb7 Rc1 f1B Bh5 Kg8 g7 Qf6 Rdc8 Qd2 Nd8 Nb4 Rb1 c1Q Rbb3 Qfg5 Rbc3 Bc6 Rb7 Rb8 Ka7 Qf6 Rb6 Qe2 Bf3 Rb7+ Ka8 Ra7+ Kb8 Rh4 Bg2 Rg4 Bh1 Rg6 Bg2 Kh7 g8B+ Kh6 Bh7 Rg4 Bg6 Ng7 Bh5 Qcd1 Ra6 Qc1 b6 Ba4 b7 Qcf4 Rb6 Ra6 Rb5 Rc6 Rb6 Qff3 Ka7 Q3f5 b8B Kh7 Bh1 Ne8 Ka8 Bg7 Ba7 Bh8 Kb8 Ng7 Bf2 Rc4 Be1 Rc6 Qc4 Rc5 Bb7 Rc6 Qe4 Rc4 Rb3 Rc2 Rbc3 Qd1 Rd7 Rgg2 Re3 Rg4 Nc6 Qc3 Ra6 Bc4 Rf8 Ne8 Bc8 Qe2 Nd8 Bf6 Rdd6 Ng7 Bc5 Qe5 Rd7 Qf4 Rad6 Qff1 Rb6 Ba1 Rc3 Qg6 Rdd3 Qgf5 Qec6 Qf6 Qe4+
3b4/n1n1QK2/1p1Bpp2/1R4PB/b1bBq2R/2Rn3b/B1BQ3Q/4k1rr b - - 0 1 legal: proof: d4 a5 b4 axb4 e4 f5 exf5 c5 dxc5 e6 f6 Bd6 f7+ Ke7 f8B+ Ke8 f4 h6 g4 Qe7 f5 Qf7 f6 Kd8 Nh3 Kc7 Nd2 Kc6 Ng5 Qe8 f7 Qe7 Nde4 Qd8 Nf6 gxf6 Nh3 h5 g5 Ra6 Nf2 Ra8 Ng4 hxg4 Ke2 Kb5 c4+ Ka5 a4 b3 h4 Kb4 c6 Kc3 a5 b2 c7 b1B a6 b6 a7 g3 Kf3 g2 Kg4 g1N h5 Nc6 c5 Ba6 c8R Ne2 h6 Bf5+ Kh5 Ncd4 h7 Qc7 c6 Bh3 Kg6 Qb7 c7 Be7 Rb1 d5 Rb5 Nc6 Be3 Bd8 Bd6 d4 f8Q d3 Kf7 d2 Qe7 Nf4 Bc4 Nd3 Qe2 d1B Ba2 Ba4 Qf2 Bf5 Rh4 Bh3 Qf4 Kc2 Bd4 Kd1 Qh2 Ke1 Qf4 Rb8 a8B Na7 Qh2 Qh1 Bf3 Ra8 Bh5 Qe4 Qd2+ Kf1 Qe8 Ne7 Qf8 Nd5 Qe7 Re8 h8Q Rg8 Qh7 Rh8 Qh2 Ke1 Qf5 Qg2 Qff4 Qe4 Qfd2+ Kf1 Rb3 Bc4 Rb5 Rh6 Rb8 Rh8 c8B Nc7 Bd7 Rh6 Qb2 Ke1 Rc8 Nc6 Be8 Ra6 Bd1 Na7 Bc2 Ra5 Kg7 Rh8 Bh5 Ra6 Kf7 Ra5 Rb4 Rf5 Rb3 Rf1 Rb5 Rg1 Qc3+ Kf1 Qb4 Na6 Qh1 Bg2 Bhd1 Bcb3 Rh7 Bd5 Rc6 Nc7 Qd2 Bdb3 Rc3 Bc4 Rh4 Rh6 Rg4 Rh2 Rh4 Bh3 Qf4+ Ke1 Bh5 Qa8 Qg2 Rhh1 Qfh2 Qe4 Qd2+
k1bBrR2/1B1rbN2/p2BN1Q1/2n3bP/p2bNR1p/2R1n3/P4b2/1K3b2 b - - 0 1 illegal: No possible last move, all moves rejected
R3Kn2/Nb2B3/2R5/1kbn2QR/3rqN1P/2Ppb2B/3qr1N1/b2b1qBq b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 Kd2 a5 Kd3 f5 Kc4 d5+ Kd3 Kd7 e4 g5 b4 f3 h4 a4 b6 Kc6 e5 a3 e6 g3 b7 f4 e7 f2 e8R a2 Nc3 g2 Be3 f3 Nce2 g4 Qd2 g3 Re5 Ne7 Nf4 Nd7 b8B Bb7 Nge2 g1B Rh5 g2 Bd6 Ra4 b5+ Kb6 Rc1 a1B Ba3 Rb4 Rh3 Ka5 b6 Kb5 Rg3 Rh6 Rg8 Re6 Rgh8 Bh6 Rg8 Nf8 Rh8 Ba6 b7 Bg5 b8N Bb7 Nd7 Re5 c3 Rc4 R8h6 Ra4 Kc2 d3+ Kb3 d4 Nb6 Nd5 Rc6 Be7 Rb1 Bc5 Nc8 Re8 Qc1 d2 Rb2 d3 Ra2 Rd4 Bb4 Qd6 Ra8 d1B+ Ka3 Qe6 Qd2 Ba7 Be7 Qe4 Qc1 Bh2 Qd2 g1Q Bh3 f1Q Ng2 f2 Nef4 Qe1 Qc1 f1Q Qd2 Qh1 Bg1 Bb6 Qe3 Qd2 Qg3 Bf3 Qg5 Bc5+ Kb3 Nb4 Ka3 Bg3 Kb3 Bf2 Ka3 Kc4 Ka4 Nd5 Ka5 Kb3 Kb5 Be3 Rd6 Bd1 Re6 Ba6+ Kc6 Ka4 Rg6 Ne6 Kd7 Kb5 Rf6 Bb7 Rfh6 Rg8 Rg6 Nf8+ Ke8 Rg7 Rc6 Rf7 Ne6 Rf2 Nef4 Re2 Na7+
B5Q1/1N2K3/B4BP1/b1N5/R1p2qqP/1rnN2r1/rb2bb1r/R1Q1b2k b - - 0 1 legal: proof: c4 b5 d4 h5 a4 e5 axb5 exd4 Ra4 d5 Ra1 dxc4 f4 g5 Qc2 g4 Qd1 Nd7 Ra2 Ndf6 Ra1 Ne4 g3 Ng5 fxg5 h4 Qd2 hxg3 Qd3 Rh7 Qd1 Rh8 Kd2 Ke7 b4 Ke6 e4 Ke5 h3 Kf4 e5 f5 e6 c5 e7 a5 e8B a4 b6 a3 b7 d3 Kc3+ d2 b8Q+ Qd6 b5 g2 g6 Kg3 b6 f4 b7 a2 Qa4 d1Q Bd3 f3 Bf7 f2 Nf3 f1R Ne5 g1B Qa6 Kg2 Ba3 g3 Qc7 Ne7 b8N Nd5+ Kb2 Rf3 Qcc6 Bf2 Nc3 Bg4 Nb5 Nc3 Nbd7 Qf6 Qcc8 Qf4 Qac6 Rb8 Be2 Be1 Nd3 Bd6 Be6 Bc7 Qg8 Ba5 Bd5 Rb6 Rf1 Kh2 Qcc8 g2 Ba8 g1B Bb4 Rh5 Ka3 Bgf2 Nd6 Rg3 Nb7 Rh4 Rg1 Bh5 Rg2+ Kh1 Bf1 Be2 Qc7 Ne4 Bc3 Rb3+ Ka4 Rh5 Bf6 c3 Qcc8 c2 h4 c1R Qc6 Rc2 Qc7 Rhg5 Qc6 Rh3 Rg4 Rh2 Qcc8 Qfd2 Rf4 Rg3 Rg4 Qf4 Qc7 Ra3+ Kb5 Rb3+ Kc6 Rd2 Kd5 Nc3+ Ke6 Rc2 Ke7 Rcb2 Rb1 a1B Rc1 Ra2 Qc6+ Qf3 Ra4 Bb2 Ra1 Qc1 Qc7 Qh6 Qf4 Qg4 Qc1 Qhf4 N3e5 Bf3 Ba6 c4 Nd3 Be2 Nd7c5
Nn1k3R/Qq3bR1/b1Q4r/pnP2KBq/Nn1P1b1N/1B2p3/b5p1/4Q3 b - - 0 1 illegal: No possible last move
Q1NbrbQ1/q4qB1/3qp2n/2RRn1Pb/q1k2rP1/2N1r3/1n6/1RK1N2B b - - 0 1 legal: proof: e4 a5 d4 g5 h4 c5 hxg5 cxd4 b4 axb4 Bc4 f5 Bf1 fxe4 Kd2 Kf7 a4 Ke6 c4 h5 f4 b5 c5 Kd5 f5 e3+ Kc2 b3+ Kb2 e2 f6 e1B f7 h4 g3 b4 a5 d3 a6 h3 c6 h2 c7 d2 a7 Rh3 Ne2 Nh6 Ra5+ Kc4 Ra2 d5 Ra4 d4 Ra1 d3 Ng1 Nd7 Ra5 Ne5 Ra4 Qd6 Ra6 Bg4 c8N e6 Nf3 Bh5 Rg1 h1R Qe2 d1Q Ne7 Re8 a8R R1h2 g4 Rf2 Nc8 Qc2+ Ka1 b2+ Ka2 Bd2 Nc3 Qa4+ Kb1 Rg3 Ne1 Re3 Ra5 Rf4 Rd5 Qa7 Ne4 Bc3 Qf2 Qa4 Bh3 d2 Qg2 d1N Raa5 Bd4 Rf1 Bb6 Nc3 Bd8 Rab5 Qa7 Qh1 Qa4 Bg2 Qa7 Kc2 b1Q+ Kd2 b3 Bb2 Qg6 Kc1 Qg7 Ba1 Nb2 Bf3 Bfe7 f8Q Qf7 Qg8 Bf8 Qg2 Na4 Qa2 Nb2 Bh1 Na4 Qg2 b2+ Kd2 b1Q Rc5+ Kb3 Rg1 Qe4 Kc1 Kb4 Qa2 Nb2 Qa6 Qc4 Qb7+ Qb5 Qa8 Qba4 Ne2 Rf6 Kb1 Nf3 Ng2 Nc4 Rc1 Rf5 Bg7 Rf4 Ne1 Nb2 Nc3 Ne5 Rcd1 Q4a5 Kc2 Qa4+ Kd2 Kb3 Rb1 Kb4 Kc1 Kb3 Ra5 Kc4 Rac5+
K1Q2RrB/1P2p1P1/1bb3qr/1rQ3qB/n2Q2n1/N5R1/N3q1b1/3qkb1R b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 Nd2 g5 Nb1 gxh4 Kd2 Kf7 g4 Kf6 f4 d5 b4 a5 c4 h5 c5 a4 c6 h3 f5 Kg5 b6 Kf4 f6 Kg3 b7 Kf2 b5 h4 f7 h2 g5 h3 b6 a3 g6 a2 c7 d3 Kc3 e3 Kd4 e2 Kc5 e1R Bg2 d2 Be4 d4 Bf5 d3 Bb2 Re5+ Kb4 Na6+ Ka4 Nc5+ Kb5 Bg7 Kc6 Rh6 b8R Na4 f8Q Rb5 b7 Nf6 Ba3 Ng4 Qg8 Bd4 Qe6 Bb6 Qe5 Qg8 Ne2 Qf7 Qc1 d1Q Bb2 d2 Nec3 Qe2 Na3 d1Q Qd6 Be6 Rf8 Bc4 c8Q Qg1 Rb1 a1Q Na2 Qgd1 Bf6 Qae5 Bh8 Qff6 g7 Qg6 Rg1 h1B+ Be4+ Qef6 Rg3 h2 Bf3 Ke1 Qc2 Bd3 Qc5 Qfg5 Kd7 Bg2 Qdd4 h1B Ra1 Ne3 Bh5 Ng4 Rb1 Ba7 Kc7 Bc6 Qcd7 Bhg2 Qdf5 Rd8 Qc8 Bb6+ Kb8 Bc4 Ka8 Re8 Rf2 Rg8 Rff3 Qed2 Rf8 Bcf1 Rbb3 Q1e2 Rh3 Qdc2 Rbg3 Qcd1 Rh1
1b1r4/3Nn1q1/Nnk3R1/2BQqrn1/R1pn2K1/2P2Q1r/2P1B1B1/qr4Nq b - - 0 1 illegal: Other
q2q1qnB/1N1Qb1P1/4p2R/kPR1Q1R1/bprqB2K/4Nr2/r7/Nqn5 b - - 0 1 illegal: No proof kernel
3n2K1/1k1rp3/b5Nb/1b3bqB/Q3nPPb/2n1p1B1/2r1Q1q1/2N1RBNR b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 Nd2 g5 Nb1 gxh4 Ke2 a5 f4 d5 g4 Kd7 b4 Kc7 c4 h5 c5 h3 c6 h2 Qe1 a4 Qg3 d3+ Ke3 d2 Kd4 d1N Ke5 a3 Ne2 h4 Qh3 d4 Ra2 d3 Qg2 h3 Bd2 e3 Nbc3 Ba6 Ke6 Ra7 Kf7 Nf6 Ng1 Ne4 Be1 d2 Qe2 Bh6 Ra1 a2 b6+ Kc8 b5 Rd7 c7 Kb7 Bf2 Nc6 Bg3 Qc8 Rc1 a1B Na2 Ndc3 Re1 d1B Nc1 Qb8 Qd2 Rc8 Qe2 Nd8+ Kg8 Ka8 b7+ Ka7 Na2 Ba4 Nc1 Qa8 b8N Kb7 b6 B4b5 Nc6 Qa7 Nf3 Qb8 Nce5 Bb2 Rg1 h1Q Ng6 Qg2 Rh1 h2 Ng1 Nd5 Qc4 Bf6 Qd4 Ndc3 Qa4 Kc6 b7 Bh4 Qc4+ Kb6 Qe2 Qa7 b8Q+ Qb7 Qa8 Qd5+ Kh8 Qg5 Qa7+ Kc6 Qd4 Kb7 Qa4 Rd2 Kg8 Rc2 Qa1 Ra8 Qa3 Ra7 c8B+ Ka8 Bf5 Rd7 Nh3 Ka7 Qa4 Kb7 Rg1 h1B Be6 Qf2 Bf7 Bf3 Rh1 Qg2 Qf2 Bfe2 Ng1 Bec4 Qf3 Be6 Qe2 Bf5 Be8 Qf6 Nh8 Qe5 Bh5 Qf6 Ng6 Qg5 Qd1 Nb1 Qd3 Nbc3 Qe2
B2brN2/2B2Q1q/rk2R1rN/1bRPK2P/6pb/3r2Q1/b1p4b/B1nR2n1 b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 exf4 Nc3 d5 Nb1 dxc4 Kf2 Kd7 d4 c5 e4 Kc7 b4 a5 h4 f5 e5 g5 e6 c3 e7 c2 e8Q g3+ Kf3 c4 h5 a4 Rh4 g4+ Kg2 c3 Qe4 a3 Ra2 f3+ Kh1 f2 Kg2 f4 Qd2 Rh6 Qee1 Qd7 Nf3 Nc6 Ne5 Nge7 Bb2 c1B Ng6 c2 Nc3 Na5 Ne2 Nd5 Rh1 Nb3 Ba1 Be7 Nf8 Nc3 b6+ Kc6 b7 Bh4 b8B Kb6 b5 Rg6 Qdd1 Qh7 Bd6 Be6 Qd3 Bd5+ Qf3 Re8 Rg1 Bc4 d5 Bd2 Nd4 Nc1 Nf5 N3e2 Nh6 Ba5 Rb2 a2 Rb1 Nb3 Rd1 Nbc1 Rh1 Ng1 Bd3 Kb7 b6 f1R Be2 Ka6 b7 Bad8 b8R Bb5 Rc8 Kb6 Qec3 Re1 Bf1 R1e3 Rc5 Rd3 Qf6 Bc4 Qf7 Bb3 Re1 Bc4 Re6 Bb3 Bf6 a1R Qe3 Ra2 Ba1 Ra6 Qe1 Ba2 Qe5 Rf3 Bb5 Rd3 Bc6 f3+ Kf1 f2 Kg2 Nf3 Rd1 Ng1 Ba8 f1B+ Kh1 g2+ Kh2 Bhe7 Qe3 Bf6 Kg3 Bh4+ Kf4 Rc3 Qf3 Bb5 Ke5 Rd3 Q7f4 Nge2 Qf6 g1B Qg3 Bh2 Qf7 Ng1 Bc7+
6N1/2k1Prnn/3p1Bn1/1B1qQ3/K3p2Q/PNb1pR2/1rb3bb/1r1RQ1N1 b - - 0 1 illegal: No proof kernel
B3N3/2PQ1b2/b6b/n1pPpQ2/1R1Rq3/R4Nrk/1Brp1K1b/r1nr2B1 b - - 0 1 illegal: No possible last move, all moves rejected
1Q3bR1/1N2bRr1/2kpN1b1/Q2r1B1b/2b1K1p1/1nb1B3/Rp1P1N1P/n1r5 b - - 0 1 legal: proof: f4 e5 b4 exf4 g4 a5 Ba3 axb4 Bc1 h5 c4 hxg4 Bh3 b5 Nc3 b3 Nb1 b4 Bg2 Qg5 Bf1 Qb5 cxb5 Rh3 Qc2 Rh5 Qd1 Rh8 Kf2 c5 e4 f5 a4 g5 a5 c4 b6 g3+ Kf3 b2 e5 b3 b7 c3 a6 g2 e6 c2 a7 Nc6 b8N Nd4+ Kf2 f3 Ke3 f4+ Ke4 f2 e7 f3 Qe2 Rh7 Qe1 Rg7 Ne2 g1B Na6 Nf6+ Kd3 Ng4 Ra5 Ne3 Na3 b1B Bb2 c1B+ Nc2 d6 Ra1 Kd7 e8R Kc6 Bc3 Bg4 Nf4 Bb2 Bh3 f1B+ Ke4 f2 Ra2 Bc4 Ne6 f1R Nac5 Bf2 Nb7 Bh5 Bf5 g4 Qc1 Rc8 a8Q Bh4 Qb8 Bhe7 Ba5 Rf2 Rf1 Bc3 Qa3 b2 Bb6 Nb3 Qa5 Re2 Bd4 Re1 Rf4 Rc1 Rd8 Ng2 Be3 Ne1 Qba7 Ra8 Qb8 Ra6 Rf2 Rb6 Rf1 Rb5 Rf4 Rd5 Re8 Nd3 Ne1 Nb4+ Nd3 Nc2 Nf2 Bg5 Re7 Bh4 Rf7 Bhe7 Rf3 Nca1+ Kf4 Be4 Rh3 Bg6 Rh8 Bh5 Rg8 Bg2 Bd3 Be4 Bc2 Bh7 Bf5 B7g6 Ke4
r1R1n3/3r1p2/2Q2rkB/b1pp4/2N1B3/KbRP2r1/QNPp4/Nbb1nQ2 b - - 0 2 legal: proof: g4 h5 b4 hxg4 b5 e5 b6 e4 Bh3 e3 Bg2 axb6 Bh3 b5 Bf1 b4 f4 Qe7 d3 Ra7 f5 Qe5 Qd2 Qe6 fxe6 exd2+ Kd1 Rh4 e4 Rh5 e5 Ra8 Ke2 Rh8 a4 d5 h4 b5 e7 g5 h5 g3 a5 g4 a6 c6 h6 g2 a7 g3 h7 b3 Ra3 b2 Nc3 b1R Na4 b4 Nb2 b3 Ke3 Bf5 Kd4 Bd7 Kc5 Nf6 Ne2 g1B+ Kb4 Bb6 Nd4 g2 Rh2 g1R Bg2 Rf1 Be4 Rg8 h8Q Rg3 Qh3 Ba5+ Ka4 Rf5 Qf1 Rf2 Rh8 c5+ Nb5 Nc6 Nd4 Ra1 Rg8 Rd8 a8Q Rf5 Nc4 b2 Nb3 b1B Nb2 Nd4+ Qc6 Ra2 Na1 Nf3 Kb3 Ra8 Qa4 Bb5 Qc4 Kd7 e8N Ke7 e6 Bg7 Nd6 Ne1 Rc8 Ne8 Qa4 Kf6 e7 Ba6 Ndc4 Kg6 Qc6+ Bf6 Ka4 Ra7 Qa8 Rd7 Qa7 Ng7 e8Q Bd4 Qe6+ Bf6 Qc6 Ne8 Kb3 Bb5 Nd1 Ba6 Bb2 Bb5 Be5 Ba6 Bd6 Bb2 Qaa8 Bc1 Bf4+ Kh5 Bh6 Rf6 Ne5 Bc4+ Ka4 Rb2 Rc3 Rb8 Nb2 Bca2 Qaa6 Bb3+ Ka3 Ra8 Qc4 Ba4 Qa2 Bb3 Bf8 Kg5 Nc4 Kh5 Bg7 Kg5 Bh6+ Kh5 Bf3+ Kg6 Be4+
1n1b1b2/1bq2q2/1b1pk1B1/Rr6/1Pq1B2B/p3QnP1/rnB1NK2/NR2B3 b - - 0 1 legal: proof: e4 b5 d4 c5 h4 cxd4 a4 bxa4 e5 g5 hxg5 f6 Bc4 fxe5 Bf1 e4 f4 Kf7 b4 h5 c4 e5 g6+ Ke6 g7 a5 g3 d3 c5 d6 c6 e3 c7 h4 Qc2 d2+ Ke2 d1N Qd3 a3 Qc3 h3 Qd2 a2 Qc3 e4 Qe1 h2 Qf2 a4 Nf3 Nf6 Na3 Nb2 Rg1 h1Q Bg2 Qh5 g8B+ Qf7 Bh7 Ng4 Bd2 Ne5 Nc2 Bb7 Bg6 Rh5 c8B+ Qdd7 Rab1 a1B Be1 Ra5 Rf1 a3 Ng1 Rh2 Bf3 Rb5 Bh1 Nf3 f5+ Ke5 f6 Qc7 Be6 Rg2 Bc4 Rh2 Bd3 Ke6 Bc3 Qc4 Rfc1 Qfc7 f7 Rg2 Kf1 Rh2 Qe1 Rd2 Qf2 e2+ Kg2 e1B Ne2 e3 Qg1 Be7 f8B Bd8 Be7 Bf2 Bh4 Qf7 Rf1 Qfc7 Nc1 Re2 Be1 Rd2 Bde4 e2 Bd3 Bb6 Qe3+ Ne5+ Bde4 Qf7 Rf5 Nf3 Bf2 e1Q Ne2 Qc1 Be1 Nd1 Kf1 Bg7 Na1 Nb2 Kf2 Bf8 Rg5 Qcc7 Rf5 Q1c4 Bc2+ Ne5 Bhe4 Nf3 Bd1 Na4 Rd5 Ra2 Bdc2 Nb2 Rd2 Re5 Rd5 Rf5 Ra5 Rh5 Nb3 Rb5 Na1
8/P3RN2/1n2rBn1/4pB2/P1rqb1K1/k1q1p1Nn/R2n2qB/bQB2b1B b - - 0 1 legal: proof: e4 a5 d4 f5 g4 fxe4 b4 c5 bxa5 cxd4 Na3 h5 Nb1 hxg4 Ke2 b5 h4 d5 f4 Kd7 a4 Kc6 c4 Kc5 h5 Kb4 a6 g5 f5 d3+ Kf2 d4 Kg3 d2 h6 e3 f6 d3 h7 Qc7+ Kg2 g3 Kf3 g4+ Ke4 g2 c5 g3 Kf3 Bg7 a7 Bh3 c6 Nd7 f7 Rc8 f8B Nb6 Ra3 Ba1 Qe2 d1Q Rc3 d2 Bh6 e5 Bf4 Ne7 Rc2 Rhe8 h8B Ng6 Bf6 Re6 Nc3 Bf5 Rh4 Be4+ Kg4 Kb3 Ra2 b4 Nf3 g1Q Rb2+ Ka3 Qd3 g2 Rh7 b3 Ne2 Qh1 Rg7 g1N Ng5 Nh3 Qb1 Qg2+ Bg3 Bd3 Re7 Be4 Rc2+ b2 Nf7 Qd6 c7 Qb4 Bh8 Qe1 Bf6 d1B Rd2 Qd4 Rc2 Qh2 Bg2 Qec3 Bh1 Qg2 Rd2 Bb3 Rc2 Bc4 Rd2 Qf2 Bh2 Qg2+ Ng3 Bf1 Rf2 Rh8 c8B Rd8 Bd7 Rc8 Re2 Rc4 Rd2 Rec6 Bf5 Re6 Re2 Kb3 Qd3 b1N Rb2+ Ka3 Qc2 Nd2 Qd3 Nf8 Qb1 Ng6 Ra2#
3N4/Nnn3r1/rrp1BP1n/6rk/B4b1b/K2RB1P1/2QR2N1/1Nr2qr1 b - - 0 1 legal: proof: c4 b5 e4 d5 a4 dxc4 axb5 f5 Qf3 fxe4 Qd1 g5 h4 gxh4 b6 a5 b3 a4 Qg4 a3 Qf3 Bd7 Qd1 Ba4 bxa4 Ra5 Nh3 Ra6 Ng1 Ra8 d4 Kf7 Kd2 Kg6 Kc2 h5 f4 e5 d5 h3 b7 e3 d6 c6 d7 c3 Kb3 h2 a5 c2 a6 a2 a7 e4 Bc4 h4 Ne2 h3 f5+ Kh5 f6 Na6 b8N Nh6 Rg1 h1R Bd5 h2 Rf1 Rg8 Rf5+ Rg5 Nd2 Nc7 Rf4 Rg1 Na6 h1R Rf2 Bd6 Nb1 Bf4 Be6 Rb8+ Ka3 Rb6 a8B Rh2 Bd2 c1R Qc2 Rh3 Bb7 Rhg3 Bc8 Rg7 Rf3 R3g5 Bb3 Qg8 d8N Qc4 Be6 Qb5 Nd4 e2 Nb4 e1B Rd3 e3 Nd5 e2 Ba4 Bh4 g3 e1N Be3 Qa6 Rd2 Nd3 Nb5 Nc5 Na7 Qf1 Bd4 Nd7 Ne3 Nc5 Ng2 Nb7 Be3 Ra6 Nc3 Rb1 Rd3 Rbb6 Rad1 a1R+ Ba2 Raa5 R1d2 Rc1 Be6 Raa6 Nb1
4b1R1/2p3q1/r2b2r1/1N3nq1/1Rr3PQ/PK1B1bB1/1b2rrk1/B1B1N1N1 b - - 0 1 legal: proof: f4 a5 c4 d5 cxd5 e5 b4 axb4 g3 exf4 h3 fxg3 Qc2 g5 Qb3 g2 Qd1 g4 Qa4+ Nd7 Qd1 g3 Bb2 Ne5 Bc1 Ng4 hxg4 Ra6 Nf3 Ra4 Ng1 Ra8 d4 Kd7 Kd2 Kd6 Kc2 h5 e4 f5 a3 b5 Qd3 b3+ Kb2 h4 Rh2 h3 Be3 b4 Qd1 f4 Bb5 f3 Bc4 f2 Bb5 f1R Bg5 Bd7 Bc6 Ra6 Bb5 Rf2+ Nd2 Ne7 Rb1 Rh6 Bd3 Nf5 Qe1 Be8 Be3 Qg5 e5+ Ke7 e6 Kd6 e7 Rg6 Rh1 h2 Bf4+ Kd7 d6 Kc6 d7 Kd5 d8B Bg7 Ne2 g1R Nf3 Rgg2 Bc1 Bf6 Rf1 h1B Ng1 Be5 Qd2 Bd6 Qe1 Rf4 Rf3 Rf2 Re3 g2 Rh3 Rf6 Rh8 Rg6 Rg8 Re4 Ka1 b2+ Ka2 Re3 Kb3 Re4 Ng3 Rfe2 Nf1 Rf4 Qh4 Rff2 Bb5 Ke4 Ne3 Kf4 d5 Ke4 Bd3+ Kf4 Nh3+ Kf3 Nc2 g1B Bf4 Rf1 Bc1 Bd4 Ng1+ Kg2 Nf3 Bh2 d6 Rff2 d7 Bd6 Ng1 Bf6 Ra1 Bfe5 Ra2 b1Q+ Rb2 Qa1 Rb1 Rf4 Rb2 Rc4 Rb1 Bf7 e8N Bb2 Bf6 Rf2 d8B Re2 Ng7 Be8 Ne6 Rf2 Ned4 Re2 Nb5 Rf2 Bd4 Re2 Bb6 Rf2 Ba5 Re2 Ka4 b3+ Nb4 Bh8 Be7 b2 Rf8 Kf1 Bd8 Bf3 Bf6 Kg2 Rg8 Rec2 Be5 Rd2 Bg3 Rf2 Bh2 Rcc2 Bg3 Rce2 Nc2 Qa2 Ra1 Qf7 Ra2 b1R Rb2 Bd4 Rb3 Qg7 Rb2 Rb6 Bc3 Bf6 Rb3 Bfe5 Ba1 Rb2 Nd4 Rbc2 Rb4 Rc4 Nc2 Bb2 Kb3 Ra6 Ne1+
4r2n/n1R1BBNK/4qb1P/1Q2b2N/q3B3/n7/1PrRbRqq/kn4nB b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 Kd2 Ke7 Kd3 Kd6 Ke4 Kc5 Kf5 Kc4 h4 d5+ Ke5 f5 e4+ d3 h5 a5 b6 g5 h6 f3 c3 a4 b7 d4 Ra2 f4 Qc2 g3 Qg2 Kb3 c4 a3 c5 d2 c6 d1Q c7 f2 Qf3+ d3 Be2 f1N Ra1 a2 Qe3 f3 Qf2 d2 Na3 g4 Qg2 f2 Nb5 Bd6+ Kd5 Qe1 e5 d1Q+ Ke4 Qh4 e6 Nc6 Kf5 Nge7+ Ke4 Qh2 b8R Ng6 Kf5 Nd2 Qf1 g2 Bf3 g3 Rb7 Na7 Nh3 g1B Nf4 g2 Nh5 Rg8 Kf6 Nh8 e7 Re8 Kg7 Bg4 c8B Qe6 Kh7 Bg3 Rb1 a1N Nd6+ Ka2 Qb5 f1Q Nf5 Bd4 Nfg7 Qa4 Rg1 Qf2 Rf1 g1N Bd7 Nc2 Bdc6 Bc3 Bh1 Rac8 Bce4 Qfg2 Rf2 Be2 Rd7 Na3 Rb7 Ndc4 Bg5 Nd2 Rd1 Ndb1 Rd2 Ka1 Bh4 Rc5 Rc7 Bd4 Bf6 Rc2 Bg5 Bh4 Bf6 Be5 Bg5 Rf8 e8B Rg8 Bd8 Bhf6 Bf7 Re8 Be7
1r1n3N/1n3q1R/4bPB1/2R1b1n1/2r3kB/BpP3BN/2r1N3/nK1n1rQb b - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 h5 d4 hxg4 Nh3 c5 Ng1 cxd4 Kd2 Kf7 h4 Kf6 f4 g5 a4 e5 c3 d5 Kc2 b5 h5 e4 a5 e3 a6 e2 h6 e1N+ Kb2 g3 h7 d3 a7 d4 Be3 g4 Qe2 d2 Ra4 d1R Ra1 d3 Ra6+ Bd6 Qh2 d2 Qh3 g2 Ra5 g3 Na3 b3 Ra6 b4 Nc2 Qd7 Rh2 Nh6 Rh1 Nf7 Rh2 Nd8 Qg4 Rc1 Rc6 Na6 Nh3 g1N Bf2 g2 Bd3 Rb8 a8N Qf7 Nb6 Ngf3 Nd4 g1R Bg3 Be6 Nc8 Rc2+ Kb1 d1N Ne7 b2 Ne2 Rf1 Rc5 Be5 Ng6 Ng5 Bh4 Re8 Nh8 Re7 Qg1 Rc7 Rb5 Rc4 Rc5 Rd2 Rh1 Nc2 Rh2 Na1 Rh1 Kg7 f6+ Kh6 f5 Kh5 Be4 Rc2 Bd3 Qa7 f7 Qb7 f8B Qf7 Bg3 Kg4 Be7 Nc7 Bf8 Ne8 Be7 Nd6 Rh2 Nf3 Beh4 N6b7 f6 Ng5 Bg6 Qc7 Nf7 Qe7 h8B Qf8 Bg7 Qg8 Nh8 Qf7 Ka2 b3+ Ka3 b1B Bf8 Rc1 Be7 Be4 Bf8 Ne3 Kb2 Bh1 Be7 Rf3 Bd6 Rc2+ Kb1 Rff4 Rc6 Nd1 Ba3 Rf1 Rc7 Qe8 Rh7 Qf7 Rf2 Bc7 Rf5 Bd6 Rd5 Be5 Rc5
2qb1N1q/2n2N1n/B1P2b2/Nq2r3/rB1p1kr1/2Rq1PR1/1QN2K2/1bB2b2 b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 cxd4 Nd2 g5 Nb1 gxh4 g4 Kf7 b4 Ke6 c4 Ke5 b6 h5 b5 a5 g5 d5 g6 e3 c5 d3 c6 h3 g7 a4 f3 a3 b7 h4 b6 e2 Bd2 h2 Nh3 a2 Nf2 h3 Na3 Na6 b8N Rh4 b7 Nc7 Ba5 Bf5 Qb1 Kf4 Ne4 e5 Bb4 d2+ Kf2 d1Q Qd3 e1R Ng5 e4 Ba5 Be7 Qe2 Qd3 Bb4 Qc8 Rc1 a1B Nd7 Nf6 g8N Rg4 b8B Bd8 Ne5 Ra4 Qb2 Nh7 Rg1 h1Q Nac4 h2 Nef7 Re3 Qe2 Baf6 Na5 d4 Rc3 Bg6 Rg3 Qb5 Bh3 Qd1 Qb2 h1B Ne7 Qdd3 Bf1 Bg2 Nf5 Re1 Be2 Bf1 Ne3 Bf5 Ne5 Bg6 Nd7 Bf5 Nec4 Bg6 Nf7 e3+ Kg1 Bf5 Nf8 Be4 Bd1 e2 Kf2 Bd5 Ne3 Ba2 Bb3 Bb1 Be6 Rc1 Bc4 e1Q+ Kg1 Qed1 Kf2 Qb3 Kg1 Re1 Kf2 Qh5 Ba6 Qdb5 Nec4 Re5 Ne3 Na8 B8d6 Nc7 Ba3 Qd3 Bdb4 Qd5 Qe2 Qh6 Bc1 Q5b5 Qd2 Qg7 Qb2 Qh8 Nc2+
1N5K/B1rR2n1/r1rn1b2/4nb2/1q2RP2/3bP3/2pNRQqp/krB1B2B b - - 0 1 illegal: No proof kernel
1nkr4/1RB3Qp/qqPb2B1/1N2p2b/PN4q1/pb1NB2n/1r3R1r/K2B4 b - - 0 1 illegal: No proof kernel
1R1B4/1b1bpb2/1b1bb2p/Npq1P1rB/QBkr1n1R/2N2BNP/1n1n1K2/8 b - - 0 1 legal: proof: d4 c5 b4 cxd4 g4 a5 g5 axb4 g6 fxg6 Qd3 g5 Qd1 g4 f4 Kf7 a4 Ke6 c4 g5 e4 d5 h3 b5 a5 g3 a6 g4 c5 h6 c6 d3 a7 g2 c7 d2+ Kf2 b3 Ra5 g3+ Kf3 d4 Nc3 b2 Qc2 b1B Ba3 d1B+ Be2 d3 Na4 d2 Qc4+ Qd5 Ke3 Nd7 Qd4 Bb3 Bf3 d1B Bb4 B1a2 Qd3 Ngf6 Qc4 Nc5 Bh5 Bd7 c8N Nd3 Ne2 g1N Ncb6 g2 Ng3 Nf3 Rf1 Rd8 a8B Nb2 Nc3 Nd2 Kf2 Bf3 Ra4 Rg8 f5+ Ke5 Bb7 Bg7 Ra8 Qc6 Rb8 Nd5 f6 Nf4 f7 Qc5+ Qd4+ Ke6 f8B Be5 Bg7 Bd6 Be5 Rg5 Bc6 Bd5 Nc4 Bg4 Ba8 Bb7 Na5 Bad5 Ra1 Bf5 Ra4 g1B+ Ke1 Be3 Qc4 Bg6 Bd4 Bf7 e5 Qc7 Bb6 Qc5 Qa2 Bc4 Nd1 Kd5 Nc3+ Kd4 Qa3 Bce6 Bc7 Ba6 Baf3 Bb7 Bb6 Kd3 Qa1 Qc6 Bc7 Bb6 Qa2 Qc5 Qa3 Rdg8 Bd8 Rg4 Qa2 R8g5 Qb3 Ne2 Qd1 Rd4 Kf2 Nf4 Ra3 Bg6 Qa4 Bgf7 Ra1 Ng6 Re1 Nf4 Re4 Ng6 Rh4 Nf4 Nb3 Kc4 Na5+
bB2r2b/5r2/b2n2Bb/1rrr1pR1/1rqNn3/6Rk/QPQN3P/3BKB2 b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 d4 exf4 Nd2 c5 Nb1 cxd4 c4 Ke7 e4 Ke6 b6 d5 e5 Kf5 c5 a5 c6 g5 e6 d3 e7 f3 e8B g3 c7 Kg4 b7 g2 Ra2 d2+ Kf2 d4 Bfb5 a4 Ra3 d3 Nh3 g1B+ Kf1 Qd4 Bc4 Nf6 Qe2 d1R+ Qe1 d2 Bd5 f2 Rb3 a3 Rd3 a2 Nc3 a1R Bdc6 Ne4 Ne2 Rh5 Nhf4 Qc4 Ng6 Nd7 b8Q Ndc5 Ne7 R1a4 Rd8 Kh3 Ng8 g4 Rd5 g3 Nf6 Nb7 Rg5 Bh6 Bb5 Rb4 Qa7 Nbd6 Qa2 Ba6 Ba4 Rab8 Bb3 R8b5 c8B+ Qe6 Nd4 g2+ Ke2 f1R Bcd7 Be3 Qf2 g1R Bc6 Rg3 Rg1 Bg7 Bb7 Bh8 Rg2 Rf3 Bc2 Qc4+ Bd3 Rg1 Bbc6 Rc5 Ba4 Rff5 Beb5 Rfd5 Bc2 Rdf1 Bd1 Rh1 Ng4 f6 Ne5 Rhg1 Nef3 Rh1 Rg6 Bh6 Be8 Rhe5 R6g5 Rcb5 Bg6 Re8 Nb3 Rhg1 Nfd4 f5 Kf3 Re1 Bf1 Re7 Qe2 Rf7 Qd3 Rdc5 Qc2 Rd5 Bde2 d1B Bf4 Rh1 Nd2 Rg1 Qcb1 Bc2 Bd1 Bd3 Bg3 Bb7 Qc2 Ba8 Bde2 Rc1 Bd1 Rh1 Bfe2 Re1 Bf1 Nc5 Kf2 Re8 Bf4 Nce4+ Ke1 Qb3 Qcb1 Rcc5 Qc2 Qc4 Bg3 Nb7 Bc7 Nbd6 Bb8 Rb6 Qa6 Qa2 Qa5 Ba6 Qaa4 Qc4 Qa2 R6b5 R2g3+
nB3n2/kbq1q2p/5P2/1pN1b1RN/rB1n2Q1/2qrnR2/BP1Q4/K3B1n1 b - - 0 1 illegal: No possible last move
3Q2KR/1b3P2/NB2B1n1/B2Nbqb1/b2b1rqP/2n1p1pk/8/rr1RBQ2 b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 g4 cxd4 Nc3 h5 Nb1 hxg4 Kd2 Kf7 b4 Kf6 f4 Kf5 h4 g5 c4 a5 b6 e5 b5 d5 b7 e3+ Kd3 g3 b6 g4 c5 e4+ Kc2 e2 Kb3 e1R c6 a4+ Kb2 g2 c7 a3+ Kb3 d3 Nd2 a2 Qf3 g3 Nh3 d4 Kc4 g1B Nb3 d2 Nc5 d1Q Na6 d3 Bd2 Qf6 Kd5 Nd7 b8B Ne5 b7 Be7 Ba7 Bd4 b8B e3 Bb6 Ng6 Bda5 d2 Bc4 Rh5 Qf1 Kg4+ f5 Rh7 Rg1 Rf7 Nf4 Qe2 Rd1 a1B Rg2 Qg5 Rf2 Bb7+ Ke6 Nf6 c8Q Nd5 f6 Nc3 Bd6 Bd8 Bdb4 Qf5+ Kd6 Rb8 Be6 Qf3 Nd5 Qe4 Rb1 d1B Qc7 Ba4 Rd1 Qg2 Rf4+ Kh3 Rg4 Ra8 Rg5 Rb8 Rh5 Bb2 Rh8 Rf8 Qb5 Qe2 Kd7 Rf7+ Ke8 Qeg4 Qcd7 Rf1 Qd3 Rf4 Q7b5 Rc7 f7 Ba1 Qd7 Rc6 Qe2 Bg5+ Qd8 Rc5+ Bd7 Rb5 Be6 Ra8 Qf3 Na2 Be1 Nc3 Qe2 Rb1+ Qb5 Ne5 Kf8 Ng6+ Kg8 Be5 Qde8 Bb3 Nac7 Na4 Qd8 Bad4 Bab4 Nc3 Qd3 Raa1 B4a5 Bc2 Na6 Ba4 Qf1+
3B1n1Q/N1rk2bQ/1qR1B3/1b2q3/rP2nNp1/1bR3Q1/pKb2P1p/n4Q2 b - - 0 1 illegal: No proof kernel
3B2B1/pKb1pbnN/4r2n/N1p1P3/1R3r1Q/n2NN1nb/r1P5/2R1Q1bk b - - 1 2 legal: proof: f4 d5 a4 b5 e4 bxa4 h4 g5 Nc3 Qd6 Nb1 Qe5 fxe5 dxe4 Be2 gxh4 Bc4 Bh6 Bf1 Bf8 Kf2 Kd7 Ke3 Ke6 Kd4 Kf5 Kc5 Kf4 b4 Kg3 d4 h5 d5 f5 d6 e3 d7 e2 d8N e1B b5 f4 b6 f3 b7 a3 Nd2 a2 Ne6 f2 Rb1 a1R Ng5 h3 Kb5 c5 Nh7 h2 Bc4 f1B Ng5 h4 N5h3 Na6 Kc6 Ra2 b8N Bh6 Nb3 Nc7 Nd4 Be6 Ng5 h3 N1f3 Nb5 Kb7 Na3 Nbc6 Ba5 Ne1 Rf8 Nd3 Rf2 Rg1 h1N Bd2 Kh2 g4 Rf8 Nf5 Bd5 Ne4 Be3 g5 Rh6 Nf6 Ng3 g6 Nh5 g7 Bd8 Rg4 Bg1 Nh7 Rd6 Ra1 Nh6 g8Q Rff6 Qe6 Ng7 Ne3 Ba5 Re4 Rf4 Qeg4 Bg8 Bf7 Re6 Qh4 Bb6 Rc1 Ba5 Ng4+ Kg2 Bb4 h2 Qde1 h1N Bc3 Bd8 Ba5 Ng3 Rb4 Bb6 Qg5 Kh1 Qh4+ Bh3 Ne3 Bc7 Bb6 Bb8 Bd8 Bd6 Na5 Bc7 Nf8 Bh7 Bg8 Bg6 Nh7 Bh5 Nf8 Bf7 Nh7
4BQ2/2pRpB2/1p1BP1R1/p5b1/1nn2B1P/3Q1rr1/p2bNb2/k2bnN1K b - - 0 1 illegal: No proof kernel
1rkQ1r2/b5p1/1nnRrRN1/pRNN4/B4Nb1/1bn1PNP1/3K4/1qn2r2 b - - 0 1 illegal: No extended proof kernel
3n2B1/2q1qrRQ/1PQQ4/2n2k2/Q1r1b1pB/2pN4/2B1n1PK/1q1Rn2n b - - 0 1 legal: proof: b4 a5 h4 g5 c4 d5 a4 dxc4 f4 e5 b5 exf4 Nc3 g4 Nd5 b6 Nb4 axb4 a5 Bh6 axb6 Bg5 hxg5 Qe7 Ra5 Qd7 Ra1 Qd8 Kf2 Kd7 e4 Ke6 d4 f5 e5 h5 b7 c5 b6 f3 Kg3 c3 g6 f2 g7 c4 Rh2 c2 Qf3 c3 Ra2 b3 Ba3 c1N Ra1 h4+ Kf4 b2 Rh1 b1Q Be7 h3 Kg3 f4+ Kh2 Rh7 d5+ Kf5 d6 Nh6 g8B Ra4 d7 Rc4 e6 Qc7 d8Q Nd7 b8Q Nc5 Bf7 Ne2 Qc6 f3+ Qdd6 Bb7 Bg8 Nf7 Bh4 Nd8 e7 Rf7 e8Q Qe4 Rd1 Qee7 Qa4 Be4 Qac6 Nc1 Qba8 N1d3 Qab7 Ne1 Bd3 f1Q Bc2 f2 Nf3 Qd3 Ne5 f1N+ Kg1 Ng3 Kh2 Ne2 Qa4 Qd2 Qec6 Qc1 Nd3 Qb1 Qba7 Nf4 Kg3 h2 Rf1 h1N+ Kh2 Qb4 Rf3 Qb1 Re3 Bd5 Re6 Ne2 Rg6 Be4 Rg7 Qb7 Qh6 Qc8 Qb8 Qcb7 Qbd6 Qbc7 Qh7#
1b3r2/1b1n1N1K/1R3N2/B2q1N1n/bp3rPp/qk2QR2/2r1Qr1P/1rR1N3 b - - 0 1 legal: proof: e4 d5 f4 dxe4 a4 b5 axb5 g5 b4 gxf4 b6 c6 b7 Qd4 b5 Qd6 b6 Qd8 Bb5 cxb5 Kf2 Kd7 g4 Ke6 c4 h5 d4 f5 c5 Kd5 c6 Kc4 c7 a5 d5 e5 d6 f3 Ke3 f4+ Kd2 f2 d7 f1R Ra3 a4 Kc2 e3 Rb3 f3 Rd3 e4 Rd6 f2 Rf6 e2 Rf4 e1R Ne2 h4 Rf3 a3 Nf4 a2 Bd2 a1Q Nd3 e3 Qe2 Ra4 Ba5 Nf6 Nc3 Nh5 Ne4 Bd6 Nf6 Qa3 Rg1 Qg8 d8N Rb1 Nf7 Nd7 b8R Bb7 c8N Qg5 Rh1 Qd5 Ne7 Rf8 Nf5 b4 Qd2 e2 Qe3 e1R Qe2 Ba8 b7 Rec1+ Kd2 Kb3 Ke3 Rc2 Rg1 Qb5 Ke4 Bg3 N5h6 Be5 Kf5 Qd5 Kg6 Bf4 Kh7 Bg3 Nf5 Bc7 Re8 Bb8 Bd8 Ra6 Ba5 Rac6 Re7 R6c4 Re6 Rf4 Rh1 Rfd1 Re1 f1B Rb6 Rdd2 Rc1 Bg2 Qe3 Rf2 Qe2 Bc7 b8Q Bb7 Qbe8 Bb8 Q8e6 Bc6 Qe7 Ba4 Q7e3 Qb5 Rg3 Bb7 Rf3 Qd5 Ne1+
2R3qR/B3NPQ1/r1qb1p1p/1rQ4R/b2R2pK/4k2B/1q1Bp1P1/1b1nn3 b - - 0 1 illegal: No proof kernel
4n1Q1/2p2rP1/2r2q1Q/BpB2n1K/1b1Bp1QR/p5b1/qP1R2b1/1qN2Bk1 b - - 0 1 illegal: No proof kernel
3Bn3/1r1BN3/n1KN4/bpp1Rb2/1P6/3pqn1Q/2p1bP1N/1Bb1NrkQ b - - 0 1 illegal: No possible last move
nk4n1/Bb1Kn3/R2p4/5Rr1/3Nn1RN/rrq1PP2/R1RQ1n2/n1R3b1 b - - 0 1 legal: proof: g4 b5 d4 f5 a4 e5 axb5 exd4 e3 h5 gxh5 c5 Bg2 f4 Qg4 f3 Bf1 c4 Bd3 cxd3 Kd2 Be7 Qg2 Bd6 Qf1 Bf8 Qe2 fxe2 b4 e1N c4 a5 h4 g5 h6 a4 h7 d6 b6 Kd7 b7 Kc7 b5 g4 b6+ Kc6 c5 g3 h5 g2 h6 a3 Bb2 a2 Ne2 Nc2 Rc1 Na6 b8Q g1N b7 Be7 Qa7 Kc7 b8R+ Bb7 c6 Qd7 Rf8 Qc8 Rf5 Ncb4 Ba3 Nd5 Bc5 Bh4 Rc2 Nb8 Qa5+ Nb6 Qb4 Nh3 Rc1 Na4 Ba7 Nb6 Qc3 Ng5 Qa5 Kd8 c7+ Kd7 Qd5 Nc6 Qg2 Nce7 Qh2 Qf8 c8R Qg7 R8c2 Bg3 Qg2 Bh2 Qd5 Bg1 Qg2 Nf6 Qh2 Rhd8 h8R Nfg8 h7 Rdc8 Qg2 Rc3 Qd5 Kc7 Qg2 Nh6 Rg8 Qe5 Rg6 Nhg8 h8R Rc5 Rh2 Ne4+ Kd1 Rb8 Nd2 Na8 Nf3 d2 Nh4 Kc8 f3 Qg7 Rab1 a1N Rb6 Qe5 Ra6 Rc3 Bc5 Ra3 Ba7+ Qc5 Rg4 Qc3 Nf4 Kc7 Ke2 d1R Qf2 Rd3 Qe1 Rf8 Qd2 Rf6 Ra2 Rg6 Ne6+ Kc8 Rcc2 Rg5 Rh1 Bf2 Rhc1 Bg1 Kf1 Rb3 Kg2 Ra3 Bb6 Kb8 Kh3 Qc4 Bc5 Rdb3 Bb6 d3 Nd4 Qc3 Ba7+ Kc8 Qe2 d2 Qe1 d1N Qd2 Nc5 Kg3 Nf2 Kf4 Nce4 Rf7 Rg7 Rf6 Nd5+ Kf5 Nde7+ Ke6 Rg5 Rf5 Kc7 Bc5 Kb8 Kd7 Nc6 Bb6 Nce7 Ba7#
4b3/r1NkRq2/N1Nn1PR1/1N1rn3/4Nr2/1b1r2PB/1r2bR2/1q2b1NK b - - 0 1 legal: proof: c4 b5 h4 d5 cxd5 g5 a4 gxh4 axb5 e6 d6 e5 e4 f6 d4 Ne7 d5 Ng8 Qd4 Nc6 Bf4 exd4 e5 Nb8 e6 Nc6 Bh2 Nb8 Be5 fxe5 b4 h5 f4 a5 Kf2 c5 e7 d3 f5 h3 g3 d2 b6 d1B f6 c4 b7 a4 b5 h4 b6 a3 Nd2 h2 Kg2 e4 Be2 a2 Bf3 c3 Be2 h3+ Kf1 e3 Bc4 c2 Ne2 c1Q Rg1 h1B Nf4 e2+ Kf2 e1R Bf1 h2 Nh3 Bb3 Rg2 Ra5 Ng1 Nd7 b8R Re3 b7 Rd3 Rb1 Qb2 Re1 a1R Re4 Qc7 Re6 Ne5 Ra8 Bh6 b8N R1a4 Ra7 Rh7 Na6 Bf8 Rb7 Nh6 d7+ Kf7 e8N Nf5 Rb4 Qb1 d6 Rad5 Rg4 Rc4 Rg6 Rg4 Ke2 Rf4 Ne4 Be7 d8N+ Kf8 d7 Bb4 Rg7 Be1 Nf7 Qb7 d8N Bd7 Rg6 Bc6 Nh6 Nd6 Nf5 Qg7 Nd4 Qg8 Ngf3 Ra7 Ng1 Qf7 Nb5 Bd7 Nec7 Bc6 Rf2 Bd7 Bh3 Bf3+ Kf1 h1R Re2 Rh2 Nc6 Rg2 Re3 Rb2 Re2 Bg4+ Kg2 Bh5 Rf2 Be2 Ne7 Bc6 Kh1 Bd7 Na8 Ke8 N8c7+ Kd8 Nc6+ Kc8 Ncb4 Be8 Nc6 Kd7 Re7+
5b2/5B2/pPbB3b/P1nb1p2/q4NQR/1qP2rp1/1kr2N2/R2NKRrr b - - 0 1 legal: proof: f4 e5 c4 exf4 g4 h5 c5 hxg4 c6 bxc6 Kf2 c5 Qe1 c4 Qd1 c3 Ke1 c2 b3 c5 Na3 c4 Nb5 c3 Nh3 Na6 Ba3 c1B Ng1 c2 Nc3 Nc5 Nb1 Na4 Kf2 Bb7 Ke1 Nc3 dxc3 Bc8 e4 d5 h4 Kd7 h5 Kc6 h6 g5 h7 f3 e5 f2+ Ke2 Kb5 b4 Ka4 e6 a6 b5 d4 e7 g3 e8N d3+ Kf3 d2 Ke2 g4 b6 g2 Bd6 g3 a3 Kb3 a4 Nf6 a5 Nd7 Na3 Nc5 Nb1 Be6 Ra3+ Kb2 Nh3 g1R Ng7 Bd5 Ne6 Qd7 Ra1 Qa4 Na3 f5 Bg2 Rd8 Nef4 f1R Be4 Rf3 Nf2 Bc6 Bd5 Qb3 Qf1 d1B+ Ke1 Be3 Be6 c1Q Bf7 Qcc2 Rh4 Qe4 Nc2 Qea4 Rh1 Bc1 Ne3 Be2 Rh4 Bc4 Rh1 B4d5 Rh4 Rg8 h8R Rg5 R8h6 Rh5 Rh1 Rh2 Rh4 Ra8 N2h3 Rc2 Nf2 Rg2 Qc4 Rc8 Rf1 Rg1 Ne2 Rb8 Qg4 Rb7 Ng2 Bch6 Nef4 Re7+ Ne3 Re4 Rd1 Rd4 Ra1 Rdd2 N2h3 Rh2 Nf2 Rhh1 Ned1+
r3R1n1/1KR3BB/3k2qN/pP6/1QqPrnpp/3bN1N1/1npb2P1/2B1q3 b - - 0 1 legal: proof: f4 d5 a4 e5 c4 dxc4 h4 exf4 h5 b5 axb5 Qd3 h6 Qh3 Na3 Qxh6 Nb1 Qh2 Kf2 Kd7 Kf3 a5 Ke4 f5+ Kd5 h5 b4 c5 e4 g5 d4 c3 e5 f3 b6 h4 b5 f2 b7 c4 Qe2 c2 Qd2 c3 Qd3 g4 Qd1 f4 Bd3 f1Q Nd2 f3 Qe1 f2 Nc4 Bh6 Bh7 Bd2 Ne2 Na6 b8B Nc5 Ng3 Na4 Ne3 Nb2 e6+ Ke7 Kc6 Qc4+ Kb6 f1Q Be5 Qf6 Ra4 Qg6 Bg7 Kd6 e7 Bf5 Kb7 Qg1 Ra2 Bd3 e8N+ Ke6 Nf6 Kd6 Ra4 Re8 Rh3 Re4 Rb4 Nh6 Rh1 Ra8 Ng8 Qf2 Rf1 Qg1 Rf8 Qf1 Ne7 Ng8 Re8 Qe2 Qg1 Qe1 N7f5+ Kd7 Nh6 Kd6 Rb3 Na4 Bb2 c1N Ra3 c2 Rc3 Ne2 Bc1 Nb2 Qf2 Qb3 Rc7 Qc4 Qf5 Nf4 Qf7 Qc3 Qb3 Qc4 Qb4+
b4R2/Pb1Q1n2/1pN2R2/3K3P/2r1P2r/B1k3nb/Q2pr1Nq/Q2B2rb b - - 0 1 legal: proof: c4 c5 b4 e5 d4 cxd4 g4 a5 f4 exf4 c5 axb4 c6 h5 gxh5 Bc5 c7 Na6 Kd2 Ba7 Ke1 Bb8 cxb8Q Rh6 Qc7 Rh7 Qb8 Rh8 Kf2 Ke7 Kf3 Ke6 Ke4 f5+ Kd3 Kd5 a4 g5 h4 b3 e3 g4 h6 b6 h7 b2 a5 f3 Nh3 f4 Rh2 g3 Ng1 g2 Na3 b1B+ Nc2 f2 Ra2 f3 Nh3 g1R Ra3 Qc7 Qe1 Bb7 Qc3 Nc5+ Kd2 d3 a6 Nh6 a7 Nf7 Qg7 Kc4 Rb3 d5 Be2 f1B Bd1 d4 Nb4 f2 Nc6 Bg2 Qbg8 f1B Nf4 Bh1 Rf2 Bh3 Ng2 Re8 Ba3 Qh2 Rf6 Ba8 Qg4 Bc2 Qd7 Ne4+ Kc1 d2+ Kb2 d3 h5 Ng3 Rb5 Re4 Rbf5 Rh4 e4 Ba4 Rf1 Bb5 R1f4 Ba6 R4f5 B6b7 Rf4 Kb5 Kc3 Re1 Kd4 Re2 Qge8 Rg8 Qee6 Rc8 h8Q Rc7 Kd5 Rc8 Bc2 d1R Qg8 Rc1 Bd1 d2 Qg5 Rg8 Qge5 Rc2 Qb2+ Ka4 Qa1 Kb3 Qb1+ Kc3 Rf2 Ne5 Rf8 Nf7 Rf1 Rb2 Rf6 Rb4 Qed6 Rg7 Qa2 Rc4 Qb4+ Kd3 Qb5 Kc3 Qbb1 Nf5 Nf4 Rg1 Ng2 Ng3 Qba1+
1rq2rb1/1q1R2Qq/1Bp1P1N1/4Nq2/1p1n1r1Q/Nq3B2/PnP5/3krR1K b - - 0 1 legal: proof: e4 d5 b4 dxe4 h4 g5 Ne2 a5 Ng1 axb4 f4 gxh4 Be2 e5 Ba6 e3 Bf1 e4 Rh3 Bd6 Rh1 Be5 fxe5 Bf5 Ba3 Be6 Bc1 Bc8 d4 Kd7 g4 Kc6 g5 Kd5 g6 b5 g7 f5 Qg4 h5 Qd1 f4 Qd2 b3 Bb2 f3 Ba3 h3 Bc5 b4 Ba6 b2 Kf1 f2 Nf3 h4 Qe2 h2 Kg2 f1R Ne1 h3+ Kg3 Nc6 Qf3 e2 Nd3 e1Q+ Qf2 e3 Nd2 b1Q Nf3 Ke4 d5 e2 d6 Qb3 d7 Nf6 g8Q Nh5+ Kg4 Rb8 Qh4 Qf2 Qg3 e1R Rd1 Nd4 Bb7+ Ke3 Qh4 Ke2 Bb6 Nf4 Qg7 Rf8 Nb2 Nd3 Nc4 Nb2 Na3 Qe8 Rg1 h1Q Bd5 h2 Kh3 Ba6 d8N Bc4 Ne6 Qc8 Rd3 c6 Be4 Rf4 Rd1 Qb7 Nf8 Bg8 e6 Qc8 Ng6 Qb7 Rg3 Rff8 Nfe5 Qf5+ Ng4 Qc8 Rgd3 Rf4 Kg3 Qf1 N4e5 h1Q Bd5 Qhe4 Kh2 Qf7 Rb1 Qfb7 Rbd1 Qf5 Bh1 Qf3 Bg2 Q3h5 Bf3+ Kf1 Kh1 Qh6 Be4 Qh7 Rf3+ Ke2+ Rf1 Nb5 Rd7 Nd4 Bg2 Kd1 Bf3+
q1rb1rN1/4P1r1/1k1q2p1/2Bbp1BR/2Pp3N/3Pn2K/rR1Qn2Q/2n2B2 b - - 0 1 illegal: No proof kernel
N4bQ1/P1p2N1b/R1P2q2/5R2/1bP2KBn/qr1r2Qp/Q1Bp1n1b/3nk3 b - - 0 1 illegal: No proof kernel
3n1qb1/r2Nn1pB/1Br2p1q/1P2pp1b/1N1R1PP1/1Qn5/B1R2q2/2KQ3k b - - 0 1 illegal: No proof kernel
k2nb1nQ/1N1P1R2/KQB1q1bB/p4p2/P1R2n2/1q3qN1/5P1q/r1Q2rbr b - - 0 1 legal: proof: e4 d5 c4 dxe4 h4 g5 c5 gxh4 c6 bxc6 Ba6 c5 Bf1 c4 Ke2 Kd7 g4 Kc6 d4 Kb7 b4 c5 d5 h5 a3 e5 b5 e3 b6 h3 g5 h4 d6 c3 Kd3 e4+ Kc4 e2 Kb5 e1R g6 e3 g7 c2 Nd2 e2 Rh2 c4 Bb2 c1N Ne4 c3 Nf6 c2 Nf3 Qc7 Bc3 Nd3 Nd4 c1Q Ne8 Qb1+ Nb3 Nc6 Bd2 Bf5 Bf4 Nd8 Bg3 Bg6 Rg2 f5 Bf4 h2 Nf6 h1B Qc1 h3 Ne4 h2 Bh6 Nf4 Rg4 Qb8 Bh3 Rf1 Bg2 e1Q Ng3+ Qbe4 Ra2 Qf3 d7 Bd6 Rc2 Qe6 Rc4 a6+ Ka5 Ra7 Nc5+ Ka8 Nb7 Qb3 Bd5 Bf3 Rg5 h1Q Bc6 Bfh5 Rg4 Qhf3 Rh4 Nf6 g8Q Be5 Qf8 Ng8 Rg4 Be8 Rg7 Bhg6 Rf7 Bd6 Bg7 Rhh1 Bh6 Nd5 Qg7 Bf4 Qh8 Qbe5 Ne4 Bh2 Ng3 Bg1 Ne2 Qh2 a4 Nf4 Ng3 Qbd1 Kb4 a5+ Kb5 Qdb3+ Rb4 Ra6 Nc5+ Kb8 b7 Qbd1 Rc4 Ka7 Nce4 Qc2 Nd6 Rb6+ Kc5 Rb1 b8Q+ Ka6 Qb5+ Ka7 Nb7 Ka8 Kb6 Qcb3 Ka6 Ra1 Qb6
B4r1r/2n2qPn/Bn3RRN/pb1n3p/1q1bQBpP/2b3P1/2bN1kQ1/2K5 b - - 0 1 illegal: Other
BRK4b/3n2p1/PpP3B1/1b2bp1k/b1NB3B/1nn3bP/Rrr3N1/q3Q3 b - - 0 1 illegal: Other
1r2rN2/N1Pb2B1/n2rb2p/p1PN1q2/N1RK2pb/7n/n5kP/3B1RQr b - - 0 1 legal: proof: d4 b5 b4 c5 bxc5 f5 a4 bxa4 g4 fxg4 Nf3 e5 Ng1 exd4 Kd2 Kf7 Kd3 Ke6 c4 Ke5 e4 a5 c6 d5 c5 g5 f3 h6 c7 g3 Qe1 g4 Nh3 a3 Ra2 g2 Qd2 g1N Nf4 Be7 Nh5 Bh4 Qe2 Qd7 Be3 Qf5 Rc2 a2 Nf4 a1R Rc4 Be6 Nc3 Ne7 Na4 Nh3 Bd2 Rf8 Qe3 Na6 Be2 Rfb8 Rf1 Nc6 Bc3 Rab1 Bd1 Ncb4+ Kd2 Na2 Kd3 R1b6 Ba1 Rd6 Bc3 Kf6 Bb2 Kg5 Bc3 Qf6 e5 Re8 Bb2 Rab8 Ba1 Bd7 e6 Qe5 e7 Qf5+ Kd2 d3 Bg7 d4 Nd5+ Kh5 f4 Bf6 Nb4 Kh4 Nc6 Bg5 Na7 Bf6 Ke1 d2+ Ke2 Bg5 Qg1 d3+ Ke3 Rf8 e8N Bd8 Bc2 d1R Nf6 d2 Nd5 Re8+ Kd4 Ra1 Qe3 d1B Bb3 Be2 Bd1 Be6 Rc1 Bb5 Rc3 Bbd7 Rc4 Qc2 f5 Bg5 f6 Qf5 f7 Rc1 Bc2 Be7 Rf3 Rh1 f8N Nf2 Qe4 Bg5 Rf4 Kh3 Qe3+ Kg2 Bd1 Nh3 Rf1 Bh4 Qg1+
n1kN3N/1n1BrP1q/1p3qP1/1Brr2P1/p4B2/rq3p2/4BR2/1bbQ1RK1 b - - 0 1 illegal: No proof kernel
3K4/1N1N1Pk1/1BR2B2/1P1b1Q1n/p2Ppr2/2rQ1Nn1/5bb1/r1B1n1qb b - - 0 1 legal: proof: c4 b5 a4 e5 axb5 g5 h4 d5 cxd5 gxh4 Ra4 e4 Ra2 Be6 Ra1 Bc8 d4 f5 b4 Qd6 e3 Qf6 Bd3 Qd8 Ra2 Nc6 Re2 exd3 e4 Nb8 e5 Bc5 Re3 Bf8 Re4 fxe4 Kd2 Kf7 Ke3 a5 Kf4 h5 g4 c5 d6 a4 e6+ Kg7 Kf5 h3 f4 d2 g5 h4 b6 c4 g6 h2 d7 h3 b7 c3 b5 c2 e7 Nh6+ Ke6 Nf5 e8Q Qg5 Na3 Be7 Nf3 Qg1 Nc4 Rf8 Nd6 Ng3 f5 Bh4 Qe7+ Rf7 Qg5 Ra6 Qe2 d1R Qd3 Rc6 Qh5 Rf6+ Ke7 Rc3 d8B Be6 Bb6 Nd7 b8B Bd5 Nb7 Rf8+ Qg5 Nf6 Be5 Rf7+ Kd8 Re1 Bd2 Ra1 Qg4 c1N Bg5 Na2 Bc1 Nb4 Qf4 Nc2 Qg5 Kg8 g7 Nfh5 Bf6 Kh7 g8N Ne1 Be7 Rf6 Qf4 Rf7 Nf6+ Kg7 Qe5 Qf1 Rg1 h1B Nd7+ Rf6 Rg2 h2 Rc2 Bg2 Qe6 h1B Qe5 Rca3 Rc6 Qg1 Qf4 Rc3 Qg5+ Rg6 Qf4 Rg4 f6+ Kh8 f7 Kg7 Qf5 Rf4 Ndc5 Nf1 Bg5 Bf2 Nd7 Nfg3 Bf6+
2Nr4/K6P/2PN3b/R4b1n/q1pQQ1q1/Pr2bqp1/1Q2N1p1/1B1Rk2n b - - 0 1 legal: proof: e4 h5 g4 hxg4 b4 f5 exf5 Rh6 b5 Rh8 b6 axb6 d4 c5 dxc5 Rh6 c6 Rh7 c7 Rh8 c4 Na6 c5 Kf7 c6 Nb8 Be3 Ke8 Bc5 bxc5 Kd2 Kf7 Kc3 Kf6 Kc4 Kg5 Kb5 Kh4 Kb6 d5 f4 g5 f6 e5 h3 Kg3 f7 Kf2 a3 d4 h4 g3 f5 g2 h5 c4 f6 d3 h6 g4 h7 d2 Nc3 e4 Qc2 g3 Rh6 e3 Qb2 e2 Re1 d1Q Rh3 Nd7+ Kb5 Nc5 Kb6 Q8d4 Qb4 Ne4+ Qc5 Qa4 Nf3 Rb8 Na2 Bf5 c8N Bh6 Rd1 e1B f8Q Bed2 f7 Ngf6 Qg7 Rd8 f8Q Nh5 Ng5 Be3 Nf7 Qd3 Qc3 Qe2 Rh4 Qg4 Bd3 Qf3 Qe8 Qg4 Rd2+ Ke1 Nc1 Nf2 Qe4 Nh1 Bb1 Qf3 Ne2 Qg4 Kc7 b5 Nfd6 b4 Qb2 b3 Qcd4 Qf3 Rg4 Rb5 Rg5 Rb8 Qbc2 b2 Qcc3 Rb3 Rd1+ Kf2 Qb4 Qg4 Kb7 Qf3 Ba2 b1Q Kb6 Qd3 Bb1 Qg4 Kb7 Bd7 Ra5 Bf5 Ka7 Qc3 Rd2 Ke1 Qbb6 Qd3 Qb2 Qc3 Qbd4 Qd3 Ng1 Qf1 Ne2 Qff3 Rd1+
nn4Bn/BQ3qP1/3rr1RP/p2b4/3qQ1pb/K5R1/Pn3kp1/3R1NBn b - - 0 1 illegal: No proof kernel
5kR1/1BK4p/pRQp1pPP/1pq4N/4rR1r/1P1r1Brq/3R2Qb/1n6 b - - 0 2 legal: proof: d4 b6 a4 d6 a5 Bb7 d5 Qc8 a6 Qd7 e4 Qd8 axb7 c6 e5 cxd5 e6 d4 f4 f6 f5 Nd7 Bf4 Qb8 Nd2 Kd8 exd7 Kc7 Be5 Qd8 Ne4 fxe5 f6 Kc6 f7 Qe8 Nf6 gxf6 Ra5 Qc8 Ra1 Qd8 Kf2 b5 Kf3 e6 Ke4 a6 b8R d3 h4 d2 c4 Qe8 d8R Bg7 f8Q Qd7 g4 Bh6 g5 Ne7 c5 Nd5 h5 Rg8 Qg4 d1R b3 Rd3 Qg2 Qa7 Re8 Kd7 Rb6 Rc8 Ne2 Rg6 Qg8 Rg7 Rd8+ Ke7 c6 Rg6 c7 Rg7 Rb7 Qc5 Nf4 Rg6 Qh8 Rg8 Rd7+ Kf8 Re1 Re8 c8B Re7 Re3 Nc3+ Kf3 Re8 Rb6 Nb1 Rh4 e4+ Kg4 e5 Kf5 Re6 Re2 e3 Rd2 e2 Bb7 e1R Rg7 Re4 Be2 Ra4 Bef3 e4+ Nd5 e3 Rf4 e2 g6 e1Q Rb2 Bg5 h6 Qh4 Ra2 Re1 Rd2 Rg1 Ke6 Qh1 Kd7 Qh3+ Rg4 Bh4 Nf4 Bg3 Nh5 Bh2 Kd8 Rb4 Rf4 Re4 Qh1 Rg3 Qg2 Qa3 Kc7 Qb4 Rf5 Rh4 Rf4 Qc5+ Kb8 Ke8 Ba8 Qd4 Kc7 Rf8 Qg8 Qb4 Qd5 Qc5+ Kb8 Rf7 Bb7 Kf8 Qc6 Rd7 Kc8 Re7+ Kd8 Ree3 Kc7 Re4 Rg8+
3q2k1/r5q1/1Q3bPB/N4rpp/2K1PN1N/2pRqn2/1p2Q1RP/b2N1b1n b - - 0 1 illegal: No proof kernel
kBr1r3/2p1Q2p/nQ5P/p3n1R1/b2R1p1q/PRpr2RB/5PN1/2K1brr1 b - - 0 1 legal: proof: e4 d5 c4 dxe4 h4 b5 Nc3 bxc4 Nce2 Qd3 Nf4 Qd8 h5 g5 Ng6 Be6 Nh4 gxh4 Qc2 Bf5 Qd1 Bc8 g4 Kd7 b4 Kc6 d4 Kb7 Kd2 f5 a3 e5 h6 a5 b5 h3 b6 f4 d5 h2 g5 Ne7 g6 Nec6 g7 Bd7 g8R Na6 d6 Rc8 Nf3 Qh4 Bh3 Ka8 Rhg1 h1R R1g3 Rf1 Ne1 e3+ Kc2 e4 Qd4 e2 Be3 Bg7 Ng2 e1R Rd1 Ne5 Kc1 Ba4 d7 Bf6 R8g6 Rhe8 d8Q Be7 R6g4 Bb4 Qe7 Re2 Rg7 Rd2 R7g5 Rd3 Qb2 Be1 b7+ Kb8 Bc5 e3 Qb6 c3 Bd4 e2 Be3 Rd5 Rd4 Rdd8 Qc6 Ka7 b8R Rg1 Rb7+ Ka8 Qce6 Rd7 Rb3 Rf1 Rd1 Rd6 Ba7 Rd3 Bb8 Bd2+ Kc2 e1R Qb6 Rg1 Kb1 Ref1 Kc2 Be1 Kc1 Re3 Rd8 Rd3 Rd4
R3K3/1P1PN3/1Nr1Qpn1/3Prbn1/3N1B1n/2kN1N2/q5b1/1r2bqNq b - - 0 1 legal: proof: b4 b5 f4 d5 a4 h5 axb5 g5 g4 gxf4 c4 e5 cxd5 Ba6 g5 Bc8 Bh3 e4 Bg4 hxg4 Ra3 Nf6 Rd3 Ng8 Rf3 exf3 Kf2 Ke7 d4 Kd6 h4 a5 e4 c5 h5 f6 g6 a4 h6 a3 b6 a2 b7 a1R b5 c4 h7 c3 g7 c2 b6 Qd7 Nd2 Nh6 g8N R8a6 Qe2 Nc6 b8N Nf7 b7 Rb1 Ne7 Qe6 Nd7 Nce5 Nb6 Ng6 Rh2 Rg8 h8N Ng5 Qe3 Qf7 Qe1 Bf5 e5+ Kc7 e6 Kd6 Rh7 Bh6 Rg7 Re8 Rg8 Bf8 Na8 Rc6 Nb6 Ne5 Nhg6 g3+ Kf1 f2 Ke2 f3+ Ke3 f1Q Kf4 f2 Ndf3 g2 Rh8 Nd7 Nge5 Qg8 Bd2 c1Q Nd3 Ne5 Qe2 Bh7 Qe4 Ng6+ Kf5 Bh6 Ne2 Qh1 Neg1 f1B Qe1 Ra8 Qe4 Ra5 Be3 Qa8 Rc8 Qa6 Ra8 Rac5 Bd2 Qa2 Bf4+ Ne5+ Ng6 Bf8 e7 Rc4 Ne2 Kc7 Qe3 Re6 d6+ Kc6 e8N Kb5 d7 g1N d5 Bg2 Ng7 Qf1 Nd2 N1f3 Ng1 Bb4 Qe4 Rcc6 Qe3 Re7 Ne6 Bc3 Nf2 Kb4 Nd4 Bb2 Qe4 Bc1 Nd3+ Kc3 N2b3 Be3 Nd2 Bf2 Qe2 Ree6 Qe3 Be1 Qe2 Bg8 Ne7 Ng6 Qe5 Nh8 Qd6 Re2 Qe6 Re5+ Kg4 Nh4 Kh5 Bh7 N2f3 Be4 Kh6 N8g6 Kg7 Bf5 Kg8 Nh7 Kf7 Ng5+ Ke8
nR3B2/1Kb1b1BN/4qrN1/1b3k1P/2P5/1N2npP1/1Q1P2nr/2rR1nb1 b - - 0 1 legal: proof: b4 d5 e4 dxe4 f4 h5 f5 c5 g3 h4 Bg2 h3 bxc5 hxg2 a4 b5 axb5 g6 Nc3 gxf5 Nb1 f4 Ke2 Kd7 c4 Ke6 h4 f5 b6 a5 c6 a4 c7 e3 Kf3 e2 b7 e1N+ Ke2 a3 Qa4 a2 Qa5 f3+ Ke3 f4+ Ke4 f2 Nc3 f1N Qb4 f3 Nb1 Na6 b8B Qe8 Qa3 Nf6+ Kd4 Kf5 Rh2 Bd7 c8N Ng4 Kd5 e5 Nh3 g1B Bd6 e4 Ng5 e3 Bb2 e2 Nh7 Bb5 Nc3 Be7 Na4 Ng2 Bg7 e1R Nc5 Rc1 Qb2 Qd7 Rb1 a1B Nb3 Ra7 Rh1 N4e3+ Kd4 Nc7 Kc5 Rf8 Kb6 Qe6 h5 Rf6 Na5 Ra6+ Kb7 Na8 Nb3 Rc6 Bb4 Rd6 Ba3 Rd4 Bc5 Rh4 Bb4 Bd8 Bbf8 Rh2 Ne7+ Ke4 Na5 Bc7 Ng6 Kf5 Nb3 Bd6 Qa3 Bae5 Qb2 Be7 Ra1 Nb6 Ra8 Bc7 Rb8 Na8 Qc3 Bf2 Nh8 Rh4 Ng5 Nh2 Rd1 Nhf1 Qb2 Rh2 Ng6 Bg1 Nh7
2R1QRn1/2P3P1/k4Pq1/p2B3b/P1KN1b1r/1Bbn1n1r/3N2nq/r2r3B b - - 0 1 legal: proof: e4 c5 d4 e5 b4 g5 bxc5 f6 h4 gxh4 Bf4 exd4 e5 Kf7 e6+ Ke8 Be5 fxe5 Ke2 d5 Kd3 h5 c4 b5 f4 e4+ Ke2 d3+ Kd2 e3+ Kc3 d2 g4 b4+ Kd3 e2 e7 Kd7 e8B+ Kc7 g5 Kb7 c6+ Ka6 f5 e1B f6 d4 c5 h3 c7 h2 c6 b3 g6 b2 g7 h4 a3 h3 Ra2 Nd7 Be2 Nc5+ Kc4 d3 B2h5 Bd6 Qc2 d1N Bhf7 d2 Ra1 Rh4+ Kd5 Nd3 Nc3 b1N Ne4 Bf4+ Kc4 Bg4 Ne2 Bh5 Bd5 Qc8 Qc1 Qg4 Nd4 Qg6 Rf1 h1R Bef7 h2 c8B+ Ka5 Bg4 Ka6 Bf3 Rh3 Qb2 Rh4 Qb8 Ne3+ Kb3 d1R Nd2 Rh3 Qe8 Ng2 Kc4 Rh4 N2b3 Bc3 Nd2 Rg1 a4 h1Q Re1 Qh2 Ra2 Rb8 Rc2 Rb3 Re7 Rge1 Bfe6 Ra3 Rf7 Ra1 Bfe4 Re3 Rf8 Reh3 Rc1 Kb6 Rc2 a5 Bf3 Ka6 Bfe4 Nge1 Bh1 Ng2 c7 Qf7 Rb2 Qg6 Rb8 Na3+ Kb3 Nc2 Rc8 Nce1 Kc4 Nf3 Bf5 Nc1 Bc2 Nd3 Bb3
4n1rk/p1R3n1/b2p1B1q/4Pp2/P1B1Nn2/P2Pb1N1/1K1Qb2N/r2Q2qr b - - 1 2 legal: proof: h4 c5 f4 e5 h5 exf4 a4 Qe7 h6 gxh6 Ra3 h5 Rb3 h4 Rb6 Qe3 Rb4 Qa3 bxa3 cxb4 g4 h5 e4 b5 c4 f5 c5 Kf7 c6 Kg7 e5 d6 d3 h3 Kd2 b3 Kc3 f3 c7 b2 g5 h2 g6 b4+ Kb3 h4 Qd2 f2 Qe3 h3 Qg3 Nc6 Bf4 Nd4+ Ka2 Ne2 Qg5 Nf6 Qg2 Ba6 c8Q Ne8 Be3 Nf4 Be2 f1B Bf3 Be2 Nd2 b1R Nf1 Ra1+ Kb2 b3 Ng3 Rg8 Bd2 Kh8 Qc1 Bh6 Bd5 Rc8 Qd1 Rcc1 Nf3 Rcb1+ Kc3 b2 Bc4 Bg5 Re1 h1Q Nh2 Qg1 Be3 Nh5 Bb6 Be3 Bd8 Nhg7 Bf6 Rc1+ Kb3 b1N Kb2 Nc3 Qf2 Nd5 Qg2 Bf3 Qgd2 Be2 Rf1 Bc8 Rf4 Ba6 Rd4 Nf4 Rd5 Ng2 Rc5 Nf4 Rc7 Qg2 Qb3 Rh1 Qbd1 Qg1 Q1c1 Rf8 Nf3 h2 Bh4 Ngh5 g7+ Kh7 g8N+ Kh8 Bf7 Nhg7 Nf6 Rg8 Qcc2 Qe1 Bg5 Rg1 Qcd1 h1Q Nfe4 Qh6 Bc4 Rh1 Bf6 Qg1 Nh2
2R3qR/P1q2P1k/3QB2r/1b3p2/P1r2P1n/4Prn1/Np2b3/1Kb1bBN1 b - - 0 1 illegal: No possible last move, all moves rejected
r2N2K1/1N1nb2N/bQ3rB1/3k1q1p/qn2r2Q/2BR1qNR/1r5N/2Qq2B1 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Kd7 Kf3 Kd6 Ke4 h5 g4 a5 d4 c5 b4 c4 g5 a4 b6 a3 g6 a2 b7 h3 g7 h2 b5 c3 b6 c2 Nf3 f6 Nbd2 Nh6 g8N Ra6 Bb2 c1R Bc3 Rb1 Qc1 Nc6 b8B+ Qc7 b7 Ra3 Ba7 Qd7 b8Q+ Qc7 Qb6 Kd7 d6 Ke6 d7 Qb8 d8Q Ng4 e3 Ra6 Bd3 Ra4 Nf1 Qa8 Ng3 Ba6 Rd1 h1R Nh2 f3 Kf4 f5 Kg5 f4 Kg6 f2 e4 f1Q e5 f3 Nf6 f2 Nh7 Qg1 Qh4 Be7 Kg7 f1Q Bg6 Qf5 Rd3 Kd5 e6 Rb2 Rb1 Qd1 Ra1 Kc4 d5 Rf1 d6 Nb4 d7 Qaf3 d8N Rf8 Rb1 Rf6 Kh8 Re1 Kg8 Re4 Ra1 Ne5 Rb1 Rg2 Rb3 a1Q Ra3 Rb2 Rb3 Bd6 e7 Nd7 e8N Be7 Ra3 Ra5 Rb3 Qa4 Ra3 Rd4 Nd6+ Kd5 N6b7 Bc4 Bb8 Ra8 Bf4 Ba6 Be3 Nf8 Bg1 Nd7 Nh1 Qg2 Rh3 Qgf3 Ng3 Re4 Bcd4 Qde2 Rd3 Qed1 Bc3+
q3N1Qb/1B6/1q4b1/kQBqBN2/br2n2K/1nRnR3/1q3B1N/1Q1qrR2 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Kd7 b4 a5 g4 c5 e4 Kc7 d4 Kb6 d6 h5 e5 f5 g5 h3 g6 a4 e6 c4 g7 c3 d5 h2 d7 f3 Kg3 a3 d6 f2 e7 h4+ Kh3 f4 e8N f3 Ne2 a2 Nd2 c2 Bg2 f1B Nc3 f2 Ba3 c1N Nf3 Na6 Ne4 Bd3 Ng3 f1Q Nf5 Nf6 g8Q Nb3 Qb1 Qd1 Re1 h1Q+ Nh2 Nac5 Bb7 Bg7 Re3 Qc7 d8R Nfe4 d7 Rb8 Bc6 Bb7 Rc8 Rh5 d8B Bh8 Bd5 Bc6 Bg5 Bd7 Bb7 Rh6 Bf4 Re6 Be5 Bc2 Bg3 Nd3 Bf2 Qd6 Rc3 Qhg1 Qb2 Qd5 Rc1 a1Q Qb1 Qde1 Rd1 Qb2 Rc1 Qd2 Rd1 Qg6 Rf1 Qf6 Kg4 h3 Kh5 Qfd4 Kh4 Qd1 Ba8 Ka7 b6+ Ka6 b7 Ba4 b5+ Ka5 Bf8 Qb6 Bc5 Rd8 b8B Rd7 Nh6 Rb7 Nf5 Ree7 Be5 Rb8 Nf3 h2 Bb7 h1Q+ Nh2 Rc8 Ba3 Rc4 Bad6 Rb4 Bc5 Qbd8 b6 Qa8 Ba6 Qg1 b7 Qg6 b8Q Qb6 Qb7 Rg7 Rh1 Rg1 Qd7 Rf1 Bb7 Re1 Rf1 Nd6+ Kg5 Nf4 Ng3 Bg6 Nf5 Ne4+ Kh4 Nd3 Qb5+
2bk2Bb/BB4Q1/1r2b1K1/n1np2NN/1Q1n1R1N/rQr1q3/8/qR1BR2n b - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Ke2 d5 Kf3 e5 Kg4 a5 Kh5 h3 g4 d3 c4 e4 f4 d2 b4 h2 b6 h6 b5 e3 g5 a4 c5 a3 f6 e2 f5 e1Q c6 a2 b7 Ne7 b6 Ra7 c7 Nec6 f7+ Kd7 g6 Ba3 f8Q Qee8 f6 Qe2+ Nf3 Rg8 g7 Na6 b8Q Bb2 f7 Qf6 Qb3 d1B b7 Rh8 g8B Qfe5+ Kg6 h5 Qc2 h4 Nbd2 h3 Rb1 Rh4 Rg1 a1N Ne4 Nb3 Neg5 Rb4 Nh4 h1R Be3 h2 Qd2 Qf3 Be2 Qc3 Bb6 Nac5 Qe3 Ra3 Ba7 Qf4 Qh6 Qcd4 f8R Nba5 Qb3 Qfe3 Rf4 Ba1 Bh5 Bg4 Rgd1 Rg1 Qh8 Rg2 Re1 Be6 Bd1 h1N Qf6 Rc2 Qe5 Ke7 Qh8 Bcd7 c8B Kd8 Qhe5 Qb2 Qd4 Rcc4 Qbe5 Qa2 b8N Rb6 Bb7 Bc8 Nd7 Bc3 Qee4 Qa1 Nf6 Bb2 Nh5 Rc2 Qdd3 Bh8 Qeb4 Rc4 Qd4 Rc3 Qe5 Nd4 Qg7
1B2NBbk/q5nb/Qr3RR1/3Qbn1b/2Bp3n/4pNrr/R1NQ4/2K1N3 b - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Kd2 Kf7 f4 Kg7 g4 d5 b4 e5 c4 a5 g5 h5 b6 a4 g6 a3 b5 e4 b7 a2 b6 d3 c5 h3 c6 h4 c7 h2 Ba3 d4 Nf3 e3+ Kc1 h3 Qd2 Na6 b8Q Qd7 b7 Nh6 Ne1 Nc5 Qa7 Ne6 b8B Bd6 Rg1 h1N Qa6 h2 f6+ Kg8 g7 Ng3 f5 h1B Rg2 Be5 f7+ Kh7 g8N Ng7 f6 Nhf5 f8R Nh4 f7 N3f5 Rg6 Bd5 Ne7 Ra7 Nc6 Rb7 Nb4 Rb6 Nbc2 Rg8 Bd6 Kh8 Bb4 Bcb7 c8N Bc4 Bc5 Be4 Nd6 Qa7 Ne8 Be6 Nc3 Bb3 Ne2 Bc4 Ng1 Bcd5 Rb1 a1R Ngf3 Ra2 Rb2 Ra5 Qb4 Rab5 Ra2 d2+ Kb1 d1B Kc1 Bc4 Qd2 Bb3 Bc4 Ra5 Ng5 Bh5 Ngf3 Rab5 Rg2 Rh6 Rg6 Rb6 Rf6 Rg6 Bd3 Ne7 Rc6 Ne6 Rd6 Rg1 Ba3 Rh1 Bb5 Bbd5 Bc4 Rh3 Bb4 Kh7 Rc6 Rgg3 Rg8 Bd3 f8Q B3e4 Rg4 Ng7 Rf6 Bg8 Qf7 Kh8 Qd5 Beh7 Rgg6 Nef5 Bf8
n1R5/1nNq1bq1/1nr3qb/R1Nq1R1B/2R1q1Q1/1N4K1/2r1kBR1/bRQ5 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Kd7 b4 Kd6 e4 Ke5 g4 Kd4 d6 a5 g5 f5 e5 c5 b6 h5 d3 h3 g6 h4 d7 c4 e6 c3 g7 a4 e7 f3 e8R h2 b7 h3 b5 a3 b6 c2 Qe2 a2 Re7 f4 Re8 Na6 b8Q Nf6 g8R Bh6 b7 Nc7 Nd2 Nfd5 Rg2 Nb6 Ne4 Ra6 Rf8 Nca8 Nc5 Qe8 d8R+ Qd7 Ba3 c1N Qc7 Nb3 b8N Na5 Rf7 Kc3 d4 Nb7 d5 Kd4 Rc1 a1B d6 Rf8 Bb4 Ra2 Ba3 Rc2 Nba6 Rg8 Bb4 Rg6 Be1 Re6 Rf6 Qg7 d7 Rc6 Re8 Qg6 d8R+ Bd7 Rb8 Be6 Rbc8 Bf7 Re5 Qg7 Bd2 Qg6 Qd1 Qg7 Ne2+ Kc4 Ne6 Kd3 Ra5 Qg6 Rhg1 h1Q Rff5 h2 Be3+ Rd2 Qa4 Rdc2 Bc5 Kd2 N2d4 Qg7 Be2 Qg6 Kf1 f2 Bh5 Ke3 Nb3+ Kd3 Rg4 Qe4 Rb1 h1Q Qb4 Qhf3 R1g2 Qd5 Be3 Qfe4 Qa4 Qg7 Nec5+ Kc3 Qd8 Qf3 Qg5 Qh3 Qa3 Kc4 Re5 Kc3 Rh4 Qhd7 Nc7 Kc4 Rf5 Kc3 Rgh2 Kc4 Ne4 Kd3 Kg2 f3+ Kh3 f1Q+ Kg4 f2 Nec5+ Ke2 Qc1 Qe1 Kh3+ Kf1 Rc4 Qdd1 Bd4 Qe4 Qg6 Ke1 Qe6 Kf1 Rf3 Qeg6 Qf5 Ke1 Rg2 f1Q Kh2 Qd3 Bf2+ Ke2 Qg4 Qde4 Kg3 Q1d5 Rf5+
1K1B1Nb1/1BR2rnk/Nb1b2Rn/1N1Rp1Qn/1R2q3/1B2R2b/4q1rB/7b b - - 0 1 legal: proof: e4 b5 c4 f5 a4 fxe4 axb5 d5 cxd5 g5 h4 gxh4 Ke2 Kf7 Ke3 Kg6 Kd4 h5 Kc5 e5+ d6 a5 g4 h3 f4 c6 b4 a4 d4 h2 f5+ Kh7 d5 h4 f6 a3 f7 a2 g5 h3 b6 e3 b5 e2 b7 e1Q g6+ Kg7 b6 Qe7 Nd2 Bg4 Ne4 Ra7 Bg2 Rh5 Bf4 Be6 Qg4 Qe2 Qg5 Qc7 Rc1 a1B Nf3 Nh6 Rhg1 h1B Nd4 h2 Nb5 Bh3 Rge1 Kh8 g7+ Kh7 Rg1 Rh4 Rce1 Rg4 g8B+ Kh8 Bf3 Rg2 Bg3 Be7 f8N Qd7 Rc1 Qg4 Rc3 Bb2 Re3 Bd8 d7 Na6+ Kd6 c5 b8R c4 b7 c3 Rc8 c2 b8R c1N Rc2 Nd3 Nc5 Bb6 d8R Nc7 Na6 Ne6 Rc7 Ng7 Kc6 Qb4 d6 Nf4 d7 Nfh5 Bb3 Ba3 Bfd5 Qe4 Bf4 Ra8 Kb7 Ra7+ Kc8 Bd6 Bb7 Rf2 Rg4 Bf3 Rg3 h1B Rg4 Rg2 Bh2 Qb1 Rb4 Bd5 Ra8 Bg8 Kb8 Qec2 Re8 Qe4 d8B Qf1 Re6 Qd1 Rg6 Qe2 Nc5 Ra1 Ra5 Rf1 Na6 Rf7 Ra1 Nf4 Rd1 Nfh5 Nd7 Kh7 Rd2 Rff2 Rd5 Rf7 Nf8+
bQq2N1N/pr1rn3/p4q2/N4pBK/Np3B1p/4bQRR/4n2N/N2B3k b - - 0 1 illegal: No proof kernel
1Q2r2R/BNn1q3/5qq1/2q1B3/3B3b/Qr1N2bK/RrkqB3/N3B2N b - - 0 1 illegal: No possible last move
3bqQ2/1bNq4/k4rb1/BNrR2K1/Br2qrRR/Bn5R/3nB2R/2Q2r2 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 Kd7 Kf3 f5 e4 c5 b4 Kc7 g4 Kb7 d4 a5 e5 h5 d6 c4 d7 a4 e6 h3 b6 h2 b5 h4 e7 c3 e8R h3 d5 c2 g5 a3 d6 a2 g6 Rh4 g7 Ra6 Re2 Qe8 d8Q Nf6 g8B Ne4 d7 Nc6 Ba3 c1R Bb3 Be7 Ba4 Na5 Nc3 Nb3 Nd5 Rc5 Qc1 Rg4 Rb1 a1Q Nc7 Qd4 Rf2 Bf6 Ne2 Qd5 Rg1 h1Q+ Rgg2 h2 Nc3 Bg5 Be2 Qe1 Qe7 h1B d8R Qdd7 Qf8 Bh4 Rb2 Bf6 Rf1 Qh4 Rd1 Qhh7 Rd4 Ned2+ Kf2 Rh4 Rg4 f3 Kg3 f2 Kf4 Be4 Rd3 f1R+ Rf3 Qdg7 Rd5 Qgd7 Ra2 Bd8 Rb2 Kb8 b7 Ka7 b8R Rf6 Kg5 f4 Rh3 f3 Ra8+ Kb7 b6 f2 N3b5 Bg6 Rc2 Qhe7 Rcc4 Qe4 Rc2 Kc6 b7 Kb6 b8B Bb7 Ra5 Rg1 Ra8 f1R Rb2 R1f4 Ba7+ Kc6 Bb6 Rgf1 Rc8 Ba8 Ba5 Kb7 Ne6 Ka6 Rc7 Qd6 Rh7 Qdd7 Rc2 Bb7 Rc4 Rh6 Rh2 Rh3 Rhh4 Rd3 Rc3 Rd4 Rch3 Rb4 Nec7+
1kqnq2R/2N2p2/QRq5/QBr1Q2r/1K1pn1R1/R1n2N2/BQ3b2/1B1q4 b - - 0 1 illegal: No possible last move
b2rN2b/NB2Q2k/p6q/qN2b1R1/BN3Brb/1p5B/1Q1R1p2/Kn4Q1 b - - 0 1 legal: proof: b4 e5 c4 d5 cxd5 h5 f4 exf4 g4 Na6 gxh5 Qd6 b5 Qa3 b6 Qb2 Na3 Nb4 Nb1 Nc6 a4 a6 a5 Na7 bxa7 Qa3 Bh3 Qxa5 Bf1 Qa2 e4 g5 d4 c5 h4 f5 h6 Kf7 h5 b5 d6 b4 d5 b3 h7 Kg7 h6+ Kg6 d7 f3 d8Q c4 e5 f4 e6 c3 e7 c2 Kd2 f2 Kc3 g4 e8B+ Kf5 d6 f3 d7 g3 Nh3 g2 Nf4 g1B Nd5 Bh2 Rg1 Qa5+ Kb2 Bf4 Ra2 Ne7 Nbc3 Rg8 h8N Bg7 h7 Bb7 Nf7 Bfe5 Nb4 Nd5 Bf4 Rc8 Ka1 Ba8 Qe7 c1B d8N Bgf6 Ndc6 Rd8 Bg3 Bcg5 Bh3+ Kg6 Nd6+ Kh6 Bed7 f1Q Ne8 Bb7 a8B f2 Na7 Bh4 Ba4 Bc6 Qb1 Qc1 Rg2 Qe3 Qg1 Kg6 Rb2 Qh6 Ncb5 Nc3 Rd2 Nb1+ Rb2 Bf4 h8Q Bc3 Qhe5 Bd4 Qe2 Bh8 Q2e5 Rg7 Rd2 Kh7 Qb2 Be5 Bf4 Be4 Bb7 Bf3 Bbc8 Ba8 Bb7 Rf7 Rg8 Rg7 Qe6 Rg2 Rg5 Rg4 Qe7+
K2k1B2/R3pbn1/1N4rq/R1Rr1B1Q/2Q1Q2N/5p1N/nnRq4/b1Nn3q b - - 0 1 illegal: No proof kernel
5Bb1/2n1q3/1R3n1K/1QR2k1N/qpR1N3/p3N2r/3Qrb1N/1Q2bRRb b - - 0 1 legal: proof: e4 f5 exf5 g5 c4 d5 cxd5 Nd7 h4 gxh4 a4 Nb8 a5 b6 axb6 c6 b7 Qd6 Ra5 Qd7 Ra1 Qd8 b4 Qd7 b5 Qc7 b6 Qd8 Bb5 cxb5 Ke2 Kd7 Kf3 a5 Kf4 h5 Kg5 e5+ f6 e4 f4 e3 d4 a4 g4 e2 d6 Ke6 f5+ Kf7 d5 e1B d7 a3 d6 b4 Nd2 h3 Ngf3 h4 Rf1 h2 Ne4 h1B Nh2 Na6 b8Q h3 b7 Qe7 d8Q Qe6 d7 Bc3 Be3 Bd6 Qb1 Bb2 Bc5 Bg3 Bf8 Bd4 Qe5 Bf3 b8R Bg2 Rb6 Bb7 Qb5 Bc8 Rc1 Qb3 Rc4 Nh6 Kh5 Qa4 g5 Qa5 g6+ Kg8 g7 Kh7 g8N Bdf2 f7 Bh1 f6 Qa4 Ne7 Ng4 Nd5 Ra7 Bg7 Bb7 f8R Nc7 f7 Nf6+ Kg5 Be1 Re8 Bc8 f8R Bgf2 Re5 Ba6 Rg8 Bb7 Bf8 Ra8 Nf4 Bd5 Nh5 Rb8 Rg6 Bg8 Rec5 Ra8 Qe8 Ra7 d8N Ra8 Qe6 Rc8 Nc6 Re8 Qd7+ Re7 Ng4 h2 Qd2 Re8 Nd6 Re2 Ne7 Ba8 Nd5 h1Q Nh2 Qe4 Qc3 Bc6 Qd2 Qe7 Ne4 Ba8 Kf4 Bb7 Rg1 Bc6 Rf1 Kg6 Rg1+ Kf7 Kg5 Ke6 Nhg3 Rh4 Nh5 Rh3 Kh6 Kf5 Ng5+ Rd3 Qbc2 Ba8 Nc3+ Bad5 Qb3 Rh3 Rd1 Qe5 Qb1+ Be4 Nd5 Qe7 Qd4 Bc3 Rdf1 Be1 Qdb2 Rd3 Qd2 Bh1 Ne4 Rh3 Ne3#
3krB2/B2p1B1K/N1b5/B3Br1R/nB3N2/1NR1Rbb1/3n2N1/1nqn1n2 b - - 0 1 legal: proof: d4 b5 g4 f5 f4 c5 a4 cxd4 axb5 h5 e4 g5 exf5 Bg7 fxg5 Nh6 g6 Bf8 g5 Ng8 Qg4 hxg4 Ke2 a5 Kd3 e5 Ke4 a4 c4 a3 b4 d3 h4 g3 h5 g2 b6 a2 f6 d2 Kf5 d1B b5 e4 b7 e3 g7 e2 Kg6 e1N c5 Be2 b6 Bb5 c6 Qc7 f7+ Kd8 h6 Ra6 h7 Bb4 f8B Qe5 c7+ Ke8 Ne2 g1N Rh5 Qd5 Ba3 Qh1 Nd2 Nf6 g8N Bc6 Ne7 Ba4 Nf5 Nef3 Nb3 Nh3 Ne3 Qg1 Re1 a1N Nf4 Ra8 Bc4 Ne4 Neg2 Nc2 Re3 Bd6 Bb4 Na6 b8B Nd2 b7 Nc5 Ba7 Nf1 b8B Bb7 c8N Qh1 Nb6 Kd8 Nbd5 Na3 Nc7 Ned2 Bf7 Bac6 Kh6 Nab1 g6 Nf2 g7 Na4 g8R Be5 Rgg3 Nd1 Rgh3 Rg8 h8B Rg5 Kh7 Rf5 Ba5 Bd6 Be5 Bf3 Bc5 Bbc6 Bcb4 Qg1 Rc3 Qc5 Re3 Qc1 Ba7 Be7 Rg3 Bh4 Rg6 Rb8 Rd6 Bf2 Rdd3 Bg3 Rc3 Rb5 Beg7 Rbe5 Bf6+ Re7 Be5 Re8 Na6+
2Nq2Nq/2N5/1brp3N/2rp1b2/K4Br1/PnpN1B1Q/1bk1R2R/3n1B1R b - - 0 1 illegal: No possible last move, all moves rejected
R6Q/nR2Bn2/bb4Nn/1rnrQ3/3NBK2/b2N1P2/1n1k3N/NqB1n3 b - - 0 1 illegal: No possible last move
1b6/rbk2nBn/BqB1K3/1r4RB/3RQN1N/P2p4/1RQ4b/r1q2nnB b - - 0 1 legal: proof: e4 a5 b4 axb4 h4 f5 exf5 g5 hxg5 c5 d4 cxd4 Ke2 b5 Kf3 e5 Ke4 h5 Kd5 b3 g4 b2 f4 d3 c4 d2 a3 e4 f6 b4 f5 d6 g6 Kd7 f7 b3 g7 e3 c5 h4 g5 h3 c6+ Kc7 f6 e2 g6 e1B Ne2 h2 Bg2 Nd7 Nf4 Rh7 Ra2 Rb8 Qc2 d1R+ Nd2 b1N Bb2 Bg3 Ke6 d5 Nf3 d4 Rg1 h1N Nh4 Nh6 g8B d3 g7 Nf2 Bh1 Bh2 Rg5 Bd6 f8Q Nh3 f7 Bb7 Qe8 Nd2 f8R Nf1 Bf7 Ng1 g8B Ra1 Bh5 Nf7 Bg7 b2 Qe7 b1Q Rb2 Qc8 Rd8 Be5 Qb4 Qc1 Qe4 Nf6+ Ke7 Qh3 Rd4 Qhe3 Ke6 Bd6 Ra4 Qb6 Rd4 Rh6 Bh7 Ra8 B7g6 Ra7 B5f3 Rh8 Bgh5 Rb8 Bfg2 Kc8 c7 Nh7 Kf5 Kd7 c8B+ Kd8 Bd7 Be5 Bc6+ Kc7 Ke6 Rd8 Ke7 Rd5 Bh3 Rb5 Bc8 Bd6+ Ke6 Kd8 Rdb4 Bb8 Rc4 Kc7 Rd4 Ba8 Ba6 Bb7 Rdd5 Ra8 Rd6 Ra7 Rd4
QK3nb1/NPn1q1B1/2N3Bp/1RQ1B2n/5bp1/1B1Br2k/qN4n1/3q2Rr b - - 0 1 illegal: No proof kernel
1N1B2n1/Qq5N/2Q5/1p4rb/NnpqrRBK/1Q2pN2/1n2P1kb/1Nr2R2 b - - 0 1 legal: proof: f4 a5 c4 h5 b4 d5 cxd5 axb4 g4 g5 fxg5 hxg4 Na3 Kd7 Kf2 Kd6 Kg3 Ke5 d4+ Ke4 h4 e5 d6 c5 h5 b5 h6 c4 h7 Ne7 d7 f5 g6 b3 g7 b2 g8N b1R d5 Na6 d6 Qb6 d8Q Bb7 d7 f4+ Kh4 f3 Qb3 f2 Bh3 f1N Qc8 g3 d8N g2 Bg5 Nb4 Nc6 Ne3 Bf6 Ra6 Nb8 Nd1 Bg5 Nb2 Nf6+ Kd4 Qe6 Rg8 h8Q e4 Qg7 Bd5 Qh7 Ra7 Qc6 Bf7 Bg4 Bh5 Qf7 Rg7 Nh7 Ng8 Bd8 Rg5 Rh3 Rd1 Rf3 Bd6 Qfc7 Bh2 Rf4 Rf1 Re1 Qa6 Nb1 Qc8 Qf7 Re7 a4 Qa6 a5 Re6 Qa4 Ke3 Nf3 Kf2 Qb3 g1Q Qfb7 Qa7 a6 Kg2 Qf7 Qe7 a7 Qd4 a8N e3 Nb6 Re4 Na4 Qea7 Qfd7 Qa8 Qa7 Qb7 Rd1 Rg1 Rd2 Rc1 Rd1 Qa8 Re1 Qb7 Rf1
1R1nb3/qQ1N1NnB/bBp4P/1Qr1b2p/2Q2kqQ/2p1R1R1/4Q1K1/3r1n2 b - - 0 1 illegal: No proof kernel
n1r5/P1N2qk1/B1n4q/5B2/2BBpRnp/R2rb1N1/1B3pK1/1bQnRQ2 b - - 0 1 illegal: No possible last move, all moves rejected
Q2B4/3NbBRP/2qBK1BQ/3ppr2/n1q1p1b1/N2p2k1/p1R1Br2/n3R3 b - - 0 1 illegal: No proof kernel
1R1Qr3/1pPQ2nr/nnk1BN1Q/3RB1n1/3n3N/4p2b/RKn3Q1/1n3B2 b - - 0 1 legal: proof: g4 c5 e4 g5 f4 f5 exf5 a5 b4 axb4 d4 cxd4 h4 Qc7 f6 Nc6 f7+ Kd8 f5 Bh6 f6 Qf4 Bb2 Nb8 Bc1 Qf5 gxf5 g4 Bh3 Ra4 Bf1 Bg5 hxg5 Ra8 Kd2 Kc7 f8Q e5 a4 h5 c4 d5 Kc2 d3+ Kb3 g3 g6 e4 c5 h4 c6 d2 g7 h3 f7 h2 a5 g2 a6 d4 a7 d3 f6 Na6 Ba3 Nh6 g8B Nf5 Qf3 d1N Qf2 d2 Qe8 Nb2 f8Q d1N f7 Na4 Nf3 g1N Qh6 Nh3 f8Q Rh7 Nbd2 Nb6 Bb2 Nde3 Qg2 Ng7 Be6 Ng5 Nh4 Nc2 Ra2 e3 Ne4 Rb8 Rg1 h1N a8R Ng3 Nf6 N3f5 Qef7+ Bd7 Qd8+ Kd6 Bc3 Nfd4+ Kb2 b3 c7 Rc8 Rb8 Kc5 Kb1 b2 Rh1 Kd6 Rh3 Kc5 Rf3 Kc6 Rf5+ Ngf3 Rd5 Ng5 Qde7 Re8 Qd8 Nb3 Be5 Nbd4 Ra4 Bc8 Ka2 b1N Kb2 Bd7 Ra2 Bc8 Qfe7 Bd7 Bg8 Bg4 Be6 Bh3 Qed7+
4nnQ1/b2q2qN/Q2N4/1RBkr1r1/5p1K/2Rp3P/p1B1p1RB/N1q2B2 b - - 0 1 legal: proof: d4 c5 g4 cxd4 a4 b5 axb5 h5 gxh5 Rh7 Ra5 Rh6 Ra1 Rh8 e3 dxe3 f3 e2 Kd2 e5 Ke3 e4 Kf2 e3+ Kg3 Bb7 Kg2 Be4 fxe4 Bd6 Qd4 Bb4 Qd1 Bf8 Kh3 Ke7 b4 Ke6 c4 e1Q h6 f5 e5 a5 b6 g5 h7 d5 c5 e2 b5 d4 b7 d3 c6 a4 c7 a3 c8N a2 b6 Qe7 Qa4 Qc5 Be3 Qc7 Qa6 Qe7 Nd2 Qc1 Nb3 Qf6 Bc5 Qg6 Nd6 g4+ Kh4 g3 h3 g2 Nf3 g1Q Ng5+ Kd5 e6 Ne7 Rh2 Qh1 Rg2 Ng8 e7 Nd7 b8R Qg7 e8B Ngf6 b7 Rg8 h8Q Qg1 Nh7 Qd4+ Ne4 Ra7 Rb1 Be7 Na1 Nf8 Rb3 Qa4 Ra3 Qd7 Nd6 Bd8 Rc3 Bb6 Rh2 Ra8 Rg2 Ba7 Bf7+ Ke5 Bb3 Ne8 Bc2 Kd5 Rd8 Rc8 b8B Rc6 Rc8 Rb6 Bc7 Rb5 Rb8 Ra5 Rb5 f4 B7b6 Qe5 Qg7 Qd4 Qg4 Rg5 Qg3 Q4g7 Bg1+ Ke6 Bbc5 Kd5 Qg4 Ra4 Bh2 Re4 Qh5 Ree5 Qg6 Qf6 Qg7 Qg6 Qh8 Qgg7 Qg8+
b2K1bk1/3nnr2/1BPN1bB1/1Qb1b1r1/3Q1Nq1/4N2b/3bN2r/R1RRQ3 b - - 0 1 legal: proof: e4 b5 d4 f5 exf5 c5 g4 cxd4 a4 h5 axb5 hxg4 Ke2 Kf7 Kd3 a5 Kc4 e5 Kd5 g5 h4 g3 b4 g2 c4 e4 f4 a4 f6 d6 h5 g4 c5 g3 b6 a3 b7 a2 f5 d3 b5 d2 c6 e3 b6 e2 h6 e1B h7 Nd7 b8Q Ra3 b7 Qe7 Ne2 g1B Nbc3 g2 Qa7 Bh2 b8Q g1B Qb5 Be5 Qd4 Ra7 Ba3 Bgf2 Bc5 Bb7 Bb6 Ba8 Bg2 Qd8 Be4 Qc8 Qc1 Rc7 Nd1 Bg1 Ne3 d1B Bd3 Bd2 Qcb1 Bc2 Qe1 Bf2 Rd1 a1B Rg1 Ke8 Ke6 d5 Rf1 Ne7 Rc1 Rg8 h8N Rg5 Nf7 Bb3 Bb1 Bc2 Rd1 Be4 Bd3 Bg2 Bb1 Bh3 Nd6+ Kd8 f7 Bac3 Qg4 d4 f6 Bg1 Bg6 d3 Nd5 Bc5 Ne3 Bc1 Rh1 d2 Rf1 B1b2 Ra1 d1R Rc1 Bg7 f8N Rd2 f7 Bba3 Rg1 Bgf6 Rh1 Rf5 Qd4 Rg5+ Bf5 Ra2 Ng6 Bd2 Ngf4 Rb2 Ne8 Bab4 f8R Ra2 Rf7 Rc2 Nd6 Ba3 Ne4 Ke8 Rh7 Kf8 Nd6 Kg8 Rh5 Bg2 Bg6 Bh3+ Nef5 Nd5 Ng3 Bf1 Ne8 Ba5 Rb1 Bcd6 Qed1 Qa6 Ra1 Nb8 Qbe2 Bf8 Ned6 Bc5 Ne3 Rf7 Qb1 Bg2 Rc1 Nd7 Rhh1 Qb5 Qf2 Qe2 Qb5 Rb2 Rhd1 Bh3+ Nef5 Qg4 Qe1 Rh2 Nge2 Nb8 Qba4 Ne7 Qb5 Na6 Kd7 Nb8+ Ke8 Bd2 Kd8 Nd7 Ne3
6r1/Pk2q3/1qR1q1pB/N4BQB/NQR1r2R/Kpn1nQb1/1rb5/3n1B2 b - - 0 1 illegal: No possible last move
Q2r3n/Bq1nN1Nn/6r1/3B4/3RPQn1/1QK2bpR/2Rnb1Qp/4bB1k b - - 0 1 illegal: No proof kernel
KQ1N1RNR/pp6/NNr3b1/1Brb1pb1/3n2Q1/2qnk3/2RrB2P/B3n3 b - - 0 1 illegal: No proof kernel
1kN1n3/2N4K/N1R1P1pB/1N1br2Q/2pb1rp1/R3qBbQ/1Q1R4/4rq1n b - - 0 1 legal: proof: f4 b5 g4 h5 a4 hxg4 axb5 e5 c4 d5 cxd5 exf4 Kf2 Kd7 h4 a5 e4 f5 d4 c5 b4 Kc7 d6+ Kb7 b6 a4 e5 c4 d7 f3 Kg3 a3 Kf4 a2 d5 f2 d6 Qf6 d8N+ Ka6 h5 Rh7 d7 Qe7 h6 Rh8 b7 Ka7 h7 Nc6 b8N Qe6 Kg5 Nd4 b5 Nf6 Kg6 Bb7 Nf7 Ne2 d8R Bd6 Nh3 Rf8 h8Q Ng3 Na3 Re8 Be2 f1R Nf4 Bf3 Rh6 Nh1 Nd5 Re1 Na6 f4 b6+ Kb7 Qb3 Ng3 Ndc7 Nh1 Bd1 Bc6 Qh3 f3 Bf4 f2 Bf3 f1Q Bg5 Bc5 Rd2 Bf2 Bf4 Bd5 Nd6+ Kc6 b7 Bg3 b8Q Re7 Rc1 a1B Rc3 Kd7 Qb3 Rf8 Nab5 Rff7 Re3 Bd4 Qb2 Kc6 Nc8 Kb7 Ra3 Ne8+ Kh7 Rf5 Qg8 Ref7 Be3 Rh5 Bg5 Rf4 Qf7 Qe7 Bh4 Rhf5 Rc6 g6 Bg5 Qe6 Bh6 Qe7 Ra5 Qa3 e6 Rfe5 Qf5 Qc3 Qfh5 Qe3 Nb4 Kb8 Ra2 Rff5 Ra3 Rf4 Nba6+
b1QRrRb1/2Qr1nKp/5RBN/3p4/8/1pBN1q1B/1b2P2q/1Q1nkn1Q b - - 0 1 illegal: No possible last move
Q3N2q/2B2p1n/1npp1BRr/2Brb1q1/N5N1/1KP3BQ/1nR2Q2/2k3qb b - - 0 1 legal: proof: f4 b5 g4 h5 a4 g5 axb5 e5 d4 Nf6 Bh3 Ng8 dxe5 gxf4 g5 Qe7 Bf5 Qd8 Bg4 hxg4 Kd2 Ke7 Kc3 Ke6 h4 Kf5 e4+ Ke6 b4 a5 b6 f3 h5 f2 h6 f1N b5 a4 b7 a3 b6 g3 g6 c6 g7 g2 h7 a2 Qd3 Na6 b8B Nd2 b7 Qb6 Nh3 g1Q Rh2 Qg2 Ba3 Nf3 Bc7 Nd2 b8B Nb4 Nf2 Nf6 g8Q Qg5 Ng4 Nc4 Kb3 Ra5 Qh3 Bd6 Nc3 Qg1 Na4 Nd3 Bc5 Nb6 c3 Nb2 Rc1 a1Q Rg2 Qd4 Rcc2 Qag1 Qf8 Ba6 Qfh6 Be2 Q6h4 Bf3 Rg3 Bh1 Rgg2 Rc8 h8B Nh7 Qf2 Rg8 Bf6 Rg6 Bg7 Rh6 Bh8 Ke7 e6 Qdg7 e5 Q7f6 Ba3 Rd5 Bb4 Qfg7 Bc5 Qg8 Bg7 Qh8 Bf6+ Kf8 Bfd8 Kg7 e7 Kg6 e6 Bh2 e8Q Be5 Bf6 d6 e7 Bd4 Ba7 Be5 Qe2 Kf5 Qf2+ Ke4 Qa8 Qh5 e8N Qh4 Ne3 Kd3 Rg6 Qh5 Qf4 Qhg5 Ng4+ Qg3 Bf2 Qe3 Bg3 Qg1 Rc1 Ke2 Rc2+ Kd1 Qe3 Ra5 Qf2 Rd5 Rd2+ Kc1 Re2 Nd7 Bc5 Nb6 Rc2+
3bR2n/p1N1q1Nr/N2b1q2/pQ3bkB/1r2B3/N1B1K2P/b1N2N2/n1Rb4 b - - 0 1 legal: proof: f4 d5 g4 h5 gxh5 e5 c4 exf4 cxd5 b6 a4 Nf6 a5 bxa5 Qb3 Ng8 Qc2 Qf6 Qd1 Qd8 Kf2 Ke7 d4 Kf6 b4 g5 e4 c5 d6 f3 h6 g4 h7 c4 h3 c3 d7 g3+ Ke3 f2 b5 g2 e5+ Kg5 d5 f5 b6 c2 b7 Nc6 b8N Qe8 d8N Qd7 e6 Qe7 d6 Bg7 d7 Nd4 Qd3 Nh6 Bb2 Nf7 Bc3 Be5 Ne2 g1B Bg2 Nb3 Nd4 Bd6 Na6 Rb8 Na3 Rb4 Rc1 Na1 Be4 Qf6 e7 f1B+ Kd2 f4 e8B f3 N8e6+ Kh6 d8N f2 Ke3 Be2 Ng7 Kg5 Qb5+ Bf5 Rh2 f1B+ Rf2 Bd1 N8e6+ Kg6 Nec7 Bc4 Bd5 Bgh2 Be4 Kg5 Re2 Ba2 Re1 Be7 Re2 Bd8 Re1 Nd6 Bh5 Nf7 Re2 Bd6 Re1 Re8 h8N Re7 Ng6 Nh8 Nf4 Rf7 Nd3 Qe7 Rb1 Qf6 Nf2 c1Q+ Kd3 Qf4 Rc1 Q4e5 Ke3 Qfe7 Ndc2 Q5f6 Nge8 Rh7 Ng7 Bf3 Red1 Bg4 Rd5 Bd1 Re5 Qef7 Re8 Q6e7 Bd2 Qff6 Bc3
n3bNN1/5b1b/P1b2RN1/4K1Qb/3R1Br1/1p1B2q1/1R2nk1q/2R1bRN1 b - - 0 1 illegal: No possible last move
3qQBrq/1p6/1kn3Nq/3r2RR/RB5K/Pqnp3R/4q1B1/N1b1RB2 b - - 0 1 legal: proof: g4 a5 b4 axb4 h4 g5 hxg5 f5 e4 d6 exf5 Bd7 f4 Be6 d4 Bf7 d5 Bg6 fxg6 c6 f5 cxd5 Rh2 d4 Rh4 Qc7 Rh1 Qd8 Kf2 Kd7 Kg3 Kc6 c4 h5 f6 e5 f7 d5 a3 b3 c5 b2 g7 d3 g6 e4 g5 e3 Qa4+ Kc7 c6 e2 Nd2 b1Q Nb3 d2 Kh4 d1Q Rh3 d4 Bd2 d3 Nf3 Bd6 f8B Ra5 Bb4 Be7 Ne5 Kb6 c7 Rd5 c8B Qb2 Qe8 Nf6 g8R Nc6 g7 Ne4 Ng6 Nc3 Bd7 Qdc2 Re1 Qcc1 Na1 Qb3 Be6 Bc5 Bg4 Be3 Bf3 Qcb2 B3g2 Bc1 Kg3 h4+ Kg4 Rh7 Rh8 Qd2 g8R Rg7 Rh6 Qe3 Rgh8 Rg8 Rh5 Qe5 R8h7 Qh8 Rc7 Qh6 Rc8 Qh8 Ra8 Qh6 Ra4 Qh8 Rg3 h3 Kh4 h2 Rh3 h1Q Ne7 Qh2 g6 Qhd6 g7 Qdh6 Rd1 Qdd6 Ng6 e1Q+ Rg3 Qf2 Re1 Qfd2 Rh3 Qd8+ Bfe7 Rf8 g8R Qe2 Rg7 Qb8 Bed6 Rg8 Bf8 Qc7 Ne7 Qb8 Rg5 Qd8 Ng6
3r1b2/nrQR2Rn/Qq1B2r1/1b2Rnb1/1KP2R2/6b1/q2n2R1/N1kBR1N1 b - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Kd2 Kf7 f4 Kf6 c4 a5 b4 d5 g4 h5 b6 e5 b5 e4 b7 e3+ Kd3 a4 b6 h3 Nd2 h4 Bb2 e2 Qe1 a3 Nb1 h2 Qb4 e1B Qa5 h3 Qc3 a2 Ne2 Nc6 b8Q Rh7 b7 Qb6 Ba3 Bd7 Qa5 Bg3 Qb5 Ra6 Bb4 Na7 Rg1 h1Q Bd6 h2 Nd2 Qg2 Qc7 h1N Re1 a1B b8R Nf2+ Kc2 d3+ Kb3 d4 Rd8 Re7 Kb4 Ne4 Nb3 d2 Re8 Qh2 Rg2 d1R Ng1 d3 Be2 d2 Rd8 Bd4 Na1 Be3 Re8 Bc6 Bf3 Rd7 Re5 Rd8 Be2 Rc1 Bf3 d1N Be2 Nd2 Bf3 Bd7 g5+ Kg7 f6+ Kg6 f7 Nf6 Be2 Nh7 Bf3 Rc3 Bg4 Rd3 Be2 Rb8 Bg4 Rb7 f5+ Kg7 f6+ Kg6 Be2 Bef4 Bg4 Ne3 Be2 Nf5 Bd1 Qd4 Qbb6 Bb5 Qa5 Qb6 Qa2 Bh6 f8R Bg7 Rf7 Bf8 Rfe7 Rd4 f7 Rd3 Bc5 Rd8 Bd6 Be3 Rd7 Bef4 Nf3 Kh5 g6 Kg4 g7 Bg5 g8R Kf4 Rgg1 Qe2 Rg2 Qef2 Ng1 Qe2 Rd5+ Ke3 Qa5 Nf3 Rc5 Kd2 Rg7 Kc1 Re5 Qa2 Qa4 Bfe7 f8R Nd2 Rf6 Bf8 Rff7 Qf2 Qaa5 Rc6 Qa6 Qb6 Be7 Rg6 Bd6 Ne7 Rf3 Nf5 Rf4
Bn1RBB1B/1pb1b2n/2R2N1r/2B1P2p/2RK4/3b1r2/q2n1NQ1/k1Rb1q2 b - - 0 1 legal: proof: f4 a5 h4 g5 hxg5 d5 b4 axb4 c4 e5 cxd5 exf4 Kf2 Kd7 g4 Kd6 a4 Ke5 d4+ Ke4 g6 c5 g5 f5 d6 h5 g7 b3 a5 b2 d7 f3 g6 c4 d5 c3 d6 c2 a6 f4 a7 Qe8 d8B Bg4 d7 Bf5 Bb6 Bb4 d8B Nf6 g8R Bd6 g7 Bf8 Ra6 Qd7 Qd2 Rh6 Nh3 Qf7 Be7 Bg4 Bbc5 Nh7 Rc6 Qa2 Nc3+ Ke5 e4 b1B Bb2 c1B Ba1 Bd3 Nd5+ Bb2 Nf6 Bc3 Bcd6+ Kd4 Bc5+ Kc4 Rh8 Kb3 g8R Ba5 Be2 Bb6 Rc1 Bc7 Bed6 Be7 Rc8 Ba5 Rhd8 Bc7 Kf1 f2 Bc3 Ba6 Bb5 Bd1 Kg2 f1N Kf2 f3 Bb2 Ng3 Ke3 f2 Kd4 Nf1 Qg5 Nd2 Qg2 f1Q Nf2 Nd7 Rc4 Rb8 Bc3 Kc2 a8B Kb1 B3b4 Ka1 Bf4 Ng5 e5 Nh7 Bg5 Rg6 Bh6 Rg3 Ba4 Rf3 Bg7 Bb5 Rc2 Bd3 Bh8 Ba5 R8c7 Rc8 Rc4 Nb8 Rdd7 Rg8 Rd8 Rg6 Rcc8 Bd6 Bb5 Bdc7 Bf8 Rh6 Bbc5 Bd6 R6c7 Be7 Be8 Bb6 Rc6 Bc7 Rb6 Bcd6 Rcc6 Bc7 Rb2 Re3 Rbc2 Rf3 Rc1+
k2b4/pb1QN3/1n1r3R/2pR1Bpp/2q3B1/1qB2NPn/p1B1Bp2/2K3QB b - - 0 1 illegal: No proof kernel
1nkb2r1/r1p3PN/2Rp2KQ/R1B1b2B/R2N1b2/1q1r4/bN3N2/3r2RB b - - 0 1 legal: proof: c4 e5 e4 g5 d4 f5 a4 b5 cxb5 Qe7 a5 Qc5 a6 Qc2 exf5 e4 h3 Nc6 h4 Ne5 dxe5 gxh4 Ra5 Bxa6 Ra1 Bc8 g4 Kd8 b4 a5 f4 h5 f6 a4 b6 h3 b5 h2 g5 e3 g6 d6 g7 a3 e6 a2 f5 e2 Kf2 e1B+ Ke3 h4 Kf4 h3 Kg5 Ra7 f7 Qe4 e7+ Kd7 e8B+ Kd8 f6 Ba5 b7 Ra8 b8R Bb4 b6 Qc6 b7 Qf3 Nd2 Qd5+ Kg6 Rh5 Ba3 Ba5 Qc1 Qb3 Nc4 Rh8 Qh6 Ra7 Bg2 Be7 f8R Bd2 f7 Bf4 Nb2 Nf6 Bc5 Rg8 Rc1 a1B Ra8 Nd7 b8N Ba6 Be4 Kc8 Nc6+ Nb8 Nd4 Bc4 B4c6 Rb7 Ra5 Ra7 Bf3 Bd5 Bh5 Bf6 Bc6+ Bd8 Re8 Bc4 f8N Bd5 Re4 Bc4 Ngf3 Bd5 Rhg1 h1R Rc2 h2 Ng5 Bc4 Nh3 Bd5 Rb1 Rd1 Nh7 h1R Nf2 Rd3 Rg1 Be6 Rg3 Re1 Rg1 Red1 Rc4 Qc3 Rca4 Ba2 Re2 Qc2 Bh1 Qb3 Rc2 Be5 Nc4 Bb2 Rc3 Bc1 Nb2 Be3 Bb6 Bd2 Rc6 Bdf4 Bc5
1NrBq3/1N1Bb1n1/R1Pqb3/1kn4n/3rB1Nn/KQ1q1rR1/4p1R1/2B4N b - - 0 1 legal: proof: e4 b5 h4 c5 d4 cxd4 a4 f5 exf5 g5 axb5 gxh4 Kd2 d5 f4 Kd7 g4 h5 c4 a5 Kc2 e5 Kb3 h3 b6 Kc6 g5 h4 b7 h2 f6 d3 f5 e4 f7 d4 c5 d2 g6 e3 f6 e2 g7 h3 Na3 d3 Nc4 a4+ Ka3 Bg4 b4 Na6 b8B Qd6 Bc7 Rc8 Na5+ Kb5 c6 Be6 Nb7 Nh6 g8B Nc5 Bg2 Be7 f8N Nf5 f7 Ng7 Qb3 d1Q Nd7 d2 f8R Qc2 Ra2 d1R Bd8 Rd4 Rf3 Qd3 Rg3 Rh5 Ne5 Rf5 Ra1 Rf7 Be4 Rf3 Ka2 a3 Ng4 Nd7 Bf7 Nf8 Be8 Ng6 Bd7 Nh4 Rg2 Qc4 Kb1 a2+ Kb2 Qcd5 Ka3 Q5e5 Rb1 a1N Rb2 Qf5 Rd2 Qh5 Rd3 Qe8 Rc3 Rf5 Rcg3 Rf3 Qe3 Nb3 Qc3 Nc5 Qb3 Ka6 b5+ Ka7 b6+ Ka6 Qc3 Kb5 Nf2 Rf5 Nf3 Rf8 Rhg1 h1N Nh2 Rf3 Nhg4 h2 Qb3+ Ka6 Rh3 Ng3 Nh1 N3h5 Re1 Bg8 Rhg3 Be6 Nhf2 h1Q Reg1 Qh2 Nh1 Qd5 Rd1 Qc4 Rd2 Qd3 Ra2 Qe3 Na5 Qd3 b7 Rb4 b8N+ Kb5 Rh3 Qe5 Rhg3 Qed6 Nb7 Bf5 Kb2 Be6 Ra4 Ngf5 Ka3 Nfg7 Qc3 Rc4 Ra6 Rd4 Qb3+
2R1nkB1/1Qr1b1qn/3q2qb/1P1r2R1/b3Q2B/p2RrBB1/1RN4K/N5r1 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 Kf2 a5 d4 h5 b4 f5 g4 c5 Kg2 f3+ Kh3 c4 e4 f4 b6 f2 b7 a4 d6 f3 d5 a3 e5 c3 e6 c2 e7 Ra5 Be2 f1Q+ Kh2 h3 g5 h4 g6 f2 g7 Bd7 Ra2 Rh7 Qe1 Nf6 g8B Ba4 Rb2 Na6 b8Q Nc7 Bf3 Qa6 Ne2 f1R Bf4 c1B Nd2 Rg1 Nb3 Qd3 Be5 Qg6 Bg3 Bch6 Qb7 Rg7 Ned4 Nh7 Qe4 Re1 Rg1 Re3 Kh1 h2 Nc2 Rc5 Kg2 h1R b5 Qd7 Nba1 h3+ Kf1 h2 Kg2 Qd8 Kh3 Kd7 e8R Be7 Rg2 Rg1 Rf8 Qb8 Rc8 h1Q+ Bh2 Rge1 Rg5 Qg1 Be5 Qg4+ Kh2 Rg1 Bg3 Q4f5 Rh5 Qf8 Rg5 Qa7 Qe5 Qd8 Qe4 Ke8 d7+ Kf8 d6 Rf7 Qb8 Ne8 Qbb7 Qdb6 d8B Rd5 d7 Qba6 Ba5 Qae6 d8R Qd6 Be1 Qd4 Bf4 Qdg7 Bh4 Bf6 Bfg3 Rc7 Ra8 Be7 Rdc8 Rd7 Rc3 Rc7 Rc8 Bf6 Rcb3 Be7 Rd3
3Nrq1B/n1rB2r1/2q1bp2/4nk2/1P6/4B1Nn/1N1b1Qr1/RKBqR1QN b - - 0 1 illegal: No possible last move
R3Q3/1p2brrq/R3K1Rn/B1QB2qq/1Pr4N/1rNB4/1Bk3qR/2n2b2 b - - 0 1 legal: proof: e4 a5 b4 g5 h4 gxh4 c4 d5 cxd5 f5 exf5 a4 Qb3 axb3 Ke2 Kf7 Kd3 Kf6 Kd4 c5+ Kc4 Ke5 g4 Ke4 a4 h5 f4 e5 d4 b2 g5 h3 f6 h2 g6 h4 a5 h3 f5 Rh7 f7 Nh6 f6 Na6 d6 Rg7 d5 Be7 f8R Bg4 d7 Be2+ Kb3 Kd3 f7 e4 d6 e3 Nf3 Qe8 d8B Rc8 Nc3 b1R+ Bb2 Rc7 Rg1 h1Q d7 h2 Rh8 Qg2 f8Q h1Q Nh4 Qg5 Rg4 Qg2 Ra2 Rf7 g7 Kd2 g8B c4+ Ka4 Bd3 Be2 Nc5+ Kb5 Kc2 a6 Nb3+ Kb6 Nc1 a7 Rg7 a8R Qeh5 Bd5 Rf7 R2a6 Rg7 Bef3 e2 Rh7 e1R Be2 Rf1 Rg3 Qf5 Rg6 Qfg5 Kb5 Rff7 Rh8 Rc8 Ba5 Qf5 d8Q Qfg5 Bf3 Bf1 Be2 Qf5 Qde8 Qfh3 Na4 c3 Kb6 Rc4 Rh7 Bg5 Qc5 Be7 Kc7 Qhh1 Kd7 Qhh2 Ba3 Rb3 Ke6 Qhh3+ Rg4 Qd3 Rh8 Qh7 Rg6 Kb1 Bb2 c2 Qd7 Na2 Qd8 c1Q Qe8 Kc2 Nc3 Qcg5 Rf8 Rf2 Rf3 Nc1 Rh3 Rf5 Rh2 Rff7 Bd3+
8/1b3rN1/qrp1b1rn/3RQ1BR/b2q3B/2N1bN1k/Q1Pbr1NB/K2B4 b - - 0 1 legal: proof: e4 g5 a4 d5 g4 dxe4 h4 b5 axb5 Nf6 f4 gxf4 g5 Nbd7 h5 Ng8 Qf3 Ne5 Qd1 Ng6 hxg6 Bh3 Qh5 Be6 Qd1 Bc8 b4 Kd7 d4 Ke6 Kd2 Kf5 Kc3 a5 Kb2 e5 g7 h5 d5 a4 b6 e3 b5 e4 b7 a3+ Ka2 f3 b8Q Kg4 b6 f5 b7 h4 g6 e2 d6 e1R d7 h3 Be2 f4 Be3 h2 Qc1 Ra6 Bc4 f2 Ne2 f1B Nd2 f3 Nc3 f2 Nf3 Rh6 Qb2 Bc5 Rd1 Rb6 Be2 Kh3 Bg5 e3 Ka1 a2 Qa8 c6 b8B Bb7 Qa5 Qf6 d8B Qd4 Qa7 Qd3 Qa5 Qa6 Qb1 Bd4 Qe5 Bc5 Rd2 Bd4 Bd1 Bb5 Bh4 f1R Bdg5 e2 Qb3 Bc5 Rd5 Be3 Qa3 Ba4 Qb3 Nf6 g8N Ng4 g7 Rg6 Nf6 Nh6 g8N Rf2 Ne8 Ref1 Nb5 e1B Nc3 Re2 Ng7 B1d2 Nf6 Rff2 Nfh5 Rf1 Nd4 Rff6 Nf3 Rf7 Rf1 h1B Nf4+ Kg4 Ng2 Kh3 Qe7 Rb4 Bh2 Rb6 Nge1 Bg2 Rh1 Bf1 Qe5 Bg2 Nd4 Be4 Qb2 Bf5 Ng2 Be6 Nf3 Qa5 Bf2 Qb4 Be1 Bb5 Bhg3+ Kg4 Rh5 Qd4 B3h4 Kh3 Beg3 Ng8 Qa3 Nh6 Kb2 a1Q+ Kb3 Rf5 Bh2 Rf7 Qa5 Qaa4+ Kb2 Qac4 Qa2 Ba4+ Ka1 Qcd3 Qc7 Qa6 Qe5
q2Bn1K1/b4p2/B5b1/3RnR1r/Pq1rB1Qn/p6B/1N3QQ1/1NQb2bk b - - 0 1 illegal: No possible last move, all moves rejected
b2Q4/1nBrRNp1/np1p2r1/1Rrk1N1q/2Rb4/1Nn2N2/3P2Q1/KQ3qN1 b - - 0 1 legal: proof: e4 a5 g4 f5 exf5 h5 gxh5 c5 b4 cxb4 Bc4 a4 Bb3 axb3 c4 Kf7 a4 e5 h4 b2 f4 b6 f6 Ke6 h6 e4 h5 e3 c5 b3 f7 e2 c6 Kd5 h7 Bc5 f8R Kd6 h6 Bb4 c7 Nc6 f5 Qe7 f6 Ke6 f7 Qf6 a5 Bb7 c8N Qf3 a6 Ba3 a7 Qh5 Nf3 Qg5 Nc3 b1N Nd6 b2 Rh5 Qe5 Re8+ Nce7 f8N+ Kf6 Nf5 Nc8 Ne6 Bc5 Ra4 Bd4 Rc4 Nge7 Nc5 Nc6 Re7 Nb4 Nb3 Rd8 h8N Na6 h7 Nd6 Nf7 Rac8 a8Q Rc5 h8Q Bc6 Rg5 Nb7 Qh3 Qh2 Qg2 Qh5 Qc8 Nd6 Qc2 Ba8 Qc7 Nb7 Qd1 Rh8 Qd8 Rh6 Qc2 Rg6 Qd1 Na3 Qc2 b1R Qa2 Ra1 Qb1 Nb5 Bb2 Ra5 Ba3 Rd5 Bd6 Rc5 Bc7 d6 Nd1 Ra4 Nf2 Nc3 Nh3 Ra3 Nhg1 Ra1 Rd7+ Ke6 Re7+ Kd5 Rb4 Ra4 Rb5 Nb4 Rg4 Ra7 Rh4 Na6 Rf4 Be5 Rc4 Bf6 Kf2 Be5 Ke3 e1Q+ Kd3 Bd4 Kc2 Qf1 Kb2 Na5 Bb8 Rd7 Bc7 Nb7 Ka1
Q2q1bbk/N2qNn2/pR3Npp/5n2/rN3B1r/P1NN2b1/nRKR2N1/8 b - - 0 1 legal: proof: e4 d5 h4 dxe4 b4 c5 bxc5 g5 hxg5 Bg7 g6 Bf8 g4 Nf6 g7 Nfd7 g8N Qb6 g5 Qf6 g6 Qg5 g7 Nf6 Be2 Qd5 Bh5 Qd8 Bg6 fxg6 d4 Kf7 Kd2 e5 f4 b5 c4 b4 f5 e3+ Kc2 e2 c6 e1B a3 e4 c5 a6 c7 e3 c6 h6 d5 e2 d6 Bb7 c8N Nbd7 c7 Ra7 Nb6 Qa8 c8N Nh5 f6 Qb8 Bf4 Ng3 Nf3 Ne5 d7 Nf5 d8R Bg3 Rh2 e1Q Nge7 Bd5 g8N Rc7+ Nc3 Rc4 Na7 Re4 Rd6 Qd8 Nh4 Qf2+ Qd2 Qd4 Ra2 Qd7 Qg2 b3+ Kb1 b2 Kc2 b1N Rb2 Ba2 Nbd5 Qb6 Qh1 Qbd8 Rdb6 Ra4 Nb4 Rh7 Qa8 Bd5 Ne2 Nc3 Ng2 Na2 Nc3 Be6 Ned5 Rg7 Nge7 Rh7 Nd3 Rh8 Nec8 Kg8 N5b4 Nf7 Ne7+ Kh7 Nh4 Rg8 Rd2 Kh8 Ng2 Bg7 Qb7 Re8 Qe4 Bf8 Qa8 N7d6 f7 Bd5 Nec6 Re4 Ne7 Bc4 Be3 Rh4 Bf4 Bg7 f8N Bg8 Nh7 Nf7 Nf6 Bf8 Rb8 Q8c7 Rb5 Qcd8 Rb6
R2qQ1NR/1n4Pq/k2q1N2/rq1NR1r1/2QRbqr1/1RK5/5nB1/1Rb5 b - - 0 1 legal: proof: c4 b5 a4 d5 axb5 g5 cxd5 f5 e4 Na6 exf5 Nb8 f4 h6 g4 Nf6 b3 Ng8 Bb2 Na6 Bf6 gxf4 g5 Nb8 g6 Bb7 Bh4 Bc8 Bg5 hxg5 d4 Kd7 Kd2 a5 h4 e5 b6 c5 h5 e4 b4 a4 g7 f3 d6 Kc6 f6 Kb7 d7 f2 h6 g4 h7 a3 b5 a2 f7 c4 d5 c3+ Kc2 e3 d6 g3 Nf3 g2 Rh5 g1R Qc1 e2 Ng5 e1Q Bg2+ Nc6 Ne4 f1Q Re5 Qg3 Nf6 Nh6 Ng8 Ra5 Qf4 Ng4 Qc4 Be7 f8Q Bg5 Qe8 Nf2 Kb3 c2+ Nc3 c1Q Rb1 Qgf4 Nd5 Qcd1+ Kc3 a1Q+ Rb2 Qaa4 Rb3 Qfe2 Rb1 Qee4 Rb3 Qdf6 d8R Bf5 d7 Qd6 Ra8 Qeb1 d8R Be4 Nge7 Rf8 h8R Rf5 Ng8 Bh6 Ngf6 Rg5 Ng8 Qbd3+ Kb2 Qc5 Nc3 Bh7 Bh3 R1g4 Ra3 Rh5 Bg2 Qfg3 Ra1 Be3 Rb1 Qf4 Rd6 Qg6 Rdd5 Qe7 Rd6 Qh1 Rd4 Rhg5 Nd5 Bc1+ Kc3 Nd8 Ra6 Kb8 b7 Qgd6 Rb6 Ka7 b8N Qec7 Nd7 Be4 N7f6 Qh7 Rb8 Qcd7 Rc8 Kb7 b6 Q7e7 Qb3 Ka6 b7 Qed7 b8R Q7e7 Rb5 Nb7 Qc4 Qed8 R5b3+ Qb5 Ra8+
1kBN1rnK/Qq1Qb1Bb/4n3/q1B1PBB1/8/N2q1RQq/4Q3/r1qn4 b - - 0 1 legal: proof: c4 d5 cxd5 e5 a4 b5 f4 exf4 axb5 Ba3 Ra2 Bb4 Ra1 Bf8 h4 g5 hxg5 a5 b4 Qd6 b6 Ne7 b5 Qd8 Ra4 Ng8 Rb4 axb4 Kf2 Kd7 Kf3 h5 Ke4 f5+ Ke5 c5 d4 f3 g4 f4 e4 f2 b7 Kc7 b6+ Kd7 g6 c4 g7 c3 g5 b3 d6 h4 g6 b2 d5 c2 Nf3 h3 Nd4 h2 Na3 b1Q Bd3 f1Q Be3 c1Q Ne6 f3 Bc5 f2 Qe2 Qh4 Nd8 Qfd1 Rf1 Nh6 g8Q h1N g7 Qh2+ Kf6 Na6 b8B Ng3 b7 Qh5 e5 Nc7 Bf5+ Ne6 Bba7 Qbb2 b8Q Qbd2 Be3 Qh3 Bg5 Qb3 Bc5 Nh1 Qa7+ Bb7 Kg6 Kc8 d7+ Kc7 Kf6 Be7+ Kg6 Ng4 Kf7 Qa5 Kg6 Rh4 Bh6 Rc8 Kh7 Nf6+ Kh8 Qbb1 Nf7 Rf8 d8B+ Kc8 d6 Qbb6 Nc2 Ra4 Na3 Nh7 Bg5 Be4 Bh6 Qb7 Bg5 Bc2 Bh6 Bh4 Bdg5 Nf6 d7+ Kc7 Nd8 Qd3 Rg1 f1Q Rg3 Nf2 Rf3 Qh3 Nf7 Nd1 d8Q+ Kc6 Qe8+ Kc7 Nd8 Rb4 Qa4 Rb1 Qg4 Ra1 Qg3 Rf7 Qe8 Rf8+ g8B Kc8 Bg7 Bb1 Qb6 Kb8 Qec6 Rf7 Bgh7 Ng8 Qd7 Rf8 Bg4 Qdd2 Bd3 Bc2 Ba6 Bh7 Bf5 Qd5 Qb3 Qd3 Qba4 Qbe4 Bc8 Qb7 B5h6 Be7 Bg5 Qe1 Qa6 Qa5 Qa7+
N2rn1bK/1n1Rr3/q1pp2r1/1R2R2R/2PkR2Q/2b3B1/4q2Q/bB1bB2B b - - 0 1 illegal: No possible last move, all moves rejected
3N1r1n/Rb3Qpk/1qR1K1PB/2bn1p2/5pqr/Q2p2Q1/1Q4bB/2BBB3 b - - 0 1 illegal: No possible last move, all moves rejected
1r1n1Q1K/Q2nBpNp/1k2rP2/2N3QQ/r3p2R/2bB1NB1/2q3pp/3bB3 b - - 0 1 illegal: Other
2n2b1B/nB1k1K2/2R3Q1/q3rb2/1q2Q1r1/QB3Pn1/pB1pB1n1/1B3NB1 b - - 0 1 legal: proof: e4 b5 a4 f5 axb5 g5 exf5 c5 d4 g4 dxc5 g3 f3 Bb7 Qd2 Ba6 Qd1 Bc8 b4 h5 Nd2 Nh6 Ne4 Nf7 Kd2 Bb7 Nf2 gxf2 g4 Nh6 g5 Ng8 Ra6 Rh6 Rd6 Rh8 Rd4 Bc8 Rg4 hxg4 Ke3 e5 Ke4 a5 Kd5 g3 h4 g2 c4 e4 c6 d6 f6 e3 b6 e2 g6 e1Q h5 a4 b5 a3 f7+ Ke7 c5 a2 h6 Bg4 h7 Ra4 c7 Rc4 c8B Qe8 b7 Qa5 g7 Re4 c6 Re6 c7 Re3 Qe2 Nc6 b8B Qa7 b6 Re4 b7 Bf5 Bb2 Nd8 Rh6 Qa3 Ba7 Qea4 b8Q Q3b4 Bb7 Nc6 c8B Qaa5+ Bc5 Re6 Qe4 Na7 Ne2 g1N Ng3 Nh3 Be2 f1N Qa8 Kd8 Qg4 Re4 Qg6 Kc7 Bd7 Rc4 Bb5 Rg4 Bbd3 Kd7 Be4 Qd8 Bb1 Qda5 Ne4 Ng3 Nd2 Qbb5 Nf1 Nf4+ Kd4 d5 Ke5 Qc4 Bg1 Ne7 Kf6 d4 g8B d3 Qe8+ Kd6 Qa4 d2 Qe8 Nec8 Qe4 Be7+ Kg7+ Kd7 f8Q Qcb4 Bb3 Ng2 Kf7 Rg8 h8B Bd6 Qfg7 Re8 Qc3 Re5 Qce3 Bf8 Qc5 Qd4 Qa3 Qda4 Qh7 Q4b5 Rc6 Qbb4 Qg6
QK2Q3/Q2Prb1p/2N4R/4r1Bq/1B1n2Pr/3qnR2/N1qrBRk1/2r5 b - - 0 1 legal: proof: f4 b5 c4 e5 a4 exf4 axb5 d5 cxd5 Ba3 g3 Bf8 Nh3 fxg3 Ng5 g2 Nf3 g1R Ng5 g6 Nf3 g5 Nc3 g4 Ne4 g3 Nc3 g2 Nb1 Bd6 Qa4 Bf4 Qd1 Bg3+ hxg3 Kd7 Rh5 Ke7 Rh1 Ke8 Kf2 Ke7 Ke3 Kf6 Kf4 a5 e4 c5 d4 c4 b4 c3 e5+ Kg6 e6 f5 Ke5 a4 b6 f4 e7 a3 g4 a2 b5 c2 d6 Qe8 b7 Be6 d5 Nh6 b6 Ra5 Ba3 c1Q Nc3 Nf5 Nd4 Kg5 Rh6 f3 Qa4 Rh1 Be2 g1R Bc5 Rb5 Qa8 Qh5 e8R Kh4 Rf8 Kh3 Bb4 Qd2 Rd1 a1R Na2 Rb1 Rff6 Qc3 d7 Re8 d8B Rb2 Rf8 Re1 Bg5 Kg2 Rd3 Rh4 Re3 Na6 b8Q Nc7 b7 Rd2 Qba7 Qc2 b8Q Rc1 Nc6 Nd4 Kd6 Re7 Qe8 Rc5 Rf5 Bf7 Ra3 Re3 Kd7 Re7+ Kc8 Ra5 d6 Rae5 d7 Nd5 Kb8 f2 Bc4 f1Q Bb5 Qfc4 Rf1 Qe2 Raf3 Ne3 Ba6 Qec4 Bb5 Q4c3 Be2 Q3d3 R1f2+
3R2R1/K3bn1q/1rNp1q2/Q2b2bP/1QN2r2/3q2B1/pNrPk3/n1BQ1R2 b - - 0 1 illegal: No possible last move
8/N2b1B2/pq1B1qr1/P1b2Rb1/1nRqQ1K1/1N1r1Q2/Q1r2Pp1/2NrB2k b - - 0 1 legal: proof: g4 c5 e4 f5 h4 g5 b4 d5 bxc5 dxe4 Bd3 Na6 Bc4 Nc7 Bf1 Ne6 Nh3 fxg4 Ng1 g3 Ba3 g4 Bc1 Ng5 hxg5 Qa5 Rh3 Qb6 Rh1 Qd8 Ke2 Kd7 a4 Kc6 c4 b5 d4 h5 a5 e5 g6 b4 g7 g2 Nd2 g3 Rh4 e3 Kf3 b3 Qe2 a6 Ra3 e4+ Kf4 b2 Nh3 g1R Ra1 b1Q Qd3 e2 Ra3 e1Q Nb3 e3 Bd2 Qed1 Be1 Nf6 g8Q e2 Qe4+ Nd5+ Kf3 Rh6 Nf4 Rd6 Nd3 Bd7 Ndc1 Qf6+ Rf4 h4 Ra4 h3 Rf5 h2 Kg4 h1R Rb4 Kc7 c6 Rc8 c5 Bh6 Rc4 Nb4 d5 Qdd4 Qe6 Bg5 Qf7 Rh3 Qf8 g2 Qf7 Re6 d6+ Kd8 Qh5 Rd3 Qh3 Ke8 c7 Kf7 c6 Kg6 Qf3 Qbb2 Bd2 e1B Be2 Rg8 c8N Qb1 Na7 Rc8 Bc3 Bed2 c7 Bde3 Bd2 Rd1 Be1 Qbb2 Bf1 Qb6 Be2 Bc5 Bf1 Qbd4 Be2 Rg8 c8Q Ree8 Qc6 Rc8 Qa4 Kh6 Bf1 Rg6 Qa2 Re8 Qef4 Re2 Q4e4 Rc2 Be2 Ba4 d7 Bb5 d8B Bc6 Qe3 Bd7 Kf3 Kh5 Be7 Qc7 Bd6 Qb6 Qc6 Kh4 Qe4+ Kh3 Bf1 Qde5 Be2 Kh2 Kg4 Kh1 Q3f3 Qa1 Rd4 Rdc3 Bc4 Rcd3 Bf7 Qb2 Rc4 Qbc3 Be7 Qcd4 Bd6
2qnB2B/rq1qpn2/b3N3/1NP1bNr1/1Bp3R1/K5QP/Qn1pk3/4Q1R1 b - - 0 1 illegal: No proof kernel
1n1RQ1Q1/4p2K/B3P1pn/1q1N1qP1/1r3krR/1B1Q4/NpR5/1B1n1bbq b - - 0 1 legal: proof: e4 a5 b4 axb4 h4 d5 c4 f6 cxd5 g6 h5 Qd6 e5 Ra4 h6 Ra7 e6 Ra8 Bb2 Qf4 Be5 fxe5 Rh2 Qf6 Rh1 Qg7 hxg7 Ra3 Rh3 Ra4 Rh1 Ra8 Ke2 h5 Ke3 b5 g4 c5 a4 e4 Kf4 e3 Kg5 c4 f4 b3 d4 b2 a5 e2 d6 e1Q d7+ Kd8 f5 Kc7 d8R b4 d5 h4 a6 h3 f6 b3 a7 c3 f7 c2 d6+ Kc6 d7 c1N Ne2 h2 Ra2 Qb4 Nec3 Qc5+ Nd5 Kd6 Qd3 Ke5 Nbc3 b1Q Rc2 b2 Na2 Nh6 g8B Bg7 f8Q Ne2 Bf7 Nc3 Be8 Ba6 Qg8 Qb5 Be2 Nd1 Bf1 Nc6 Be2 Rb8 a8B Rb6 Bb7 Rh7 Bf3 Nb8 Be4 Qa5 Bc8 Rb4 Bf5 Bc4 Ba6 Qc5 Rc8 Qc6 d8Q Qb5 Bd7 Bh8 Qde8 Rf7 Be4 Rf4 Rd8 Bg7 Qe3 Bf1 Qd3 Qc5 Ba4 Qb5 Bb3 Bh8 Rg1 h1Q Rgg2 Bg7 Rc4 Qc2 Rh2 Qf2 Rc2 Qff3 Bf5 Rfd4 Be4 Qf5+ Kh4 Qb7 Rc5 Nc3 Qd1 Nf7 Bb1 Qb5 Qd3 Nd1 Rc6 Bh6 Rc2 Be3 Rh3 Bg1 Rhh2 Nd6 Rh3 Qf7 Kg5 Qf5+ Kh6 Nf7+ Kh7 Nh6 g5 Rg4 Qd2 Ke4 Rh4 Kf3 Qc3+ Ke4 Qd3+ Ke5 Ndc3 Kf4 Nd5+
3r2rN/qRn1p3/nb6/2p1p2R/k1NPQ1Q1/3BP1KR/n2QB3/B1rb1r2 b - - 0 1 legal: proof: c4 b5 a4 d5 axb5 g5 h4 gxh4 Qb3 f6 cxd5 Kd7 Qc3 Ke8 Qe5 fxe5 f4 Kd7 Kf2 h5 b4 a5 g4 c5 g5 a4 b6 a3 g6 a2 f5 h3 b5 h4 d6 h2 e3 h3 g7 Nf6 g8B Rh7 b7 Qb6 Na3 Ra7 Bb2 Na6 b8R Rh8 Nc4 Qc7 b6 Kc6 d7 Kb5 d8Q Ne8 f6 Ra8 f7 Bg7 f8Q Bg4 b7 Bd1 Bd3 Ka4 Ne2 Bf6 Qg7 Bh4+ Kf3 Qa5 Qg4 Be1 Rb1 Qb6 Ba1 Nec7 Qd5 Qa7 Qde4 Bh4 Bf7 Be1 Bh5 Rg8 Re8 Rd8 b8Q Bc2 Rb7 Bd1 Rg1 h1N Rg3 h2 Rh3 Nf2 Kg3 h1R Nf4 Rf1 Qa8 Rg1+ Qg2 Rf1 Ng6 Ne4+ Kh2 Rgf8 Nh8 Rg8 Rf8 Nc3 Rf5 N3d5 Q2e4 Ndb4 Qb8 Ne6 Qd6 Nec7 Bc3 a1R Rg5 Rf2+ Kg3 Rc1 Ba1 Na2 Qgf4 Nb8 Bhe2 Nba6 Qdd4 Rf1+ Qf2 Rgf8 Rgh5 Rfe8 Qg4 Rg8 Qe4 N2b4 Bb1 Na2 d4 Ba5 Bbd3 Bb6 Qe1 Rf6 Qc3 Rf1 Qd2
k3NQ2/2rp3R/3K1BQp/2r2N2/r2pQPq1/n2N3r/np2b1PB/1BR1b3 b - - 0 1 legal: proof: e4 a5 b4 axb4 h4 f5 exf5 g5 hxg5 c5 d4 cxd4 Kd2 e5 Kd3 b5 Ke4 b3 Kd5 e4 a4 b2 c4 e3 a5 e2 c5 e1R f6 b4 a6 b3 f7+ Ke7 a7 Bh6 f8B+ Ke8 g6 Ne7+ Kd6 Bg5 c6 Re3 g7 Ba6 g8N Nd5 c7 Rc3 c8Q Bh4 Ne2 Nb4 Na3 b1R Qc2 b2 Bg7 Na2 Ne7 Nc6 Nc4 Ncb4 Bf4 Rc1 Bh2 Bb5 f4 Be1 Qf5 Nc2 Bf6 Na3 Qe6 R1c2 Nc1 Rh3 Nd3 h6 Rc1 Rg8 Qg4 Rg5 Nf5 Rc3 Be2 Ba6 Bd1 Rgh5 Bc2 Bb5 Bb1 Rg5 Nce5 Rc7 Nf7 Rgh5 Qg6 Rg5 Nc5 Be2 Nd3 Rgh5 Qb7 Qc8 Qc6 Qb7 Qc5 Qf3 Rg1 Qg4 Qc6 Rac8 a8Q Ra7 Qc5 Ra4 Qac6 Rc7 Rf1 Re3 Rf3 Rh3 Rg3 Re5 Qe4 Re7 Ng5+ Kd8 Ne6+ Kc8 Neg7 Kb8 Ne8 Re5 Qb4+ Ka7 Qb8+ Ka6 Qd8 Ka7 Qe7 Rec5 Qf8 Qh4 Qh5 Kb8 Rg7 Qg4 Rh7 Ka7 Qg6 Kb8 Qee7 Ka8 Qe4+
2nb2r1/2rrb1kB/n1b1K2N/1p2RQ2/3qpQr1/2N3Rp/N2bP2P/QRB5 b - - 0 1 legal: proof: c4 d5 cxd5 f5 b4 a5 g3 axb4 g4 fxg4 a4 Kf7 d4 b5 Kd2 g5 Ke3 h5 Ke4 c5 Ke5 h4 f4 b3 d6 h3 a5 e6 f5 b2 f6 c4 d7 c3 d5 c2 a6 g3 d6 g2 a7 g4 Qd2 g3 Ra3 Na6 Qf4 Qb6 d8R Be7 d7 Bb7 Nf3 g1B Nh4 g2 Rg3 Rc8 a8Q Rc7 Nf5 Bc6 Nc3 b1R Re8 Bf2 Qa7 g1R Bg2 Bd8 Qa8 Bc5 Be4 Ne7 Qa7 Rg8 Qa8 Nb4 Qa1 Nc8 Re7+ Kf8 f7 Na6 Nh6 Rb4 Kf6 e5 Bh7 e4 Ke6 Rd4 Qf5 Rg4 Re8+ Kg7 Re7 Kh8 f8Q+ Rg8 Re8 Bce7 Qf4 Rg2 Q8f5 Rd5 Rd1 Qd4 Re1 Bg5 Rf1 Kg7 Rd1 Be7 d8N Rdd7 Rh1 Bb7 Nc6 Bd8 Ne7 Bc6 Ned5 Rg1 Na2 Rg2 Rb3 Rg4 Rg3 Bh4 Ndc3 Bhe7 Ba3 c1B Rf1 Be3 Rb1 Bd2 Bb2 Qb6 Bc1 Qd4 Rf8 Qa7 Qg6+ Kh8 Rf5 Qd4 Qh5 Kg7 Re5 Ra7 Qhf5 Rab7 Rg2 Rbc7 Rg3
2q1R3/r1n2RB1/bqN3K1/rQ4R1/3pR3/nNp2b1P/Pnkp2R1/6BB b - - 0 1 legal: proof: e4 a5 g4 h5 gxh5 f5 exf5 e5 b4 axb4 d4 exd4 c3 b5 Be2 b3 Bf4 b4 Bc1 b2 Ba6 b3 Bf1 Bb4 cxb4 Ra3 Nc3 Ra6 Nb1 Ra8 Nf3 d3 Kd2 Ke7 Ke3 Kd6 Ke4 c5 h6 g5 b5 g4 h3 g3 h7 c4 f6 Kc5 Kf5 Kb4 b6 d5+ Kg6 c3 f7 g2 f8B+ Qe7 b7 g1Q+ Bg2 Qc5 Be3 Nh6 Qe2 Ra7 Nbd2 b1B Ne5 b2 f4 Na6 b8R+ Ka3 f5 Nf7 f6 Nd6 f7 Nc4 Rh2 d4 Rb6 Nc7 Rb5 Ba6 Nb3 d2+ Qd3 Bc2 Re1 b1N Nc6 Kb2 Bf2 Qb4 Re4 Nba3 Rc5 Qd1 Bh1 Qb6 Rg2 Qf3 Be3 Bd1 Bg1 Qf2 Qf1 Kc2 Bh6 Rf8 h8R Nb2 Rcg5 Bde2 Bg7 Qf5+ Kh6 Qd7 Kg6 Bf3 Rg8 Rd8 f8R Qc8 Rf7 Rd5 Rge8 Ra5 Qb5
1nNN3r/1BQb1Bk1/PbbN3R/3p2K1/3q3r/1rb2qR1/NP2b2B/2R4n b - - 0 1 illegal: No proof kernel
1R6/r3qrR1/nPBp1R1P/1rN1b3/2k5/N3BBb1/Q5rn/q1NKnR1b b - - 0 1 illegal: No possible last move
1q1k1B1N/2qBR1b1/BPq5/5pP1/1RNnQ1NR/rn5p/3bN3/1K1n2rb b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 b4 c5 e4 h5 g4 f5 d4 a5 Kd2 c4 Kc2 f3 d6 c3 d7+ Ke7 d5 f2 g5 h3 b6 h4 b5 a4 b7 h2 e5 a3 e6 a2 Ne2 Ra6 Na3 Bg7 Nc4 Nf6 Qd4 Ng4 Qe4 Nc6 b8R Qc7 d8N Bb7 Nf7 Ra3 Nfe5 Rc8 d6+ Kd8 d7 h3 b6 Ba8 Rb1 a1B Rb4 Nd4+ Kb1 Ne3 Bb2 Nd1 Ng4 Bc6 Rg1 h1Q Rb7 Qhh2 Rg2 Qb8 Bc1 Qhc7 Bf4 Bb2 Bd6 Bc1 Bf8 Bf4 Rg3 Bd2 Rf3 Bd5 Rf4 Qc6 Nge3 Qbc7 Rh4 Rca8 Ng4 R8a5 Bg2 f1Q Ra7 Qg1 Bf1 Qgg3 Rh6 Rb3+ Nb2 Raa3 Ng1 Qc8 Qf4 Be3 Rh4 Bd2 Ba6 Qb8 Ne2 Bh1 Qe4 Qgf4 Bc5 Qfd6 Rc7 Ke7 d8N+ Ke8 Nf7 Qe7 Nh8 Kd8 Nc1 Qed7 Bf8 Qdc8 Rf7 Qc8c7 e7+ Kd7 e8B+ Kd8 Na2 c2+ Ka1 c1N Bd7 Rd3 Kb1 Rdb3 Re7 Rg3 Nc4 Ncb3 Nc1 Rg1 Ne2
2Q5/1QK3b1/1N1p1rR1/qq5r/RpBQbQ2/B1br1PPb/6Nn/k4Qn1 b - - 0 1 legal: proof: e4 a5 b4 axb4 h4 f5 exf5 g5 hxg5 c5 d4 cxd4 Kd2 Kf7 Kd3 h5 Kc4 e5 Kd5 b5 c4 h4 a4 d3 f6 e4 g3 h3 c5 e3 a5 e2 c6 e1B c7 d2 a6 d6 a7 h2 Qa4 d1R+ Nd2 b3 Ne2 b2 Rg1 b1Q Qb4 Rh5 Rh1 Bg7 Nf4 Nd7 Kc6 Nh6 Ng2 Ke6 f7 Ke5 f8Q Ng4 Bc4 Kd4 g6 Nde5+ Kb6 Bd7 Ra4 Nf3 Ba3 Ng1 Qc5+ Kc3 Qf4 Qg5 c8Q b4 Qb5 Qa2 Kc7 Qe5 Qb6 Qb5 Qbd4+ Kc2 Qa6 Rf8 a8Q Rf6 Q8c6 Bf5 Qcb7 Be4 f3 Qa1 Nf1 Kb1 Nfe3 Rd3 Nd5 Bc3 Nb6 Qa2 Bf7 Ka1 Bg8 Bh6 g7 Qad5 Bf7 Qa2 g8Q Bg7 Qgc8 Qad5 Ne1 Qa5 Bg8 Qdb5 Bc4 Nh3 Rf1 h1B Rf2 Bg2 Re2 Bf1 Ng2 Ng1 Re3 Nh2 Re2 Bc6 Re6 Bd5 Nh4 Bh3 Ng2 Rff5 Rg6 Be4 Qbd5 Rf6 Qab7 Rh6 Qf2 Rh4 Qdd4 Rh5 Qf1+
2Q4r/R2Kb2r/3PQkP1/r4B1Q/BR1B4/6n1/2QnrpNN/3qqnb1 b - - 0 1 illegal: No possible last move
nNK2br1/1n2P3/1QRqnQ2/3BQ3/3N1P2/3br1Bp/1Q2p3/r2n1NkR b - - 0 1 legal: proof: c4 g5 a4 b5 axb5 d5 cxd5 Ba6 Nc3 Bb7 Nb1 Bc8 h4 gxh4 d4 e5 dxe5 f5 e4 fxe4 Kd2 Kf7 Ke3 Kg6 Kd4 Kf5 b4 a5 b6 h5 b7 e3 g4+ Kf4 e6 h3 d6 c5+ Kd5 c4 d7 c3 b5 c2 g5 h2 b6 h4 e7 a4 Ke6 h3 g6 a3 g7 a2 Nd2 e2 Bg2 Nf6 g8Q Na6 b8N Ne8 b7 Nd6 Qg6 Rg8 Bd5 Ra7 f3 Ke3 Qf6 Kf2 Nf1 Ra8 Rb1 a1R Bf4 c1N Qc2 Nd3 Qcb2 Kg2 Rc1 Ndc5+ Ke5 Ra3 Bg3 Ne6 Rc6 Nac7 f4+ Rf3 Nd2 Ra1 Nf1 Qe8 d8Q Na8 Qdb6 Qd7 Na6 Qd8 b8Q Nb7 Q8c7 Bd7 Nb8 Be8 Qd6 Bg6 Qdc7 Be4 Qd6 Rb3 Nf3 Re3 Nd4 Qc7 Qg5 Qd7 Kf6 Qc7 Qde5 Qd6 Kf7 Nbd8+ Ke8 Nb7 Bb3 Bd3 Qgf6 Qb4 Kd7 Qd6+ Kc8 Ra2 Nd2 Ra1 Rhc1 h1N Nf1 Nf2 Bd5+ Kg1 Rd1 Be4 Nh2+ Kg2 Rh1 Nd1 Nf1 Rc1 Qa7 Ra1 Rh2+ Kg1 Qab6 Bd3 Rh1#
K1N3N1/1B2q2b/2rp1b1P/2R1n3/Rq4RQ/n1Rn2Pk/1nQQ1p1B/7r b - - 0 1 legal: proof: d4 c5 f4 cxd4 a4 b5 axb5 e5 g3 g5 h3 g4 hxg4 h5 gxh5 exf4 Kd2 Ke7 Kd3 Kf6 Ke4 Kg5 Kd5 Kg4 b4 a5 c4 f5 e4+ f3 c5 a4 e5 d6 c6 a3 h6 a2 b6 f4 b5 d3 c7 d2 e6 Nd7 Kc6 Qg5 e7 Qh4 e8Q Ra4 b7 Nb6 b8Q Na8 b6 Rh7 b7 Be7 Qc2 d1N Bg2 f2 Qd8 f1N Nc3 f3 Nd5 Rh8 Ne2 Nd2 Nd4 Nb2 Nb5 Bf5 c8R Bf6 Ne7 Nc7 Na7 Nb3 Be3 Bh7 Rhc1 Nc5 Bg1 f2 Bh2 Nb5 Kb6 Ncd3 Rc5 Rb4 Nac8 Na3+ Ka7 Re4 Rc3 Re1 Ka8 Rh1 Qd2 Qg5 Qbc7 Qe5 Bf3+ Kh3 b8R Qd4 Bb7 Qb4 Rab1 a1Q Qc5 Qa2 Ra1 Qf7 Qdc7 Nb5 Ra4 Na3 Qcg5 Qe6 Rc5 Qee4 R1c3 Qh4 Nf5 Ne7 Qc6 Ng6 Nfe7 Re8 Ng8 Nge5 Qe4 Nc1 Qec2 Ncd3 Bc6 Rf8 Rb7 Re8 Rg7 Re7 Bb7 Rc7 Qgf4 Rc6 Rg4 Qg5 Qfe3 Qg7 Qg5 Qe7 Qh4+
1k6/1p2r1Nn/brbB2QR/1Nb3bR/1R1pNn1R/1P2BPK1/b2r2Q1/8 b - - 0 1 legal: proof: e4 c5 d4 f5 exf5 cxd4 h4 a5 h5 a4 h6 g6 Nc3 a3 Nb5 Ra5 Nxa3 Ra7 Nb5 Ra8 Na7 Qc7 Rh2 Qb6 Rh1 Qd8 g4 Qc7 g5 Qe5+ Be2 Qf4 Bh5 gxh5 g6 Na6 g7 Nf6 g8N Qg3 Nc6 Qg4 Na7 Qg7 hxg7 Nb8 c4 Kd8 a4 Kc7 a5 e5 a6 d5 c5 d3 c6 d4 Kf1 h4 Kg2 h5 Qe1 h3+ Kh2 e4 Qf1 h4 Ra4 d2 Qg2 d1B Ne2 e3 Nc3 e2 Be3 e1B Ne4 Be2 Rb4 Nd5 f6 Be6 f7 Nf4 Nh6 Bd2 g8Q Ba2 b3 Nd7 Q8g6 Kb8 Nf5 Nf6 Nb5 Nh7 Ng7 Bc5 Nc7 Re8 f8B Bc4 Bd6 Re7 a7+ Kc8 Rc1 Ba6 Rcc4 Bc1 Rb5 Bd2 Rcb4 Bc1 Kg1 h2+ Kf1 h1B Ke1 Rb8 a8R h3 Ra7 h2 Ra5 Bc4 R7a6 Ra8 Rab5 Kb8 Rba5 Bb6 Rh5 Bc5 Rh4 Bb5 Ra5 Ra6 f3 Rb6 Kf2 Bd2 Qh3 Bg2 Kg3 Bgf1 Qg2 h1R Na8+ Kc8 c7 Rd7 Qf7 Nd5 Bf8 Be7 Bf4 Ba4 Rc5 Ba6 Rc6 Ra1 Rch6 Rd1 Qg6 Bd6 Be7 Be3 Bg5 Rd2 Be5 Re7 Bgf4 Kd7 c8R B4b5 Rc3 Bc6 Nc7 Kc8 Rc5 Kb8 Ra5 Ndf6 Rd5 Bc5 Bd6 Nh5+ Kh2 N5f6 Rdh5 Nd5 Kh3 Rb2 Kg3 Rd2 Bfe5 Bg5 Bf4 Re5 Be3 Nf4 Bf2 Re6 Be3 Re7 Nb5+
3n2n1/1b3R2/Q1ppN2R/2r3qn/2B1B1bP/1Rb3Pk/1pQn1Q2/Q3N1K1 b - - 0 1 legal: proof: c4 a5 b4 axb4 g4 d5 cxd5 Kd7 d6 h5 gxh5 Ke6 d7 c6 Qa4 Ra5 Qd1 Qb6 d8R Ra8 d4 g5 Qd2 g4 Qd1 g3 Bf4 g2 Bd6 Ra3 d5+ Kf6 Bc5 Rh3 d6 Rg3 d7 Ke6 Bd6 exd6 fxg3 Ke7 Kd2 Qa6 Ke1 b5 Qd2 Qb7 Qd1 Qb6 e4 Ke6 a4 f5 h6 b3 e5 b4 a5 f4 a6 Kf5 h7 b2 e6 f3 a7 Kg4 a8Q b3 e7 Qb5 Kf2 Qa6 e8B Qb5 Na3 b1B Bc4 Bg7 Nc2 Na6 Ne2 g1N Bg6 Qg5 Ra3 Bb7 Nf4 Bc3 Be4 Nc5 Ne1 Ne6 Qa6 Ne2 Rf8 Nd8 Ne6 Nf4 Kg1 Kh3 Rf7 Nh5 Qc2 b2 Rb3 Ne7 Qf2 Bd3 Qc2 Be2 Qa1 Rf8 h8Q Ng8 Qd4 Bd1 Qdf2 Re8 Nc5 Re5 Ne6 Rc5 Rg7 Nf7 d8Q Be2 Qda5 Nd8 Qa6 Bd1 Rd7 Be2 Qd4 Bd1 Rf7 f2+ Kf1 Kg4 Kg2 f1N Kg1 Kh3 Qdf2 Bg4 Qf6 Nd2 Kf2 Nf4 Nc7 Qh6 Rf1 Qg5 Rh7+ Qh4 Kg1 Qh6 Ne6 Nh5 Qf4 Qg5 Rh6 Bf3 Qe3 Kg4 h4 Kh3 Qd4 Bd1 Rf7 Bg4 Qf2
2Rb1bb1/R1Q1k1Bp/N1q2qQ1/r4P2/b2B4/r1p1N2P/Nb3p1K/Q6N b - - 0 1 illegal: No possible last move, all moves rejected
8/Pb2kbBn/1K1BNr1b/1N1RNQ1q/2Br4/nnrrN3/1r2PR2/5q1Q b - - 0 1 legal: proof: f4 a5 g4 h5 gxh5 e5 b4 axb4 c4 d5 cxd5 exf4 Kf2 g5 a4 f5 h4 b5 d4 c5 a5 g4 a6 g3+ Kf3 c4 d6 c3 d5 b3 d7+ Ke7 a7 b4 h6 b2 h5 b3 h7 c2 h6 g2 Nd2 b1N Nc4 b2 Rh5 Qe8 d8N Nd7 Qd3 Rb8 Nb7 Na3 Ne3 b1B Nd6 Rb2 Nb5 Ba2 Kf2 Bc4 Nf3 g1R Ne5 f3 Bg2 f4 Qf5 Rd1 Rg5 Nc5 d6+ Kd8 d7 Nb3 Rb1 Ke7 d8N Bb7 Ne6 Nf6 Bh1 Rg8 h8Q Qh5 h7 Bh6 Bd2 c1R Bb4+ Rd6 Ra1 Rc3 Rf1 Rg7 Qa8 Bcd5 h8B Nh7 Bg2 Rg8 Bg7 Rgc8 Bh3 Rd3 Bg4 Qe8 Bh5 Rcc3 Bf7 Bc4 Ba5 R6d4 Bc7 Ba6 Bg8 Qh5 Qae4 Bb7 Bd6+ Ke8 Qh3 Bcd5 Qef5 Bc4 Qh1 Bcd5 Nc5 Bf7 Ne6 Na5 Qe4 Rdd2 N5g4 Nb3 Nf8+ Be6 Nc2 Rb4 Rc5 Rdd3 Ne5 Bd7 Bd5 Be6 Qg6+ Bf7 Ne6 Rbd4 Bc4 Re4 Kg1 f2+ Kg2 Ree3+ Rd5 f3+ Kg3 Rd2 Qg5 Rd1 Kf4 Re4+ Kf5 Rdd3 Ne3 Rg4 Rg1 f1R Rg2 f2 Rh2 Rg2 Ke4 Rg4+ Qf4 Rfg1 Rg2 f1Q Rf2 R1g2 Bb8 Rg6 Qf5 Rf6 Bd6 Bc8 Rd4 Rg4+ Kd5 Rh4 Kc6 Bb7+ Kb6 Rg4 Bb8 Ke7 Rd5 Rgd4 Bd6+
b3b2B/4bRPN/1P2pQB1/1r1qRnK1/bB2r3/3r1QB1/N1q1q1N1/1k5n b - - 0 1 legal: proof: e4 b5 c4 f5 a4 fxe4 axb5 d5 cxd5 g5 h4 gxh4 Ke2 Kd7 Ke3 Kd6 Kf4 Kc5 g4 Kb4 d4 c5 g5 a5 d6 h5 b6 e6 b7 h3 d5 e3 b3 a4 g6 a3 d7 c4 f3 c3 d6 c2 Qe2 h2 Nc3 h4 Qg2 e2 Nd1 e1R Nh3 a2 Bd2+ Ka3 b4 c1Q b5 Rh5 b6 Be7 Nc3 Kb2 Bd3 Na6 b8B Nc5 Rf1 h1B Kg4 Ba6 f4 Bb5 f5 Ra3 f6 Qc2 f7 Ne4 f8N Ba4 Rf7 Ng3 Nh7 Re4+ Nf4 h3 Re1 a1Q Qf3 h2 Na2 Qad1 Bb4 Rb5 Bc7 Qa8 d8B Kb1 d7 Qd5 Be5 Bg2 Bh8 h1B g7 Rc3 Re3 Qe2 Bc7 Ra3 d8Q Rc3 Rf6 Nh6+ Kh4 Nhf5+ Kg5 Bf1 Ng2 Rb3 Ne1 Bhg2 Bf4 Nh1 Bg3 Rc4 Re5 Re4 Qf4 Bf3 Ng2 Bh5 Qf3 Be8 Ne3 Bh3 Ng2 Bg4 Ne3 Bgh5 Ng2 Bc6 Qf8 Bhe8 Qf7 Ba8 Qg6 Bc5 Rf7 Be7+ Qf6 Rc4 Be4 Rd3 Bc5 Nd6 Bg6 Nf5 Bd6 Re4 Bb4
q2N1NrB/1qPbbQN1/B2R4/3k2p1/1p4R1/1KnPbq2/Q1Nb3n/r6R b - - 0 1 illegal: No proof kernel
1KQ1n1r1/Pb1B2pn/rB2q3/qBQr4/5NPq/2R1k1b1/2Q1pN2/1q1R2B1 b - - 0 1 illegal: No possible last move
NnQ3QK/5b1B/4QQ2/Np2n2P/3BPq1N/bpprk1rR/1br2n2/R7 b - - 0 1 illegal: No possible last move, all moves rejected
bBBrn1N1/1BpPR3/Q4Nqn/5k1r/2Pnpr2/K1Q4b/1B2RRbp/8 b - - 0 1 legal: proof: e4 g5 a4 d5 g4 dxe4 h4 b5 axb5 Nf6 f4 gxf4 g5 Bh6 g6 Bg5 hxg5 Ng8 c4 Kd7 b4 Ke6 d4 h5 Kd2 a5 Kc2 f5 Kb2 e3 g7 a4 d5+ Ke5 b6 e2 d6 e1N b7 h4 b5 f3 b6 e6 g6 h3 Ka3 f2 Rh2 f4 Nc3 f3 Qc2 Qg5 Bb2 Rh5 Ne4+ Kf4 Qc3 e5 Bg2 f1B Nf6 f2 Ra2 Nh6 g8R Nf3 g7 Nd4 Nf3 Nd7 b8Q Kf5 b7 Qg6 Qa7 e4 b8B Ba6 Ng5 Bb7 Ngh7 Bd5 Bf3 Bg2 Re8 f1B Ng8 Nf6 Re7 Ne8 Nhf6 Bc6 Qa6 Bd5 Ba7 Rd8 Bb8 Ba8 Be2 Bf3 Rg2 h2 Rf2 Bh3 Bf1 Kg5 Be2 Bfg2 Bf3 Kf4 Bg4+ Kg5 Re2 Kf4 Bc8 Kg5 d7 Kf5 Kb4 a3 Ra1 a2 Rf1+ Nf3 Rff2 a1R Kb3 Rd1 Ka3 Rf1 Ng4 Qg5 N4f6 Rd1 Rf1 Rd3 Rff2 Qg6 Qb3 Kg5 Qc3 Nd4 Rf1 Rf3 Rff2 Nhf5 Nh6 Rf4 g8B Bd5 Bf7 Ba8 Nhg8 Nh6 Bd5 Kf5 Bdb7
Bb3b2/1QP1B1r1/pP2nq1R/4R2q/Q1r1b1n1/1Rk1pN2/5n1p/N2Q1K1R b - - 0 1 legal: proof: e4 b5 d4 f5 a4 fxe4 axb5 c5 h4 g5 hxg5 cxd4 b4 Kf7 f4 Ke6 g4 Kd5 f5 e5 g6 h5 b6 e3 g5 e2 b5 Kc4 g7 d5 b7 a6 g6 e4 b6 h4 f6 d3 f7 d4 Bg5 h3 Bg2 h2 Nf3 Rh4 Nbd2+ Kc3 Be7 Nd7 b8Q Ra7 Nb3 Nh6 g8R Bb7 g7 Nc5 Rh8 Ne6 g8R Ng4 Rh6 Ba8 Rb1 Rc7 Bd6 Qf6 Rg5 Rc4 Na1 Rh5 Rg7 Rg5 Be7 Bd5 Rgh7 Rg7 Qb7 Rb4 Qd2+ Kc4 Rh5 Ne5 c3 Ng5 Qa7 Bb7 Kf2 e1B+ Kf1 e3 R7h6 Bg3 Qa8 Bf4 Ng1 Bf3 Qf2 d2 Qh4 d1Q+ Qe1 d3 Qa7 d2 Qb8 Kd3 c4 Bg3 c5 Kc3 c6 Bf4 Qc8 Bd5 Qc7 Qg4 Qe2 d1N Be4 Nf2 Nf3 Qgf5 Qd1 Neg4 Qa7 Bb8 c7 Q5e5 Qa8 Rd4 Qc6+ Rc4 Qca4 Ne6 Rb5 Nf4 Rb4 Qef5 Rb1 Q5g6 Re5 Qh5 Rb2 Be6 Bb7 Bd5 Ba8 Be4 Rb4 Rg5 Rbb5 Bg7 f8Q Ne6 Qc8 Bf8 Qb7 Rg7 Rb3#
7r/4r3/1rRnqp1B/p1BPN1Nk/1p3Qb1/p2Q1n1R/1P1bB3/K1R2rB1 b - - 0 1 illegal: No proof kernel
5n1q/2B4n/1qp1q1Nk/1q1BP2R/2P1r2n/2p5/pQ1B1qBR/1BBK3N b - - 0 1 illegal: No proof kernel
5r1R/qp1n2Nr/P2bpp2/2rQRn1b/k3R1RP/2R1R2K/2p1n3/5NBB b - - 0 1 illegal: No possible last move, all moves rejected
1k2K3/1R1R3q/1Pb1NBN1/r3P1Nr/nrQ1rnBp/1q2N3/6b1/2B1B2n b - - 0 1 legal: proof: c4 d5 cxd5 b5 g4 g5 f4 e6 f5 exf5 a4 Bh6 axb5 fxg4 h4 g3 Ra5 g4 Ra1 Bg5 hxg5 Be6 Rh6 Bf5 Rh1 Bc8 d4 Kd7 Kd2 a5 Kd3 c5 Ke4 Kc7 Ke5 f5 b4 h5 e4 c4 g6 h4 g7 a4 Bf4 c3 Rh2 c2 Be2 c1Q Na3 g2 Nc4 a3 Qb3 a2 Rb1 a1R Nf3 g1N Ne3 g3 Ng5 g2 Bg4 Nh6 g8N R1a4 Ne7 Na6 b6+ Kb8 Kf6+ Qdc7 d6 Qb2 d7 Nc5 d8N Bd7 b7 Bc6 b5 Rb4 Qc4 Nh3 Nde6 g1R Rd2 Na4 Ng6 Qb3 d5 Re1 d6 Ra5 d7 Rh7 Bg3 f4 d8B f3 Rd7 f2 e5 Rh8 Ke7 f1B Rb2 Re2 Be1 Bfg2 Rb1 Rh7+ Ke8 Nf5 Bf6 Nf4 Rb2 Ng3 Rb1 Ka7 b8B+ Kb7 Ba7 Rh5 Bd4 Nh1 Bb2 Kb8 Bc1 Bcf3 Rd4 Qh7 Rd7 Be4 b6 Bc6 Ra1 Rd2 Ra2 Rd4 Rd2 Re4 Rd1 Bd5 Rc7 Ba8 Rdd7 Bc6 Rb7+
2b5/1NRNRBqr/Q4b1b/P2nQkbq/3q4/2Rn1N2/5P2/1N2bKbN b - - 0 1 legal: proof: e4 d5 g4 b5 c4 f5 cxd5 a6 gxf5 h6 e5 a5 b4 axb4 Bb2 Ra4 Bd4 Ra5 Be3 Ra6 Bg5 Rf6 exf6 hxg5 a4 Kd7 h4 c5 d4 e5 f7 b3 h5 b4 f6 c4 a5 g4 d6 Ke6 d5+ Kf5 h6 g5 h7 c3 d7 b2 d6 b3 Nf3 c2 Ra3 c1B Bg2 g3 Nbd2 b1Q Rh5 b2 Nf1 e4 N3d2 e3 Rc3 e2 Bd5 Qa1 Nb1 Bh6 f8R g2 f7 g1B Re8 Ne7 f8N Na6 Bf7 Nd5 Re7 Bh2 Qd2 Qb6 d8N Nc5 d7 Be5 Nde6 Bf6 d8N Qd6 Rhh3 g4 Nb7 g3 Nd7 g2 Ng5 g1B Nf3 Qc7 Qd4 Bcg5 Qc4 Qh2 Rg3 Qh5 Qa6 Qa4 Rc1 Qd4 Rc2 Nb3 Rc7 Nc1 Nbd2 b1Q Rh3 Kf4 Ng3 Qbg6 Nh1 Qg7 Nb1 Kg4 Nh2+ Kf5 Rhc3 Ne3 Nf3 Nd3+ Kd2 e1B+ Ke2 Nd5 Kf1 Rg8 h8Q Rd8 Ndc5 Rd7 Qe8 Rd8 Qeb5 Rh8 Nd7 Rh7 Qc5 Bc1 Qcd6 Bcg5 Qe5+
R1Q4b/2RN3K/Nqrn2Rn/2Nr1rNb/B1bN3k/1P3bP1/5b1N/n7 b - - 0 1 legal: proof: c4 a5 f4 e5 h4 exf4 b3 g5 hxg5 d5 cxd5 a4 Bb2 b5 a3 b4 axb4 a3 b5 axb2 Kf2 Ke7 Kf3 c5 Ke4 h5 d4 f5+ Ke5 h4 e4 f3 b6 h3 b7 f2 g6 c4 g7 f4 Nc3 b1B Qc1 h2 Na4 c3 Nf3 c2 Bb5 Na6 b8N Bb7 Kf5 f1R Kg6 Rh5 e5 Nb4 e6 Nh6 g8R Bg7 Kh7 Kf6 e7 Ra6 d6 Bh8 e8N+ Kf5 Rg1 h1N d7 Ng3 d5 Ne4 Nh2 f3 d6 f2 Nf6 Rd1 Re1 f1B Re2 Qa5 d8N Rd3 d7 Nd6 Ra2 Bf3 Re7 Rd5 Ndc6 Qc7 d8N Rb6 Qa3 c1B Nf7 Nc2 Qc5 Bc4 Nd4+ Kf4 Qc6 Be3 Nc5 Bf2 Ra8 Rhg5 Nba6 Kg3 Qd7 Kh4 Qc8 Rc6 Ba4 Qb6 Rc7 Rge5 Ng5 Na1+ Nge4 Bh5 Nfd7 Rf5 Ng5 Be4 Rg6 Bef3 g3+
B1b1N1N1/7N/qb2k1nK/bb2n3/PqpR4/pNBnr1P1/N2Q4/2QN4 b - - 0 1 illegal: No proof kernel
N3n2r/b1Np1kq1/pp3q2/1NNBR1r1/n2b1R2/1PN4b/1nQ4P/RK5R b - - 0 1 illegal: No proof kernel
2BRqk2/pQb5/N1BPP1P1/2bp4/1nbB2R1/r2r4/3NN1K1/1nQq2b1 b - - 0 1 legal: proof: c4 b5 e4 f5 d4 g5 a4 d5 axb5 e5 h4 gxh4 c5 Qd6 cxd6 Bh6 Qd3 Na6 dxe5 Bg7 e6 Nb8 e5 Bf8 Qe4 fxe4 b4 h5 g4 c5 f4 c4 Kf2 e3+ Kg2 e2 e7 e1B f5 h3+ Kh2 h4 g5 c3 f6 c2 b6 Ba6 b7 Bh6 b5 Ba5 b6 Nc6 b8N Bc4 b7 Nb4 g6 Bc7 Nf3 Be3 Nbd2 Bc5 Ba3 c1B Na6 Rc8 b8Q Bb2 Rc1 Bbd4 Rg1 Rh6 Kh1 h2 Rg4 Bg1 Bb2 Rh7 Kg2 h3+ Kg3 h1Q Bd4 h2 Qb7 Rh5 Bh3 Rf5 Rb1 Rf4 Rb2 Re4 Rb1 Re3 Re1 Ra3 f7+ Kd7 f8Q Nf6 Qh6 Ke8 Qe3 Rb8 Qc3 Rc8 Qc1 Ne4+ Kf4 Nc3 Kg3 Nb1 Re2 Be3 Ng1 Qe4 Rf2 h1Q Ne2 Qd1 Rf8+ Kd7 e8B+ Kd8 Rf3 Bg1 Kg2 Rb8 Bd7 Qe3 Bc8 Ke8 Rf7 Rd3 Rd7 Kf8 Rd8+ Kg7 Qc6 Rb5 Qb7 Ra5 Bd7 Raa3 Be8 Qh6 Bc6 Qh8 Rg3 Qe8 Bc8 Kg8 e6 Kf8 Rg4
1kN3q1/QN1B1QB1/K5b1/1Rqr1Qbr/4Pn2/R3nN2/1P1n2Pp/3bnb2 b - - 0 1 legal: proof: f4 b5 h4 g5 a4 gxh4 axb5 d5 c4 e5 cxd5 exf4 e4 Kd7 Ke2 c5 Kd3 Kc7 Kc4 f5 d4 h5 Ra2 a5 Rh2 h3 Qd2 h4 Nc3 f3 Ra3 f2 Qh6 f4 Qg6 f3 Qf6 a4 Bd2 Ne7 Qe6 Bh6 Bg5 Ng6 Qa6 Nc6 b6+ Kb8 Kb5 c4 d6 Qg8 b7 Nce7 d7 Nf4 d8Q Nf5 d5 Ne3 Qe6 Ra5+ Kb6 Rc5 d6 Rd5 Ra2 a3 Nce2 c3 d7 c2 Nd4 c1N Qf5 Nb3 Qdf8 Nd2 Bb5 f1B d8N f2 Q8f7 Be2 Qg7 f1B Qgf7 Bd1 Bf6 Bg5 Bg7 Rh5 Ngf3 Be6 Rh1 h2 Bd7 h3 Ra1 a2 Nb5 Bc4 Rf1 h1Q Nd6 h2 Nc8 Qg1 Rf2 Bb5 Ka5 Bf1+ Kb6 Nb3 Rc2 Qf2 Rc5 Nd2 Rb5 Qg1 Ka6 Qf2 Rc1 a1N Rc3 Nac2 Ra3 Ne1 Qe8 Qe2 Qef7 Qc4 Nc6+ Kc7 Na5 Qc5 b8Q+ Kd8 Qfe5 Bf5 Qb7 Bg6 Qef5 Rh7 Qa7 Rh5 Nb7+ Kc7 Qb6+ Kb8 Qa7+
2NN1k1Q/2b2NbB/1b5Q/r3P3/1rb1K2n/R1PpBR2/qqBpP3/4n1r1 b - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 bxa5 e5 fxe5 c5 d4 cxd4 Kf2 b5 a4 d5 h4 f5 h5 g5 a6 f4 a7 g3+ Kf3 b4 c3 g4+ Kg2 b3 a5 b2 h6 Qb6 a6 Nc6 h7 Nb4 Ra3 Nh6 Rh3 f3+ Kh1 f2 Kg2 Nc2 Ra4 Be6 Nf3 Nf5 Nbd2 b1Q Ra3 Bg7 Ne4 Qa2 Nc5 Qbb2 Ng5 Kf8 Nb7 Bf7 Nd8 Ne1+ Kh1 Bg8 Qd2 g2+ Kh2 g1B+ Kh1 g3 Bg2 f1R Be4 Qab3 Bc2 Q3a2 Qf4 Be6 Qh4 Rf4 Ngf7 Be3 Qg5 Rh4 Qf4 g2+ Kh2 g1B+ Kh1 Rg8 h8Q Rg4 Qfh6 Nh4 Nc6 Bg5 Re3 Be7 Rg3 Bd6 Ncd8 Nf5 Re3 Rf4 Rd3 Bc7 Bd2 Be3 Kh2 Nh4 Kg3 Bg1 Rf3 d3 Rb3 Bgb6 Be3 d2 Ra3 Rf5 Kg4 d4 Kg3 Rg5+ Kf4 Bc5 Nd6 Rg6 N6f7 Rb8 Ke4 Rb4 a8N Rf6 a7 d3+ Bd4 Bc4 Be3 Ra6 Nb6 Ra5 Nc8 Bd4 a8B Bdb6 Bd5 Ke8 Be6 Bf8 Ng5 Rg6 Bg8 Bg7 Ngf7 Kf8 Q6h7 Rg3 Qh6 Rg1 Bh7#
6r1/q1kb2R1/pn2N1BB/1b2pb1P/1K1QnRqP/6Pq/1QRN1r2/1Bb5 b - - 0 1 illegal: No proof kernel
nQ2q2q/P4Pp1/B2q3Q/K1k3p1/2bP2RQ/1r2NnN1/1bBB3r/R4n1q b - - 0 1 legal: proof: e4 a5 c4 f5 g4 fxe4 b4 d5 bxa5 h6 g5 hxg5 cxd5 Be6 Qb3 Bd7 Qd1 Bc8 h4 Kd7 f4 Kd6 a4 b5 f5 c5 a6 e5 a5 b4 h5 c4 h6 c3 a7 b3 f6 e3 a6 e4 h7 c2 f7 e2 d3 b2 Kd2 e1N Kc3 e3 Kb4 e2 Nd2 Ne7 Rh4 Nd7 Rg4 Nb6 Ka5 b1Q Nc4+ Kc5 d6 Nf5 d7 Ng3 Bd2 c1Q Qa4 Rb8 a8B Qa3 a7 Nf3 Bb7 e1Q Ba6 Qee8 Be2 Nf1 Bd1 Bd6 Ne2 Be5 Bb3 Bb2 Ng3 Bb7 Bd1 Bd5 Ne3 Bc4 Bc2 Qc8 d8Q Na8 Qf6 Rb3 Qh6 Qe1 Ngf5 Qh4 Ng3 Qh5 Rd1 Qh1 Ra1 Rg8 h8Q Rf8 Q8h7 Rh8 Qe4 Qb8 Qb7 Qd6 Qb8 Qa2 Qg6 Rh2 Qh6 Qh8 Qh4 Qb1 Qae8 Qc1 Qe6 Qe1 Qeh6 Qe2 Nef5 Qe4 Ne3 Qee8 d4+
q3Nn1r/kB1QB3/2K1Rpbn/qrb1pN1P/6Q1/1RP1q1P1/pQb5/7R b - - 0 1 illegal: No proof kernel
5B2/2r3q1/1r1PpP2/1kbQ2p1/3PN1b1/RR1Q2nb/nQK1p1Rn/1BNn4 b - - 0 1 illegal: No possible last move
NRn5/bK4b1/2pR4/2b1q1Pr/R5bn/2nr4/BpPQB1pP/3N1NkQ b - - 0 1 illegal: No possible last move
1Nb1N3/b2r1nNn/4nP2/k3nP1b/1r6/1RQ2pn1/BP3BRK/1NN5 b - - 0 1 legal: proof: e4 d5 h4 b5 c4 g5 cxd5 gxh4 a4 Nd7 axb5 Nb8 f4 e5 f5 Qg5 g3 Qf4 gxf4 exf4 e5 f6 exf6 Be6 Be2 Bd7 Bf1 Bc8 Kf2 Kd7 Kg2 a5 d4 h5 b6 c5 b7 Kc7 d6+ Kb6 d5 h3+ Kh2 a4 d7 a3 d8N c4 d6 h4 d7 c3 Nf3 c2 Bc4 a2 Re1 Bc5 Re4 Ra7 Nc6 Nh6 d8N Nd7 b8N Nf7 Nbd2 Nf8 Ne1 Rd7 Re3 Nh7 Rb1 a1N Re6 Nb3 Re5 Nd4 Ne7 Ne6 Ba2 Ka5 Re3 Ba7 Rb3 Rg8 Nd5 Rg4 Kh1 h2 Qf3 Neg5 Qg3 Ne6 Kg2 h1B+ Kh2 h3 Nd3 Rh4 Nc7 Bf3 Ne8 Bh5 Ra1 Rg4 Nb1 f3 Qe1+ Rb4 Be3 c1N Qc3 Nc5 Bf2 Ne6 Nf4 Nd3 Ne2 Nde5 Nc1 Nhg5 Ng7 Nh7 Nb7+ Kb5 Nd6+ Ka5 Kg3 h2 Nde8 h1N+ Kh2 Ng3 Ne2 Rb7 Na3 Bg4 Rg1 Rd7 Nb1 Bh5 Rg2 Ka4 Nc1 Kb5 Na6 Ka5 Nb8
R2Bn3/2PNbR1b/p2pr1NB/1n1q1k2/5qR1/Pb1P1pR1/Qq2r1R1/5K2 b - - 0 1 legal: proof: f4 c5 g4 f5 b4 e5 bxc5 h6 Bh3 exf4 gxf5 h5 Bg4 hxg4 c4 Ke7 h4 Kf6 e4 b5 a3 g5 e5+ Kf7 d3 g3 e6+ Kf6 c6 d6 h5 g2 h6 f3 h7 g4 c7 g3 e7 a6 e8R b4 c5 b3 c6 b2 Re4 Qe7 Bh6 Qe6 Ne2 Be7 Ra2 Qd5 Nd2 b1B Nb3 Bc2 Nc5 Bb3 Qb1 Bd7 Rf1 g1Q c8R g2 c7 Qgd4 Rg4 g1Q Nf4 Nc6 Rag2 Qb2 Qa2 Nd4 Ng6 Qh2 Rfg1 Qf4 Kf1 Nb5 R2g3 Rb8 R1g2 Rb6 Ra8 Rb8 Rg5 Re8 R5g4 Bc8 Nf8 Ke5 f6 Kf5 f7 Nf6 Ncd7 Rg8 h8R Rg6 Rh7 Bb7 Bg5 Rh6 Ng6 Rh2 Rc2 Re2 f8B Bc6 Bfh6 Bb7 Nde5 Bc8 Rg7 Be6 Bh4 Bg8 Nd7 Bh7 Rf7 Bd8 Nge5 Re6 Ng6 Be7 Rd2 R2e4 Rdg2 Re2 Rg7 Ne8 B4g5 Bf8 Bd8 Be7 Rf7+
5qN1/2k1N3/Bb2b1R1/n1p1KP2/2RpB2P/2bR1BP1/6rn/rQ1qq2B b - - 0 1 illegal: No proof kernel
2R3B1/1NN2PR1/1q1NP3/Pr1bBbr1/4r2Q/1n1n3k/K1p1q1nb/3nR1R1 b - - 0 1 illegal: No proof kernel
N2k1N2/1bR1R1bb/n1rBP2N/3p1bqR/1P1Pn1n1/1n5r/3B2Q1/bR2K3 b - - 0 1 legal: proof: b4 e5 f4 exf4 g4 h5 gxh5 b6 c3 b5 Bh3 c6 Be6 c5 Bb3 c4 a4 cxb3 axb5 Rh6 Na3 Rh7 Nb1 Rh8 e4 a5 h4 d5 d4 f5 b6 g5 b7 a4 c4 b2 e5 a3 e6 f3 h6 f4 c5 g4 h5 g3 h7 a2 c6 g2 h6 Nf6 c7 Ra6 Qa4+ Rc6 Nh3 g1N Nd2 b1B Nc4 Bg7 Qc2 Ne2 Nb6 Ne4 Bd2 Nc1 Nf2 Na6 b8B Qg5 Rh5 Bb7 Na8 Nb3 c8R+ Ke7 Rc7+ Kd8 Ng4 f2+ Kd1 f1N Ke1 f3 Re7 Rc3 Bd6 Rc6 Qb2 Bd3 Rb1 a1B Qc2 Nh2 Qa2 Rg8 h8N Re8 Ng6 Rh8 h7 f2+ Kd1 f1B Nf8 Bh3 Nh6 Bf5 Ke1 Ng4 Rc7 Rg8 h8R Bc2 Rh7 Rh8 Rh1 Be5 Rhe7 Bg7 Ng8 Rh3 Nh6 Bh7 Qb2 Nc3 Qa2 Bcf5 Rh2 Ne4 Qb2 Rg3 Rh5 Rh3 Be3 Rg3 Qg2 Rh3 Bd2
2NK3N/3BnPn1/2r4b/3P1Q2/qB1p1kn1/1n1PbBp1/2r2RpR/3RRb2 b - - 0 1 legal: proof: e4 a5 c4 h5 b4 axb4 g4 hxg4 Bb2 f5 exf5 d5 Ba3 d4 Bc1 Qd5 cxd5 Kd7 Qc2 Kd8 Qd1 Ke8 Ke2 Kd7 Kd3 Kd6 Kc4 Ke5 Kc5 g5 h4 b5 a4 b3 d3 b2 f6 g3 h5 b4 f7 g2 a5 g4 f3 b3 a6 Bh6 f8R Nf6 a7 Nc6 Be2 Ne8 Be3 Ng7 Nd2 b1Q Qc2 b2 Nh3 Qa2 Rae1 b1N Nf4 Qa4 Ne4 Nd2 Nd6 g3 Bf2 Bg4 Nc8 e6 Rd1 Ne7 Be1 c6 Kb6 c5 Kc7 c4 Qa2 c3 Kd8 c2 Qc4 Nf1 Bb4 Ne3 Rhe1 c1N Qa2 Rb8 a8B Rb6 Bc6 Nb3 Bd7 Rc6 Qc2 Bf5 Qd2 Ng4 Qe3+ Be4 Qf2 Bg6 Qf1 Bf7 Ng6+ Kf5 Be8 e5 f4 e4 Bf3 e3 Qf2 e2 Bd7+ Kf6 f5 Kg5 f6 Rg8 Rg1 e1B Nh8 Bd2 Rge1 Be3 Qf1 Kf4 Qf2 Bg5 h6 Bh5 h7 Rc2 f7 Bh6 Re8 Ngf5 Re2 Rg6 Qf1 Rgc6 Rf2 Ng7 Ng6+ Kg5 h8R Ng8 Re6 Ne7 Rh7 Kf5 Nh8 Kf4 Re5 Bd2 Ree2 Be3 Ree1 Nh2 Be4+ Kg5 Qg1 Be2 Rf4 Bf1 Qf2 Ng4 Qf3 Ngf5 Qf2 Bg7 Rh2 Bh6 Rf3 Kf6 Rf4 Ke5 Qf3 Nf6 Qh5 Ng4 Qg6 Ng7 Rf2 Rb6 Qh7 Rbc6 Bf3 Kf4 Qf5+
k2Kn3/r1rbR3/qN3Bp1/1PB1BRr1/N1pnq2r/q5PB/2P3Q1/bn2N3 b - - 0 1 illegal: No proof kernel
1b6/RB1Qb3/1qr1n2r/k2bb1P1/5Qr1/P1Pr2Q1/n1N1QN1q/R2bBK2 b - - 0 1 legal: proof: e4 a5 d4 f5 h4 fxe4 b4 g5 hxg5 c5 dxc5 axb4 g4 e5 f4 h5 c3 b5 a3 d5 g6 Kd7 f5 Kc7 g5 d4 c6 Kb6 c7 d3 g7 h4 f6 h3 f7 b3 Kf2 h2 Qh5 b2 Qd1 e3+ Kg2 e2 Nf3 e1B Qe2 b4 Nbd2 b1R Nh4 b3 Qg4 e4 Qd1 b2 Qg4 e3 Be2 Nc6 Nf1 d2 Ba6 d1B Qe6 e2 Qe4 Be6 c8Q Be7 f8Q Rh6 Qb8+ Ka5 Bb5 Nf6 g8Q Nh7 Qd4 Nb4 Qdg7 Qb6 Nf5 Ra6 Qg8f7 Na2 Qh5 Bg3 N1e3 e1B Bd2 Bd5+ Kf1 Be5 Nc2 B1g3 Qe2 Rc6 Qff7 Nf8 Nfe3 Ne6 Ng4 Rc1 Qc7 b1R Qf4 Rb4 Be1 Rd4 Qgf7 Rd3 Nf2 Rb1 Qd7 Rb4 Qff3 Bgf4 Qg3 Bb8 Qf8 Bfe5 Qf6 Rg4 Qff4 Ra8 Ba6 Ra7 Rg1 h1Q Rb1 Qh4 Ra1 Rac7 Rh1 Qh8 Rh6 Rc8 Rg6 Qh2 Rg7 Rh8 Rg8 Ba7 Ra8 Bab8 Ra7 Rh6 Bb7+
QR1r2qQ/Pp1N1n2/p1P4n/bR4Q1/2b1BN1K/2p1Qb2/1P3kB1/1rb4n b - - 0 1 illegal: No proof kernel
bqNnn2r/B1pq4/2Qb2RR/5rP1/2PrpN2/1B2kp2/1nBQP3/1K1B2q1 b - - 0 1 illegal: No proof kernel
Br2RnR1/q2B1BpB/1b1q1nR1/p1qb4/4b2N/6P1/P1PK4/b2QrB1k b - - 1 2 illegal: No proof kernel
4b2q/2nBbNP1/QrQR1P1Q/8/1bb1p2r/1rk2N2/R1Q2P2/3r1QK1 b - - 0 1 legal: proof: b4 a5 bxa5 g5 h4 gxh4 e4 b5 c4 f5 exf5 d5 cxd5 b4 a4 Nh6 a6 Ng8 a5 Nd7 Bb2 Nb6 Bg7 Bxg7 axb6 Bf8 d4 Kf7 g4 Kf6 b7 c5 b8Q h5 d6 e5 d5 b3 d7 h3 d6 h2 a7 b2 Bg2 c4 Kf1 h4 Qb4 c3 Nd2 b1R Qb7 c2 Ra3 c1B Qa6 h3 Bc6 Rb6 Ngf3 Rh4 Nc4 Bg5 Ra2 Rab8 a8Q Ne7 Qc2 Nd5 Ba4 e4 Qc6 Nc7 Nce5 R8b7 Rg1 h1B Nf7 h2 Bb5 Qe8 d8Q+ Be7 Rg2 Qh8 Qf8 Be6 d7 Bd2 d8Q Bb4 Qdd3 Rb8 Qcb7 Bc4 Bd7 Bbd6 Qd5 Rb3 Qdc6 R8b6 Rg3 Bg2+ Ke1 h1R+ Qf1 Bh3 Rg1 Qh6 Qh8+ Qg7 Qh5 Qh8 g5+ Kg7 g6 Kf6 g7 Bg4 Qh7 Bh5 Qfe2 Bg6 Kf1 Bh5 Kg2 Bg6 Rb1 Rd1 Qf1 Bh5 Qh6+ Bg6 Be6 Bb4 Kg1 Rdd3 Re1 Rd1 Qf4 Bh5 Re3 Bg6 Rd3 Bh5 Rd6 Bg6 Nd8 Be8 Bd7+ Ne6 Rd3 Rb8 Ne1 Rb6 Qh6+ Ke5 f6 Nc7 Rd6 Rf3 Re6+ Kd4 Nf7 Rb3 Rd6+ Nd5 Qce2 Kc3 Nf3 Nc7 Qc2#
3B1qq1/2b2n2/2NNnrn1/1p1bk3/1Pr4N/K1b1q1P1/B2Q1P1N/1QRr2N1 b - - 0 1 legal: proof: b4 d5 c4 a5 cxd5 g5 e4 f5 exf5 a4 h4 gxh4 Rh3 Bg7 Rb3 axb3 a4 Bh6 Bd3 Bg7 Qh5+ Kf8 Kf1 Na6 Na3 Bf6 Nf3 Nh6 Bb2 Ra7 Rc1 Nb8 Nb1 Bd4 Re1 Be6 Bc1 Bc8 Ke2 Bb2 Rh1 Bg7 Ke1 Ng8 Bf1 Ra8 Ng1 Bh6 Qf3 Ke8 Qd1 Bf8 d4 Kd7 Kd2 Kd6 Kc3 h5 Kb2 c5 f6 e5 g3 b5 a5 h3 f7 h2 a6 e4 a7 e3 Qd3 c4 Qg6+ Be6 Qg7 e2 Ka3 e1B Bh3 b2 Bf5 c3 Be3 h4 Bh3 c2 Bd2 c1Q Nf3 Na6 Qh6 Nc7 Rg1 h1R Bg5 Rc8 a8Q Ne7 Nh2 Bc3 Nd2 Ng6 Ndf3 Qe3 Rc1 Rd1 Ng1 Qe7 Bf5 h3 Bb1 Qf6 Ba2 b1N+ Kb3 Bg7 f8N Nd2+ Ka3 Ne4 Qh7 Qf7 Bd8 Be5 Qa4 Qf6 Qc2 Ng5 Qh6 Nf7 Qb1 Qf5 Qf4 Rh6 Qg5 Ne7 Ng6 Bf4 Nh4 Rf6 Qh6 Qh7 Qg5 Ng6 Qh6 Qg8 Qg5 Kd7 d6 Bd5 Qh6 Ke6 d7 Kd6 Qg5 Ne6 Qh6 Bf3 d5 Ke5 d6 Bb7 Bb6 Bd5 d8N Rc5 d7 Rc4 Nb7 Qf8 d8N Qg8 Nf1 h2 Nd6 h1Q Nh2 Qg2 N8b7 Qge4 Na5 Qc5 Bd8 Qee3 Ne8 Qcf8 Nd6 Kd4 Ndb7 Bc7 Nd6 Qf3 Qd2+ Ke5 Ne2 Qd3 Ng1 Qe3 Nc6+
2knK2Q/rp1n3B/Nq2N1pb/1PPr2B1/q3QNN1/2R2bP1/1N5r/2q3n1 b - - 0 2 legal: proof: b4 c5 d4 cxd4 a4 f5 e4 a5 exf5 g6 h4 Nc6 b5 Nb8 h5 Qb6 h6 Qc6 Ra2 Qc4 Rb2 Qf7 Rb4 Qg7 hxg7 axb4 Ke2 Kd8 Kd3 d5 f4 h5 c4 e5 c5 h4 f6 h3 f7 h2 a5 b3 g3 b2 f5 Kd7 a6 Nh6 g8N Bg7 f8Q Ra7 f6 Nf7 Qe1 Nd8 f7 Bh6 Na3 b1R Bd2 Rd1 Nc4 Kc7 Qe8 Bg4 f8N Bf3 Nb2 Nd7 Qe4 Kc8 Nh3 Rh7 Rg1 h1Q Nf4 Qh3 Be2 Qe6 Nf6 Qb6 Ng4 Rh8 N8e6 Rh7 Kc2 d3+ Kb3 d4 Kc4 Rh8 Bc1 d2 Kd5 d3 Qg8 Qa5 Kd6 Qb6+ Ke7 Rh7+ Qg7 Rh8 Qc4 e4 Qf6 e3 Qe4 Rh7+ Ke8 Rh8+ Qf8 Rh7 Bf1 e2 Qh8 e1N Bh3 Nc2 Re1 Nd4 Re3 Ne2 Bf1 Ng1 Be2 Re1 Bd1 Re2 Bb3 d1Q Bd5 d2 Rc3 Qa4 Ba2 Ra8 a7 d1Q Be3 Qc1 Bb3 Rb8 a8N Rd2 Nac7 Ra8 Na6 Ra7 Nf8 Be2 Ng2 Bg7 Bg8 Rh2 Bh7 Bf3 Ne6 Rd5 Bg5 Bh6 Ngf4
R2q2B1/1R1R2N1/r3r3/1KR1pQ2/2rb1nn1/kN1P1Pn1/1Q2Pn1Q/3n2bb b - - 0 1 legal: proof: c4 d5 cxd5 f5 a4 b5 axb5 Na6 g4 Nb8 b3 fxg4 Ba3 h5 Bd6 h4 Bg3 hxg3 h4 Kd7 b6 Kd6 d3 Kc5 Kd2 Kb4 b7 g5 h5 e5 d6 a5 d7 c5 h6 a4 h7 g2 Rh3 a3 Nc3 a2 Ke3 g3 Nf3 g1B Qe1 c4 Na4+ c3 Rh4+ g4 Rc1 a1N Nd2 g2 Ke4 g3 Kd5+ Ka3 Kc4 c2 b4 Nc6 b8Q Nd4 b5 Nh6 b6 Ndf5 b7 Ra6 Kb5 Ng4 Nb3 Bc5 f3 Re8 h8Q Ree6 Qh5 Bcd4 Rb1 c1R Nac5 Nc2 Qf2 Nce3 Rb2 Qh8 d8R Rc4 Rd7 Nd1 Qg5 Qg8 Rhh7 Qd8 Rc2 Bh2 Rc3 g1N Bh3 g2 Rc1 Ng3 Qf5 Nh6 Bg4 Nh3 Bh5 g1N Bf7 Nf4 Bg8 Ng4 Rc3 Rg6 Ne6 Ngh3 Ng7 Bg1 Qh2 Nhf2 Rc1 Rge6 Rc2 Rca4 Rc5 Rc4 Qc7 Nb2 b8R Nbd1 Qb6 Nf6 Rdb7 Ne3 Qa5+ Kb2 Qd2+ Ka3 Qfh3 Ned1 Nf5 Re7 Ra8 Re8 Nh4 Bf5 Rhd7 Re6 Ng6 Bg4 Ne7 Bf5 Qh7 Bh3 Nf5 Bg2 Ng7 N6g4 Qf5 Bh1 Qb2+
Nnk1Q3/1Rp2N1p/NRBP1PRr/1r4b1/1Qr4P/1br5/N4b1q/5Knq b - - 0 1 legal: proof: f4 f5 a4 b5 axb5 d5 e4 g5 c4 Ba6 b3 Bc8 Bb2 Bd7 Be5 Bc8 cxd5 fxe4 f5 Qd7 Bg3 Qd8 Bf4 gxf4 d4 Kd7 h4 a5 g4 e5 d6 a4 g5 a3 d5 a2 g6 f3 b6 e3 f6 e2 g7 e4 b4 Ra3 b5 Ne7 g8R Nec6 b7 Rc3 b6 Nd4 Rg6 Bh6 Qd2 Rg8 Nh3 Bg5 Bg2 Qe8 Rg1 Qe5 Nf4 Rc4 Kf2 e1R Nc3 Re3 Rab1 a1R Kf1 f2 Na2 Nf3 Qb4 Rec3 Bh1 e3 Rg2 Nc6 b8Q Ng1 b7 Kd8 Qa8 Nb8 Qaa4 Be6 Rg3 Nc6 b8N Kc8 Na6 Nb8 Be4 Rd8 Qe8 e2+ Kg2 e1B Kf1 Bf7 Rb2 Rb1 Bg2 Ra3 Rgb3 Ra5 Be4 Rb5 Bf3 Rbc1 Bh1 R1c3 d7+ Kb7 d6+ Bd5 Qf7 Rg8 d8N+ Kc8 Qe8 Be6 Nd5 Qh2 Rh6 Rg6 Nf7+ Kb7 Nb6+ Bd5 Rh5 Rh6 Rb1 Nd7 Na8 Nb8 Qe2 Kc8 R1b2 Be6 Bc6 Bf5 Rb1 Bc2 R3b2 Bb3 Qe4 Bf4 Rg5 Bc1 Rg6 Bg5 Qe2 Bc2 Be8 Rb7 Qa3 Nf3 Bc6 Ba4 Qe5 Rbb3 Ke2 f1Q+ Kd1 Qfg1 Qe4 Bf2+ Ke2 Qgh1 Qc5 Ra3 Rb7 Ng1+ Kf1 Bd1 R1b2 Ra5 R2b6 Bb3 Qb4 Rb5 Qe8#
2K2QN1/3B2p1/1bp2b2/k1rQpbP1/QR1rnRq1/3r4/n1P1P3/2Qn1RBb b - - 0 1 illegal: No proof kernel
1kq1R1R1/1br1P1R1/bBn5/q2p2nK/PN6/5R1R/2r1Q1PN/nRq1q3 b - - 0 1 legal: proof: d4 c5 dxc5 a5 b4 axb4 e4 g5 h4 e6 hxg5 Bg7 Bd3 Bb2 e5 Bd4 Bf5 Be3 fxe3 exf5 Ke2 b5 Kf3 d5 c4 Kd7 a4 Kc7 g6 h5 c6 h4 e6 b3 e7 f4 e8R f5 e4 b2 c5 h3 g7 b4 e5 h2 e6 b3 e7 Ra7 Qd2 Nh6 g8R Nf7 Rg6 Ng5+ Kf2 f3 Kg3 f2 Qe2 f1Q Na3 b1Q Qd1 b2 Rf8 Qa6 Qf1 Qa5 Be3 Qc1 Nc2 b1N Nf3 Na3 Nb4 Nc2 Rb1 Na1 Qe2 Rh4 Rfg8 Rc4 R6g7 f4+ Kh4 Rc2 Kh5 Ba6 Rf1 h1Q+ Nh2 f3 Bd4 f2 Be3 Kc8 c7 Kb7 c8R Ka8 c6 Rd7 c7 Bb7 Rd1 Qf8 Rd4 Qhe1 Rd3 Qf5 Bb6 f1B Qe5 Qe6 Rh3 Bfa6 Rcf8 Qf5 c8R Rdc7 Rce8 Qc8 Rff7 Nc6 Qe2 Kb8 Rff3
N1R1bbr1/b1N2qN1/B1k1PPR1/KN2Rr2/Pn5r/1r5n/2B2b1q/6R1 b - - 0 1 legal: proof: c4 a5 g4 d5 cxd5 e5 b4 h5 bxa5 Ra7 gxh5 Ra6 d6 Ra8 e4 f6 d4 Qe7 d5 Qd8 Qd4 Ra6 Bf4 exd4 e5 Ra7 e6 Ra8 Be5 fxe5 Kd2 c5 f4 b5 a4 g5 h4 e4 h6 c4 d7+ Ke7 h5 Kd6 h7 g4 h6 b4 f5 b3 f6 b2 a6 g3 a7 g2 Ne2 g1Q Nf4 d3 Kc3 d2 Kb4 d1R Nh5 c3 Ba6 c2 Nc3 c1B Nb5+ Ke5+ d6 Kd5 Ng7 e3 Rh5+ Kc6 Nc7 b1R+ Ka5 e2 Re5 Qe8 d8R Qh2 d7 Bb7 Rc8 Be3 d8R e1B+ Rd2 Rb4 Rg2 Ne7 Rg6 B1f2 Rb1 Rg8 h8N Rh1 h7 Rb3 Nf7 Nd5 h8N Nf4 Nd6 Nh3 Rbg1 Qf7 Nc4 Bec5 Nb6 Bce3 Bd3 Na6 Bc2 Rb8 a8B Nb4 Nbd5 Ba7 Nb6 Qe8 Nf7 Qd7 Nd6 Qf7 Re8 Rd8 Ndb5 Rd5 Rc8 Rc5 Re4 Rf5 Re2 Kc5 Re4 Bc6 Bb7 Be8 Ba6 Kc6 Nba8 Rh8 Rc1 Rh4 Re5 Rg1 Nh5 Rgg3 Rg1 Rgg5 Rh6 Rg7 Rhg6 Rg8 Ng7
R3N2n/Npq1b1B1/2r3Br/1p1b1K2/NrBP3N/1P6/nqRk1Pr1/2rB4 b - - 0 1 legal: proof: e4 d5 h4 f5 c4 fxe4 cxd5 g5 hxg5 a6 Qe2 Be6 Qd3 Bc8 Qb5+ axb5 Ke2 Kf7 Ke3 Kg6 Kf4 c5 d4 e5+ Kg3 Kf5 a4 h5 b3 c4 a5 e3 a6 Ke4 g6 e2 a7 Kd3 g7 h4+ Kf3 c3 g4 c2 d6 e4+ Kf4 e3 d7 h3 g5 h2 g6 Rh6 Kf5 Be7 Nf3 Na6 Nc3 Nb4 Na4 Qc7 Nh4 Na2 Rg1 h1Q Rg3 Qhc6 Bg2 e1R Bf3 Rh1 Bd1 Rg1 Ba3 c1R Rh3 Nf6 g8B Nh5 g7 Nf4 Bc4+ Kd2 g8B e2 Bh7 e1R Bg6 Re6 d8N Rg2 Rc3 Qf3 Bc5 Qe2 Nc6 Bd7 Bd6 Be8 Be5 Bf7 Bh8 Rd6 Bf6 Bd5 Bg7 Rc8 a8N Re6 Bf7 Ng6 Na7 Nh8 Be8 Rc6 Bg6 Qg3 Nc7 Ra8 Ne8 Qc7 Bd3 Rc8 B3c2 Rc4 Bd3 Rb4 Bc4 Qg3 Bd3 Rc6 Bc4 Qc7 Nb6 Ke1 Nac8 Qb2 Bf1 Rc2 Bc4 Nc1 Ra8 Na2 Na7 Kd2 Na4 Rc1 Rc2+
nq3Q2/3k1b1P/1B3qN1/4nQ2/1P1pbnQN/Q1pP4/2b2KB1/1QN3r1 b - - 0 1 legal: proof: f4 e5 fxe5 b5 b4 Na6 c4 Ke7 a4 Nb8 a5 Ke8 cxb5 Bc5 Qc2 Ba6 Qd1 Bb6 axb6 Bc8 h4 g5 g4 Bb7 Rh2 Bc8 Rf2 h6 Rf4 gxf4 g5 h5 Ra3 Qf6 Rg3 Qd8 Rg4 hxg4 e4 f5 b7 a5 b6 c5 g6 d5 h5 g3 g7 f3 h6 f2+ Ke2 g2 e6 f4 h7 f3+ Ke3 c4 e5 a4 e7 a3 Qe2 a2 Nc3 a1Q Na2 Na6 b8Q Bf5 b7 Nf6 g8Q+ Kd7 Qa7 Nh5 Qg5 Nc7 Qa3 Nf4 b8Q c3 e8N Rg8 Nh3 g1N Bg2 f1B Kf2 Be4 Ng7 Qf6 Nf5 Ra5 Qf8 Na8 Nh4 Rb5 Qe1 Bc4 Qe2 Bc2 d3 d4 e6+ Kc7 e7 Kd7 Bd2 Rf5 Nc1 Bf7 Qe1 Qa2 Qg4 Qd5 Qe5 Qdd6 e8Q+ Kc7 Q8e6 Rg6 Q6d5 Kd7 Qda2 Qb8 Qb1 Rg8 Ke1 f2+ Kf1 Nfe2 Nf4 Nf3 Nfg6 Nf4 Qec5 Ne5 Be3 Nd5 Bg5 Rg7 Ke2 f1B+ Ke1 Nf4 Kf2 Be2 Qca5 Bf3 Qb5+ Qc6 Bd8 Be4 Qbc5 Qa6 Bb6 Rg8 Qh6 Rg7 Qf8 Rg8 Qhg5 Rg7 Bc7 Qf6 Bb6 Qfd6 Bh3 Kc6 Qe2 Ng2+ Nf4 Qdd8 Qgh5 Rg4 Qg5 Qf6 Qf3 Rg3 Nfg6 Nf4 Qfg4 Rg1 Bg2 Kd7 Q5xf5+
kQQq4/4Pr1N/1np1Bb2/p6b/P6r/1BPBn1rQ/p6r/N1KB1qB1 b - - 0 1 illegal: No possible last move, all moves rejected
1B3bN1/3rp2P/R1n1qpk1/1R1n2N1/2K3P1/1B1PP1b1/2bq2n1/Q2q1BN1 b - - 0 1 legal: proof: g4 b5 c4 d5 cxd5 g5 b4 a5 a3 a4 f3 Ra5 bxa5 b4 Qb3 h5 axb4 h4 f4 gxf4 Qg3 hxg3 b5 Rh6 Nc3 Rh7 Nb1 Rh8 h4 c5 d3 g2 Kd2 c4 Kc3 a3 d6 f3 h5 f2 h6 a2 h7 Bd7 b6 Ba4 a6 Nf6 b7 Qd7 a7 Nc6 a8B Bc2 b8N Qe6 Nd7 Rg8 Rh5 Nd5+ Kb2 Rh8 Nd2 c3+ Ka3 Rg8 Ndf3 Rh8 Ng5 f6 Bf4 Rg8 Ne5 Rh8 Nef7 Rg8 Rd1 a1B Nh6 Bb2+ Ka2 Bc1 Be5 Bf4 Ra1 Bg3 Bb7 Rh8 Ba6 Rg8 Bc4 Rh8 Bb3 Rg8 N1h3 g1Q Bf4 Qg2 Ng1 Rh8 Ng8 Qh1 N5h3 Kf7 d7 Kg6 d8Q Qf3 Bb8 Qf4 Ba4 Qd2 Bb3 Qd1 Ng5 Qd2 Bg2 f1N Qa5 Nfe3 Bf1 Ng2 e3 Bb1+ Ka3 c2 Ka4 c1Q Kb5 Bc2 Kc4 Qdd1 Qe1 Qcd2 Ra6 Bg7 Nh6 Rd8 Ng8 Rd7 N5h3 Q1e2 Qa1 Qed1 Re5 Bh6 Ng5 Bf8 Kb5 Ndb4 Rc5 Nd5 Kc4 Qe5 Rca5 Qe6 Rb5
1k3n2/1Pbp1rBn/6rb/N1Q4B/r1NP3K/brPb1RRB/2P1n3/4R2r b - - 0 1 legal: proof: f4 e5 Nc3 exf4 Rb1 c5 Ra1 c4 Nb1 c3 bxc3 h5 a4 b5 g4 hxg4 Ra3 b4 Ra2 Qg5 Ra1 Qb5 axb5 Rh3 Bg2 Rh4 Bf1 Rh8 Kf2 Kd8 d4 Kc7 h4 f5 e4 g5 e5 a5 e6 g3+ Kg2 b3 Kh3 f3 h5 g2 h6 f4 e7 f2 e8B b2 h7 a4 Bd3 f1N Qg4 a3 Rh2 f3 Be2 f2 Bd3 a2 Qe2 g4+ Kh4 g3 Bh6 Nf6 Qd1 Na6 b6+ Kb8 Beg6 Nc7 Bf4 Bh6 Qc1 Ra4 Bd2 Ba6 b7 Ne6 Bb5 Nf8 Na3 b1R Bh5 Rb3 Ne2 g1B Rg2 Bh2 Nc4 Rg8 h8R N6h7 Qa3 Rg6 Rb1 a1B Qc5 Bb2 Re1 Ba3 Bc6 Bb5 Nc1 Ba6 Rg1 g2 Bg5 Ng3 Bf6 f1R Bg7 Rf2 Bcf3 Ne2 Bfg4 Rf5 Bh3 Rf7 Rgf1 g1R Rg8 Bc7 Rf3 Rbb6 Nb3 Rh1 Nba5 Rb3 Nb6 Bd3 Nbc4 Rgb6 Be5 Ra6 Rgg3 Rg6 Bg7
Q4B2/1pRNqrPp/1R3p2/R1nBk3/1q2n3/4b3/1PrPNPN1/1Kbq1bq1 b - - 0 1 illegal: No proof kernel forced: bxDB
rnK3k1/P3pR2/1b2rP1B/1B2p3/Q1R2b2/Q2NP3/q2P2n1/Q1qbnN1q b - - 0 1 legal: proof: c4 a5 b4 axb4 g4 h5 gxh5 d5 cxd5 f6 Qc2 Na6 Qc3 Nb8 Qe5 fxe5 h4 Kf7 a4 g5 f4 b5 Kf2 c5 Kg3 c4 a5 g4 h6 c3 a6 c2 a7 b3 d6 b2 d7 b4 h5 b3 f5 Na6 f6 Qc7 d8Q Bf5 h7 Nc5 Qd6 Qa5 Nh3 Qb5 Ra4 Qc4 Na3 b1N Nf2 b2 Nd3 Qe6 Nc4 Nh6 Ne3 Nd7 Qa3 Qa2 Rc4 Nb8 Rg1 Rg8 h8Q Bg6 Kh4 g3 Kg5 Ng4 h6 g2 h7 Bh5+ Kf5 Bh6 Qa4 Kf8 Ke6 Na3 Rh1 b1Q Bb2 c1Q Bd4 g1B Rh3 Nc6 Kd7 Nb8+ Kc8 Nc2 Qa3 Bf4 Qg7+ Ke8 h8Q Ne1 Qg6+ Kf8 Qe4 Qba1 Qc6 Bf2 Qca4 Bg1 Qh7 Rh8 Qe4 Kg8 Bc5 Bf2 Qd4 Qa1b1 Qa1 Qb7+ Kd8 Qh1 Kc8 Bg1 Bg2 Bf2 Nf1 Ne3 Bc6 N3g2 Bb5 Bf3 Rh7 Bh5 Bb4 Bb6 Bc5 Bf3 Rf7 Rh3 Nb4 Bh5 Bg1 Rd3 Be3 Rd6 Nd3 Bf3 Nb4 Re6 Nd3 Bh2 Bh6 Bf4 e3 Bg4 Bg5 Bd1 Bh6
2qQ3k/1P6/pbNp1P2/B2bnb2/P1R4p/6R1/1QbnB1Pb/Kb3RrN b - - 0 1 illegal: No proof kernel
bR2N2Q/1pb2q1N/1np2pnn/1np4K/4R3/PB3nrP/1PPB4/1k1QB3 b - - 1 2 illegal: Other
q2b4/3n3R/b1p1n2Q/NBP1pQ1n/p1n5/P1Pn4/Bkr1P1nr/RN3KN1 b - - 2 3 illegal: No proof kernel
r5B1/r1Q3Kb/2qp1n2/BPn1p1br/qNQ2N1k/Qp1R1pPr/3P1P2/2R5 b - - 0 1 illegal: No possible last move, all moves rejected
n1nNb2q/B1bb2QB/2Rrp3/2K2PB1/2pB4/P1p2N1b/1R2PnP1/q5k1 b - - 0 1 illegal: No proof kernel forced: bxLB
1R2b1q1/1R1pp1b1/r2kQrpn/1B3r1r/3KBnP1/1b1P4/1NR1PRP1/4N1q1 b - - 1 3 illegal: No proof kernel forced: bxLB
2rQq1R1/1R1pP1bq/K1bn1Nbr/1P2Q1q1/5r1B/3PqQ2/B5P1/1k3n1R b - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 c5 b4 e5 a4 exf4 Nc3 Ne7 Nd5 Bb7 axb5 Ng8 b6 Ba6 b5 Bc8 Nb4 cxb4 e4 Ke7 Ke2 Kd6 Kd3 Ke5 Kc4 a5 g6 f5 b7 h5 g7 a4 c3 a3 Qf3 a2 Qg3 b3 Qe3 h4 Qf3 b2 Qf2 b1B Qe1 h3 Qd1 f3 Rh2 f2 Ne2 f4 Qc2 f3 Qb2 Nh6 g8Q Na6 b8Q+ Nc7 Ng1 Qe8 Qa3 Ng4 Rh1 h2 Nh3 Rh6 Nf4 Bb7 Nh5 Bc6 Nf6 Bg7 Kb4 Ne3 c4 Kd4 e5 Bg6 Qd8 Rb8 c5 Rc8 Bc4 f1Q Ka5 f2 e6 Qg1 e7 f1R Qh8 Rf4 Qb3 Nf1 Qf3 Qf2 d3 Kc3 Bd2+ Kc2 Be1 Qd4 Bh4 Qe3 Bd5 Kb2 Rc1 a1Q+ Ba2 Qb1 Rc4 Qbc1 Rc3 Ne6 Ka6 Ng5 Ra3 Ne4 Ra5 Bd5 c6 Nd6 c7 Bc6 Ra4 Qcc5 Rc4 Qg5 Rc3 Rb8 c8R Ka1 Rc7 Rc8 Rb7 Kb2 Rg1 h1Q Ra3 Qh3 Rh1 Kc2 Ra4 Rf5 Rg4 Rf4 Qg8 Kc1 Qgd5 Kb2 Qe5+ Kc2 Be6 Kb1 Rg3 Qhf5 Ba2+ Kc2 Qfd5 Bf7 Rb8 Qgg4 Nh5 Qh7 Qde4 Bh8 Rb7 Qgg8 Bc4 Kb1 Qf3 Qgg6 Bd5 Qf5 Rg7 Bg6 Nf6 Qg5 Rg8 Bg7 Ba2+
2Q1KN2/1R6/BP3p1N/2n1b1r1/NQ1qQPPn/Bq4Pp/bb4b1/2b2kr1 b - - 0 1 legal: proof: b4 e5 c4 d5 a4 g5 d4 b5 h3 g4 hxg4 Qe7 Ra2 Qd6 Rd2 Qd8 axb5 dxc4 d5 Qg5 Rd3 Qd8 Rd4 exd4 Kd2 Kd7 e4 Kd6 f4 h5 g3 a5 b6 c5 b5 f6 b7 a4 Ke2 d3+ Ke3 d2 Ba3 c3 Be2 c2 Kd3 c1Q Rh2 h4 Qf1 d1B Rh3 Ne7 Nf3 Rh5 Nd4 Qc2+ Ke3 Nd7 b8N Qb3+ Nc3 Bb7 Qe1 Ng6 Bf3 Rg5 Rh2 Ra6 Rd2 h3 e5+ Ke7 Ke4 Nh4 e6 Kd6 e7 Ba8 Bc1 a3 e8Q c4 Nf5+ Kc5 Nh6 a2 Na4+ Kb4 Rc2+ c3 Ba3+ Kc4 Qg6 Rc6 d6 a1B Re2 c2 Qf5 Nb6 Nd7 c1B Re3 Be7 Nf8 Bab2 d7 Bd6 Rd3 Bde5 Rd5 Qc7 d8Q Nd7 Qc8 Qa7 Rd6 Be2 Re6 Bf1 Re7 Bg2 Qd2 Nb6 Rb7 Nd7 Qd6 Qg1 Nc5 Kc3 Na4+ Kc2 Qe7 Kd2 Qb4+ Rc3 Qe6 Ke1 Qec4 Qb6 Kd5 Qd4+ Ke6 Nc5+ Kf7 Kf2 Q4e6 Kf1 Ke8 Rd3 Bd5 Rd1 Qf5 Re1 Qe4 Rd1 Rb8 Re1 Bb7 Rd1 Ba6 Bd5 Rb6 Qbc3 Bb7 Ba2 Rc6 Kg1 Rc7 Qb3 Ba6 Kf2 Rd7 Rg1 Rb7 Kf1 b6+
4b2N/q2PpRpQ/rQbrPq1N/1nkN2P1/1p2BBB1/p3P3/8/1qbK4 b - - 0 1 illegal: No proof kernel forced: wxDB
2B4n/1Bq2pPP/1nprN3/4QB2/1kPbR1K1/3nBnBp/B4Pn1/1r1b4 b - - 0 1 illegal: No proof kernel
qb1R1K1N/1brPr3/2Q1N1Q1/3qk2R/3nbnN1/4r1R1/2P1PP2/2Nr1r2 b - - 0 1 illegal: No possible last move
1RK5/1NQ1p1B1/pPkNPn1p/3b2b1/q1BpP3/1P5q/Pr2pRB1/1q1b4 b - - 0 1 illegal: No proof kernel
b1nNr3/Pq1pPPQ1/2r3pK/3n2p1/1pNP4/1n4B1/R1BP3b/1Qkr1Q2 b - - 0 1 illegal: No possible last move, all moves rejected
b1N5/QpnKN1p1/3ppr1P/1n6/P1q4n/1PkP2P1/R1BB1nB1/r4nbQ b - - 0 1 illegal: Other
qb1N3R/P2P4/2n4p/5b2/p1BrN1R1/r2P1P2/Pq1P1qR1/1QbK1kqn b - - 0 1 illegal: Other
3bKR1N/nqP1p3/rb1Bpp2/pnP3k1/4RP1N/PP4b1/4P1R1/nQ2q3 b - - 1 3 illegal: No possible last move, all moves rejected
4qbB1/krQ2p2/NB1Bp1Q1/1R2rR1R/1Q1q1bbN/2r1B3/n4N2/B6K b - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 g5 c4 d5 cxd5 Rh7 a4 Rh6 axb5 Rh8 e4 gxf4 d4 Nc6 e5 Kd7 d6 Ke6 d5+ Kf5 e6 Nb8 Ra3 Kg5 Ra1 Nd7 exd7 Kf6 Kf2 Ke5 Kg2 a5 h4 c5 b4 e6 b6 c4 b7 c3 b8R c2 h6 a4 h5 a3 h7 a2 b5 Qc7 d8B Bg7 h6 Ra7 d7 Kd6 b6 Kc5 b7 Kb6 d6 Bf8 Qe1 Ra3 Be7 Re3 d8Q Bd7 Nh3 Re4 Bd3 Rd4 Nf2 Ra4 Qb4+ Ka7 Be3+ Qc5 Qc7 c1Q Rh5 Nf6 Nd2 Ne4 Nf3 Ra3 Nh4 Ba4 d7 Rc3 d8B Qd4 Bd6 Bd1 Kh1 f3 Rf5 Rg8 h8B Rg5 h7 Qd2 Rb1 a1B Bhf6 Qc2 h8Q Qa4 Qh6 Qe8 Qg6 Be2 Rg1 Bb2 Rg4 Bc1 Rgf4 Bd2 Rb5 Re5 Rf5 Rc2 Rh5 Nc3 Rc8 Na2 b8N+ Ka8 Bg7 Rc6 Bc2 Rb6 Bh8 Rb7 Na6+ Ka7 Bb1 Bd3 Bc2 Bf5 Rb8 Bg4 Rd5 Re4 Rdf5 Re5 Bh6 Be7 Nd3 f2 Qc8 Qg8 Qg5 Ra5 Rd5 Qc4 Ba1 Rc7 Qf5 Ra3 Rbb5 Rb7 Ba5 Rc3 Qc7 Qe8 Qe4 Bf8 Qg2 f1R+ Qg1+ Qd4 Nf2 Rd1 Bh7 Be2 Bg8 Re1 Rdf5 Bd1 Bhf4 Re5 Qg6 Bg4 Bh6 Bf4 Bg5 Bg3 Be3 Bf4 Bb6+
2B1r1b1/2N1R3/2NN2Rb/r1B2Q2/qq3b2/Bb1BQ3/QKnn1bb1/3kBR2 b - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 b4 Kd7 f4 Kd6 g4 h5 d4 c5 Kd2 e5 Kc3 a5 f6 e4 f5 h3 b6 h2 f7 c4 b5 h4 g5 a4 f6 a3 g6 e3 g7 h3 b7 a2 b6 e2 Kb2 e1Q Qe2 Rh5 Nf3 Qh4 Na3 Qe1 Nd2 Ra7 Rg1 h1B Qe3 h2 Rg6 Qd7 Bd3 Nc6 b8Q+ Rc7 b7 Bg2 Qa8 h1B b8N Nb4 Nc6 Nc2 Qa4 Qg4 Rb1 Re7 Nb5+ Kd7 d6 Re8 Nc7 Ra5 Ne4 Qb4+ Qb3 Qa4 d5 Bb7 Kc3 a1B+ Bb2 Ba6 Qa2 Qh4 Rf1 Bb5 Kd2 c3+ Kc1 Bc4 Ba3 Bb3 Kb1 Bb2 Bc5 Bc1 Ba3 Be7 f8B Qf4 f7 Bh4 Bc5 Nf6 g8B Bf2 Be7 Qb4 f8Q Qh4 Nd2 Ne4 Nc4 Na3+ Ka1 c2 Qff4 Nd2 Qfe5 Kc8 d7+ Kb7 d6 Bd5 d8B Bhg2 Bh7 Bg8 d7 Qf4 Qf5 Qe4 Ne6 Ka6 Nd6+ Qec4 Bdb6 Qcb5 d8R Qa4 Nc4 Qbb4 Rd7 Kb5 Rc7 Nf3 Rb7 Bd2 Bed6 c1B Re7 Nc2+ Kb1 Bb2 Bg3 Be5 Bh4 Bf4 Kb2 Bh6 Bc7 Bf4 B7d6 Bh6 Qee4 Bdf4 Qe3 Bg1 Be1 Bf2 Be2 Nd2 Bg4 Nd4 Nb6 Nc2 Nc8 Kc4 Nc7 Qbb5 Ba3 Qbb4 Bc5 Ne4 Qc1 Kd3 Bh3 Ke2 Qe3+ Kd1 Nd6 Rf8 Qd5+ Nd2 Bc8 Re8 Qf5 Bge6 Bg8 Bec4 Bge6 Bcd5 Ba6 Bdc4 Bec8 Bg8 Bd3
2N2RbQ/1K1Nbp1Q/4r3/2k1r1Qn/1bN1r2B/R2B4/3Br2Q/q3bQ1B b - - 0 1 legal: proof: b4 a5 g4 h5 gxh5 d5 c4 e5 cxd5 b5 a4 Nc6 axb5 a4 f4 Na5 bxa5 exf4 Kf2 Ke7 Kf3 Kd6 Ke4 c5 d4 g5 h4 c4 b6 c3 a6 c2 h6 a3 h5 a2 h7 g4 b7 f3 b8Q+ Qc7 h6 g3 a7 f2 Bd2 c1B Na3 g2 Nc4+ Kd7 d6 Kc6 d7 Qb6 d8B Qb5 d5+ Kc5 d6 Ba3 d7 Qb6 Nf3 g1B Qh2 Qb2 Nfe5 Bg7 Bh4 Bb4 d8Q Ba5 Qg5 Rb8 a8B Bf8 e3 Qb1+ Bd3 Bb4 Qf1 Rb6 Bd5 Be7 Nd7+ Kb5 Kd4 Re6 e4 Nf6 e5 Re8 h8Q Nh5 h7 Bb7 Bg2 Be4 Qhg8 Bf5 h8Q Bh7 Kd5 Qb2 Qg8g7 Bg8 Qgh7 Qc1 Rb1 a1R Rb3 Qb2 Ra3 Re1 Bge4 Re2 Bf3 Rf6 e6 Qa1 Bfe4 Rf4 Bg2 Rfe4 Bf3 Bc3 Bg2 Kb4 Kc6 Re5 Kc7 Kb5 Kb7 Bcb4 Bf4 Be1 Bd2 Bb4 e7 Re4 Qe2 f1R Bf3 Rf2 Qf1 Rfe2 Bg2 Rd8 e8N Bgc5 Rg1 Ra8 Bh1 Be7 Rg3 Ra6 Rg4 Bc3 Ned6+ Kb4 Nc8 Rae6 Rg3 Kb5 Ra8 Ba5 Bb1 Bab4 Rga3 Bd8 Bd3 Bde7 Nf8 Kc5 Nd7+ Kd5 Na7 Kd4 Rf8 Kd5 Nc8 Kd4 Nb8 Kc5 Nd7+
2NR1R1q/NRQ1b1qB/1B1rn1nk/K7/bN4R1/r2q3n/1n1BRBn1/7Q b - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 f4 Kf7 g4 Kg7 d4 a5 Kd2 c5 Kc3 h5 b4 e5 f6+ Kh7 b6 a4 b7 c4 b5 a3 b6 a2 d6 h3 Kb4 h2 f7 h4 f5 e4 g5 c3 d5 e3 f6 e2 Nf3 e1Q Bd3+ Qe4+ Nd4 c2 Re1 h1Q Na3 h3 Bd2 c1N Nc2 h2 Re2 Nd7 b8Q Ne5 b7 Ra6 Qc7 Qf3 b8R h1N Rb7 Nc4 Nb5 Qg3 Na7 Ne7 d7 Nb3 d6 Nf2 Qh1+ Kg6 Kb5 Nh3 Nb4 Nc5 Rg1 a1N Bb1 Qc3 Rg4 Nb2 Bc2 Kh5 g6 Rh6 g7 Ra3 g8N Qe8 Bd3 Nc2 Kb6 Qe3 Bh7 Ne1 Kb5 Ng2 Kb6 Nf5 Ne7 Nfh4 Kb5 Qed3+ Kb6 Bg7 f8B Qeg6 f7 Bf6 Bg7 Bg5 Bf8 Qh8 Bg7 Qf6 f8R Rg6 Bh6 Qfg7 Be1 Re6 Bf2 Bf6 Bd2 Ng6 d8B Bg5 Qb8 Bd7 Nec8 Ba4 Ka5 Kh6 d7 Rd6 Bb6 Ne6 d8R Qf6 Bde1 Qfg7 Qc7 Be7 Bd2+
BQB1b2q/Q2Q1q1k/1bq1n2R/2q1Qr2/1NQq4/BN1p1R2/1n1Rr3/B6K b - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 h4 Kf7 f4 d5 Kf2 g5 Kg2 Kg7 b4 e5 c4 a5 f6+ Kh7 h6 a4 c5 g4 b6 g3 h5 e4 b5 a3 c6 a2 b7 e3 f7 d3 b6 e2 c7 e1Q f5 d2 f6 d4 Nc3 Qe3 Nd5 Nc6 b8Q Qf4 b7 Bg4 c8B Ra3 Qa7 Ra5 b8Q Bc5 f8Q+ Bd7 f7 Nf6 Nf3 Nb4 Ba3 Nd3 Nb4 Bb6 Qc5 Re8 f8R Nb2 Qc4 Qdc7 Bd3+ Qf5 Be4 Qc6 Rh3 Rc5 Kh1 Nd5 Qda4 d3 Nd4 Nf4 Nb3 Ne6 Rd1 a1Q Qe5 Qg6 Rf3 Qf5 Bd5 Qf7 Qeb8 Ra5 Rh2 Qc5 Ba8 Qd4 Rh4 Rf5 Rh3 Re7 Qe5 Be8 Q4d7 Nf8 Qeb8 Re2 Rh4 Ne6 Rh3 Kg8 h7+ Kg7 h8B+ Kh7 h6 Qc1 Rdf1 d1Q Rh5 Qdd2 Rd1 Q2c3 Bf6 Q1c2 Rd2 g2+ Kh2 Kg6 h7 Qc5 h8Q g1Q+ Kh3 Qgd4 Rh4 Ree5 Kh2 Re2+ Kh1 Qc6 Be7 Qcc5 Qhe5 Qc6 Bf6 Qcc5 Rg4+ Kh7 Rg6 Qc6 Qcb5 Q3c5 Qc4 Qcc3 Rh6+ Kg8 Qb5 Qdd6 Qf4 Na4 Bd8 Qh8 Qbc4 Qdd5 Bf6 Qe4 Bc3 Qed4 Ba1 Nb2 Qfd6 Qhg7 Rf6 Kh7 Qe5 Qh8 Rh6+
4b1R1/1n1bB1QR/4b2K/2pQbN2/1Bn3Bn/1QBQ4/N3RQrk/q1r1n3 b - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 Ke2 Kd7 Ke3 Kd6 Kf4 c5 Kg5 Ke5 d4+ Ke4 f4 e5+ f6 a5 g4 h5 b4 h3 d6 h2 f5 h4 d7 h3 d5 a4 d6 a3 b6 a2 b7 Nh6 b5 Na6 b8B Be7 b6 Rf8 b7 Qb6 d8Q Qa7 d7 Bd6 f7 Nb4 f6 Nc6 Ba3 Nf5 Be2 Na5 Bb4 Nc4 Nf3 Nh4 Kh6 Kf4 g5 Kg3 g6 e4 g7 e3 Nd4 Be5 Nc3 Rg8 Bg4 e2 f8Q e1N f7 Qa4 Rc1 a1N Na2 Nb3 Rc2 Nba5 Re2 Qa3 Qde7 Qc3 d8B Qa1 Qe6 Bd7 Qd5 Ra7 Bbc7 Ra8 b8R Nb7 Be7 Ra3 Qd8 Rc3 f8Q Rc1 Bca5 Be6 Bc3 Bd7 Bab4 Be8 Rf1 h1B Rf7 h2 Qb3 Bf3 Q8d6 h1B Qa6 Bhg2 Nf5+ Kh2 Qg6 Be4 Qd3 Bd5 Qh7 Rh8 g8Q Be6 Qg5 Rg8 Qhg7 Kg1 Qgd2 Bgc6 Qd5 Bcd7 Q2d3 Nbd6 Qf6 Rg5 Rh7 Nb7 Q8g7 Nc2 Bh5 Rg2 Bg4 Ne1 Rc8 Kh2 Rd8 Bg6 Rg8 Bh5 Qff8 Bhe8 Qff6 Bd6 Qfd4 Be5 Qf2
1N2N1N1/B2p2n1/2q1b3/4Rr1n/1nN1QnR1/NBbN1p2/R7/3KnBBk b - - 0 1 legal: proof: b4 a5 g4 h5 gxh5 c5 d4 cxd4 a4 b5 axb5 e5 f4 a4 fxe5 Ra5 bxa5 Qf6 Bb2 Qg5 Bc1 Qd8 h4 Ke7 e4 Ke6 c4 g5 h6 f5 a6 g4 h7 g3 c5 f4 b6 a3 b7 f3 c6 a2 a7 g2 a8B d3 h5 Bd6 h6 Bc7 Qa4 d2+ Kd1 Qh4 Nh3 g1N Nf2 Qh3 Na3 Qh4 Nd3 Qg4 Rh4 Qg2 Rg4 Na6 b8N Ba5 c7 Bb7 c8N Bd5 Nd6 Nh3 Ndc4 Nf4 Bb2 Bb4 Bd4 Bc3 Ba7 Nf6 Qb4 Re8 h8B Rf8 h7 N6h5 Bg7 Qf2 h8N Rf5 Nf7 Qb6 Nh6 Qc6 Qb1 Nb4 Ng8 Kf7 Bf6 Be6 Bg5 Kg6 Bg1 Qc8 Bc6 Qa6 Ba4 Qc6 Bb3 Nh3 Qc2 N3f4 Rb1 a1N Rb2 Ng2 Qb1 Nac2 Ra2 Nce1 Ba7 Ngf4 Qc2 Ng7 Be7+ Kh5 Bec5 Nh3 Bg1 Nf4 Rg6 Kh4 Qb1 Bf7 e6 Nfh5 e7 Be6 Rg2 Kh3 e8N Qa6 e5 Qa4 Bgf2 Qc6 Rg4+ Kh2 Bg1+ Kh1 Nc1 Ng2 Qe4 Ngf4 Nd3 Nbd5 Kc2 d1N Kc1 Nb2 Kc2 Bf7 e6 Nb4+ Kc1 Qc8 e7 Qc6 Nc5 N2d3+ Kd1 Ne1 Nd3 Bb2 Nc7 Bf6 e8R Bc3 Re5 Be6 Ne8
RRK1B1R1/1RNRk1r1/5N2/b6n/Nn2nn2/1r5q/Q1Nb2pB/RB3b1b b - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 d5 c4 e5 cxd5 exf4 a4 Nf6 axb5 Ng8 Kf2 g5 Kf3 a5 Ke4 f5+ Ke5 c5 h4 a4 d4 f3 e4 g4 b4 g3 b6 a3 b7 f4 d6 a2 d7+ Ke7 h6 c4 h5 f2 d5 c3 d6+ Kf7 h7 f3 h6 c2 b5 Qb6 d8N+ Ke8 d7+ Ke7 Nc3 Qc6 b6 Ra6 Qd2 Ra8 Na4 Qg6 Ne6 Qf7 d8R Ra7 Ne2 Bd7 Nc7 Nf6 Nd4 Be8 Bd3 Na6 b8N f1B b7 f2 Nd7 Qg8 b8R Nh5 Nf6 Nb4 Rg1 Bb5 Rb7 Qb3 Ba3 c1N Nc2 Rg8 h8R Ne2 h7 Bc6 Kf5 Ra6 e5 Rg7 e6 Bh1 Rg8 g2 h8R Nef4 Rdb8 Rb6 Qe2 Kd6 e7 Qc3 Rd1 a1B e8B Qb3 Bc1 Bc3 Bb2 Bd2 Be5+ Ke7 Ra8 Ne6 Bh2 Qa3 Be4 Nef4 Qc4 Qc3 Qa2 Qh3+ Ke5 Bd3 Ra1 f1N B4g6 Nfg3 Rgd1 Bf1 Bf5 Be1 Rdd8 Bd2 Rdb8 Na6 Rh7 Rb3 Bd3 Ng6+ Kd5 Ngf4+ Kc6 Ba5 Ne3 Ne4 Bb1 Bd2 Nc2 Ba5 Rb6 Nb4+ Kb7 Rf7 Rd6 Bh6 Rb6 Rg7 Rb5 Ne6 Kc8 Bd2 R5b7 Qh4 Rh6 Nef4 Rg6 Qg3 Rg5 Qf3 Rd5 Qh3+ Rd7+
R7/r2bBNRq/2BbnRR1/N4Q2/4pR2/1NR4r/Kp2n1p1/BrB2kb1 b - - 0 1 illegal: No possible last move, all moves rejected
3b1NKB/bBp1p3/1k3QQ1/1r5n/n1RR1n2/1B1N1QBp/Q3b1B1/2q2rB1 b - - 0 1 illegal: Other
b1b1B1n1/B1N3k1/Nr1b2q1/1N1N1PR1/6p1/2n1BQrp/1n1RQ2n/1QK2R2 b - - 0 1 illegal: No proof kernel
qk1Q4/1B3R1p/1p2r3/N2QpNb1/1nRB4/qP2n1R1/bR1Qn1p1/B3K1N1 b - - 0 1 illegal: No proof kernel
1N2Q3/r3BrrR/B3nRbp/RB1N2Bp/Pq4BN/2k2n2/3p3n/KB6 b - - 0 1 legal: proof: e4 c5 d4 f5 dxc5 a5 exf5 a4 b3 g6 bxa4 Bg7 Bc4 Bh6 Bf1 Bf8 h4 b5 a3 b4 h5 gxh5 Be3 b3 Bd2 Bh6 Bc1 Bd2+ Ke2 Bb4 axb4 Qc7 Ke1 Qd8 Kd2 Kf7 Kc3 Kf6 Kb2 Ke5 c4 d5 g4 h6 f4+ Ke4 f6 e5 b5 d4 c6 d3 f7 Kd4 f8R e4 c5 e3 b6 e2 g5 e1N f5 Ne7 b7 Be6 g6 Rh7 g7 Bg8 c7 Qd5 c8B Qe6 f6 Qh3 f7 Na6 b8N Nf3 c6 Nd5 c7 Qg3 Bg5 d2 Nc3 Qd6 Rb1 Nh4 Nf3+ Kc5 Qe1 Kb4 Qe8 Nf4 Bg4 Nd3+ Ka1 Ra7 c8B Ne1 Bb5 Nc5 Bca6 Ne6 Rf1 Qd4 Rf2 Qe4 Re2 Qd4 Re5 b2+ Ka2 Qc5 Rc1 b1R Nd5+ Ka5 Rf5 Qb4 Rc7 Rc1 Re7 Rcc7 Ka1 Rd7 Ne5 Rdc7 Ng6 Nhf3 Nh4 Nh2 Rd7 Nef3 Re5 Rh8 Rf5 Bh7 g8B Bg6 Bh7 Rcb7 Rf6 Rc7 Rg8 Rcb7 f8B Rc7 Rgg7 Rg8 Rd6 Rf7 Be7 Bb1 Bhd3 Bc2 Rh7 Rgg7 Bf1 Bf5 Bfd3 Bg6 Bb1 Qd4+ Nc3 Kb4 Rd5+ Kb3 Rc5 Qc4 Nd5 Qb4 Be2 Qb6 Ra5 Qb4 Nf4 Kc3 Bf1 Kb3 Bfb5 Kc3 Nd5+
1Qqr4/n3n3/Nk3BN1/prp5/3qBR1b/NP2NRr1/1Nb1QK2/2bNN3 b - - 0 1 legal: proof: e4 b5 h4 d5 c4 g5 cxd5 gxh4 a4 f5 axb5 Be6 exf5 Bc8 g4 Kd7 d4 e5 f4 c5 b3 Kc7 f6 h5 f5 a5 g5 e4 b6+ Kb7 g6 h3 d6 h2 d7 h4 d5 h3 g7 e3 f7 e2 f6 Qc7 d8Q Qe7 d6 Rh7 d7 Ra6 Ra4 Kc6 b7 Rb6 Kf2 Qd6 Bg5 Rh6 Bg2+ Qd5 Be4 Bd6 f8N Rg6 f7 Na6 b8N+ Kb5 Bf6 Rg5 Nh7 Nh6 f8N Qe5 g8N Nf5 Nf3 Nb4 Nh6 Nc6 Ng4 Na7 Ng6 Ne7 Ne3 Rg3 Rf1 h1Q Nhg5 h2 Na6 Qd4 Ne1 Bf4 Nh3 Rb8 Qe8 Kb6 d8N Bf5 Ne6 Rb7 Qb8 Bh6 Bc2 Qc6 Nef4 h1R Na3 Qc8 Nfd3 Rhg1 Nb2 Bd3 Bb1 Bc2 Nh8 Rg8 Ng6 Rd8 Qd2 Rg3 Rc4 Qdd7 Rf4 Qd4 Rf3 Bd1 Be4 Bc2 Nd1 Bg5 Nhf4 Bh6 Nfd3 Bf4 N3b2 Bg5 Ng2 e1B+ Kg1 Bh4 Qe2 Bd2 Rf4 Bc1 R1f3 Qe6 Kf2 Qc8 Bf5 Kc6 Ne1 Rb5 Qe5 Kb7 Be4+ Kb6 Qb8+
nKbN1bNk/p7/PB5r/4B3/N1B1pb2/2R1NrN1/Q1Rb1pB1/2nr1B2 b - - 0 1 legal: proof: f4 c5 g4 h5 gxh5 d5 e4 e5 b4 Qe7 bxc5 dxe4 Qg4 e3 Qe2 e4 Qd1 Qe5 fxe5 Rh6 Be2 Rh7 Bf1 Rh8 Ke2 f5 c4 Kf7 h4 b5 d4 g5 a4 Kg7 d5 g4 h6+ Kh7 e6 b4 h5 f4 e7 g3 e8B b3 d6 g2 d7 b2 d8N Bb7 c6 Nf6 c5 Bd6 a5 Rg8 a6 Kh8 c7 Be7 c8N Nfd7 c6 Bc5 h7 Rg3 c7 Rh3 Ra2 Bd4 Qd2 Rh4 Nb6 Rh3 c8B Bc5 Bf7 Bd4 Nc4 Nb6 Nc3 b1R Rc2 Rh2 Bh3 Rb2 Na4 Kg7 h8N Kh7 h6 Nc6 Ng6 Bc8 Ne7 Rb1 Ng8 Kh8 h7 Nb4 Bb2 Bf6 Bd4 Bg7 Rc3 Rc1 Qa2 Rd1 Bd5 Nd3 Bde6 Nd5 Bb6 Nc7 Bf7 Bf8 Rc2 Kg7 h8B+ Kh7 Ba1 Rb8 Be5 Na8 Ncb2 Rb7 Bc4 Rf7 Rc3 Rb1 Nd1 Nc1+ Ke1 f3 Ne2 g1B Bhg2 Rf5 Ng3 e2 Kd2 f2 Ke3 e1B Kd4 Rh6 Kd5 Rf3 Ne3 Bd2 Rh3 Bh2 Rc2 Rh4 Kc6 Rh5 Bf4 Kh8 Bfc7 Rh6+ Bd6 Bg4 Kb7 Bc8+ Kb8 Nb3 Rh5 Rd1 Rb5 Nc1 Rb3 Bg4 Rbc3 Bc8 Ngf5 Be5 Ng3 Bf4 Be5+
1R2r3/2p1n1B1/1nRk1NQN/2r1Nn2/5rN1/1R1b3b/bK1n2PR/1BBN4 b - - 0 1 illegal: No possible last move
1b2B1Nn/5N1k/3n1BQr/Qr3RRb/1q2P1br/2B1B3/1npb3B/1NB2K2 b - - 0 1 illegal: No possible last move
1rrBR1q1/1N2n1qR/PKB1bb2/QN2qk2/5Nnn/1N2r3/1Q1R2R1/R3n3 b - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 d5 c4 h5 cxd5 Ra5 gxh5 Ra8 Ke2 Kf7 Ke3 Kf6 Kd4 b5 Kc5 e5+ d6 g5 f4 b3 d4 c6 a4 b2 h4 b4 h6 g4 h5 b3 h7 g3 h6 g2 a5 e4 a6 e3 d5 e2 Rh2 e1R Nh3 g1N Qd2 Qa5+ Bb5 Bb7 Rg2 Qd8 Qa5 Be7 Na3 Qc8 Kb6 b1Q d7 c5 d8N c4 d6 b2 d7 c3 Bc6 c2 Nb5 Nf3 Ne6 Nh4 d8N Qd7 Ned4 Qa2 Nb3 Bc8 Nb7 b1Q Ba3 c1N Bb4 Kf7 f6 Ke6 f7 Nf6 f8R Kf5 Re8 Re3 Bd6 Qe6 Bc7 Qbb2 Bd8 Qee5 Rd2 Rg8 h8Q Be6 h7 Ng4 Qg7 Bg5 h8R Nd3 Rh7 Ne1 Qh8 Qg7 Rg2 Qbe5 Rd2 Kg6 Rg2 Be7 f5+ Kf6 Nf4 Kg5 f6 Kf5 f7 Bf6 Bf3 Nc6 f8R Rc8 Rf7 Rf8 Rd7 Ne7 Bc6 Rf7 Rg8 Rf8 Rdd2 Rb8 Bc7 Rfd8 Re8 Rdc8 Bd8 Bd7 Nc1 Qag8 Nb3 Be6 Rb2 Bg5 Nd5 Qgf6 Ra3 Qd6 Nf4 Qfg6 Qd4 Q6g7 Rbd2 Qde5 Ra1 Bf6 Qb2
4b3/3b3k/1Rq1N1NR/2Bb1pQ1/2n1BR2/2N1r1NR/n1r4P/r1bNnQK1 b - - 0 1 illegal: No possible last move, all moves rejected
nBNbNnK1/2r4r/B2Q4/n1q1RqQ1/1BNN4/1BR1P1k1/2b4p/1r4Bn b - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 d5 c4 e5 cxd5 exf4 a4 Be7 axb5 Bf8 Kf2 Kd7 Kf3 Kd6 Ke4 c5 b4 h5 g4 a5 d4 f6 e3 h4 g6 c4 b6 h3 g5 f3 g7 a4 g6 a3 b7 f2 b5 a2 b6 c3 Bd2 c2 Ne2 c1N Na3 Nb3 Rc1 a1R Nc4+ Ke7 d6+ Ke6 d7 R8a7 Rc3 Na6 b8B Ne7 g8N Rh5 g7 Qc7 d8Q Ng6 b7 Rh7 Ne7 Qc5 Bh2 Nc7 b8B Rb1 Bg1 Na8 Rh2 Bd7 Nc8 Ba4 g8B+ Raf7 Rg2 h2 Rg5 Be7 Qa5 Bd8 d5+ Kd7 Kf5 Nf8 Nd4 Rfg7 Qb6 Na5 Qg4 Bc2+ Bd3 f1N Qd6+ Ke8 Rh5 Rc7 Qg5 Ng3+ Kf4 f5 Ke5 Rhe7+ Kf6 f4 Be6 f3 Bg8 Ne6 Kg6 f2 Kh6 Ng7 Kh7 f1Q Be6 Qf2 Kg8 Qf5 N4b6 Qc4 Qe5 Nh1 d6 Qf3 Rb3 Qfc6 Qgf4 Q6d5 Bb4 Qcc5 Rc3 Qf3 Ba2 Ne6 Ba6 Nf8 Nc4 Kd7 Bb3 Rh7 Rf5 Qh3 Qg5 Be7 Qd5 Qf1 Re5 Bf6 Ne6 Qf3 Ng7 Qh3 Qd3 Kc6 Ne8 Qf5 Re4 Be7 d7 Bf6 Qd4 Be7 Qdf6+ Kd5 Qfh6 Bf6 d8N Be7 Re6 Bf6 Nc6 Bd8 N6e5 Ke4 Nc6+ Kf3 Re5 Qd4 Qd6 Qc5 Qgh6 Kg4 Nd4 Kg3 Qg5+
5N1n/k2N2p1/3nK2B/R1p2N2/1QB1RQ2/1NN1qq2/Pn2bB1B/r1r1b2q b - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 d5 c4 h5 cxd5 Ra5 gxh5 Ra8 Ke2 Kd7 Kf3 e5 Ke4 b5 f4 c6 d4 Kc7 h4 Kb6 f6 b3 f5 b2 d6 b4 f7 b3 f6 Qe7 d5 Bd7 h6 Qe8 h5 Ra4+ Qd4+ Kb7 h7 Qe6 h6 Ra8 Bc4 Ra3 Ne2 Ka8 Nd2 b1N Nc3 b2 Nb3 Na6 Rh5 Ne7 Qb6 Qh3 Qb4 Be6 d7 Nc7 d8B Ng6 d6 Ka7 d7 Ne8 Bc7 Bg4 d8B Be2 Be7 Qg2+ Kf5 e4 Ke6 e3 Bh2 Qf3 Rb5 Ra6 Ra5 Nd2 Bed6 b1Q Bdg3 Nd6 Bf2 Be7 f8N c5 f7 Bh4 Nd7 Rb8 f8Q Nh8 Qf4 Rd8 Ba3 Qbh1 Re1 Bg3 Bc1 Rb8 Bd5 N2c4 Bd2 Nb2 Bc4 Rf8 Bc1 Rf5 Bd2 Rd5 Bc1 Rd1 Bd2 Ng6 h8N Rc1 Nf7 Nh8 h7 Ra1 Nh6 Bh4 Rb5 Rb6 Nf5 Rb8 Bc1 Rb6 Rd1 Rb8 Rd4 Rf8 Re4 Rf6+ Ke5 Rg6 Kd5 Rg1 Bd2 Rgc1 Ke6 Nhf7 h8N Bg3 Bfg1 Be1 Ng6 Nh8 Bf2 Bd3 Qg4 e2 Bh6 Bd2 Nfe7 e1Q Nf5 Qee3 Ngf8 Be2 Qf4 Be1 Ra5#
2K1n2B/1r1B1n1N/r3PN2/q5Np/B5bQ/1R1Qqr2/1b1bB3/Q1R1Nn1k b - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 d5 c4 e5 cxd5 exf4 a4 Be7 axb5 Bf8 Kf2 Ke7 Kf3 Kd6 Ke4 c5 d4 h5 g4 a5 b4 c4 b6 c3 b5 c2 g6 f3 g5 a4 b7 f2 b6 f6 g7 a3 g6 a2 Nc3 Bd7 Bb2 c1R Rb1 a1B Nf3 Qc8 Ne1 Na6 b8N Bb5 b7 Qd8 Kf5 Bd3+ e4 Qe7 Nd7 Qe8 b8N Bb5 e5+ Ke7 Ne4 Rc8 Be2 f1N Ng5 Nc7 Qa4 Rh7 d6+ Kd8 d5 Ra6 Bc3 Bb2 Qa1 Qe7 Rc1 Ne8 Rh3 Rc7 Bd4 Rb7 Rb3 Bc6 Bc3 Kc8 Bd4 Qd8 Ke6 f5 Bc3 f4 Nf6 f3 Nbd7 Nh6 g8B f2 g7 Qa5 Bf7 Ba4 g8B Rh8 Bg6 Nf7 Nfh7 Bh6 Ndf6 Bd7+ Ke7 Bg4+ d7+ Kc7 d6+ Kc6 Bc2 Kc5 Bf5 Kc6 Ke6 Kc5 d8Q Kc6 d7 Kc5+ Ke7 Kc6 Nh3 Bd2 N3g5 Kc5 Bb4+ Kd4 Bc3+ Ke3 Bc2 Nfd6 Be6 Rf8 Bef5 Kf4 Ke6 Kg3 Qe7 Kh2 d8Q Nc7+ Kd7 Nf7 Kc8 Ne8 Bd7 Kh1 e6 Ng3 Bed1 f1Q Be2 Qf2 Qd6 Qa7 Qd3 Qe3 Qe7 Nf1 Qb4 Bh3 Qh4 Nc7+ Ne8 Nd8 Bh8 Rf3 Rc3 Nf7 Nef6 Ne8 Bca4 Ng7 Qf2 Bg4 Rb3 Ne8 Qh4+
1R2Rb1Q/2K2k2/2bn1BQ1/N2r4/2b4r/1nQn1RN1/1rPRpQ1B/1qb2B2 b - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 Kd2 e5 Kd3 d5 h4 g5 f4 a5 b4 g4 h6 a4 b6 a3 h7 a2 f6 g3 h5 g2 h6 Ra5 f7+ Ke7 b5 Qd6 f5 Qd7 b7 Nc6 b8B Qb7 b6 Nf6 Qh5 Be6 Ne2 g1B Bg5 Rb5 Rh3 Be3 Nd2 Rb2 Nb3 Bc1 Qg6 Bd7 Rb1 a1N Na5 Nb3 Rf3 Be8 Ng3 e4+ Ke2 e3 Kd3 Bd7 Bc7 Qb8 b7 Be8 Be5 Bd7 Bgf4 Ne8 f6+ Ke6 Ra1 Nd6 Ra3 Be8 Rf2 Bd7 Rd2 Be8 Ne4 Bd7 Bh2 Be8 Ng3 Nb4+ Ke2 d3+ Kf3 d4 Kf4 Na1 Rc3 Nb3 Rc8 Bc6 Rd8 Rg8 h8Q Rg7 h7 Rg8 Rf2 d2 Rf3 d1B Qhg7 d3 h8Q d2 Bc3 Qa8 b8R Be2 Bd4 d1R Be5 Be7 f8R Bc4 Rfe8 Qb7 Bc3 Rd2 Bd4 e2 f7+ Kd5 Bf6 Ke6 f8Q Qb5 Qhh5 Rh8 Qc5 Rh7 Qfh8 Qb7 Qf2 Rh3 Qd3 Rh4+ Qg4+ Kf7 Ke5 Bf8 Qc3 Nf5 Rd4 Nd6 Qe4 Rd1 Rd2 Qa8 Nb7 Qa2 Na5 Qb1 Rd5 Nc8 Qf5 Ne7 Kd6 Nc8+ Kc7 Nd6 Rd4 Rd3 Rdf4 Rd5 Rd4 Na1 Qg5 Nb3 Rd2 Nd3 Qg6+
1N4rk/b1nn2R1/1N3R2/n1N5/rpBQ2p1/1bPKR1pQ/5p1q/1BR1BB2 b - - 0 1 legal: proof: f4 a5 g4 h5 b4 hxg4 bxa5 c5 d4 e5 dxc5 Rh6 fxe5 Rh8 Kd2 f5 a4 Kf7 e4 d5 h4 g5 e6+ Kg7 h5 b5 e5 f4 a6 b4 c6 f3 a5 f2 c7 g3 h6+ Kh7 c3 g4 a7 d4 e7 d3 e8R Ba6 c8B Nf6 e6 Kg8 e7 Bc4 h7+ Kg7 a6 Bb3 Bf5 Nfd7 Ne2 Bc4 Rh6 Nc6 Rf6 Bb5 Nd4 Rc8 a8N Ndb8 a7 Qd7 Nb6 Qb7 a8Q Nd8 Nc6 Rg8 h8R Nd7 Nb8 Qc7 Qg2 Nb7 Be6 Qc5 Bc4 Qh5 Rhh6 Rc7 Rhg6+ Kh8 Rg7 Na5 Ke3 Qh7 Nd2 Qh2 Ne4 d2 Kd3 Ra7 Nc5 Bc6 Rd8 Bd5 e8B Bd6 Bg6 Bf4 Bf5 Be3 Re8 Bd4 Re3 Bf7 Qc2 d1N Bd2 Be6 Be1 Bd5 Ba6 Bb3 Bc4 Ra6 Qd2 Ra8 Re5 Ne3 Rc1 Nd5 Re3 Ra7 Ke2 Nc7 Bb1 Be5 Qd4 Bd6 Nca4 Bc5 Kd3 Ra6 Na8 Ba7 N8b6 Nb7 Nc5 Ra4 Bd5 Na5 Bf7 Nf8 Bc4 Nd7 Qh3+
1N3b1b/1k2r1pR/qR1bnN2/Bn1R2Pn/5q1N/1K5R/RQ2b1B1/N1qR4 b - - 0 1 illegal: Other
6Rn/1k1n2pK/1q4N1/2Bb3p/2qR1Qb1/1NqRn3/1R3NRP/2bQQ2R b - - 0 1 legal: proof: c4 d5 cxd5 b5 a4 e6 axb5 Qd7 d6 Qd8 d7+ Ke7 f4 Qe8 d4 Qd8 e4 Nf6 d5 Kd6 Bc4 Ng8 Bb3 Ke7 d6+ Kf6 Bd5 exd5 Bd2 Ke6 Be3 Qf6 Bc1 Qd8 Kf2 a5 Kf1 Kf6 Ra3 Ra6 Ra1 Rc6 e5+ Kf5 e6 Rc2 Nd2 Kf6 Nb1 Re2 g3 h5 Qc2 Re5 Qd1 Kf5 Kf2 Ke4 Kf1 f5 fxe5 f4 g4 Rh6 Nh3 Rf6 Ke1 Rf7 Ng1 Rf5 Qa4+ Kd3 Qd1+ Kc4 gxf5 Kc5 Ke2 Kb6 Kd3 c5 b4 d4 Ke4 c4 f6 f3 Kf5 f2 Kg6 f1Q e7 a4 e8Q a3 e6 a2 f7 d3 e7 d2 Nh3 c3 Ba3 c2 Kh7 c1N Nf2 Kb7 b6 Qh3 b5 Qg3 Bc5 Qc7 d8R Qh4 d7 Nd3 Rg1 Nb2 Rg3 Na6 Rg2 Kb8 b7 Qc4 Nc3 Qd6 Ne2 Qb6 Nc1 Nh6 Nb3 Kc7 b8R Bb7 Rc1 a1Q Rb1 Bd5 Rc1 Qba5 b6+ Kc6 b7 Qb6 Rb1 Qaa5 Rc1 Qac3 Ra1 Qcb5 Rb1 Nc4 Rb2 Ne3 Rbc8+ Qc7 b8Q Qbc4 Qb4 Nb8 Qa4+ Qb5 Qb4 Kb7 Qf4 Qcb6 Rc6 Qe2 Rd6 Bc4 Rd3 Bd5 Rc8 Qg4 d8R Nd7 Ra8 Qge6 Ra4 Qec6 Rad4 Qa4 Ra8 Qab5 Ra1 Qbc4 Qe1 d1B Qd8 Bg4 e8R Bd6 f8N Nf7 Ng6 Nh8 Rg8 Be5 Qe2 Bf6 Rh1 Bg5 Qe1 Nd1 Qf3 Bc1 Qg5 Ne3 Qfd1 Kc7 Qe5+ Kb7 Qf4
Q7/1BKB4/bR1r3Q/R3qbbQ/1B2b3/BnP2qN1/3k2Rb/bB1r1R2 b - - 0 1 legal: proof: e4 b5 d4 f5 exf5 g5 a4 c5 axb5 Bg7 dxc5 Qb6 f4 Bh6 f6 Qd8 f5 Bf8 g4 Nc6 h4 Kf7 h5 Na5 Nc3 Nc6 Nce2 Ke8 Nf4 gxf4 g5 Ne5 Kf2 Ng6 hxg6 Nh6 Ke1 Ng8 Ke2 h5 Kd3 a5 Ke4 d5+ Ke5 Kd7 b4 a4 b6 Kc6 c3 d4 b7 d3 b8B Kb5 g7 Kc4 b5 f3 b6 f2 b7 a3 g6 h4 f7 a2 c6 h3 c7 h2 f6 Qe8 Bf4 Rh6 Qh5 Bf5 Ba7 Rd8 Bg2 f1B c8B d2 b8R Kd3 Bc5 d1Q Bb4 Qf3 Bd7 e6 Rb6 Be7 Bg3 Kd2 f8Q Ba6 f7 Bg5 Kd6 e5 Ne2 e4 Rhf1 h1B Kc7 e3 Bgd6 Qe5 Ng3 Nf6 g8B e2 g7 e1B Bh7 Ne4 g8R Nc5 Qg7 Nb3 f8Q Re6 Qgh6 Bf2 Rg7 Bg1 Qg8 Bh2 Bg6 Qd1 Bb7 Bhe4 Bh7 Qf3 Ba3 Qf6 Bdb4 Rd6 Qd5+ Bad3 Qa5 Qe5 Qa8 Ba6 Rad1+ Ke3 Rd5 a1B Ra5 Kd2 Bg8 Nc1 Ba2 Nb3 Bb1 Rg6+ Bd6 Be3 Ne2 Rg8 Rc1 Rg1 Rg2 Rg6 Re1 Bg5 Ng3+ Qf2 Re3 Rd1 Re1 Rf6 Rf1 Qe2 Kc8 Qf2 Bdb4 Rd6 Kc7 Qe2 Rgg1 Qf3 Rg2+
1K1R2k1/2r4n/3n4/1Qpp2NQ/1RR1nQQ1/3nB1NR/2P3N1/rnq1R1r1 b - - 0 1 legal: proof: e4 e5 d4 Ke7 dxe5 b5 f4 b4 e6 b3 e5 g6 axb3 Ba6 b4 Bg7 b5 Bc8 Nc3 Bh6 Nb1 Kf8 e7+ Kg7 e6 Kf6 Ra3 Bg7 Ra1 Bf8 g4 Kg7 Qf3 f5 Bc4 Bb7 Qd1 Kh6 Be2 Bg7 Bc4 Be5 fxe5+ f4 Bf1 Kg7 Be2 h5 Bf3 Be4 Be2 Bf5 gxf5 Rh7 Bf3 Rh8 Bg4 hxg4 Ke2 d5 Kd3 a5 Kd4 g5 Kc5 a4 e8Q c6 b4 a3 h4 f3 h5 a2 e7 f2 f6+ Kh7 e6 f1N b6 g3 f7 g2 f8R g4 b5 g3 h6 Nf6 b7 Ra3 b6 Ra4 Rf7+ Kg6 h7 Rf8 h8N+ Kf5 Nf3 g1R Ne1 g2 Nc3 Rd4 Ne4 Ne3 Rh3 Nd7+ Kd6 c5 b8R Ra4 b7 Ne5+ Qd7 Ra8 e8R Nd3 Ng3+ Kg5 e7 Nh7 Rf4 Rf7 Rc4 Kf6 Qh5 Kg7 Kc6 Qa5 Red8 Qd2 Kc7 Nf5 e8Q Nd6 Qg4+ Qg5 Be3 Ra5 Rd1 a1N Qh5 Re7 Nf7 Nb3 Rb1 Qh6 Ng5 Nd2 Qg4 Ra8 Qeh5 N2e4 Rbb4 Ra7 Re8 Ra3 Rbd8 Ra1 Kb8 Rf7 Re5 Re7 Qc6 Rc7 Rd7+ Kg8 Ree7 Rf1 Re6 g1N Ng2 Nf3 Qb5 Nfd2 Bg1 Qf6 Rf7 Qf4 Bf2 Nef6 Re1 Nfe4 Re7 Qe5 Be3 Qb2 Rf7 Rg1 Re7 Rb1 Ka8 Qc1 Rf7 Re7 b8Q+ Nc8 Qc7 Ra1+ Kb8 Nb1 Qcf4 Rc7 Rd7 Ncd6 Rd8+
RB1r1r2/4K2B/2pQ1p2/5PN1/1N3kbB/q4bN1/q3BB1r/N2nq1BQ b - - 0 1 illegal: No possible last move, all moves rejected
2b1b1K1/Q4BbP/n1pQ2NP/7N/rrkr1N2/nR2R3/B2Bb3/3qRQ1b b - - 0 1 legal: proof: f4 a5 g4 d5 c4 h5 cxd5 e5 fxe5 Bd7 gxh5 Bc8 b4 axb4 Kf2 Kd7 Kg3 b5 Kf4 g5+ Kf5 f6 Kg6 f5 Kf7 g4 d4 f4 e4 b3 a4 g3 h4 c6 a5 f3 a6 f2 a7 b2 e6+ Kd6 e5+ Kc7 h6 Kb6 d6 b4 h7 g2 h5 b3 h6 Qg5 e7 Qe3 e8R Bd7 e6 Qe5 d5 Kc5 e7 Bf5 d7 Qe4 d8N Qa4 d6 Nf6 d7 Nd5 Na3 b1B Bd2 b2 Nh3 g1R Nc4 Rg4 Ra3 Bbe4 Rb3 b1B Nf4 Nb4 Nh5 N8a6 Ne5 Nc2 Ng6 Na3 Bc4 Bg7 Re1 f1B Ree3 Be2 Qf1 Rb8 a8Q Bh1 Qa7+ Rb6 Bd5 Rd4 Be6 Qc4 Bd5 Qc1 Bc4 Qd1 Ne6+ Kd6 Bd5 Rbb4 Nef4 Bbd3 d8Q+ Bd7 Rc3 Bf5 Ba2 Bh3 Rb3 Ra4 Qb7 Kc5 Qa7+ Kc4 Qdc7 Bhf5 Qd6 Rb4 Rb8 Rc8 e8B Bg4 Rb6 Ra8 Kg8 Bgf5 Rb8 Bfe6+ Bf7 Be8 Nd5 Bg4 Rb7 Bc8 Rbe7 Rab8 R7e4 Ra4 Re6 Rbb4 Ndf4 Bd3 Re1 Be2 Ree3+
1b2N1Q1/1b2K3/BBB1Qn1R/kp3N2/3b4/1Q1B1bP1/Pb3pr1/1Bb2R2 b - - 0 1 legal: proof: e4 a5 d4 d5 f4 c5 dxc5 e5 b4 Qc7 bxa5 dxe4 Qd6 e3 Qd3 e4 Qd1 Qe5 fxe5 Ra6 Na3 Ra7 Nb1 Ra8 g4 g5 Bb2 b5 Ke2 f5 Bc1 f4 Ke1 Ra7 Be2 Rf7 Bf1 Rf5 gxf5 Ke7 Qd4 Kf7 Qd1 Ke8 Be2 g4 Kf1 g3 Qd4 g2+ Ke1 Nc6 Qd1 Nd4 Bf1 Ne2 Bd2 Bg7 Bc1 Ng3 hxg3 Bf8 Ke2 h5 c4 h4 c6 h3 c7 h2 f6 Bh3 c8B Bf5 e6 Bh7 e7 Nh6 c5 Nf7 c6 Nh6 c7 Rg8 a6 Bf5 a7 Ng4 a8B Bg6 Bf5 Rh8 c8B Bh5 Nf3 g1B Ba6 Rh7 Nh4 f3+ Ke1 e2 Kd2 e3+ Kc3 e1B+ Kd4 e2+ Kd5 Rf7 Kd6 Bd4 Be3 Bd2 Qb3 e1B Na3 Bc1 Bb1 Bec3 Bfd3 B3b2 Nc4 f2 Bae4 Rh7 Nf5 Bg7 Rf1 h1B Bf3 Ba7 Bb6 Bb8+ Ke6 Bd4 Ba8 Bb7 Rh1 Ne5 Rh4 Bhf3 Rh6 Bbe4 Bc6+ Nd7 Rg6 Rh2 Rh6 Bf8 Bbc2 Bcb2 Rf1 Rg2 Bb1 Bc1 Rh3 Bdb2 Rh6 Bg7 Bc7 Ba7 Ba8 Bb7 Ba5 Bc8 Bc6 Bb7 Kd6 Kf7 Bb6 Bh8 Kc7 Ke6 Kd8 Bb8 f7+ Bhf6 Ncd6+ Ke5 f8Q Bh8 Qfg8 Bg7 Ba5 Bf6 Nh4 Kd4 Nhf5+ Kc5 Qge6 Bg7 e8Q Bgd4 Ke7 Nf6 Qg6 Bde3 Qgg8 Bed4 Bb4+ Kb6 Bc5+ Ka5 Ne8 Bh5 Ba7 Bf3 Bb6+
brNb3q/2bq3N/7N/4QnP1/3B1Qpk/2r2Rr1/BP2R3/1NN1KQ1q b - - 0 1 legal: proof: c4 b5 a4 d5 axb5 h5 cxd5 f5 e4 Na6 exf5 Nb8 f4 g5 Ke2 g4 Ke1 Nd7 Ra2 Ndf6 Ra1 Nh7 g3 Ng5 fxg5 h4 Be2 hxg3 Bd3 Be6 Bf1 Bc8 d4 Kf7 h4 e5 b6 a5 b7 c5 b8Q e4 d6 c4 d7 c3 h5 c2 d5 e3 d6 a4 h6 g2 h7 a3 f6 Kg6 f7 a2 Rh2 e2 Be3 c1R Bd4 Bb7 Qc7 Qe7 d8N Rc3 d7 Nh6 Qf4 Rb8 Nc6 Ba8 d8N Nf5 Na7 Qd7 Nc8 Bd6 Qd3 Rf8 h8Q Bc7 Qhe5 Rh8 Qc4 Rhh3 f8N+ Kh5 Nh7 Kh4 Nf7 Rg3 Nh6 Rc3 Kd2 e1B+ Kd1 Rg3 Ne2 g1Q Nc1 Qh1 Re2 Bea5 Qa6 Rc3 Ke1 Rhg3 Qd3 Qh2 Bg2 Bd8 Bd5 Bac7 Qdf3 Qh3 Qf1 Qh1 Nd2 Qh3 Rb1 a1Q Bb3 Qa7 Ba2 Qh1 Ra1 Qe8 Nb1 Qab7 Bf7 Qbc6 Ra3 Qh8 Ba2 Qd7 Rb3 Rc6 Rbe3 Rc3 Rf3
1K6/1Q5r/2Q1pr1p/2Q2BP1/q1PR1nn1/Q1r3Rp/n1Bb2k1/N1QN3R b - - 0 1 legal: proof: e4 b5 h4 c5 d4 f5 exf5 b4 dxc5 Ba6 h5 Bc4 Bh6 Bf7 a3 gxh6 axb4 Bg6 hxg6 h5 b5 h4 Ke2 a5 Kd3 d5 Kd4 Kd7 Ke5 a4 b4 e6 c4 h3 f4 h6 g4 d4 b6 Kc6 f6 a3 g5 a2 g7 d3 b5+ Kb7 c6+ Kc8 b7+ Kc7 f7 d2 f5 Bc5 f8Q Ba3 f6 Ra4 f7 Ra5 Nc3 Kb6 c7 Ra8 c8Q Rh7 Qc1 d1R Qc6+ Ka7 b6+ Ka6 Nf3 Rd3 Ne1 Nf6 g8B Qd7 Nd1 Nd5 Nc2 Rc3 Bd3 Bb4 Qfc5 Nf4 f8Q Ba5 Rb1 a1N Bf5 Nb3 Na1 Qe8 Kd6 Nd7 Kc7 Ne5+ Bf7 Ng4 b8R Bb4 Rd8 Rb8 Qd2 Nc1 Rd4 Na2 Qc1 Rd8 Rb2 Rd5 Bc2 Rf5 Rb3 Rf6 Qfe7 Ba5 Bfg6 Qa8 Bgf5 Qe8 Qe4 Qa4 Kb8 Bb4 b7 Ba5 Q5a3 Bb4 Qd7 Kb6 Qee3 Kc5 Qe8 Nd5 Qb5+ Kd6 Qf3 Ke5 Qb6 Nf4 Qfc6 Ba5 Qbc5+ Nd5 Rd2 Kf4 Rd4+ Kg3 Qe8 Kg2 Qec6 Rg3 Rf3 Nf4 Kc8 Ne2 b8Q Nf4 Qbb7 Bd2 Kb8 Nd5 Rff1 Rc3 Rf3 Nf4 Rg3+
1q4r1/1Q1b3B/R4RN1/3RN1BR/3qq2p/1Rb2r1P/Prn1n2Q/2qkN2K b - - 0 1 legal: proof: d4 a5 c4 e5 dxe5 b5 f4 g5 fxg5 Nh6 cxb5 Ng8 b4 axb4 Kf2 Ke7 g4 Ke6 Kg2 f5 e4 h5 b6 c5 b7 d5 g6 f4 g5 b3 g7 c4 g6 b2 Nd2 b1Q Qc2 d4 Ngf3 d3 Ne1 c3 Nc4 d2 Bd3 Ne7 g8R d1Q g7 Nbc6 b8Q Nb4 Qb7 f3+ Kg1 Qd6 Bg5 Ned5 h3 h4 Qh2 Rh6 Rh8 c2 g8N c1Q Ne7 Bd7 Ng6 f2+ Kg2 Qbc2 Rf1 Nc3 Kh1 Ne2 Rb1 Bg7 Rb3 Qb8 Rd8 Q2b1 Bc2 Qd4 Bd3 Be8 Rd5 Bd7 Bc2 Rh8 Bd3 Rg8 Bc2 Bf6 Bd3 Kf7 e6+ Kg7 e5 Nc2 e7 Ra6 e8R Rb6 Rg1 f1R e6 Rf3 e7 Kf7 Rf1 Ke6 Nce5 Rb4 Rc3 Rb2 Rb3 Bg7 Rd8 Bh8 Rc5 Bf6 Rc6+ Kd5 e8R Bh8 Ra6+ Kc5 Nf7 Bg7 Bf5 Kc4 Re5 Bh8 Rd5 Bg7 Re8 Bf6 Ree5 Bg7 Rbb5 Kc3 Re3+ Kd2 Reb3+ Kd1 Nfe5 Bf8 Be4 Bb4 Rbc5 Bc3 Rf2 Re3 Rff6 Rg3 Nf8 Rf3 Bh7 Na1 Rca5 Qe4 Nfg6 Nc2 Bd2 Qc8 Ng4 Na3 Rh5 Qf8 Rad5 Nc2 Bg5 Qb8 N4e5
2nKb3/2pB2B1/1k1N1Qn1/4bRPP/3r1qN1/1RQ1qnB1/3B1B2/Rrn1b3 b - - 0 1 illegal: No proof kernel
4q1k1/P3R2r/p1Q1p1NQ/5p2/1B1Qr1P1/2QB3n/1NK1bnq1/1nbQ2RN b - - 0 1 illegal: No proof kernel
B4b2/B1Pp3n/B1q1B2b/b1RB2q1/1R5Q/2K2N1p/1r1PBbk1/2B4N b - - 0 1 legal: proof: e4 c5 h4 g5 hxg5 b5 b4 f5 c4 fxe4 Bb2 a5 bxa5 Nf6 Be5 Bb7 Bxb8 Bd5 cxd5 Ng8 Nc3 Ra6 Nb1 Rc6 dxc6 Qb6 Qc2 Qc7 Qd1 Qd8 a4 Kf7 f4 Ke6 g4 Kd5 c7 h5 g6 e5 a6 c4 a7 c3 a8B+ Kd4 g5 h4 f5 h3 g7 c2 g6 c1B a5 b4 a6 b3 a7 b2 f6 e3 f7 e4 Bd5 e2 a8B Ba3 f8B Rh4 Qa4+ Bb4 Nc3 b1Q Nd1 Nf6 g8B Qc2 g7 Qc6 Rb1 Ba3 Bge6 Nh7 g8B Qg5 Nf2 Rh5 Bc4 Ba5 Ba6+ Ke5 Rc1 Kf4 Nf3 Kg3 Ba7 B3b4 Bg7 Bf8 Bb2 Rh6 Bd5 Re6 Bf7 Re5 Bde6 Rb5 Rc5 Rb4 Bc1 Rb2 Nd4 Bh6 Rg1+ Kh2 Nh1 Bf8 Kf2 e1B+ Ke2 e3 Kd3 e2 Rg4 Bg3 Kc4 e1B Be2 Bef2 Nf3+ Kg2 Qb4 Bh6 Kc3 Bf8 Rd4 Bh6 Bd5 Bd6 Bfe6 Bb6 Qa4 Ba5+ Rb4 Bdf8 Qc2 Qf5 Qe4 Qg5 Qh4
3bb1KR/1k5Q/qP2Q1R1/p2P1rp1/3BB1r1/1ppQ2qN/4B3/R1N3Q1 b - - 0 1 legal: proof: c4 b5 e4 f5 exf5 h5 a4 e5 g4 b4 gxh5 d6 d4 d5 cxd5 exd4 Be2 c5 Qd2 c4 Kd1 Nf6 Bf1 Ne4 Ke1 Na6 Qd1 Nc7 b3 Nb5 axb5 c3 Ba3 Nd2 Bc1 Nc4 bxc4 Be6 Bd3 Bd7 Bf1 Bc8 Ke2 Kd7 Kf3 Kc7 Kf4 a5 Ke5 g5 f4 d3 h4 d2 b6+ Kb8 h6 Rg8 f6 Rg7 f5 Rg6 f7 Rd6 h7 Rh6 h8R Bc5 f8Q Bd7 h5 Be7 c5 Qe8 f6 Kb7 c6+ Kc8 f7 Bh3 c7 Bf5 Nh3 Bd3 Be2 Qd8 Qe8 Bf8 Qe6+ Qd7 Qg1 d1Q Be3 Kb7 c8B+ Kb8 Nd2 Ra7 Nb3 Ba6 Bd4 Bc5 f8Q Qf1 Qff5 Bb5 Qd3 Be7 Nc1 b3 Rh2 Rf6 h6 Rf4 h7 Rg4 Rg8 Rc7 h8Q Bd8 Rg6 Ra7 Qh7 Qc7+ Qd6 Ra8 Bf5 Be8 Ke6 Kb7 Be4 Rc8 Qh6 Qb8 Qh7+ Rc7 Rh1 Rf7 Rh2 Qc7 Qe7 Rf5 Qf6 Bd7+ Kf7 Qg3 Kg7 Ba4 Qe6 Be8 Rf2 Re5 Rf8 Rf5 Rh8 Qd1 Qc2 Qdd3 Qcd1 Qb5 Qd3 Qa6 Kg8+
bQQ1RR2/1N4QN/rbBQBK1b/1b6/P1k5/3qn2p/Rr3P2/4n1qB b - - 0 1 legal: proof: e4 d5 b4 a5 bxa5 g5 c4 f5 exf5 c5 cxd5 g4 Ba3 g3 Bb4 cxb4 hxg3 Kd7 g4 Ke8 g5 Ra6 Be2 Ra7 Bf1 Ra8 Ke2 Kd7 Kf3 Kd6 Ke4 Kc5 Ke5 h5 g4 b5 a4 b3 d4+ Kb4 a6 b2 a7 h4 f6 e6 d6 h3 f7 Nf6 d7 Rh7 d5 Kc5 d6 b4 g6 b3 g7 Rh6 g8B Rh7 g5 Ba6 g6 Bh6 f8R Bb5 g7 Na6 Ra2 Nb4 Na3 b1B Nf3 b2 Nc4 Nfd5 Ng5 Nc2 Bg2 Ne1 Na5 Ne3 Nb7+ Kc4 Bc6 Be4 Qa1 Rb8 a8B b1Q Rg1 Rh8 Nh7 Qd1 Rh1 Qg4 Bf7 Qg1 g8Q Bf3 Qg3 Rg8 Qb1 Rg6 Qf5 Rf6 Qg7 Bd5 Nc5 Rb6 Nb7 Ra6 Qfg4+ Rf4 Qg3 Rd4 Bg8 Rd2 Bf7 Rb2 Bg8 Qe7 d8Q Qd7 Kf6 e5 Qb8 e4 Q3g6 Nf1 Be6 e3 Qge8 e2 Qee7 Qd8 d7 Ne3 Qc8 Nd3 Qb8 e1B Qc8 Ba5 Qb8 Qg3 Re1 Qg1 Re2 Ne1 Qc8 Qe8 d8Q Bb6 Qed6 Qd7 Qdb8 Qd6 Qdd7 Qa3 Qdd6 Qd3 Bed7 Nf5 Ree8 Ne3 Be6 Nf1 Na5+ Kd4 Bcb7 Ne3 Nc6+ Kc3 Na5+ Bdc4 Bh1 Bc6 Nb3 B4b5 Nc5 Bd5 Bc6 Be4 Bcd7 Ba8 Bdc6 Kb4 Nb7+ Kc3 Bg4 Kc4 Be6+
1Nq2rqR/6k1/Q1rpR3/nP1NQ1r1/R5Bn/Rr4B1/2P1Q1q1/2KN3r b - - 0 1 legal: proof: d4 b5 e4 c5 f4 cxd4 a4 f5 exf5 Nh6 axb5 Ba6 f6 Bc8 g3 Ng8 h3 g6 f5 Bh6 Ra2 Bb7 Ra1 Bf4 gxf4 Bc8 Be2 g5 Ra5 g4 Bc4 g3 Bf1 Bb7 Ra2 Bf3 Ra1 Bg4 hxg4 Kf8 Rh2 Kf7 Rh1 Ke8 Kd2 Kf7 b4 e5 b6 h5 b7 a5 b5 g2 g5 e4 Rh4 d3 Be2 d6 Ra3 a4 Nh3 g1Q Nf2 Qc8 Nc3 Nc6 b8N Qg2 Nd5 Nge7 Bg4 Na5 Qe2 Rg8 Nd1 Ng6 Bb2 e3+ Kc1 Kf8 f7 Ra6 Bc3 Rc6 Be1 Kg7 f8R Rh8 Rf6 Rf8 Re6 d2+ Kb1 Nc4 Bg3 Na5 Ra1 a3 f6+ Kf7 f5 a2+ Kb2 Kg8 f7+ Kg7 Rh3 h4 f6+ Kh8 Rc1 a1R Rb1 Ra3 Ra1 Rd3 Ra4 Rb3+ Ka1 Ne7 g6 Nf5 g7+ Kh7 g8Q+ Kh6 Qe1 e2 Qh8+ Kg6 Qf1 e1Q Qe2 Qeg1 Ka2 Re3 Kb2 Rf3 Rh1 h3 Kb1 h2 Kb2 Rg8 f8Q Nh4 f7+ Rf6 Qe8 Rf8 Qh5+ Kg7 Qhe5 Rg8 Qe7 Rf8 Qa7 Rg8 Nf2 d1R Qa6 Rd3 Nd1 Rb3+ Kc1 Rf8 Qh5 Rg8 f8R Rf5 Ra3 Rg5 Rf4 Rf8 Rfa4 Qa7 Re1 h1R Rh6 Qe7 Rh8 Qee6 Qe8 Qg8 Q8e5+ Kf7 Rf1+ Kg6 Rf6+ Kg7 Re6+
qn1qR3/p1B1bP1k/2pr4/N3bQ1B/7R/KN4Q1/2PrR1N1/2B1q1bB b - - 0 1 legal: proof: d4 f5 a4 e5 e4 b5 axb5 Qe7 g4 Qf7 dxe5 fxe4 f4 Qe7 f5 Qd8 f6 Ba6 Nf3 Bb7 Ng1 Bc8 h4 Bb7 Bf4 Bd5 Bd2 Be6 Bc1 Bf5 gxf5 Be7 Ne2 Ba3 Ng1 Bf8 Rh2 g5 Qd6 g4 Rh1 Nc6 Qd1 Nd4 Bh6 Ne6 Bc1 Ng5 hxg5 Qb8 Qd3 Qc8 Qd1 Qd8 Kd2 Kf7 Kc3 h5 Kb3 d5 g6+ Ke8 g7 Kf7 b6 e3 e6+ Ke8 b7 g3 b8N h4 e7 Kf7 e8R g2 Nc6 h3 Qg4 d4 Nf3 g1B Nbd2 d3 Qg3 h2 Be2 Rh5 Nh4 Bf2 Ng2 Be7 Na5 Rh6 Bh5+ Rg6 Ka2 e2 b4 e1B b5 Bg1 Ndb3 d2 b6 d1Q b7 Bc3 b8B Be5 Rb1 c6 Bc7 Q1d7 Ra1 Q7c8 Rb1 Rb8 Ra1 Rb4 Ka3 Qa8 Rb1 Bgc5 Re1 h1Q Re2 Qe1 Rb2 Bg1 Ra2 Nh6 Rb2 Ng4 Ra2 Bf8 Rb2 Kg8 f7+ Kh7 f6 Be7 f8Q Rh6 Qf7 Rg6 Qe6 Rh6 Qf5+ Rg6 f7 Nf6 Ra2 Nd7 g8B+ Kg7 Bh7 Nb8 Bg5 Rd6 Bc1+ Bg5 B7g6 Rbd4 Bf3 Rd2 Bgh5 Rf6 Nh4 Rh6 Bh1 Rhd6 Ng2 Kh6 Kb4 Be7 Ra4 Qd7 Ka3 Qd8 Qe6+ Kh7 Rh4 Bc3 Qf6 Be5 Qf5+
4bbNN/p1RBQ1n1/5qB1/1r2QPB1/2RP1R2/4Kb2/k2N1p2/N1n1bb2 b - - 0 1 legal: proof: c4 b5 f4 e5 h4 d5 cxd5 f5 e4 g5 a4 gxh4 axb5 Na6 fxe5 f4 Qa4 Rb8 Qd1 Rb6 Qe2 Rf6 Qd1 Rf5 exf5 Ke7 Nc3 Kd7 Nb1 Ke8 Ke2 Kf7 b4 c5 d4 h5 g4 c4 d6 f3+ Ke3 f2 b6 h3 g5 h4 d7 h2 g6+ Ke7 b5 h3 g7 c3 b7 c2 b8R Nc7 e6 Kd6 b6 Kd5 b7 Qf6 d8N Na6 e7 Nb4 e8B Na2 Nf7 Bd7 Rc8 Bc6 Ne2 Kc4 Qe1 Kb3 b8Q+ Bb5 Rg1 h1B Rc4 h2 Qe5 Bf3 Rg4 h1B Rf4 Bhg2 Bd7 Rh6 Nh8 Bbc6 Bd2 c1B Be8 Ba4 Bg6 Be8 Qe7 Ba3 Nc1+ Kb2 Nb3 Bb4 Rc7 Nc1 Bb5 Bf1 Ra4 Bc3 Rac4 Ka2 Na1 Ba5 Bc3 Bb4 Bb2 Bc3 Qe2 Be1 Nd2 Qd6 Ba3 Bf7 Qd7 Bh3 Bh5 Qb6 Be7 Bf1 Bg5 Nf6 g8N Ne8 Qe7 Ng7 Bd7 Be8 Bf7 Rd6 Bh5 Rd5 Bg6 Bh5 Ke4 Qf6 Qe3 Bd1 Qe2 Rb5 Kf3 Bb3 Q2e4 Bd1+ Ke3 Bf3 Q4e5
Rbn1N3/3Pn3/1k2Q3/p3qNr1/1p2n1RN/1nB1KPQB/4Rr1r/1RQ5 b - - 0 1 legal: proof: b4 b5 e4 c5 c4 h5 g4 f5 exf5 d5 cxd5 Ba6 gxh5 cxb4 a4 b3 Nh3 b4 Ng1 Bb5 axb5 Qd6 Nh3 Qb6 Ng1 Qd8 Ke2 Kd7 h4 Kc7 d4 e5 b6+ Kb7 f6 g5 h6 a5 h5 e4 f7 b2 f3 g4 h7 g3 d6 g2 h6 e3 d7 Bg7 f8N Nf6 d5 Qc7 d8R Nh5 d6 Kc6 d7 Qd6 b7 Nf6 Nc3 b1R Re8 Ng8 Nd5 Be5 Nf6 Bh2 Bd2 Qd4 Bc3 Qe5 Qc1 Ne7 Ng6 Nc8 Nh4 Kb6 Re6+ Nc6 Ne8 Rg8 h8Q Rg5 h7 Rb2+ Kd3 e2 Qf6 Ra6 h8R Ra2 Rb1 e1N+ Kc4 Nc2 Kd3 Na1 Ne2 g1N Ng3 Ne2 Bh3 Ra8 Ngf5 Nb3 Rg1 Ng3 Rg2 Ne4 Rg4 Rf2 b8Q+ Kc5 Ke3 N6e7 Rd6 Ra6 Rd2 Rc6 Qbd6+ Kb6 Re2 Bg3 Qg7 Bh2 Qd5 Rh6 Rf8 Qf6 Qgg8 Bb8 Qe5 Rh7 Qg3 Qe5 Qe6+ Nc6 Neg7 Ncd6 Ng6 Ne7 Bg2 Ba7 Ra8 Bb8 Ne8 Rh3 Ngh4 Rh2 Qf7 Ndc8 Bh3 Nc6 Qd5 N6e7 Qe6+
1q2rbQ1/B1R2br1/NpN4R/2P1n3/N3BK1n/3r1P2/B1nQ2b1/Q2Nr1k1 b - - 0 1 legal: proof: e4 a5 b4 axb4 g4 c5 d4 h5 dxc5 f5 exf5 Kf7 gxh5 Ke8 Ke2 Kf7 Kf3 Kf6 h4 Ke5 c4 d5 a4 g5 a5 d4 h6 e6 a6 b3 a7 d3 f6 Kd4 h7 g4+ Kf4 d2 h5 b2 f3 g3 c6 g2 c7 Nh6 f7 Ng8 h6 Nc6 Nh3 g1R Nf2 Nge7 Nc3 b1B Na4 Rhg8 h8Q+ Ne5 h7 Nf5 Rh6 R8g7 Qg8 Ba2 h8Q Nh4 c5 b6 Bc4 Ba6 c8N Re1 Ne7 Qb8 Qe2 Bb5 Nd1 Bb3 Bd5 B5c4 Qh2 Bf1 Nc6+ Kd3 Bb2 Bg2 Be4+ Ke2 Bc3 Be7 f8N Kf1 Nd7 Bf8 Bb1 Bc4 Ba2 Bd5 Nf6 Bb3 Nd5 Bc4 Ndb4 Bb3 Qg3 Kg1 Qg5 Bd5 Na6 Bb3 Ne3 d1R Qd8 Rd3 Nd1 Qd6 Qd7 Re8 a8B Qb8 Qd8 Ng4+ Be5 Bc4 Bd6 e5+ Kg3 e4 Kf4 e3 Be5 Rc3 Qd2 e2 Bd6 Bf7 Bb7 Qa8 Bb8 Ne5 Ba7 Qd8 Na5 Qa8 Be4 Qb8 Nc6 Rd3 Bb1 Ng4+ Nc7 Qa8 Nac3 Rg5 Bb8 Rf1 Ra7 e1N Na6 Nc2 Ba2 Re1 Na4 Qb7 Qb2 Rg7 Qa1 Qc8 Re7 Ne5 Ba7 Qb8 Rc7
1Q1Nkr2/1n4R1/BBNb3P/3r4/P5nq/1r2qBp1/bR1NRnK1/B2r2Q1 b - - 0 1 legal: proof: f4 a5 g4 d5 c4 h5 cxd5 e5 fxe5 Bd7 gxh5 Bc8 b4 axb4 Kf2 f5 d4 g5 h4 b5 e4 c5 a4 b3 e6 f4 d6 g4 e5 b2 e7 g3+ Kg2 b4 d7+ Kf7 e8R b3 h6 c4 h5 c3 d5 c2 h7 Na6 d6 Qh4 d8B Be6 d7 Nh6 Nd2 b1N Bb2 c1Q Bb6 Nc3 Ra2 Rd8 Ngf3 Nc5 Ba1 b2 Ba6 b1R Rb2 Ng4 Nd4 Ba2 Qg1 Bd6 Nc6 Rf8 h8Q Nb7 h6 Qe1 Rh2 Qe3 Re6 Ne4 Rg6 Nef2 Rg8 Rb8 d8N+ Ke8 e6 Rc1 e7 Rc5 Rg7 Rd5 Qg8 f3+ Kf1 Ne4 Re2 f2 Kg2 f1R Qh8 Nef2 Qg8 Rd1 Qh8 Kd7 e8B+ Kc8 Bf7 Kd7 Be6+ Ke8 Qg8 Rb5 Bd5 Rb3 Bf3 Rc8 Na5 Rc5 Nac6 Re5 Qc4 Rd5 Qf4 Bb4 Qc7 Bd6 Qb8
RQ4r1/qQ4pQ/1b1r4/NN1Q1b1B/1PR1nK1P/4n1Nq/2kprn2/2B4B b - - 0 1 legal: proof: e4 b5 g4 c5 d4 cxd4 a4 h5 gxh5 f5 axb5 Nh6 exf5 Ng8 Kd2 Kf7 h4 Kf6 f4 e5 c4 d5 b4 a5 c5 d3 Ke3 e4 b6 a4 c6 d2 b7 a3 h6 a2 c7 Qd7 h7 Nh6 Bg2 Ra4 Ne2 Rg8 h8Q Na6 b8N Nc5 Qh7 Ra6 Na3 Rd6 Nc6 Qe6 Ng3 d4+ Ke2 e3 Kf3 d3 Nb5 e2 Na5 Bd7 c8B e1R Rh3 Ng4 Bh1 Be7 Qb3 d1N Qd5 d2 Bb7 Kf7 f6 Ngf2 f5 Nce4 Kf4 Bd8 Bf3 Bb6 Bh5+ Kf8 f7 Ke7 Ba8 Kf6 Rh1 Ne3 f8Q+ Qf7 Qc8 Qe6 Qcb7 Re2 Ba3 Bc8 Rhc1 Qd7 Rc4 Qe6 Rb1 a1Q Rb2 Qd7 Ra2 Qh1 Bc1 Qh3 Qb8 Qa7 Ra1 Ke7 f6+ Kd7 Qdb7+ Ke6 f7 Kf6 f8Q+ Ke6 Rc6 Kd5 Qd8 Bf5 Nc7+ Kd4 Nb5+ Kd3 Rc4 Nc3 Ra4 Kc2 Qdd7 Rf6 Qdd5 Rd6 Nb3 Nh1 Qdc6 Kd1 Qf7 Qa5 Qc5 Nf2 Bh1 Nce4 Qcd5 Qa8 Ra1 Qb7 Ra8 Qe7 Na5 Qa7 Nc3+ Kc2 Qe7 Rgd8 Qeb7 Rg8 Nb5+
2R4n/2rPQN1p/2BrRpR1/K1Nk4/n4Q1r/B3bn1R/5nqP/n1B2Q2 b - - 0 1 legal: proof: f4 b5 c4 d5 cxd5 f6 a4 Na6 axb5 Nb8 f5 Be6 g4 Kd7 g5 Bf7 g6 e6 gxf7 exf5 Qb3 f4 Qc2 Bd6 Qd1 Bf8 b4 Kd6 d4 g5 Kd2 c5 Kc3 a5 e4 c4 e5+ Kc7 d6+ Kb6 d5 f3 d7 a4 e6 f2 e7 g4 e8R a3 d6 a2 Nf3 g3 Ne5 g2 Re6 g1N Nd2 Ra4 Ne4 Nf3 Rg1 Ne7 Nc5 Na6 Rg6 Bh6 f8B Qa8 Nf7 Be3 d8R Rg8 Rc8 Rg7 Be2 Qb7 Qf1 Qa8 Rb1 a1N Rb2 Qe4 Rb3 Qg4 Bd3 Qg2 Be2 Ra2 Ra3 Rd2 d7+ Rd6 Rb8+ Kc7 b6+ Kc6 b7 Kd5 Rc8 Rg8 b8Q Rg7 Na4 Nc5 b5 Rg8 Kb4 c3 b6 c2 b7 Rg7 Qh1 f1N Ka5 Ng3 Qf1 Nge4 Bb5 Nf2 Qc7 Rg8 b8Q Rg7 Qd8 Rg8 Rg7 Ng6 Qe7 Nh8 Rg4 Rg6 Rb3 Rh6 Rg6 Rh4 Rc3 Ncd3 Nc5 Nb2 Ra3 Na4 Rb3 Rc6 Qf4 Rd6 Bh6 Bd4 Ba3 c1R Rbe3 Nd2 Rh3 Nf3 Qg4 Rc4 Bhc1 Be3 Qf4 Rc2 Nb3 Rcc6 Nc5 Rc7 Bc6+
N2K4/R1pRQ3/2PBq1p1/Qn2rbR1/bqBP2B1/bBp4p/2N5/k2N2r1 b - - 0 1 illegal: No proof kernel
kQqB3R/3Qp1nR/p2N4/P3PBN1/nN1r1r1r/4Brb1/3r1R1B/5Knb b - - 0 1 illegal: No proof kernel
6N1/rNbK1nRq/pN6/3b1Np1/PN1N4/1pqpBBRn/QP5R/q5k1 b - - 0 2 illegal: No possible last move
1bB3NK/1Q1Q1bQQ/p1qR4/1Rr1rQ2/3rp1bQ/P3r3/2kNPn2/1b4Bn b - - 0 1 illegal: No proof kernel
1B3n2/1qpn4/bb1pQk1n/R4p1B/PK1R2RN/NN1N3b/P4B2/1rB1r3 b - - 0 1 illegal: No proof kernel
k2K4/2Rp1Bp1/3PN1Q1/q4bp1/R3PBB1/1B1RrR2/1qnr1nN1/1N1b3q b - - 0 1 legal: proof: g4 b5 f4 a5 b4 e5 bxa5 h6 fxe5 b4 g5 b3 c3 Bb4 cxb4 hxg5 Kf2 f5 Kf3 c5 d4 b2 a4 c4 h4 c3 d5 c2 a6 f4 Ke4 f3 a7 f2 a5 Ke7 b5 Rh6 b6 Ke8 e6 Nc6 h5 Ke7 b7 Kd6 b8R Kc7 e7 Qe8 a6 Rd6 h6 Na5 Ke5 Rg6 e4 Rc6 h7 Rg6 h8R Nf6 Bh3 f1Q Bg4 Qf8 e8B Rh6 Ne2 Rh4 Nf4 Rh3 Ng2 Bb7 Bf7 Qc5 Rbf8 Nb3 Bf4 c1Q Ra4 Re3 R1h3 Qh1 Qd3 Rc8 a8N+ Kb8 Nc7 Qa5 Kd6 Nd4 Ke7 Nc2 Ne6+ Ka8 a7 Qcd2 d6 Bd5 Qb5 Bc4 Qf5 Qe2 Nd4 Be6 Qg6 Bf5 Ne6 Rb8 Rc8 Qeb5 Rf3 Qbb6 Bh3 Ng4 Rc7 Nf2 Bg4 Qbb4 Rh5 Rb5 Rh4 Rd5 Rhh3 Rd2 Kd8 Qbb5 Nc3 b1B Rhg3 Ba2 Nb1 Qb2 Rh3 Rc3 Rd3 Ra3 Rhf3 Bb3 Rdd4 Ne1 Rd5 Bd1 Rdd4 Re3 Rd3 Qab4 Rc2 Kb7 a8B+ Kb8 Rc6 Qa5+ Rc7 Nc2 Bb7 Ka7 Bd5+ Kb8 Ba2 Ka8 Bb3
5Q2/1b1qNRN1/1BB1NpB1/6RK/2r2R1b/p4PRn/Pq1r1bN1/1kr1n2q b - - 0 1 legal: proof: d4 e5 dxe5 c5 b4 h5 g4 hxg4 bxc5 Be7 Bg5 Bd6 Bc1 Bf8 h4 Ke7 e4 Ke6 Ke2 a5 c4 b5 c6 g5 h5 d5 h6 a4 c5 b4 h7 d4 c7 g3 Kf3 a3 Kg4 g2 f3 d3 c6 d2 Rh4 b3 Bb5 b2 Nh3 g1B Nc3 b1Q Nd5 Qb2 Ne3 Bb7 c8R Nd7 c7 Nc5 Ba4 Qd7 Nf4+ Ke7+ e6 Kf6 Bb5 Be7 Rf8 Ra4 c8N Ke5 Bc6 Kd4 e5 Nd3 Qb3 Rc4 Qb4 d1Q Rh3 f6 Rf7 Bc5 Rh4 Ba7 Qf8 Ne7 Bd2 Nd5 Ba5 Bc5 Bb6 Kc3 Rb1 Rg8 h8R Rg6 Kh5 g4 e7 g3 e8N g2 e6 Bb4 Nf5 Kc2 e7 Be1 Ne6 Qdc1 Rd4 Bh4 Rg8 Be3 Re4 Qh1 Rg1 Rg3 Rg5 N5f4+ Kh6 Nh3 N8g7 Bc5 Kh5 Bd4 Rf4 Rg4 Re1 g1R Re2+ Kb1 Rg2 Rg3 Ne3 Rgc1 Rg1 Ne1 Rg2 Nf2 Rg1 Rh3 R1g3 Bc5 e8B Bd4 Re7 Rh2 Bf7 Nh3 Bg6+ Rhc2 Ng2 Bg1 Rf7 Bf2 Re4 Re2 Ne7 Rd2 Rf4+
r1RN4/1K3b1n/1P3n2/2RQrP1b/1bB2qRB/1nB5/1B3p1k/1QbrNR2 b - - 0 1 illegal: No proof kernel
3R1BNR/6K1/p4N2/k2Bn3/2P1br1b/nNQQpNnP/Q2n1rq1/6Qn b - - 0 1 illegal: No possible last move
1N1N4/3N1n1K/PQ1N3R/b6P/n1R3rQ/2q2QNk/r2b2qp/b2QB2q b - - 0 1 illegal: No proof kernel
1Qn2r2/N5Q1/1B1br1PQ/1q1RBB1P/7N/q1N1Q3/bB1np1K1/qq1k4 b - - 0 1 legal: proof: c4 d5 cxd5 f5 a4 b5 axb5 Kf7 e4 Ke8 exf5 Ba6 Nf3 Bb7 Ng1 Bc8 f4 g5 fxg5 h6 g6 h5 b4 Bb7 g4 Bc6 g5 Bd7 Ra3 Be6 Rg3 Bc8 Rg4 hxg4 Kf2 Kd7 d4 Kd6 h4 e5 g7 a5 b6 c5 h5 e4 f6 e3+ Kg2 g3 b7 c4 g6 e2 f7 a4 b5 a3 b6 a2 Qd2 a1Q Nc3 Na6 Nf3 Qg5 Nh4 Nc5 Qe3 Ne4 Bb2 Ne7 g8Q Be6 Qg7 Nd2 b8N Ra7 b7 Nc8 Nc6 Ra6 Na7 Be7 f8Q Rg8 Qff3 Rf8 Qff4+ Qe5 Qfh6 Qg5 Na2 c3 Rg1 c2 Nc3 c1Q b8Q+ Kd7 d6 Ba2 Rh1 Qb5 d5 Qab1 Nd1 Qcc5 Nc3 Qa3 Rh3 Ra4 Rh1 Re4 Rh3 Re6 Rh1 Kd8 d7 Bd6 Rg1 Rf7 Rh1 Ke7 d8B+ Kd7 Bc7 Qa1 Kh3 g2 Bb6 g1Q Bc7 Bb4 Be5 Bd6 Bg2 Qge1 Be4 Qeb1 Kg2 Ke7 Bf5 Kd7 Qg8 Rf8 Rd1 Ke7 Bf4 Kf6 Qgh7 Bb4 d6 Bc5 d7 Bb4 Bc7 Bd6 Qf2 Ke5 d8B Bc4 Qg3+ Kd4 Qf3 Ba2 Q7g7+ Kc4 Qfe3 Kb3 Bf6 Re7 Be5 Re6 Bg4 Kc2 Bb6 Nc4 Rd5 Nd2 Na4 Kd1 Bh3 Qc1 Bf5 Qcb1 Nc3+
b2N2bq/1bRQ1kb1/n1P2N2/2R2N1n/r2r1RPb/2B5/q1nBBP1K/Q7 b - - 0 1 illegal: No possible last move, all moves rejected
nnr3Bn/3P1q1Q/QB1rR1b1/1P2RbrN/K3pk2/R1N2q2/3bQ1P1/4B3 b - - 0 1 illegal: No proof kernel
n1r5/kRN3KQ/p2p1p2/b1pB1Q2/qBP1RPRn/1P6/3nQ2N/rrN5 b - - 0 2 legal: proof: d4 g5 h4 gxh4 a4 e5 dxe5 d6 a5 a6 Nd2 Nc6 Nb1 b5 axb6 Na7 b7 c6 bxc8Q Rb8 Ra3 Rb3 Ra1 Rb5 Qa8 Rc5 Kd2 Kd7 Kd3 Kc7 Ke4 Kb6 Kf5 h5 g4 h3 c4 f6 Kg6 h4 e4 h2 f4 h3 e6 Nc8 g5 Ra5 b3 c5 e5 Qc7 e7 Qd8 e8R Qc7 e6 Qe7 Qe4 Qc7 e7 Bg7 Qde2 Ka7 Bd2 Bh6 Nc3 Qc6 Na2 Bf8 Bb4 Nh6 Bg2 Nf5 Nc1 Qa4 Nf3 Nb6 Rg1 h1N Nh2 Na8 Rb8 Nf2 e8N Be7 Nc7 Nh4+ Kg7 Re8 g6 Rc8 Qf5 Bd8 Bd5 Ne4 Rg4 Nd2 Ra2 Qe8 Rc2 Ra1 Rc3 Qb5 Re3 Qa4 Re4 Rb1 Kh7 Ra1 g7 Rb1 g8Q Ra1 Ne6 Ba5 Kg7 Rb1 Qgh7 Ra1 Nf3 h2 Nc7 h1R Nh2 Rf1 Na2 Rfb1 Nc1 Rb2 Rb6 Rbb1 Rb7#
4BBb1/2P2Rnk/2PQBn1N/4K2N/q7/3BbR2/rNBP1bp1/qn1q1r2 b - - 0 1 illegal: No proof kernel
2RnQn2/6Nk/3qbP2/1B3bR1/3B1PRK/bNR2P2/r1prRn1N/3qb3 b - - 0 1 illegal: No proof kernel
N1BR1Bk1/1n1R4/K1Bn1PR1/1QP2pr1/nP3n1p/1r6/1BqbNq2/6N1 b - - 0 1 legal: proof: e4 c5 d4 cxd4 a4 g5 h4 b5 axb5 Bh6 hxg5 Bg7 e5 Bf8 f3 f5 Rh6 Bb7 Qd2 Be4 Rh1 e6 Qd3 Qf6 exf6 e5 Qe2 Bd5 Qd1 e4 Ra2 e3 Ra1 Be4 fxe4 Ba3 Nd2 Be7 Nb1 Bf8 Ke2 Kf7 Kd3 h5 Kc4 a5 g4 e2 b4 e1Q e5 d3 b6 d5+ Kb5 d2 c4 a4 c5 a3 b7 a2 Bg2 d4 Bc6 d3 Bb2 Qe2 Nc3 Na6 b8B Ne7 g6+ Kg8 e6 Qf2 g5 Nd5 g7 Nf4 Qf1 d1Q e7 d2 e8N Qc2 Bd6 d1N Nce2 Nc7+ Kb6 Nb5 Nc7 Re8 Ka6 Ndc3 Rd1 a1N Na8 Re3 Be7 Rf3 Rd7 Na4 Rh3 Rb3 Rh2 Kf7 g8R Bh6 Rgd8 Nd6 Bf8+ Kg8 g6 Bg5 g7 h4 Rg2 Rh5 Rg3 Kh7 g8B+ Kh8 Bf7 Bh6 Be8 Rg5 Bb7 Kg8 Bc8 Re3 Rg4 Nb3 Rg2 Na5 Rg3 Rg7 Rg6 Bg5 Rh6 Nab7 Qh3 Rb3 Qd3 Ng6 Qb5 Bd2 Re7 Nf4 Bc6 Rgg3 Red7 Rg5 Rg6+
N7/1qpbK1R1/B1qN3R/n5R1/1pP1N3/Pr1QBb2/nNr2BP1/2b2kn1 b - - 0 1 legal: proof: e4 a5 d4 g5 h4 f5 exf5 e5 dxe5 Nh6 hxg5 Ng8 b4 axb4 Kd2 b3 Kd3 Ke7 Kc4 b5+ Kc5 d5 f4 h5 f6+ Ke6+ Kd4 Kf5 f7 b2 e6 h4 g6 h3 g7 h2 e7 Nf6 e8N Qd7 g8R Bh6 f8B Ne4 Rg7 Nc3 Nd2 b1Q Nc4 Nc6+ Kc5 Ke4 f5 d4 f6 b4 f7 d3 Nf3 d2 Ng5+ Kf4 Be7 Kg3 f8N Kf2 Ned6 Ra3 Bf6 Rb3 Nb2 Qe8 a3 Na2 Kd5 Na5 Nd7 Rf8 Ba6 Rf7 Re1 h1N c4 Ng3 Nb6 Ne2 Na8 Qh7 Qc2 d1B Qd3 Qa4 Rh1 Bd7 Rh5 Kg1 Bc3 Rf2 Bd4 Qb5+ Bc5 Qb7+ Ke5 Qg8 Nge4 Bd2 Rf5 Qgd5+ Kf6 Qdc6 Ke7 Be3 Rfg5 Bd2 Qh3 Bf4 Bd2 Be3 Rc1 Bf4 Rc3 Kf1 Rf3 Be3 Rf6 Ng1 Rh6 Bh5 Be1 Rc2 Bf2 Bc1 Qc3 Bd1 Bce3 Bf3 Qd3+
3B1q2/BR1NNq1P/k3b2n/r1r2nqB/1p1P1R2/Q5B1/B4P1b/3Kb1rQ b - - 0 1 legal: proof: e4 a5 b4 axb4 g4 f5 exf5 d5 c4 h5 cxd5 Ra5 gxh5 Ra8 a4 Kd7 h4 b5 d6 Kc6 f6 Kb7 d7 g5 f7 c5 h6 e5 h7 c4 a5 b3 a6+ Kb6 h5 g4 h6 e4 a7 e3 Be2 b2 Nf3 c3 Ne5 g3 Ra4 g2 Bh5 e2 Rf4 c2 Nc3 b1Q Nd5+ Ka6 Ne7 Nc6 d4 Qb2 Qd3 g1R+ Kd2 Qc7 d8B Be6 Nd7 e1B+ Ke2 Rc8 a8B Qa3 Qg3 Bg7 f8B Be5 Bd2 c1Q Qb3 Qc4+ Kd1 Qd5 Qb2 Qac5 Qa3+ Qa5 Rhh4 b4 Rf7 Bg3 Bf4 Bh2 Bg3 Qf5 Rg7 Qf7 Rf4 Rc7 Ng6 Nce7 Bd5 Nf5 Ba2 Ra7 Bd6 Ra8 Bb8 Qcf8 Ba7 Rc8 Ne7 Rc5 Re4 Nf6 Rf4 Ng4 Rg6 Rg8 h8Q Rg7 h7 Ngh6 Rgg4 Rg5 Qe5 Ng7 Qe4 Rgd5 Qh1 Ngf5 Qb3 Qc7 Rg6 Qe5 Rg7 Ra5 Qa4 Rc5 Qa3 Qef6 Rg5 Nh4 Re5 N4f5 Re2 Qg5 Rc2 Rb5 Rc7 Rc5 Rb7
1Knrqr1k/2pQ4/1NP5/1Q1R1B2/1b2NQP1/2Qq3N/2q2RPp/rB5n b - - 0 1 legal: proof: d4 b5 a4 f5 axb5 g5 e4 e5 dxe5 Ba6 exf5 Bc8 f4 Bg7 f6 Bf8 h3 Bb7 f5 Bf3 Bf4 Bg4 hxg4 gxf4 Kd2 Kf7 Kd3 h5 Kc4 a5 Kd5 d6 b4 h4 c4 f3 e6+ Ke8 e7 Kf7 c5 f2 b6 a4 b5 h3 b7 a3 b6 a2 Nc3 h2 Ne4 Bg7 e8B+ Kf8 f7 Bh6 Bd7 Kg7 f8Q+ Kh7 f6 Ra5 f7 Na6 Kc6 d5 b8N d4 Kb7 d3 c6 d2 Qb4 Rf5 f8Q Ne7 Nh3 Qe8 Qc3 Nc8 Bd3 f1Q Bb1 Qd3 Rf1 Nb4 Rf2 Bg5 Be6 Be7 Nd7 Qc2 Kb8 Nd3 b7 Bb4 Qd6 Rff8 Bf5+ Kg8 Qc1 d1Q Nb6 Qde2 Qcf4 Qf3 Re2 Nf2 Qd7 Nh1 Rf2 Qfd3 Ka8 Rh6 b8Q Rd6 Qb7 Rd5 Kb8 Rd4 Qa6 Kh8 Qb5 Qc1 Bc2 Qb2 Raf1 a1R Bb1 Qbc2 Rd1 Qf1 Qcg3 Rd6 Rd5 Qfd3 Qe7 Rd8 Qd7 Qdd1 Qb3 Qdd3 Qc3+
3R4/q1Q2BKR/pbrb4/Q1BP1qk1/n3rB2/4ppP1/1P3NnN/5N1B b - - 0 1 legal: proof: c4 g5 d4 d5 cxd5 Kd7 a4 b5 axb5 Nh6 e4 Nc6 h4 gxh4 d6 Ke6 d7 Nb8 d5+ Kd6 Qd4 Ng8 Qa4 Bh6 Qd1 Bf8 b6 Ke5 Qg4 Bb7 Qd1 Kf6 f3 e5 d6 Bd5 exd5 e4 Bd3 e3 Be2 Qe8 Bf1 Qe4 fxe4 Kg6 Bb5 Kg5 Bf1 Kf6 Ke2 c5 Kf3 h5 Kf4 h3 d8Q+ Ne7 b7 h4 d7 c4 g3 h2 Bd2 c3 Qa5 h3 d8N c2 Ne6 c1B Bb4 Na6 b8B Rh6 Ng5 Nf5 Bg2 Nh4 Bc5 Bd2 N1f3 Bd6+ e5+ Kg6 Qg1 f5 Qc1 Bb4 Bc7 Re8 Nbd2 Bc3 Nf1 Bd4 Ne4 Re7 B5b6 Nc5 Nf2 Na4 Bc5 Re8 Qc4 a6 Rc1 Kh5 Rc3 Rg6 Rb3 Rge6 Rb8 Kg6 Rd8 Rf6 Rg1 h1Q N3h2 Re7 Bf3 Rfe6 Bb8 Rc7 Qcc3 Rc6 Be4 Qg2 Rh1 Qg1 Qc7 Re7 Q3a5 Ng2+ Kf3 Kh6 e6 f4 Kg4 Re8 Kf5 Re7 Ba3 Bb6 Kf6 Re8 e7 Kh5 Nhg4 h2 Kg7 Kg5 Bb4 Rh8 e8B Rh4 Nh6 Rg4 Bc5 Rh4 Bf7 Rg4 Nd2 Qb1 Nf1 Rh4 Nhg4 Qc2 Rg1 h1Q Bf3 Qh3 Ngh2 Qd7 Rh1 Qcf5 Nhg4 Rh8 Rh7 Re8 Ngh2 Re6 Bb4 Re4 Bc5 Nh4 Bh1 f3 Bd4 Qe7 Ba7 Ng2 Be5 Bd4 Bc5 Qed7 Ba3 Bb6 Bc5 Qe7 Qb8 Qb7 Qc7 Qa7 Bf4+
2Kn3N/2b1PP2/3R2B1/1Nn1q2k/2Q1Qn1B/1qN1N1rP/n1bR4/Q1br3q b - - 0 1 illegal: No proof kernel
q2bQR2/Nn1q3B/2n1rR2/p2P2Rq/P2Q1N2/r1b5/1NRP2KB/1k1r2b1 b - - 0 1 legal: proof: e4 d5 exd5 c5 g4 f5 b4 Qc7 bxc5 Qd8 h3 fxg4 Ke2 g3 Ke1 g2 Nc3 g5 Nb1 g4 Qe2 g3 Qd1 Bg4 hxg4 Qc8 Ke2 Qc7 Ke1 Qd8 c4 Kd7 f4 b5 c6+ Kd6 f5 Ke5 g5 Kd4 g6 e5 c5 h5 a3 b4 g7 b3 f6 e4 c7 e3 c8N h4 f7 b2 c6 h3 c7 h2 Qh5 e2 Qg5 Kd3 Nh3 Kc2 Qe3 g1Q Nb6 g2 c8Q+ Nc6 Qd4 Nh6 g8R Bg7 f8R Nf7 Nc3 b1R Nba4 Rh6 Nb2 Re6 Nb5 Nd6 Nf4 Nb7 Ra2 Qd7 Qe8 Ra1 Rf6 Kb1 Rgf8 Qe3 Rg1 h1Q Nh5 a6 Nf4 Qh5 Na7 Qb3 Kf2 Qa4 Nc4 Bh8 Rc2 Qa5 Bb2 Qad8 Rh1 g1B+ Kg2 e1B Bd3 Bh4 Bh7 Qb8 Bc3 Bg5 Nb2 Qbc8 Rg6 Bd8 Rg5 Qb8 Ba5 Bhf6 Bc7 Bh8 Qc4 Bc3 Rh3 Qbc8 Rf3 Qb8 Nb5 Ra7 Qd4 Qa8 Be5 a5 a4 Ra3 Bc7 Re1 Rf6 Ra6 Na7 Rd1 Ng6 Be3 Bh2 Bg1 Rf8 Nb8 R3f5 Re6 Nf4 Nc6 R5f6
B3Rnq1/2N4k/b1N2B2/nr2P1Q1/1NB1p1Kp/n1q1P1QR/2n2NP1/2q4r b - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 c5 d4 cxd4 a4 e5 axb5 e4 Rh5 Bg7 Rh1 Be5 fxe5 Qb6 Ra3 Qf6 Ra1 Qd8 Kf2 Kf8 Kg3 Kg7 c4 f5 b4 a5 g6 d5 e3 h5 b6 d3 c5 a4 b5 d2 c6 d4 c7 d3 b7 a3 b6 a2 Kh3 f4+ Qg4 d1Q Na3 f3 Nc2 d2 Nb4 f2 Bc4 f1Q Ba3 Nd7 b8N Qfe1 b7 Nf8 N8c6 Ra5 b8N Ba6 c8B Qc1 Qg3 d1N Bb7 Ne7 Ba8 Qec3 Rb1 Kh6 g7 a1N g8Q Nc2 Q8g5+ Kh7 Kh4 Rc5 Nh3 Nb2 Nf2 Rb5 Rh3 Qd5 Ra1 Qg8 Ra2 Nc8 Ra1 Nd6 Rb1 Nb7 Ra1 Q1e1 Rd1 Na5 Rd8 Qc1 Re8 Bb7 N8a6 Bc8 Be2 Nbc4 Nc7 Ba6 Bf1 Nd2 Bc4 Nb1 Nbd5 Nb7 Bc5 Nba3 Be7 Na5 Bf6 Qd1 Q5g4 Qc1 Ndb4 Kh6 Rh1 Rh7 Bg5+ Kg6 Kh3 Rh6 Bf6+ Kh7 Qg5 Rg6 Bg7 Rd6 Rh2 h4 Kg4 Rd1 Bf6 Rh1 Rh3
Q1R1bK1b/pp2p3/1N3R1r/r2p1r2/1n3R2/2Q2qBP/R1PP4/BB1r2Nk b - - 0 1 illegal: No proof kernel
R3b1rb/1b2b1NN/q2P2pb/p2N2QQ/2n3p1/P3BNKB/1r3nP1/2R1R2k b - - 0 1 illegal: No proof kernel
8/1RQ2N1n/qPKBb2p/3Nr1P1/RbR3q1/1N1B1bk1/nb3PNp/1R2r3 b - - 0 1 illegal: Other
3Nr3/b1pk4/2p2n2/R1Pn2K1/bBBb3R/2RQBRBb/P1b2P2/2nN1q2 b - - 0 1 illegal: No proof kernel
n1n4B/PKb3R1/N1BB2p1/7p/B1k3Pq/nR1rR3/qRb2b1P/N3b1Qr b - - 0 1 legal: proof: c4 d5 cxd5 f5 b4 a5 e4 fxe4 bxa5 Ra7 Bb2 Ra6 Bc1 Ra8 Ke2 Kd7 Ke3 Kd6 Kd4 b5 f4 h5 a4 b4 g4 b3 f5 e6 a6 c6 f6 e3 a7 g6 a5 e2 a6 e1Q f7 b2 Na3 b1N Bb2 Qe2 Nf3 Bg7+ Ne5 Rh7 f8B+ Qe7 Ra2 Rh8 Nc2 Na3 Na1 Nd7 d3 Rb8 a8B Nb6 a7 Ba6 Bb7 Na8 Bg2 Bb5 Re1 Ba4 Be4 Qg2 Re3 Bc2 Qg1 Rc8 Bf3 c5+ Ke4 c4 Bc6 Kc5 d6 c3 d7 Bf6 d8R Bh4 Rd7 Bf2 Ba4 Rc7 Nc6 e5 Nb8 Kb4 Kd5 e4 Rd6 Qh4 Rd7+ Ne7+ Kd6 Rg8 d4 Kc4 d5 Rb7 Na6 Nc8+ Kc6 Rg7 Rd3 e3 d6 e2 Re3 e1B Be4 Rg8 Rg7 Rb4 Be7 Rd8 d7 Rb5 Bf3 Rd5 Be4 Rd3 Bd6 Rf8 d8R Rf7 Re8 Rb7 Bc1 Rb1 Rb2 Bd1 Rb3 c2 Re2 Bd2 Qe1 Bb6 Rge7 Bc7 Bb2 c1B Bh8 Bb4 Rf2 Be3 Rg7 Beb6 Kb7 B6c5 Rf5 Qa2 Bec6 Bg1 Rfe5 Bf2 Re2 Bc3 Reb2 Bc2 Qf1 Rc1 Qg2 Rh1 Re3 Bce1 Qg1
3Nbkn1/PQPq3b/3b1Rnb/1NQ5/1K3n1B/1P1NBr1B/2r1N3/2n3N1 b - - 0 1 legal: proof: d4 h5 e4 b5 c4 a5 g4 f5 gxh5 c5 exf5 a4 dxc5 a3 b3 Qb6 Nd2 Qd8 Rb1 Nc6 cxb5 Nb8 Rb2 axb2 a3 Ra7 a4 Ra8 f4 b1B h4 e5 h6 g5 c6 d5 c7 d4 h5 d3 h7 e4 f6 g4 f7+ Ke7 h6 g3 b6 g2 a5 e3 b7 e2 a6 Nd7 b8Q Bb7 f5 Bg7 f8N Bc3 f6+ Kf7 a7 Ba1 Ne4 Ba2 Kd2 e1N Qc2 Bd4 Ne6 Nf8 N6c5 Qd7 Ng3 Be3+ Kc3 d2 Nd3 d1N+ Kb4 Nb2 N3e2 Bb1 Qc5 Bc6 Qb7 Ng6 Rh3 Bc2 Rf3 Rf8 Bd2 Bf4 Be3 Bd6 Rf2 Ke8 f7+ Ke7 Rf6 Bb1 Nf3 g1B Bh3 Bh2 Nfg1 Ng2 Kc3 Bf4 Kb4 Re8 f8N Bc2 Ne6 Rf8 Nf2 Ke8 N6d4 Nd3+ Ka5 Rf7 Nb5 Nc1 Nd3 Kf8 Ka4 Bg5 Kb4 N2f4 Na3 N8e7 Nb5 Rg8 h8N Rg7 h7 Ng8 Bf2 Bh6 Bh4 Bb1 Rf5 Rf6 Nf7 Bc2 Nd8 Re7 Nec3 Re2 h8B Rh2 Nce2 Bb1 Nec3 Rc2 Nce2 Rb2 Nf7 Qe6 Nfe5 Be8 Qg2 Qd7 Nf2 Nh5 Qb7 N6e7 Nc6 Be4 Rf4 Bh7 Nd8 Rc2 Nd3 Ng6 Rf5 Rf7 Bd4 Rf6 Be3 Rf7 Re5 Rf3 Re6 Nhf4 Rf6+
2rq1Q1K/q2pn1p1/1n1P3b/1N1N1Q1R/NPN1B3/Q1b4b/R1r3P1/1N2n2k b - - 1 2 legal: proof: a4 b5 e4 c5 Qh5 c4 Qxh7 f5 exf5 c3 axb5 Nh6 b3 Ng8 Bb2 cxb2 Ke2 Kf7 Ke3 Kf6 Ke4 Kg5 c4 Kg4 d4 a5 f4 e5 h4 Kg3 c5 a4 h5 a3 b6 a2 b7 Bd6 d5 Nc6 b8N Ra6 f6 Qc7 Kf5 e4 Kg6 e3 f7 e2 f8Q e1B h6 Qb7 f5 Nb4 c6 Qa7 f6 Bc5 c7 Be3 Bd3 Bb6 f7 Qa8 Rh5 Kf2 Nc6 Qa7 Ne7 Bc3 Ne2 Bb7 c8N Be3+ Nd6 Rc6 Be4 Ba8 Nd4 Kg1 Nb5 Nd3 Nc8 Ne1 Nb6 Qc7 b4 Qd8 Na4 Rc7 Qe8 Bc1 f8Q Ne7+ Kf7 B1d2 Nc4 Rg8 Rg5 Kh1 d6 Bc6 Qg6 Bd5+ Qe6 Rh8 h7 Rc8 Rf5 Bh6 Re5 Rg8 h8N Rc6 Ng6 Rc5 Nbd2 b1N Nf4 Na3 Nb1 Rc8 Ncd2 Bb3 Nd5 Nc4 Qf5 Nb6 Nc4 Bd1 Ncd2 Bg4 Nc4 Ng6 Qee7 Bh3 Qh4 Ne7 Qg3 Nc6 Kg6 Ne7+ Kh7 Rc5 Q8f7 Rf8 Qg8 Rc8 Kh8 Rf6 Qf8 Rf7 Qe6 Rf2 Rh5 Rc2 Qf5 Be5 Qa3 Bf6 Nbd2 Bc3 Rc1 a1Q Nb1 Bcd2 Rd1 Qd4 Rc1 Bc3 Rd1 Qc5 Rd2 Qcc7 Re2 Qa7 Rf2 Rc1 Rb2 Rc2 Ra2
b1Kn4/Q2pb2N/Q1p2rNk/qp1bPnQ1/5Q1P/r4BR1/2P5/RR1n2Q1 b - - 0 1 illegal: No possible last move, all moves rejected
qkB1R3/1r1qPQ1R/N4Q2/N1K3Rp/1NP5/1r4nP/Qr2qQp1/1b1b4 b - - 0 1 legal: proof: d4 c5 dxc5 b5 e4 f5 a4 e5 axb5 Be7 g4 Bg5 f4 Nh6 Be3 Rf8 Bd4 exd4 e5 Bf6 Ra5 Rh8 Ra6 Nc6 Ra1 Ne7 e6 Be5 fxe5 f4 Qd3 Nef5 gxf5 Ng8 Qd2 Ne7 Qd1 Ng8 Ke2 a5 Kd3 g5 Kc4 g4 b4 d3 b6 a4 b7 f3 b8N d6 b5 f2 e7 a3 b6 g3 c6 d2 f6 a2 c7 d5+ Kc5 d4 c4 h6 b7 d3 Ne2 Bf5 c8R Ra7 Qb3 d1Q Nf4 d2 Na6 Kd7 b8Q Bh3 f7 Qe2 f8Q d1B Nd3 Qe4 Q8b6 Nf6 Nd2 Bhg4 Ndb4 Qa8 Bh3 f1Q Nc7 Nh5 Qf2 g2 Qbf6 Bf5 Qa3 Re8 Nb3 Qe2 Na5 Ng3 Rb1 a1R Qa2 Rb7 Rb3 Nf1 Rg3 Rb1 Rg5 Rb3 Rb8 Rf8 Bg4 Qe8 Rc8 Qf7 Re8 Ng3 Bh3 Qe6 Bg4 Bb1 Bf5 Qd8 Bh3 Q6g4 e6+ Kc8 Nc2 Rg8 Rf8 R7b4 e8Q Rb2 e7 R4b3 Qef7 Qe8 Nb4 Rg6 Q6f4 Rb6 Q4f6 Rb7 Rfg8 Qd8 Re8 Qge6 Rg4 Qa6 Rg5+ Kb8 Bc8 Qa8 Re1 Qg4 Re4 Qe6 h3 Qdd7 Reg4 Qe2 Rg7 h5 R4g5 Rd3 Rh7 Rdb3 Nca6+
1k1N1Q2/pPqnQn1p/4ppB1/QQ2R2P/8/B2b2R1/r3rPbK/2q1R2B b - - 0 2 legal: proof: d4 d5 a4 b5 axb5 Nd7 c4 Ndf6 cxd5 Nh6 e3 Nhg8 d6 Nd7 d5 Nb8 h4 g5 h5 Bh6 Nd2 Bg7 Ndf3 Be5 Nh4 Bd4 exd4 gxh4 g4 Kd7 b4 c5 b6 f6 b5 c4 g5 c3 b7 h3 g6 e6 b6 c2 g7 h2 Qe2 Qf8 Ra3 Qf7 Qb5+ Kd8 d7 Nh6 g8B Na6 b8R Qg6 Nh3 Nf7 Ng5 Nb4 Bg2 Nc6 Kf1 Nce5 Rg3 Nh6 Ba3 Qe4 Bf7 Neg4 Bg6 Qf5 b7 Kc7 Nf7 Rg8 Nd8 Nf7 Be4 c1Q+ Kg2 Rf8 Re1 h1B+ Kg1 Nge5 Kh2 Bf3 Rg5 Be2 Bh1 Qfc2 Rf5 Nd3 Re5 Nc5 Qa4 Bd3 d6+ Kb6 d5 Rg8 Bge4 Rg4 Bg6 Re4 Nc6 Nh6 Be8 Bb5 Qb3 Re2 d8Q+ Ka6 Qc7 Bd3 d7 Qc4 d8Q Bd7 Qb4 Ra2 d6 Q4c2 Na5 Bc6 Qdc8 Bd5 Nc6 Bg2 d7 Qc4 d8Q Re2 Qd4 Nd7 Qe7 Q4c2 Qb2 Qc5 Bg6 Nf7 Be4 Q5c3 Qg8 Qa5 Re8 Rc8 Nd8 Qb6 Qcc3 Rc4 Qcd2 Rc2 Qh8 Qc6 Rg8 Qc8 Qb1 Ra2 Rg3 Q8c2 Qbb4 Qc8 Qc4+ Kb6 Qb5+ Kc7 Qda5+ Kb8 Bg6 Q8c7 Qhf8
1rB1R3/KQ4R1/2rPNn1N/P2nRr1N/5Rb1/k1Pn1n2/R7/N1q3rq b - - 0 1 legal: proof: g4 d5 b4 c5 d4 h5 gxh5 a5 bxa5 e6 Bf4 f6 e3 Bd6 Bg3 Be5 dxc5 d4 Bf4 d3 Bg3 Bd4 Be5 fxe5 exd4 Kf7 Nc3 Kf8 Nb1 Ke8 Kd2 Kd7 Ke3 Kc6 h4 Kb5 a4+ Kb4 f4 g5 f5 b5 f6 g4 c3+ Kc4 a6 b4 a5 g3 h6 b3 c6 g2 h5 e4 a7 b2 h7 e5 h6 Ne7 c7 Qe8 f7 Qd7 f8N Nbc6 d5 Rb8 a8R Na7 d6 Qe6 Ra2 Qh3+ Qf3 Kb3 Na3 b1R Nc2 d2 Ba6 d1Q Ne6 Nb5 Ra7 Rf8 h8R Ng8 h7 Nf6 Ne2 g1R Ng3 Qhf1 Rh2 Qc1+ Rd2 Bd7 c8R Nc7 Nh5 Qg2 Rg8 Qh1 h8N Rf7 Rcf8 Ncd5+ Kf2 Rb2 Bc8 e3+ Ke2 Rb6 Kd3 e4+ Kd4 e2 Kc5 e1N Re2 e3 Re8 Ra6 Rg7 Rc6+ Kb5 Rf8 Nf7 Nd3 Nh6 Rf7 Rf2 e2 Qg2 e1N Rf4 Nf3 Ra8 Nb6 Ka6 Nbd5+ Ka7 Rf8 Nc7 Bg4 Re5 Ng8 Ne6 Rf5 Bd7 Ngf6 Re8 Rb1 Bc8 N5b4 Rb2+ Ka4 Na1 Ka3 Rc2 Nbd5 Rd2 Rb8 Rb2 Nd2 Qe4 Nf3 Rd2 Nc5 Qb1 Nd3 Qb7 Qd1 Rh2 Qc1 Ra2+
k1rNBnRK/1nb1rr1P/2B3bP/B1r2Nb1/2n3PR/4N3/RQn1P3/q7 b - - 0 1 illegal: No proof kernel
4k3/PrR2bq1/4r1n1/QN1r2Rn/NP1PPr2/1bR1BQ2/1b1Bb2K/3Bn3 b - - 0 1 illegal: No proof kernel
2Qq3B/7p/b1K1nb2/N1bN1N1Q/B2Q3P/k1nP2nr/Pq1RP1R1/4b2n b - - 0 1 legal: proof: f4 d5 g4 f5 c4 e5 Bh3 b5 Bf1 a5 fxe5 f4 b4 axb4 cxd5 Ra6 Na3 Rf6 Nb1 Rf5 gxf5 Be6 Kf2 Bd7 Ke1 Bc8 Kf2 Kd7 Kf3 g5 Ke4 c5 h4 f3 f6 c4 f7 g4 e6+ Kd6 d3 Kc5 d6 c3 e7 f2 e8N g3 d7 g2 Bg5 b3 Bf6 Kb4 Kd5 c2 Bb2 c1B Ng7 Nc6 Rh2 Bc5 f8Q Bg5 Qf6 Nd4 Nd2 Ne6 Ne8 Nh6 Qe7 Nf5 Nc4 Ba6 Kc6 Rg8 Rb1 Bf6 Ned6 Rg3 Qc1 Rh3 Qf7 Ng3 Na5 Nh1 Qh5 Ka4 Bd4 b2 Nf5 b4 Qc4 Ka3 Rd1 b1Q Rd2 b3 Qc2 Re3 Nh3 g1B Nf4 b2 Nd5 Rh3 Bg2 f1N Be4 Qa1 Rg2 b1N Qc4 Nfg3 Bf3 Qf8 d8Q Bf2 Qc8 Qd8 Be5 Be1 Qd4 Nc3 Bg4 Bfe7 Bh8 Bf6 Nfe7 Nc7 Bd7 Ne6 Nf5 Qb2 Be8 Bb5+ Kb7 Bc4+ Bb5 Be5 Kc6 Bf6 Ba4 Bb5+ Kb7 Ba6+ Kc6
b2Qr2n/1nPQbq2/P3B1N1/1p1P3N/kQR1pNn1/3P1p2/KB5r/6Rq b - - 0 1 illegal: No possible last move, all moves rejected
3K4/3p2RB/Q1pP1Nbp/4pR2/1PQ1Pr1k/b1bnN3/Q1Pr3N/b1n2B1q b - - 0 3 legal: proof: h4 b5 a4 g5 axb5 f6 hxg5 Kf7 b3 Ke8 Bb2 f5 e4 f4 Bd4 Ba6 Bc5 Bc8 Be3 fxe3 Ke2 Kf7 Kd3 Kg6 Kd4 a5 Kc5 h6 d4 e2 f4 e1B g4 a4 b6 a3 d5 e5+ d6 a2 b4 c6 b7 Bf2+ Qd4 Ra4 f5+ Kh7 f6 Kg6 f7 Be1 Nf3 Ne7 Qc4 Nd5 Rg1 Nf4 Nc3 Ne2 Nd1 Be7 f8Q Bc3 Ne3 Nc1 Nh2 Ra3 Qf4 Qf8 Kb6 Na6 b8Q Nc5 Kc7 N5d3 Qa7 Ba6 Qg3 Bb5 Qa6 Qf3 Rb1 a1B Qa2 Bf8 Kd8 Bc4 Qe1 Qh3 Qe2 Bf7 Rg3 Ra5 Rf3 Rd5 Rf5 Qg2 Rb3 Qh1 Ra3 Nc5 Qec4 Rd2 Rb3 N5d3 Rb1 Kg7 g6 Be8 g5 Be7+ Kc8 Rf8 Kc7 Kh8 g7+ Kh7 g8B+ Kg6 Bh7+ Kh5 g6+ Bg5 g7 Bg6 g8N Kh4 Nf6 Rf7 Ned5 Be3 Kd8 Bed4 Ne3 Bcb2 Kc7 Bdc3 Kd8 Ba3 Be2 Nb3 Rg1 Nbc1 Bf1 Bh5 Rg7 Bg6 Nh5 Rf6 Rg5 Rf3 Nf6 Rf4 Rf5
4k3/bb3np1/Rr1PR3/pq1b4/4q1Q1/PbRN1Pq1/P4RBN/1nB2KR1 b - - 0 1 illegal: No proof kernel
4r2N/BP2n1r1/2R3P1/1R4rQ/R3Pq1N/K3Pb2/1nrNnn1k/bN1r3B b - - 0 1 legal: proof: h4 d5 c4 b5 cxd5 g5 a4 gxh4 axb5 e5 f3 e4 fxe4 Be6 Ra4 Bd7 Ra1 Bc8 g4 Kd7 b4 Kd6 d4 c5 Kd2 f5 Kc2 h5 Kb3 a5 b6 a4+ Ka2 f4 b7 c4 g5 a3 b5 h3 b6 c3 g6 f3 Bb2 h4 Qd3 h2 Qd1 c2 Bc1 f2 Qd3 h3 Bd2 c1R Bg5 Na6 b8R Rh5 b7 Bg4 Qe3 Bg7 Rc8 Ne7 Qf3 Qf8 Be3 Qf4 Bg2 f1N Rc5 Re5 Rb5 Rc2+ Kb3 a2 Ka3 Re8 Bf2 Be6 Qh5 Ng3 Nf3 Rg5 Rc1 h1R Nh4 h2 Be3 Rf1 Bh1 Bg4 Bg1 Nc5 Bf2 Kd7 d6 Ke6 d7 Bf3 d5+ Ke5 d8N Na4 Ba7 Nb2 Ne6 Rd1 d6+ Rd5 Bg2 h1N d7 Nf2 Nc5 Rd6 d8N Rf6 Rb6 Rf7 Nb3 Bh8 Bh1 Rg7 Rf6 Qe3 Rc6 Kf4 Nf7 Qd2 Qh7 Kg4 Qh5+ Kh3 Rb6 Kh2 Rb5 Qf4 e3 Ne2 N3d2 Nbd1 Nh6 Rc7 Ka4 Rh7 Nc3 Bd4 Nf7 Rg7 Nh8 Rc6 Rab1 a1R+ Kb4 Rcc8 Rb3 Rb1 Ka3 Bf6 R3b4 Rc7 Na4 Ba1 Nc3 Nb2 Ra4 Rc4 Rc2 Rd1 Ncb1 Rc7 Rc6 Rcc8 Rca6 Rc2 Rc6
2Bq1NnN/1K1p4/rNP5/1P2P2N/r1nq1B2/PQ1b2Rb/bb3n1R/6Bk b - - 0 1 illegal: No proof kernel
1b4qB/1n4r1/R1p2Rr1/4P3/NP2b2R/nn1p1B1N/PKBP1r2/1B3krQ b - - 0 1 legal: proof: f4 a5 h4 g5 hxg5 e5 fxe5 a4 c3 b5 b3 b4 cxb4 axb3 e4 Ke7 g4 Ke6 g6 d5 g5 h5 g7 f5 g6 d4 Ba6 h4 Bd3 b2 Nc3 b1N Bb5 h3 Be2 h2 Ba3 d3 Bc1 c6 Nf3 f4 Qa4 Na3 Kd1 Nf6 Ng1 f3 Bb2 f2 Kc1 f1R+ Qd1 Nbd7 Nh3 Ra7 Bf3 Rh6 Na4 Nc5 g8B+ Rf7 g7 Rg6 Bd4 Rf2 Kb2 Nb7 Qg1 Bd6 Rf1 Bb8 Qg2 Ke7 e6 Kd6 e7 Nd7 e8R Ndc5 Rf8 Rc7 Bb3 Bf5 g8B Rcg7 Bc2 Nb3 Bb1 Qe8 Bd5 Qe6 Bc4 Qg8 Bb5 Ke6 Bf6 Kd6 e5+ Ke6 Rc8 Be4 Bc4+ Kf5 Bf7 Bc7 Ra8 Bd6 Ra6 Bb8 Ng1 Kf4 Be6 Rc7 Bh8 Rh7 Qh3 Rhg7 Qh6+ Kg3 Nh3 Rf7 Beg4 Rfg7 Bd1 Kg2 Bdc2 Re2 Rf6 Rf2 Rf1 h1R Bf3+ Kg3 Rf4 Rg1 Rh4 Kh2 Bg4 Kg2 Qh7 Re2 Rf6 Rf2 Bgd1 Kf1 Qh5 Na1 Qf3 Nb3 Qh1 Rf5 Bh5 Rf2 Bf3
1r1qRk2/R2p2Np/RQbN1r2/NB4nK/1b6/3P1PqP/1P1p2nn/2NnB3 b - - 0 1 illegal: No proof kernel
1kb2q1b/1B1pBQR1/p5r1/2p2Rn1/2bq2N1/4pn2/PPP1PR2/K2Q1RqN b - - 0 1 illegal: No proof kernel
b4Q1B/Qb2n1K1/n1B2r1B/N1p1p3/2k2Bp1/P3Pq1Q/N2bP2P/2q2r1R b - - 0 1 illegal: No proof kernel
1r1B2r1/1p1p1k1r/N2QBb1R/1q3Pn1/1P1P1p1R/2K4Q/1P4p1/1R2RbBn b - - 0 2 illegal: No possible last move, all moves rejected
1nn2b2/P1brBPPR/5K2/B1q2Prp/3NB3/kNr3P1/r1R1r3/Q6N b - - 0 1 legal: proof: c4 a5 e4 g5 h4 f5 hxg5 d5 exf5 c5 b3 Bd7 b4 axb4 d3 Bb5 cxd5 c4 Qa4 c3 Qd1 Bc4 dxc4 Ra5 Be2 Ra6 Bf1 Ra8 Ke2 Kd7 Kf3 Kd6 Ke4 Kc5 Ke5 b5 f4 c2 a4 e6 g6 h6 d6 b3 g3 Kb4 g7 b2 d7 Qg5 d8B Qh5 c5 Qg5 a5 Ne7 c6 Nc8 Nd2 b1R a6 Rb3 c7 Rc3 Bg2 Qh5 Kf6 e5 Ne2 e4 Nd4 e3 N2b3 e2 Bd5 e1R Be4 Re2 Bd2 c1B Ra2 Rh7 Rb2 Ka3 Be7+ b4 Rc2 Ra7 Qf1 Rb7 a7 Bb2 Nc5 b3 Qg1 Ba1 Qf1 b2 Ncb3+ Rb4 Rh2 b1R Rh3 Rd1 Rh1 Nd6 c8N Rb7 Be1 Rd7 Qg1 Rc1 Qf1 Rc5 Ba5 Bc3 Rh4 Ra1 Qg1 Ra2 Qa1 Bb4 Rh1 Rc3 Rh2 Nc4 Nd6 Nb6 Bf3 Nc8 Ne4 Bd6 Nf2 Rh8 Be4 Rh7 Nh1 Rh8 Ke6 Rh7 f6 Qc5 f5 Bc7 f7 Rh8 Rh5 Rh7 Rg5 h5 Kf6 Rh6+ Rg6 Nc6 Kg5 Nb8 Rc6 Re6 Ra6 Re5 Rf6 Re6 Rh6 Rb6 Rh7 Re6 Bc6 R6e4 Bb7 Rg4+ Kf6 Rg5 Be4
3bR3/1Q1Bp1BP/P1R1bnR1/NpPrpkrn/1P5N/3qP2n/3B1p2/2K1n3 b - - 0 1 illegal: No proof kernel
2NNB1r1/2rb1pR1/2P1rPp1/1RK1k1P1/1BnnQb2/rP2B1P1/6r1/1q2nB2 b - - 0 1 illegal: No proof kernel
7K/2bnr1B1/1q3P1P/N1q3np/1pQ1rnBP/1PR1Pb1B/7Q/qk2N1Q1 b - - 0 2 illegal: No proof kernel
3n4/1QP1Q2P/6bp/2NKnNrp/BpP2b1P/3pN2Q/4qk1P/1bB1r2R b - - 0 1 illegal: Other
1qb2R2/B4N2/PR2b2B/Pb6/1B1pp1BK/1P5n/P1nNPrq1/k1N1b1r1 b - - 0 1 illegal: Other
bqr2b1B/2ppB1N1/2pR2k1/3NBRn1/3R4/Q1K2Q1q/B1n3QB/1Q2Q3 b - - 0 1 illegal: Other
Q1RR4/b7/bnN3kq/3R1n2/N7/Kp2r1bQ/NBBn3q/1rQBR1RB b - - 0 1 legal: proof: e4 a5 b4 f5 exf5 h5 bxa5 d5 g4 d4 gxh5 d3 cxd3 Qd5 d4 Qd6 d5 Qd8 d4 Kf7 Kd2 b5 Kc2 e5 Kb2 c5 h4 g5 f4 c4 a4 g4 d6 g3 d7 b4 h6 e4 h7 e3 d5 b3 h5 g2 f6 e2 f5 e1N d6 c3+ Ka3 c2 a6 Qb6 d8R Qa7 h6 Qd4 a5 Ne7 d7 Rg8 h8Q Qd3 a7 Qe2 a6 Bg7 h7 Nd5 Nc3 Qb5 Nge2 g1B Bb2 c1Q Na2 Qb7 Nec3 Qc6 Bd3 Bf2 Bc2 Bb7 Rg1 Qh6 Qc1 Qh2 Na4 Qh5 Rc8 Nf3 d8N+ Kf8 f7 Ke7 f8R Ne3 Re1 Nd7 f6+ Kd6 f7 Ke7 Rg1 Qch6 Nc6+ Ke6 Rb1 Qh2 Rfd8 Nd2 f8R Nb6 Rf5 Bd4 Rfd5 Kf7 Ra1 Rb8 a8B Bg3 a7 Ba6 Bb7 Rf8 a8B Nf5 Re1 Bdf2 Qc3 Kg6 h8Q Rf7 Qd3 Re7 Qf1 Re3 Qh3 Bf1 Ba6 Bg1 B8b7 Ra8 Be2 Ra5 Bed1 Ba6 Qe5 Rc5 Qb8 Rc4 Qa7 Rf4 Qa8 Rf1 Rb1 Bb8 Re8 Ba7 Rf8 Bf2 Rfd8 Bg3 Bg4 Rff3 Rg1 Rf1 Qe1 Nf3 Rb5 Qh4 Nb8 Ne5 Bh1 Qh5 Nc6 Nf3 Rbd5 Qh6 Qd2 Rfe1 Ra1 R1e2 Raf1 Re1 Qd1 Nd2 Qb1 Rd1 Re1 Rc1 Bgd1 Be2 Ba1 Ba6 Qb2 Rb1 Qc1 Nd7 Bc3 Nb6 Bb2
Br6/Qk2bBN1/3B2N1/3n1qN1/1r1BB1r1/KQ1N4/5nn1/bbQRrRB1 b - - 0 1 illegal: No possible last move
Nb2q1bk/3nnrN1/BQ1QnR1B/2R1Q3/1R3n2/R1p2K1Q/N1N1r3/2n2B2 b - - 0 1 legal: proof: e4 b5 h4 d5 a4 g5 axb5 f5 exf5 d4 hxg5 d3 cxd3 Nf6 d4 Ng8 d5 Qd6 Ra5 Qd7 Ra1 Qd8 Ke2 Kf7 g4 Kg7 b4 h5 f4 c5 d4 a5 d6 e5 d5 h4 g6 a4 f6+ Kh6 d7 h3 g5+ Kh5 g7 Kg6 f5+ Kh7 b6 c4 b5 c3 b7 h2 b6 e4 d6 a3 f7 a2 f6 e3 g6+ Kh6 Kf3 Qe8 d8N Be7 f8R Na6 b8R Qb5 d7 Ra7 b7 Nc7 f7 Ra6 Na3 Qa5 Qd6 Bf6 Ne6 Rh7 d8Q Be5 Ne2 Qa4 Nc2 Ne7 g8B Qe8 Ng7 Ne6 Q8b6 Bd7 Rg1 h1N Rg5 Ng3 Rf5 Bf4 Rc5 Nh5 Bd2 Ra8 Nc1 e2 Qb5 Rh8 Rc7 Ra7 Qdc6 Nd8 Nf5+ Kg5 g7 Be6 Qcd5 Nf6 Rc5 Kg6 Bh7+ Kg5 g8Q+ Ng6 Qa6 Kh5 Qg7 Bc7 Qdd6 Rg8 Qh8 e1N+ Kg3 Nd3 Kf3 Rg7 Qe5 Bc4 Qad6 Bb3 Bg5 Ndf4 Ba6 Ne7 Bg8+ Kg6 Qh3 Nec6 Bh6 Be6 Nfe3 Bb3 Nd5 Bc4 Nb6 Be6 Rb1 a1N Na2 Nb3 Na8 Bc4 Rb2 Nc1 Rb3 Be6 Bf1 Ra4 Ra3 Ne7 Rb5 Bc4 Rc8 Bb3 b8Q Re4 Rb4 Re2 Qbb6 Bb8 Rc5 Be6 Qe3 Nd7 Bh7+ Kf6 Bd3 Rh7 Ba6 Rg7 Qed4+ Kg6 Q4e5 Kh7 Qb5 Rg5 Qbb6 Rf5 Rg8 Rf6 Rg6 Kh8 f8N Bf7 Ne6 Bg8 Ng7 Rf7 Rf6 Nde6 Qa5 Ned5 Qd8 Ne7 Q8b6
1B1RQ2b/N1nQK1Q1/r7/1P2N3/ppR3B1/1Nqrp2B/Rb6/RR2q1k1 b - - 0 1 legal: proof: e4 b5 g4 d5 c4 h5 cxd5 f5 exf5 Nc6 gxh5 Nb8 a3 Bb7 a4 Bc8 b3 c5 Ra3 c4 Be2 b4 Ra1 c3 Na3 Nd7 Bf1 Ba6 Nb1 Bb5 axb5 Ne5 Nh3 Rh7 Ng1 Nc4 bxc4 Rh8 Ke2 Kf7 Ke3 Kf6 Kd4 Kg5 Ke5 Kh4 Ke6 g5 d4 a5 f4 a4 h6 g4 d6 g3 h7 c2 c5 g2 d7 Qc8 c6 Qe8 d8N Rb8 f6 Ra8 d5 Bg7 c7 Rc8 f5 Bf8 f7 Rb8 c8B Rb7 f6 Qc6+ d6 Qe8 d7 Nh6 Nf3+ Kh3 Nbd2 Bg7 f8Q Ra7 f7 Bc3 Nb3 Ra5 Bf4 c1B Bb8 B1d2 Nc6 Rg8 h8Q Qd8 Na7 Bc1 Qe8 Qc7 f8R Rg3 d8R Ra6+ Qd6 Bd4 Rf4 Qc3 Bd7 Be5 Rc4 Bg7 Be2 g1Q Qhg8 Kg2 h4 Rh3 h5 Ng4 h6 Ne3 h7 Nd5 h8R Nc7+ Kf7 e5 Ke7 e4 Ne5 Rd3 R8h2+ Kg3 Bf3 e3 Rha2 Bb2 Bh3 Kf2 Qdd7 Bh8 Qg7 Qd1 Bh5 Qdd2 Rhb1 Qe1 B5g4 Kg1 Qd4 Rd2 Qd5 Rd3 Qdd7
1nr1k1N1/2Rq4/2B2Q1N/2KQ2PR/2R3rb/1R1r3b/Rrq1QB2/1nR1q1B1 b - - 0 1 legal: proof: e4 b5 h4 d5 a4 g5 axb5 f5 exf5 d4 hxg5 d3 cxd3 Nf6 d4 Ng8 d5 Qd6 Ra5 Qd7 Ra1 Qd8 Ke2 c5 Ke3 a5 d4 e5 f4 h5 g4 c4 b4 e4 f6 c3 g6 c2 b6 a4 f5 h4 b7 a3 g7 h3 f7+ Ke7 g5 h2 d6+ Kd7 b5 a2 d5 Be7 Kd4 e3 f8B e2 f6 e1Q f7 Nf6 g8R Rh5 b6 Ra7 Nf3 Rh6 Nc3 Ra3 Nh4 Ne4 Rg7 Qc7 Be3 c1Q Bg2 Nd2 Qe2 Qg3 Nf5 Qb1 Bf2 Bd8 Rc1 h1R Ne4 Nc6+ Kc5 Qbb3 b8R Qgd3 b7 R6h5 Nh6 Be7 Nf6+ Kd8 Nfg8 Qdb1 Rh7 Bf6 d7 R1h4 Rc4 Qbg3 Ra8 Be5 b8R Qc2 Rb3 Rg4 Rc1 a1R Bg7 Bf4 Bgd4 Nb1 Bh1 Qe3 f8Q+ Qe8 Re7 R1a2 Qf6 Bg3 Bg1 Rb2 Bdf2 Rh3 Ra7 Ra1 Ra2 Bh4 Be4 Rd3 Bg2 Qe5 Rh7+ Kc7 d8R+ Qd7 Re8 Qe6 Ree7 Kd8 d6 Nb8 Ref7+ Ke8 Be4 Qa4 Rc7 Qad7 Bc6 Bb7 Bb5 Bg2 Bc6 Qe7 Nf5 Bf1 Rh5 Bh3 Nfh6 Qe4 Raa7 Ra6 Ra8 Rb6 Ra5 Ra6 Ra2 Ra8 Bd5 Qd8 Qd2 Qe1 Qe2+ Qe7 Bh1 Nc6 Bg2 Rc8 Be4 Qf7 d7+ Kf8 Bg2 Nb8 Be4 Bg3 Bc6 Bh4 Qg6 Qe6 d8Q+ Qe8 Qd5 Qe6 Qd1 Qd7 Qf6+ Ke8 Qe2+
kn1B2N1/2r1B2R/Q1r3q1/2qBP1n1/QQb1B3/2KN2Rr/5QBb/2Q1r2r b - - 0 1 illegal: No possible last move, all moves rejected
q1R1N2B/2Qq2q1/4rRN1/NNB4K/2n1R1P1/1R1nb3/Bq1QN1q1/1r5k b - - 0 1 legal: proof: e4 d5 f4 b5 c4 f5 cxd5 b4 exf5 b3 axb3 Bb7 b4 Ba6 b5 Bc8 g4 g5 fxg5 Nh6 h4 Bd7 b6 Be6 h5 Bf7 Qb3 Bg6 hxg6 Ng8 Qc2 Nh6 Qd1 Ng8 Kf2 Kd7 Kg3 Kd6 Kh4 Ke5 b4 Ke4 d4 e5 b5 a5 b7 c5 f6 h5 b6 c4 d6 c3 f7 c2 d5 a4 g7 a3 d7 a2 d6 Rh7 Be3 c1Q Bc4 Qe8 d8N Ra6 d7 Bc5 f8N Nc6 b8R Nh6 g8R Qb2 g6 Na5 b7 Re6 g7 Nf7 Ne2 Kf3 Qd2 Kg2 Nc6 e4 d8B Ne5 Re1 Qd7 Ng6 Nd3 Nbc3 Bd4 Rac1 a1Q Ba2 Nc4 Nb5 Bb6 Bg1 e3 Bf6 Kh1 Na5 Ba7 Kg5 h4 Rgc8 h3 g8N h2 Bh8 Qbg7 Rb1 Qab2 Nf6 Rh3 Ra1 Rg3 Bf2+ Rg1 Ne8 Bd4 Kh5 Rf1 Nef4 e2 Be3 Bb6 Bc5 Rg1 Rf1 e1Q Ne2 Qf2 Rae1 Qg2 Rf6 Ba7 Nec3 Rf1 Re4 Rb1 Ne2 Bb6 Ra8 Ba7 b8Q Bb6 Qc7 Ba7 Bg1 Be3 Rab8 Bg5 Qa7 Bf4 Bc5 Be3 Ref4 Qa8 Nbc7 Kg2 Rb3 h1Q+ Kg5 Qde7 Nb5 Qd7 Qc7 Qg1 Kh5 Kh1 Rd4 Qgg2 Re4
2q1n1RK/3N3R/1P1qNR1q/2QBnB2/2b3r1/1rQ2QB1/kQ2q2r/3R2bQ b - - 0 1 legal: proof: e4 b5 h4 d5 a4 g5 axb5 f5 exf5 d4 hxg5 d3 cxd3 Nf6 d4 Ng8 d5 Qd6 Ra5 Qd7 Ra1 Qd8 Ke2 Kd7 Ke3 Kd6 Kf4 Kc5 Ke5 Kb4 g4 a5 d4 c5 f4 h5 d6 a4 d7 e6 d5 h4 f6 a3 f7 h3 g6 c4 g5 a2 f5 h2 b6 c3 d6 c2 g7 Kb3 b7 Rh7 f6 Rh3 g6 Ra6 Nc3 Rh7 Bd3 Qe8 d8Q Rc6 d7 Be7 f8Q Rc5+ Nd5 Rh5+ Bf5 Ra5 f7 Bb4 Nh3 Ne7 Kf6 e5 g8R e4 Kg7 e3 Nb6 e2 Nf4 e1R Ne6 Ba3 Qf3+ Re3 Qc7 Nbc6 d8Q Ra6 b8Q Ne5 Qdd1 Nd5 Qfc5 Ra4 f8R Nf6 Qbb7 Rg4 Nd7+ Bb4 Rb1 a1Q Qbc6 Rc3 Bf4 Ka2 Qc1 Ba6 Bg3 Bc4 b3 Ba5 b4 Bb6 b5 Rb3 Rd1 h1Q Q6b7 Nd5 Rf6 Rh2 Qc7c6 Qb8 Qc3 Nc7 Q6f3 Qf1 Qh1 Qc8 Qbf3 Rf2 Kh8 Ne8 g7 Qe2 Qce1 Qd4 Qec3 Bc7 b6 Qd6 Rgf8 Bb8 g8B Bc7 R8f7 Rh2+ Rh7 Bb8 Ng7 Bc7 Bd5 Bb8 Ne6 Bc7 Qh6 c1Q Rg1 Qg5 Rbd1 Qh4 Qhc1 Qh6 Rf7 Bd8 Rf8 Bg5 Rf6 Be3 Bf4 Rgh4 Rg8 Rg4 Bg3 Bg1 Q1b2+
N3k3/1bQP2R1/3R2b1/3pNr2/2nr2n1/Q2Bb2N/nQKb1BR1/R3QQq1 b - - 0 1 illegal: No possible last move, all moves rejected
1kB2B2/1p1pB1nN/N2Qbp2/N1N1p1rQ/1PRpB1n1/8/1N1KQ2R/2r3q1 b - - 0 1 illegal: Other
k1nN4/2B1N3/NRR1N2n/P1KN2N1/4b2p/7B/Qq1n2qR/bN2brR1 b - - 0 1 legal: proof: e4 a5 b4 f5 exf5 g5 bxa5 d5 f4 d4 fxg5 d3 cxd3 Qd7 d4 Qd6 d5 Qd8 h4 b5 g4 Nf6 h5 Ba6 h6 Bc8 g6 Ng8 g5 Ra6 Bc4 Rf6 Bd3 Rf7 Bf1 Rg7 hxg7 Qd6 Bc4 Qd7 Bf1 Qd8 Kf2 Kd7 Ke3 h5 Kd4 e6 a4 b4 f6 c6 a6 Kc7 d6+ Kb6 a7 Kb7 a8N e5+ Kc5 e4 d4 h4 a5 b3 f7 b2 d5 e3 Nf3 e2 Bf4 e1B Qc2 Nh6 g8N Bh3 g7 Bg4 g6 Bh5 Bh3 Nf5 Ng5 Be2 Nc7 Qe8 Nf6 Bd3 g8R Qe2 g7 Be4 Na6 Ka8 Rh2 Nh6 Bg3 Be7 f8R Qg2 Rc8 Bd8 Re8 Rf8 g8N Bc7 d7 Be5 d8N Rf7 Nd7 Rf1 d6 B5c3 Ndf6 Be5 Kc4 c5 Rc6 Nd7 Ne7 Nb6+ Kb5 c4 d7 c3 Nde6+ Nc8 d8N Bd4 Nfd5 Bh8 Qa4 c2 Qa2 c1Q Bc7 Qcd2 Kc5 Bc3 Na3 b1N Rf8 Bg7 Rf6 Qb2 Rg6 Nd2 Rb1 Qa1 Rbb6 Qb2 Nb1 Qb3 Ngf7 Ba1 Rg4 Qb2 Nfg5 Qf3 Rg1 Qg3 Nbc3 Qg2 Nb1
2Nn4/1BBrq3/1N1p1p2/K3Rq1P/Q2BP1kr/b1Q2bR1/3Rb3/2RNR3 b - - 0 1 legal: proof: d4 b5 h4 g5 hxg5 h5 f4 c5 dxc5 e5 fxe5 Nc6 a4 Nd4 axb5 Nf5 g4 h4 Ra5 Ng3 Ra1 Nh5 gxh5 Be7 Bh3 Bd6 Bf1 Bf8 Kd2 Ke7 Kc3 Ke6 Kb4 Kf5 e4+ Ke6 c4 d6 c6 h3 c7 f6 c5 h2 c6 a6 b6 Qe8 b7 Qg6 b8B Qh7 g6 Qd7 g7 Qe8 Ne2 Be7 Nbc3 Bd8 Na4 Be7 Nb6 Ra7 Nc3 Ra8 Qa4 Bd7 c8R Rh7 c7 Nh6 g8R Bb5 Be3 Bf8 Rg2 Nf7 Nd1 Qe7 Ka5 Bh6 b4 Nd8 Bd4 Be2 b5 Bc1 Ra3 Rg7 Rh3 Ba3 Rhg1 h1B Rgh2 Bc4 Rd2 Ra7 Bd3 Rg8 Re1 Rg4 Bf1 Rh4 Bd3 Kf7 e6+ Kg7 Bf1 Kh6 Be2 Qd7 e7 Kg5 e8R Bf3 Re5+ Kg4 Bd3 Qf5 Bf1 Bg8 Bc4 Be6 Bd5 Bf7 Bb7 Bc4 Rc5 Bce2 Rc1 Ne6 Re8 Nd8 c8N Bh1 Re5 Bhf3 Bd5 Rd7 Bc7 Qe6 Qb3 Qf7 Bb7 Qe7 Ka4 a5 Qc3 Bg2 Nc4 Bh1 b6 Bhf3 Kb5 a4 Ka5 Qh7 Bc6 Qe7 b7 Bb2 b8Q a3 Qa7 a2 Bb7 Ba3 N4b6 a1Q Qa8 Qa2 Qa6 Qd5+ Qb5 Qde6 Qa4 Qf5 Rg3+
1kB5/1R2b2P/1Kp1Q1qR/1QPqB3/4bBn1/Np3bp1/1R5Q/R2nNR2 b - - 0 1 legal: proof: e4 a5 b4 h5 bxa5 f5 exf5 e5 d4 h4 dxe5 Rh6 g4 Rh8 h3 b5 Bd2 g5 Be3 Rh5 gxh5 g4 Bg5 g3 Bc1 Ra6 Qf3 Rg6 Qd1 Rg4 hxg4 Bh6 Nf3 Bg7 Ng1 Bf8 Ke2 d5 Kd3 Kd7 Kd4 h3 f4 h2 c4 b4 a4 b3 f6 Bg7 Kc5 d4 g5 d3 f7 d2 f8B Bb7 h6 Kc8 a6 Qd3 f5 Bg2 a7 Bb7 a8R Bg2 g6 Qe2 e6 Bd5 h7 Bg2 e7 Qe1 e8Q+ Kb7 a5 Nf6 Qb5+ Kc8 a6 c6 a7 Nh5 f6 Qe8 f7 Bf3 Bd6 Qe6 f8R+ Qe8 Kb6 Bg4 c5 Bd7 Be5 Be6 Bh3 Bg4 Nf3 Nf6 Qg1 d1B Ne1 Bc2 Bcf4 Ne4 Na3 Bf6 g7 Nf2 g8Q Nd1 Qgc4 Be7 Qe6+ Kd8 Ra2 Be4 Rb2 Bgf3 Rf6 Qf7 Rh6 Qe8 Qf2 Qg6 Rf1 h1Q Qh2 Qg2 Qf7 Qd2 Bc8 Qd5 Qe6 Nd7+ Kb7 Nf6 Kb6 Ne3 Rb8 Nfg4 a8R Nd1 Rb7 Nf6 Rc7 Ng4 Ra4 Bh1 Rd7+ Ke8 Nac2 Bhf3 Rda7 Kd8 Ra1 Bd6 Na3 Be7 Ba6 Qd7 Rb7 Kc8 Rc7+ Kb8 Bc8 Qd5 Rb7+
B1b4r/4p1q1/Q3qp1B/KQkN4/pR1nP1Pr/R3N1R1/4n1B1/NR3Rb1 b - - 0 1 legal: proof: h4 d5 a4 b5 axb5 g5 g4 d4 f4 d3 h5 Qd7 fxg5 Qd6 cxd3 Bf5 d4 Qf6 d5 Qg6 hxg6 Bc8 b4 Kd7 d4 Kd6 Kd2 c5 Kc3 a5 e4 h5 b6 f6 b5 h4 b7 h3 b6 a4 g7 c4 Kb4 h2 g6 c3 Qe2 c2 Qa6 Rh4 Ne2 Rh3 Nec3 Rh4 Nd2 Bd7 Nb3 Rh3 Rb1 Rg3 Na1 Rg1 Bg2 Ra7 Ka5 Rf1 Bh6 Re1 Rf1 Bf5 Rb4 Nd7 b8R c1Q b7+ Nb6 Rb1 Kc7 d6+ Kc6 d7 h1Q d8R Qh3 d5+ Kc5 d6 Ra8 d7 Qg5 Nd5 Qg3 Rb4 Qd6 Rdc8+ Qc6 d8R Re3 Rc7 Bc8 Rcd7 Rg3 Rbb1 Qe6 Rc7+ Kd4 Rc3 Rh3 Rg3 Rh4 Rd6 Kc5 Ra3 Nd7 Rdb6 Ne5 R6b3 Nf3 Rb4 Bd7 Rd8 Ng1 b8Q Ne2 Qe5 Qf7 Rdb8 Bc8 R4b3 Qd2+ R8b4 Qa2 Rg3 Qc4 Bg5 Nh6 g8N Qe6 g7 Nf5 Nh6 Nfd4 g8B Qa2 Nf5 Bh6 Bd2 Be3 Qb8 Bg1 Bh6 Qf7 Nfe3 Qg7 Be6 Qb3 Bd7 Qa2 Bc6 Qb3 Nc7 Qe6 Ncd5 Bb7 Qe5 Rh8 Qf5 Bc8 Ba8 Qe5 Qd7 Qe6 Qdb5+
Nnb1NK1k/N1q1B2R/n1B1Qbp1/3B2Pp/N2Rp3/1p3Nr1/1P3RqQ/5r2 b - - 0 1 illegal: No proof kernel
5r2/1NRbn2r/1B1N2Nb/2K3Rr/QpPR2n1/n2QQk1B/2N2Pb1/2q4B b - - 0 1 illegal: No possible last move, all moves rejected
2q1Bq2/k2bBRN1/QNP4n/1RrNb1n1/1bN2QPQ/3p4/6Kb/1R2r2B b - - 0 1 illegal: No possible last move, all moves rejected
n1R2b2/2P1Bq1b/2qNnRnP/R2rBr2/2b2p2/3B4/N2k2N1/N1N1QK1R b - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 e5 fxe5 c5 a4 c4 axb5 c3 dxc3 Qg5 c4 Qf6 c5 Qd8 e4 Ke7 b4 Ke6 h4 f5 c4 g5 h6 d5 b6 a5 b5 d4 c6 f4 h7 a4 h5 d3 c5 g4 h6 a3 b7 g3 c7 g2 c6 a2 b6 Bg7 Nc3 Ra5 Ba3 Rb5 Be7 Rb1 Nge2 g1N Nc1 Na6 b8B Qd6 b7 Bd7 c8R d2+ Kf2 Rb6 Qe1 d1B Bd3 Bc2 Kf1 Rb5 Bc7 Qc5 b8N Nh3 Bcd6 Nc7 Na6 Ng5 Nb4 Na8 c7 Bb1 Nc2 Qc6 Rf8 Rd5 Rc8 Kf7 e6+ Kg6 Rf8 Bc8 Be5 Ba6 Rf5 Bc4 Rf8 Nf6 Rc8 Rf8 h8N+ Kh7 Ng6 Ng8 Nh4 Rf5 Ng2 Kg6 Bd8 Bf8 e7 Ne6 e8N Ne7 Nd6 Ng8 Bg5 Ne7 Bh4 Kh5 Bg5+ Kg4 Bgf6 Ng6 Be7 Bg7 Rf8 Kf3 Rf6 Rg5 Bd4 Rgf5 e5 Ng5 e6 Bf8 Nb4 Bc2 Be5 Bb1 Bd8 Bc2 e7 Ne6 e8R Bb1 Be7 Bc2 Rb1 a1Q Rc8 Qa2 Ra1 Qb3 Ra5 Bb1 N3a2 Bc2 Qh4 Bb1 Ne1+ Ke3 Nbc2+ Kd2 Na1 Qd7 Kg1 Qb7 Ng2 Qbc6 Kf2 Qe8 Kg1 Qf7 Kf1 Nh8 Ne2 Rg5 Nec1 Bc2 Be2 Bh7 Bd3 Ng6 Qg3 Rf5 Qe1#
bK1n3b/B5Nq/p2Q1N2/N2q1k2/1PPp1q2/3n2BR/r2N3r/RNRR1B2 b - - 0 1 legal: proof: e4 b5 g4 c5 d4 h5 gxh5 f5 dxc5 b4 exf5 b3 axb3 Rh7 b4 Rh6 b5 Rh8 Ke2 Kf7 Kd3 Kf6 Ke4 g5 Kd5 e5 h4 e4 b4 g4 f4 d6 c6 g3 h6 a6 h5 e3 b6 e2 c7 e1Q b7 g2 h7 Nh6 Be3 Qd2+ Bd3 Qc1 Nf3 g1Q Ba7 Rg8 h8B+ Kf7 f6 Bd7 c8R Qf2 f5 Ng4 h6 Be8 h7 Nc6 b8N Na5 Nc6 Nb7 Na5 Qfe3 c4 Qde7 Rd8 Qh6 Bg7 Qcf4 h8R Qd2 Re1 Qc1 Bf1 Qhg5 Rd7 Qgd2+ Kc6 d5 Kc7 Ne5 Rh4 Rd8 Rh3 Qd4 Bh6 Rg2 Bf4 Ra2 Bg3 Qcf4 Qd2 Bh6 Rc1 Bg7 Qd3 Bh8 Qd1 Kg8 f7+ Kg7 f8N Kf6 Ne6 Qh7 Ng7 Bf7 Qd2 Re8 Qd3 Nd8 Kb8 Re6 Qd2 Be8 Rd6 Bc6 Rd7 Ba8 Rd6 Kf7 f6 Kg6 f7 Kf6 f8N Qdd3 Nh5+ Kf5 Nf6 Re8 Ne6 Rg8 Bh4 Rg2 Bg3 Qde4 Qd4 Rh2 Ng7+ Kg6 Re6 Nd3+ Re5 Qef5 Nfd2 Qe6 Qc5 d4 Qd6 Qd5 Ree1 Kg5 Red1 Kg6 Nge8 Kf5 Ng7+
N5Rr/1kBKR3/r1n4q/3P1p2/4r1BP/1rB5/1pbNNnRQ/1N2bR1R b - - 0 1 legal: proof: f4 a5 g4 h5 gxh5 e5 fxe5 d5 b4 d4 bxa5 d3 cxd3 Nf6 d4 Ng8 d5 Rh6 Na3 Rh7 Nb1 Rh8 Kf2 Kd7 Ke3 g5 Ke4 c5 Kf5 Kc7+ e6 b5 d4 f6 a4 g4 e4 b4 h4 g3 h6 c4 h7 c3 a6 c2 e5 b3 a7 g2 d6+ Kb6 d7 b2 d5 Bb4 e7 Ba6 Ke6 f5 e8N Bc5 a5+ Kb7 Bf4 c1R Qd2 Bf2 Be2 Rc5 Bg4 Ne7 Nf6 Be1 Ne2 g1R Ne4 Qe8 d8R Rf8 h8B Bd3 a6+ Kb6 Kd6 Ng6 e6 Bc2 e7 Rb5 Bc3 Qf7 e8R Qh7 Re7 Rh8 Rg8 Nc6 Kd7 Rb3 Bd6 Re8 a8R Nf4 a7 Nh3 Bc7+ Kb7 Rd8 Qg6 a8N Qh6 Qf4 Rg3 Ned2 Nf2 Rf1 Re3 Qh2 Rf8 Rgg7 Rf6 Rdg8 Rfe6 Bh5 R6e4 Rg2 Ra4 Bg4 Ra6 Ra4 Re6 Rf4 Re4 Rh1 Nd3 Rff1 Nf2 Rc8 Nb4 Rf8 Nc6 Rg8
r1b5/1NbQ1R1N/1Q5q/nnP1P1RB/kbQq2Nq/2Qb2B1/K1QN4/4r3 b - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 e5 fxe5 c5 a4 c4 axb5 c3 dxc3 Qg5 c4 Qf6 c5 Qd8 Kd2 g5 Kc3 d5 Kb3 Kd7 c4 a5 h4 f5 e4 a4+ Ka2 f4 b4 f3 h6 f2 h7 g4 c6+ Kc7 e6 Kb6 h5 d4 e7 d3 e8Q g3 c5+ Kc7 h6 d2 Rh5 g2 Nf3 g1Q Ng5 a3 Qc2 d1B Nd2 Bf3 Be2 Na6 b6+ Kb8 c7+ Kb7 b5 f1Q Qd7 Ne7 e5 Rg8 h8Q Bg7 h7 Rf8 Qg8 Qd4 h8N Qd1 Nh7 Qh1 Nf7 Be4 Rg5 Bd3 Bh5 Bf6 Nh6 Nc6 Ng4 Na5 Qgc4 Be7 Rb1 Rf1 Rb3 Re1 Rc3 Bf5 Rf3 Bd3 Rf7 Bd6 Q4c3 Qf8 Qc4 Qh6 Q2c3 Rb8 Qc2 Qh4 Q2c3 Ka8 b7+ Ka7 Qc2 Ra8 b8N Bb7 c8Q Nc7 Q4c3 Ba6 Qg8 Bc8 b6+ Kb7 Nc6 Ka6 b7 Nb5 b8Q Bc7 Ka1 a2 Nd8 Qb6 Nb7 Qh6 Kb2 a1B+ Ka2 Bb2 Nb3 Ba3 Bf4 Bb4 Bg3 Qh3 Nd2 Qh4 Nd6 Nb3 Qb7+ Ka5 Qb6+ Ka4 Nb7 Qf2 Qc4 Qd4 Q2c3 Na5 Qgg6 Be2 Qb1 Bd3 Qbc2+
2b2QK1/2r1b3/2BrrNN1/R3R1qp/RnB5/BP4n1/k2Q2BP/1B1rRr2 b - - 0 1 legal: proof: f4 e5 d4 g5 dxe5 c5 fxg5 b5 Qd2 c4 Qd1 c3 bxc3 b4 Nh3 b3 axb3 Ba6 Ng1 Bc8 Kd2 Ke7 Ke3 Ke6 Kd4 h5 g4 f5 e4 d5 c4 a5 c5 a4 c4 f4 g6 f3 c6 f2 g7 a3 c5 a2 c7 Be7 g5 Na6 g6 Nf6 g8R Rb8 g7 Ra8 c6 Bb7 c8Q+ Qd7 c7 Ng4 Qd2 Ne3 Bg2 f1R Nf3 Ng4 Nc3 Bg5 Ba3 Bc6 Nh4 Be7 Qf8 Rh6 c8B Rff6 Rhe1 Ra7 Ng6 Ba4 Rh8 Rc7 g8B+ Rf7 Bh7 Nb4 Ba6 Nf2 Bc4 Qd8 Rg8 Kd7 e6+ Kc6 Ke5 d4 Nd5 Kc5 Nf6 d3 Kf5 Be8 e5 Bd7 Rh8 Bc8 Kg5 Bd6 e7 Nh1 e8R Rfe7 e6 Ng3 Rg8 Red7 e7 Kd4 Rh8 Bc5 Re5 Rd6 Rae1 a1R Rf5 Ba7 Ra5 Bc5 Re5 Rf1 Re1 Qd7 Ra4 Qb5 Rg8 Bd7 Rea8 Be6 e8B Bc8 R8a5 Re6 Re5 Be7 Bec6 Qd5 Qg7 Rd6 Re8 Qg8 Qf8 Qg7 Qf2+ Kc3 Qa2 d2 Re1 Bd8 R8e5 d1R Qf2 Qe7 Qe3+ Kc2 Qd2+ Kb1 Nf4+ Ka1 Bc2 Ka2 Ng6 Rh7 Qe2 Rf7 Kh6 Rg7 Qd2 Rg8 Nd7 Qg5+ Kh7 Be7 Nf6 Rh8+ Kg7 Rh7+ Kg8 Rf7 Nd7 R7f2 Nf6 Re2 Red5 Ree6 Rdc5 Qh6 Rce5 Qg5 Bb1+
NB4r1/1Rb2p2/2kRn1b1/1R4N1/1K2P2r/r1P1nnN1/1Rq2N1r/QBN2Q2 b - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 e5 fxe5 c5 a4 c4 axb5 c3 dxc3 Qg5 c4 Qf6 c5 Qd8 Kd2 d5 Kc3 Kd7 h4 a5 e4 g5 b4 a4 b6 g4 h6 g3 h7 a3 b5 g2 c6+ Ke8 b7 a2 c7 Kd7 h5 Bd6 b6 Qe7 e6+ Kc6 h6 Bg3 Rh5 Ra7 Nh3 g1N Bd3 Qd7 e7 Be1+ Nd2 Ra5 e8N Qe7 Ng7 Qg5 Ne6 Bd7 c8N Na6 b8R Rb5 b7 Qh4 Nb6 Qf2 Na8 d4+ Kc4 Be8 Nb3 Re5 Bf4 Nc7 c3 Bd2 Qf1 Rg5 Rd1 Rg2 Bg3 a1R Re5 Qe2 Nf2 Bf4 Rd2 Ra5 Qa1 Bd7 Nc1 Ra7 Ng5 Ne7 Re6+ Bd6 Rb2 Rg8 h8N Ned5 h7 Nf3 Ng6 Ra3 h8Q Bc8 Rf6 Bf5 Nf4 Bg6 Qh3 Qd1 Bb1 Qc2 Nge6 Be5 Nh5 Ne3+ Kb4 Bf4 Rd8 Be5 Rf5 Bf4 Ng5 Ne6 b8R Be5 Bf4 Rg4 Rb7 d3 Qf1 d2 Nfh3 Rh4 Ng3 Bb8 Rfb5 d1R Qe2 Rd2 Qf1 Rh2 Nf2 Bc7 Rd7 Bb6 Bb8 Bc7 Rd6+
5r2/2r3Q1/1P1q1nK1/2p1b3/NQ1B1Q2/1B1pN1bB/rRbB3P/1BRQn2k b - - 0 1 illegal: No proof kernel
3n1N1Q/n1R3R1/8/n2rP2r/1b1P1NB1/1rBbBQN1/R2K1Bq1/Rb3r1k b - - 0 1 legal: proof: f4 b5 g4 h5 gxh5 e5 fxe5 d5 a4 d4 axb5 d3 cxd3 Be6 d4 Bh3 d5 Bc8 h4 Ke7 b4 g5 d4 a5 e4 f5 b6 c5 b7 a4 h6 a3 b5 c4 h5 c3 d6+ Ke6 d7 g4 b6 f4 h7 a2 h6 f3 Ne2 g3 Rg1 g2 Be3 c2 Ng3 c1R Be2 f2+ Kd2 f1B Nc3 Ra5 Nd5 Qg5 d8B Nc6 b8R Rb1 b7 Nge7 Ra8 Na7 b8B Nec6 Be7 Bd7 Bb4 Rb3 Bc3 Bb4 Bh5 Qg6 Qf3 Bd3 Bf2 Rd8 h8N Qg7 Rgc1 g1R h7 Rf1 Ng6 Rh8 Bd6 Nd8 Be7 B7b5 Bg5 Bb1 Bge3 B5d3 Rc2 Rc5 Rc8 Qb7 Rc7 Ra5 Nb6 Rd5 Nd7 Rf8 h8Q Rf5 Qg2 Qa8 Bf3 Rh5 Nf4+ Ke7 e6 Kd6 e7 Qb7 Nfe2 Qa8 e5+ Ke6 Nh1 Kf5 e8R Qc6 Qg3 Qb7 Bg4+ Ke4 Qh3 Qc6 Rg8 Qg6 Be6 Qg2 Nhg3+ Kf3 Rg6 Qh1 Qf5+ Kg2 Rg7 Kh2 Nf8 Qg2 Ne4 Kh1 Qf3 Ba3 Rb2 Bb4 Bg4 Bbc2 Rd1 a1N Ra2 Bb1 Nf4 Ra3 Re1 Nb3+ Kd1 Na5 Kd2 Rb3 Rd1 Bbc2 Rda1 Bb1 Ng3+
NRR5/QQ2b2b/Qb1NK2R/k1bPBP2/1q3bn1/r2B4/2n2Qr1/R4q1B b - - 0 1 illegal: No possible last move, all moves rejected
2QB3Q/3kq3/n1rBN2Q/Qr5B/2p2n2/Pn1r2N1/RRpPb1R1/2b3KB b - - 0 1 illegal: Other
8/R2q2b1/1NN1n3/R3B2R/pb4rk/N1r1pbnP/KPQ2RQ1/1Bq2Q1N b - - 0 1 legal: proof: e4 b5 g4 d5 c4 h5 cxd5 f5 exf5 b4 gxh5 b3 axb3 Rh7 b4 Rh6 b5 Rh8 f4 Kf7 d4 Kf6 Kd2 g5 Kc2 a5 Kb3 c5 h3 e5 d6 c4+ Ka2 e4 d7 c3 d5 c2 h6 g4 h7 g3 b6 g2 b7 Be7 d6 Bf8 Bd3 Ne7 Na3 Bg7 Ne2 g1B Ng3 Qc7 d8N Qb6 d7 Nbc6 b8N Ne5 Ndc6 N5g6 d8Q Qd4 Qd5 Rd8 h8R Bd7 Rh5 Be6 Nd7+ Kf7 f6 Nf8 f5 Rdc8 Bf4 c1Q Nb6 e3 Nb4 Rc3 Bb1 Bf2 Qc2 Be1 Be5 Rac8 Rg1 R8c4 Qdg2 Bd5 Nh1 Bf3 Nc6 Ne6 Rf1 Qd7 Rf2 Kf8 f7 Rg4 Nb5 Ng8 Na3 Nf6 Nd4 Ke7 f8R Ne4 Ra8 Ng3 f6+ Kf7 Ra7 Bd2 Nc6 Be1 Rf5 Kg6 f7 Kh6 f8Q Bd2 Rf7 Kh5 Rf5+ Kh4 Qf7 Rc5 Rg5 Bb4 Qf4 Rc3 Qc4 Nf8 Qcf1 Ne6 Nb5 Rcc4 Kb3 Nc7 Ra3 Rc5 Ka2 Ne6 Ra4 Rc3 Na3 Be7 Rd4 Bd6 Rd5 a4 Rda5 Bb4 Rh5+
q2q2R1/Rb2q1PB/R2Q2n1/r3N2B/N1BN2bP/N1K5/2b4k/3bB1bR b - - 0 1 illegal: No possible last move
Q2K4/pb1b4/Pnb4R/3NnP2/p1kBQ1P1/3R1BNr/2r1b1Bq/R3N2Q b - - 0 1 illegal: Other
n5kb/1b1rp3/3N1Nn1/4B1K1/2B3P1/R1P1PRRb/bRQ1q1qp/QR1N4 b - - 0 1 legal: proof: d4 b5 f4 a5 a4 g5 axb5 c5 dxc5 g4 f5 g3 hxg3 Nh6 g4 Ra6 g5 Rg6 fxg6 Ng8 g3 Ba6 g4 Bc8 Kf2 d5 Ke3 h5 Kf4 f5 b4 d4 g7 Kf7 b6 a4 g6+ Kf6 b7 h4 e3 d3 c6 a3 c7 d2 b5 h3 b6 a2 Bc4 h2 Nc3 Qd3 Bb2 Na6 b8R Qe2 b7 Nh6 g8Q Nf7 g7 Ne5 Nh3 Rh5 Qb1 d1B Nf2 Rg5 Qh7 Ng6+ Kg3 Be6 g8R Bg7 c8N Kf7 Nd5 Nc7 Be5 Na8 c3 f4+ Kh3 f3 Rg1 Bb3 Nd1 f2 Rg3 Bf5 Qb2 Be4 Rb1 Rf5 Qa1 Rf6 Rb2 Rd6 Rd8 Rd7 Nd6+ Ke6 Rb1 Bh8 Rf8 Bh1 Rbc8 Bf3 b8R f1B+ Rg2 Be4 Rc6 Bf3 Ra6 Be4 Kg3 Bf3 Rg1 Bh3 Ra3 Bh1 Rf3 B1g2 Qb2 a1Q Rb4 Qa2 Qa1 Qad2 Rb8 Ba2 R8b2 Nh4 Kf4 Ng6+ Kg5 Bh1 Rgg3 Qg2 Nf5 Qde2 Qh6 Kf7 Nd6+ Kg8 Qf8+ Kh7 Qf5 Kg8 Qc2 Qgf1 Rf5 Be4 Rf7 Qfg2 Rff3 Kh7 Nf4 Bb7 Nd5 Kg8 Nf6+
4BB1q/P1n1KRBq/7b/r1p1PQQ1/4NRR1/rRN2P2/3Nn3/1rkb1b2 b - - 0 1 illegal: No proof kernel
6rr/BR3NN1/PK3RRr/1b3p2/2N3rn/3PQ2B/qNk1Pb2/B1nnQ3 b - - 0 1 legal: proof: f4 a5 g4 h5 gxh5 e5 fxe5 d5 b4 d4 bxa5 d3 cxd3 Nf6 d4 Ng8 d5 Rh6 Na3 Rh7 Nb1 Rh8 Kf2 Ke7 Ke3 c5 h4 g5 a4 f5 h6 b5 d6+ Ke6 h5 Kd5 d3 g4 h7 g3 d7 c4 a6 b4 a7 g2 h6 c3 e6 c2 e7 b3 e8Q b2 a5 Na6 Nf3 g1R Bh3 Rf1 Rg1 Qc7 d8N Be7 Ne6 Bd7 Qe1 Qd6 Ne5 Bb5 Nc4 Bh4 Nba3 b1N Ng7 Rf4 Nb2 Nc5 a6 Ne7 Nac4 Nc3 Rb1 Nb3 Rg6 Qa3 Rf6 Rd8 a8R Ng6 Rb8 Rd4 Rb7 Rg4 Bd2 Rg8 h8B c1R h7 Qa2 Rbb6 Kc5 Qe4 Kb4 Rbd6 Na1 Kd4 Kb3 Kc5 Kc2 Be3 Bf2 Kb6 Nd1 Bd4 Nh4 Qe3 Nb3 Rg6 Qa4 Rdf6 Qa3 Be5 Qa2 Bb8 Rdf8 Ba7 Rc8 Nh5 Ra8 Bg7 Rad8 h8N Rc8 Nf7 Rh8 Rc6 Rcg8 Be5 Rh6 Ng7 Rgh8 Ra1 Rb1 Rcf6 Nc1 Bd4 Qb3 Ra4 Qa2 Rb4 Rg8 Na4 Rgh8 Ba1 Rb3 Nab2 Rc3 Na5 Rcc8 Nac4 Rcg8 Kc5 Ba4 Rb7 Bb5 Kb6
3r1BBB/N2RqN1r/1r5p/1R1b1n1B/1br1k1b1/2P1Q2P/1R1KQ1P1/5N1r b - - 0 1 illegal: No possible last move, all moves rejected
q3Rk2/PR1K2N1/3B1r1p/2PNbr1Q/PbR5/2qqR3/bnBRR3/3Q4 b - - 0 1 legal: proof: e4 a5 b4 f5 exf5 g5 bxa5 c5 d4 Na6 dxc5 Nb8 f3 Bh6 f4 Bf8 fxg5 Nf6 g4 Bg7 h4 Nh5 g6 Bf8 g5 Nf6 h5 Ng8 g7 Nc6 Qd4 Ne5 Qd1 Ng6 hxg6 Qb6 Bg2 Qc7 Bf1 Qd8 Kf2 b5 Kg3 e5 Kg4 d5 a4 e4 c4 h6 a6 d4 c6 e3 a7 b4 c7 e2 Bf4 e1B Bd3 b3 Ra3 b2 Nf3 Qd7 Bc2 d3 Rh2 d2 Nd4 Bg3 Bd6 Bf4 Ne6 Qb5 f6 Be5 Kf5 Qb8 f7+ Kd7 Nc3 b1Q Re2 Q8b5 Nd5 Qa1 Rae3 Ba6 c8R Be7 f8R Qd4 Rfe8 Nf6 g8Q Qc6 g7 Ng4 g6 Nf2 Qf7 Qc3 g8R Nd3 g7 Nb2 Qh5 Rb8 Rgf8 Qa8 g8R Rb5 Rgg2 Rc5 Rf7 Rf8 Ng7 Rc6 Qe1 d1Q Rd2 Qb1 Qed1 Rb6 Rge2 Bb7 Be4 Qbd3 Rc5 Bc6 Rb8 Bb5 Rb7+ Kd8 Ke6 Rc6 Nf5 Ke8 Rh7+ Rf7 Ng7+ Kf8 Kd7 Rf5 Bc7 Qdd4 Bc2 Rcf6+ Rc6 Bb4 Bd6+ Kg8 c5 Ba6 Rcb6 Bc4 Rb5 Qdd3 R5b6 Ba3 Rb4 Ba2 Rc4 Bb4 Ne8 Rg6 Re7 Kf8 Ng7 Rgf6 Re8+
1q3Nr1/N1Rbn1BK/N7/QrpBqrR1/R1PPB3/6P1/n2q4/R2Bk3 b - - 0 1 legal: proof: b4 a5 h4 g5 hxg5 e5 f4 b5 fxe5 d5 a4 d4 axb5 d3 exd3 a4 d4 Bc5 d5 Be3 Rh5 Bb6 Rh1 Ba5 bxa5 Bb7 Bc4 Ba6 Bf1 Bc8 Ke2 Kd7 Kd3 f5 c4 h5 d6 Ke6 b6 c5 b7 f4 Ke4 f3 d4 a3 g6 f2 d7 a2 g7 h4 a6 h3 a7 h2 g3 Nc6 b8N Nce7 Qd2 Nc6 Bg2 f1Q Nh3 Qa5 d8R Rh6 Ng5+ Ke7 e6 Kf6 e7 Bg4 e8B Qa3 Rd5 Nge7 g8B Qb3 Bh5 Nb4 Na6 Bd7 Na3 Qf2 Bd1 Rh5 Ne6 Rf5 Nb5 Rd8 Qc3 Qd2 Nf8 Kg5 a8R Qb2 Rf1 h1Q Na7 Qh8 Re5 Rb8 Bd5 Rb5 Rc8 Qg7 Rc7 Qb3 Rf3 Kg4 Bh1 Qbb2 Qa3 Kh3 Qa5 Kh2 Bg2 Kg1 Ra3 Kf2 Ra4 Ke1 Bh1 Rf2 Rg5 Rf5 Rb1 a1R Bg2 Ra3 Ra1 Na2 Bgf3 Qdb4 Bf4 Qh8 Be5 Q2d2 Bg7 Rb3 Bfe2 Rb8 Bd3 Ra8 Bb1 Qb8 Bd3 Rb5 Bb1 Rf4+ Ke5 Qh5 Bf5 Qe2+ Kf6 Qe5+ Kf7 Ng6 Kg8 Ne7+ Kh7 Rf2 Bb1 Rf5 Ng6 Qb7 Bd3 Rg8 B3e4 Qb8 Nf8
qN2B1b1/1rN2Bp1/3p1QPk/2r1q2q/3P1N1p/2RQ2N1/1n2BbnP/4B1RK b - - 2 3 legal: proof: b4 c5 bxc5 b5 e4 f5 exf5 Qb6 a4 Qc7 axb5 Qd8 d4 Kf7 c4 h5 f4 a5 Kf2 e5 g4 h4 Kg2 d6 b6 e4 g5 a4 g6+ Kf6 b7 a3 c6 a2 c5 e3 c7 e2 c6 e1Q Bd2 Bd7 c8B Qde8 c7 Q8e3 Ne2 Ne7 Nbc3 Nbc6 b8N Nd8 Nb5 Qe5 Rc1 a1Q Rc3 Be6 Ng3 Ra5 Be2 Ndc6 Bd7 Nd5 c8B Ncb4 Nc7 Be7 Rg1 Bg8 Kh1 Nd3 Be8 Nb2 Be6 Rc5 B6f7 Ne3 Qb3 Qed1 Be1 Bd8 Qc2 Qa8+ Qe4 Ng2 Qd3 Ke7 f6+ Kf8 Bf1 Qdh5 f5 Be7 Be2 Bd8 Nca6 Ba5 Nc7 Bb4 Bc4 Ba5 f7 Ke7 f8N Kf6 Bcf7 Kg5 f6 Kh6 Nfe6 Bb4 Nf4 Ba5 Rb3 Bd2 Rc3 Be3 Bd5 Bf2 f7 Na4 f8Q Nb2 Bc4 Qhg5 Nd7 Be6 Qf6 Qh5 Bb3 Rf8 Nb5 Bg8 Nb8 Rf7 Ba2 Rd7 Baf7 Rb7 Nc7
7B/pn1n1KP1/2rk2p1/Pn1pRb1B/2N1Q3/PRR1b1P1/q3rNR1/R2Nr3 b - - 0 1 illegal: No proof kernel
QK1Nn1R1/2R1rpP1/7R/B3PPB1/1Bq5/n2B2Pk/1p1Nr2r/N4rn1 b - - 0 1 legal: proof: c4 d5 cxd5 g5 b4 a5 bxa5 Ra6 h4 Ra7 hxg5 Ra8 d4 e5 Rh4 e4 Rh6 Bd6 Rh1 Be5 dxe5 Bd7 Nc3 Bb5 Nb1 Bd3 exd3 Ra6 Kd2 Ra7 Ke1 Ra8 Kd2 Kd7 Ke3 c5 a4 h5 f4 b5 a6 h4 d6 Ke6 g6 Kf5 d7 b4 a5 b3 g7 c4 Kd4 h3 Kc5 h2 Kd6 b2 g3 c3 a7 c2 a6 e3 d4 e2 d5 Kg4 f5 Nc6 Nd2 Nce7 Nb3 Rh7 Nf3 e1R Bg5 c1R Bd3 Nf6 Nfd2+ Kh3 Qf3 Rc4 Rc1 Re2 Na1 Qe8 d8B Rce4 Kc7 Re1 d6 R4e2 d7 Nc6 Be7 Nd4 d8B Rf1 Bb4 Qa4 Qc6 Rb8 a8R Nc2 a7 Rb7+ Kc8 Rd7 Bda5 Na3 Kb8 Re7 Qd5 Ne8 Rc7 Qb3 Kb7 Kg4 Qc6 Qc4 Qg2 Nf6 Rg8 Ne8 Kb8 Rh3 a8N Rh6 Rc8 Rh5 Nc7 Rh7 Rg1 h1N Ne6 Nf2 Nd8 Nh3 Rh1 Ng1 Rc7 Rh4 Qa8 Rh7 Rh6 Rh8 Rb6 Rhh2 Ra6 Kh3 Rh6+
2n2b1R/3Nr3/rQn1n3/1P1Kb1nR/kQP2N2/Pbq4B/2bBP3/N2QN3 b - - 0 1 illegal: No proof kernel
B1RN1k1q/q5Qp/1BQ4R/B1K2PNb/1R1nq1r1/8/3P2PP/b1Rbnr2 b - - 0 1 legal: proof: e4 b5 f4 d5 a4 f5 axb5 g5 fxg5 f4 c4 Qd7 cxd5 Qf5 exf5 Bd7 Qg4 Be6 Qd1 Bc8 Ke2 a5 Kd3 c5 Kc4 e5 b4 f3 g6 e4 b6 a4 g7 f2 d6 a3 b7 a2 b5 e3 b6 e2 Bb2 e1Q Qc2 Qe4+ Bd4 Na6 b8Q Nb4 b7 Nd3 Be2 f1B Qc3 Ne1 Qc7 Bd7 Nh3 Ne7 g8R Ba4 Na3 Bd1 Nb5 Nc6 d7+ Kf7 b8R Bg7 Rgd8 Rg8 Na7 Bh8 Q3g3 Rg4 Rb4 Bf6 Kb5 c4 Bb6 c3 Kc5 c2 Bf3 Bfe2 Rc8 Nd4 d8B+ Kf8 Qc6 Rb8 Rc1 a1Q Ng5 Qa4 Ra1 Bh8 Ra3 c1Q+ Rc3 Qaa1 Ba5 Qcb1 Bdb6+ Qe8 Bd5 Qe4 Qe5 Qa4 Rh3 Bf3 Rh6 Ra8 Qg6 Qd7 Nc6 Qa7 Nd8 Rb8 Qc6 Rb7 Qa4 Rc7+ Kd6 Rc1 Ba8 Nec2 Nde6+ Kg8 Qd5 Bde2 Rb2 Nb5+ Kc5 Rf4 Bc3 Bh5 Qad4 Rg4 Rf1 Be5 Rf3 Rf1 Ba5 Ne1 Rb4 Bd1 Qc6 Bg7 Qdd7 Ba1 Nd8 Nd4 Rc3 Qf8+ Qe7 Qf6 Qed7 Kf8 Rc1 Qh8 Qg7+
1NK1b1nR/2NP2Pq/1QpQ2n1/p1R5/4P1N1/2b1B3/1qr3Pr/1N1rkB1Q b - - 0 1 legal: proof: f4 b5 h4 g5 hxg5 e5 fxe5 d5 a4 d4 axb5 d3 cxd3 Bb7 d4 Ba6 d5 Bc8 Kf2 Ke7 Kg3 h5 Kf4 a5 b4 f5 d4 c6 e4 h4 e6 Kd6 b6 h3 g6 h2 e7 Bd7 e8N+ Ke7 Ke5 f4 b5 f3 g7 f2 b7 Nh6 b6 Ng8 Nc7 Be8 Nh3 Nd7+ Kf5 Kd6 b8N Qh4 b7 Ne5 Be3 Ng6 Ra4 Qh7 Rc4 Ra6 Rc5 Rb6 Qe1 Rb2 Qc1 Ke7 d6+ Kf7 d7 Rc2 d8Q Be7 d5 Bf6 d6 Bc3 Bb5 f1Q+ Nf2 Qe2 Ng4 Qd2 Bf1 Qd4 Rg1 h1R d7 Rh2 Rh1 Qb4 Qd1 Qb2 Qh4 Ne5+ Kf4 Kg6 Qf6+ Kh5 Qfd6 Kh4 Qc1 Qh6+ Kf5 Qh5+ Ke6 Kg3 Qcd1 Qh7 Qc1 Nh6 Ke7 Rf8 Kd8 Ng8 Qe1+ Rff2 Qc1 Rfd2 Kc8 Rd1 Nba6 Qa3 b8Q Qa2 Qb6 Qb2 Qe6 Ng6 Nb8 Re2 Qd5 Rc2 Qd6+ Nf4 Rg5 Qg6 Qdd2 Rh4 Qa7 Re1 Rc5 Qh6 Ba6 Ng6 Qb6 Qh8 Qe2 Rh5 Qcd2 Rd1 Qf1 Rh7 Rhh5 Rh6 Qh1 Rh7 Rhg5 Rh2 Qd4 Qh3 Rh5 Qh4 Rh8 Qh7 Bh6 Be1 Bf1 Bc3 Ne3 Kf2 Ng4+ Ke1 Be3 Nh4 Qd5 Ng6 Qd6
NK6/1Rp1r3/p3N1R1/1QQ1B1P1/3P3Q/kN2pBQb/P4q1P/rb1nbb2 b - - 0 1 illegal: No proof kernel
1B2n1N1/Rbq5/2Qn1PK1/r1NqPN2/Nr2Rq2/Pk2B2B/1P5b/1rB2r2 b - - 0 1 illegal: No proof kernel
1rb2b2/qN3p2/BR1RnP2/P1p1pN1q/3Q1P1N/nRKpr3/4P1N1/B5Rk b - - 0 1 illegal: No possible last move, all moves rejected
5n2/PbpPpBbQ/4P3/4rR2/RqNQPQN1/1b6/2P2qNB/2nb1k1K b - - 1 2 legal: proof: f4 a5 g4 h5 gxh5 d5 e4 Kd7 b4 Kd6 Qg4 b5 bxa5 Kc5 Qe6 Ra6 Qd7 Re6 Qxd5+ Kb4 Qd7 Re5 fxe5 Kc5 Kf2 f5 Kg2 g5 a4 b4 h4 f4 a6 b3 d4+ Kb4 d5 g4 d6 g3 a5 b2 a7 Ba6 a8Q Nh6 Nd2 Kc3 Ra4 b1B Nc4 Ng8 h6 Nf6 h7 Qc8 h5 Ba2 h6 Qb7 Nf3 Ng4 Rh5 Bb3 Nh4 f3+ Kh1 f2 Rf5 Qb4 Bf4 Bb7 a6 Bg7 a7 Rf8 e6 Ne5 h8N Nd3 h7 Nc1 Be2 f1B Bh5 Be2 Bf7 Bd1 N8g6 Kd4 Qd8 Nd7 h8Q Rg8 Qab8 Nf8 Qh7 Rh8 Nge5 g2+ Kg1 Kc3 Bh2 Kd4 Ng4 Kc3 Nb6 Kd2 Nc4+ Ke2 Qd7 Ke1 Qbd8 Rg8 Qb5 Ke2 Qe5 Ke1 Qf4 Rh8 Qg6 Rh5 Qh7 Rg5 Rf6 Rc5 Rf5 Re5 d7 Ke2 Qc8 Bd5 Qa6 Bb7 Qd6 Ke1 Qd5 Ke2 Qd4 Ke1 Bg3+ Ke2 Kh2 g1Q+ Kh3 Ba6 Ng2 Qf2 Kh2 Bb7 Kh1 Kf1 Bh2
2K1Q2b/P2P1PnP/1N1PR3/B1nq1BPr/1n4b1/3n1b1N/4RR2/1N1krb2 b - - 0 1 illegal: No proof kernel
n2B3K/Q3R3/1qkPBNB1/pq3PnP/2Pp4/1rP4Q/Pr2bN1R/5b1n b - - 0 1 illegal: No proof kernel
3r2Nb/4nK2/1n3nP1/qB2q2b/1Pp2R1R/n1pkpnQP/N2bR2P/8 b - b3 0 1 illegal: Lossy FEN conversion
1r2N1B1/1Np2K1R/pq2rQn1/nN4pr/k3bBpP/8/BN4N1/b4Qq1 b - h3 0 1 illegal: Lossy FEN conversion
3b3b/k1r1q2n/3n2Kp/R4R2/p1rpPQ1R/2bB4/PQR3NN/2Bq1r1b b - e3 0 1 illegal: Lossy FEN conversion
nB2B1BQ/P4QRN/5rRK/1q3N1R/1pPb2Bn/3Q4/pP2qp2/1k1r3q b - c3 0 1 illegal: Lossy FEN conversion
rqB1k2q/BbpN4/3n1N2/qr2P1p1/1pP1PN2/bB1B2KP/6R1/R4B1Q b q - 0 1 illegal: No proof kernel
1q2k1br/P4R2/NB1p1r1R/1KR1QB1p/5p1P/1N4p1/BRP2Pr1/n4Q1r b k - 0 1 illegal: No proof kernel