Chess Datasets
Collection
3 items
•
Updated
fen
stringlengths 24
80
| depth
int64 1
245
| evaluation
stringlengths 2
7
| best_move
stringlengths 2
7
| best_line
stringlengths 2
67
|
---|---|---|---|---|
7r/1p3k2/p1bPR3/5p2/2B2P1p/8/PP4P1/3K4 b - - | 39 | 0.58 | Kg7 | Kg7 Re2 Rd8 Rd2 b5 Be6 Kf6 Bb3 a5 a3 |
8/4r3/2R2pk1/6pp/3P4/6P1/5K1P/8 b - - | 58 | 0.00 | Ra7 | Ra7 Ke3 Ra3+ Ke4 Ra2 h4 gxh4 gxh4 Rh2 Rc1 |
6k1/6p1/8/4K3/4NN2/8/8/8 w - - | 87 | M18 | Nd6 | Nd6 Kh7 Kf5 g5 Nh5 Kh6 Ng3 Kg7 Ke6 Kf8 |
r1b2rk1/1p2bppp/p1nppn2/q7/2P1P3/N1N5/PP2BPPP/R1BQ1RK1 w - - | 25 | 0.24 | Be3 | Be3 Rd8 Rc1 d5 cxd5 exd5 exd5 Bxa3 bxa3 Nxd5 |
6k1/4Rppp/8/8/8/8/5PPP/6K1 w - - | 99 | M1 | Re8# | Re8# |
6k1/6p1/6N1/4K3/4N3/8/8/8 b - - | 62 | M27 | Kh7 | Kh7 Kf5 Kh6 Ng3 Kh7 Kg5 Kg8 Ne4 Kf7 Kf5 |
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - | 64 | 0.19 | Nf3 | Nf3 d5 d4 e6 c4 Nf6 Nc3 Bb4 cxd5 exd5 |
8/8/2N2k2/8/1p2p3/p7/K7/8 b - - | 54 | 0.00 | b3+ | b3+ Kxa3 Ke6 Kxb3 Kd5 Kc3 Kxc6 Kd4 e3 Kxe3 |
8/1r6/2R2pk1/6pp/3P4/6P1/5K1P/8 w - - | 46 | 0.00 | Rc2 | Rc2 Kf5 h4 g4 Rc5+ Ke4 Rxh5 Rb2+ Kg1 f5 |
1R4k1/3q1pp1/6n1/b2p2Pp/2pP2b1/p1P5/P1BQrPPB/5NK1 b - - | 31 | -1.05 | Kh7 | Kh7 Qc1 Bc7 Bxc7 Qxc7 Ra8 Qe7 f3 Bd7 Ra7 |
8/5kp1/6N1/4K3/4N3/8/8/8 w - - | 61 | M23 | Kf5 | Kf5 Ke8 Ke6 Kd8 Kd6 Kc8 Nc5 Kd8 Ne6+ Ke8 |
1k1r1r2/pbp3pp/1p1q1p2/2p2Q2/4P3/1P1PB3/P1P3PP/4RRK1 w - - | 31 | 0.08 | a4 | a4 g6 Qf2 f5 Bh6 Rg8 Bg5 Rde8 e5 Qd5 |
8/3B4/8/p4p1k/5P1p/Pb6/1P4P1/6K1 w - - | 36 | 6.76 | Bxf5 | Bxf5 Bf7 Kh2 Bd5 Bd7 Bb3 Kh3 Kg6 Bg4 Bd5 |
r2qk2r/3n2p1/1pp1p3/3pPpb1/P2P1nBp/1NB4P/1PP2P2/R3QR1K w kq f6 | 19 | 0.26 | exf6 | exf6 Nxf6 Bd2 O-O Bxf4 Bxf4 Qxe6+ Kh8 Bf5 Qc7 |
1R6/3q1ppk/6n1/b2p2Pp/2pP2b1/p1P5/P1B1rPPB/2Q2NK1 b - - | 36 | -0.76 | Bc7 | Bc7 Bxc7 Qxc7 Ra8 Qe7 f3 Bd7 Ra7 h4 Bxg6+ |
3r4/1p3k2/p1bPR3/5p2/2B2P1p/8/PP4P1/3K4 w - - | 38 | 1.80 | Ke1 | Ke1 b5 Bb3 a5 a3 Bd7 Re7+ Kg6 Kf2 Bc8 |
1r2kb1r/pBp2ppp/4pn2/5b2/Q1pq4/6P1/PP1NPP1P/R1B2RK1 b k - | 26 | 3.48 | Nd7 | Nd7 Nf3 Qd6 Rd1 Qxd1+ Qxd1 Rxb7 Qa4 Bd6 Bf4 |
3r4/6k1/2bPR3/pp3p2/2B2P1p/P7/1P3KP1/8 w - - | 28 | 3.37 | Ba2 | Ba2 Bd7 Re7+ Kf6 Kg1 Bc8 Rf7+ Kg6 Rc7 Kh5 |
rnbqkbnr/ppp1pppp/8/3p4/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - | 50 | 0.24 | c4 | c4 e6 Nc3 Nf6 cxd5 exd5 Bg5 Be7 e3 O-O |
r2k2r1/pppb1p1p/2p5/8/3Bn3/8/PPP2PPP/2KR1B1R b - - | 28 | 1.58 | Nd6 | Nd6 Bd3 h6 Rhg1 Ke7 f3 Rae8 Rge1+ Kf8 g4 |
2r1r1k1/5ppp/8/8/Q7/8/5PPP/4R1K1 w - - | 99 | M2 | Rxe8+ | Rxe8+ Rxe8 Qxe8# |
2r1r1k1/3Q1p2/7R/4N1p1/P4n2/1q5P/5PP1/4R1K1 w - - | 40 | M18 | Qf5 | Qf5 Ng6 Rxg6+ fxg6 Qxg6+ Kh8 Qh5+ Kg8 Qxg5+ Kh8 |
8/5p1k/3r2p1/7p/R6P/8/5PPK/8 w - - | 64 | 0.00 | f3 | f3 f6 g4 g5 gxh5 Kh6 hxg5+ fxg5 Kg3 Kxh5 |
rnbqkbnr/pp2pppp/2p5/3P4/3P4/8/PP2PPPP/RNBQKBNR b KQkq - | 51 | 0.15 | cxd5 | cxd5 Nc3 Nf6 Bf4 Nc6 e3 Bf5 Qb3 Na5 Qa4+ |
8/4k3/8/4K3/8/4P3/8/8 b - - | 99 | M16 | Kd7 | Kd7 Kf6 Ke8 e4 Kd7 e5 Ke8 Ke6 Kd8 Kf7 |
r1b2rk1/pp3ppp/1q2p3/2npP1N1/8/8/PPQ2PPP/R3RBK1 b - - | 23 | 0.50 | g6 | g6 Qd2 Qd8 b4 Ne4 Nxe4 dxe4 Qf4 Bd7 Rad1 |
rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - | 60 | 0.15 | e5 | e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 Re1 Nd6 Nxe5 |
k1K5/8/8/1P6/8/8/8/8 b - - | 95 | M16 | Ka7 | Ka7 Kc7 Ka8 Kb6 Kb8 Ka6 Kc7 b6+ Kc8 Ka7 |
8/8/2B2k2/p4p2/5P1p/Pb6/1P3KP1/8 w - - | 42 | 5.64 | Kg1 | Kg1 Ke6 Kh2 Kd6 Be8 Kc5 Kh3 Kd6 Bb5 Ke7 |
rnbqkb1r/pp2pp1p/5np1/2pp4/3P4/1P1BPN2/P1P2PPP/RNBQK2R b KQkq - | 24 | -0.19 | Bg7 | Bg7 O-O O-O Bb2 cxd4 exd4 Nc6 h3 Nb4 Be2 |
rnbqk2r/ppp2ppp/5n2/2bNp3/2B1PP2/8/PPPP2PP/R1BQK1NR b KQkq - | 31 | -0.21 | Nxe4 | Nxe4 Qe2 Qh4+ Kf1 O-O b4 Bg4 Qe1 Qxe1+ Kxe1 |
R4nk1/6p1/8/5pb1/P1pN2b1/7p/2B3P1/5K2 w - - | 33 | 3.20 | gxh3 | gxh3 Bxh3+ Kf2 Kf7 a5 Bh4+ Kf3 Ng6 Bxf5 Ne5+ |
8/p5p1/3kp1p1/PPp1np2/2P1p3/4P2P/3KBPP1/8 w - - | 31 | 0.46 | f3 | f3 exf3 gxf3 Nf7 f4 e5 fxe5+ Nxe5 h4 Kc7 |
8/8/2b5/5B1k/1P3P1p/7K/6P1/8 w - - | 25 | 15.92 | g3 | g3 Kh6 g4 Kg7 g5 Bd5 Kxh4 Bb7 Bg4 Bh1 |
R4nk1/6p1/8/5pb1/P1p3bp/8/2B1N1P1/5K2 w - - | 32 | 3.03 | a5 | a5 Be3 Ng1 Kf7 a6 Ne6 a7 Bxa7 Rxa7+ Kf6 |
8/p4pp1/3kp1p1/PPp1n3/2P1p3/4P2P/4BPP1/4K3 w - - | 23 | 0.42 | f4 | f4 Nd7 Kf2 Kc7 Bd1 f5 Kg3 Nf6 Kh4 Nh7 |
8/p4pp1/3kp1p1/PPp1n3/2P1p3/4P2P/3KBPP1/8 b - - | 23 | 0.00 | g5 | g5 f4 exf3 gxf3 Ng6 Ke1 f5 Kf2 f4 Bd3 |
7r/1p4k1/p1bR1r2/5p1p/2P2P2/3B4/PP4P1/3KR3 w - - | 49 | 0.00 | c5 | c5 Rxd6 cxd6 Rd8 Re7+ Kf6 Re5 Bd7 Kc2 Be6 |
7r/1p4k1/p1bR1r2/2P2p1p/5P2/3B4/PP4P1/3KR3 b - - | 46 | 0.04 | Rxd6 | Rxd6 cxd6 Rd8 Re7+ Kf6 Re5 Bd7 Ke2 Be6 g3 |
5r1r/1p4k1/p1bR4/5p1p/2P2P2/3B4/PP4P1/3KR3 b - - | 36 | 0.02 | Rf6 | Rf6 c5 Rxd6 cxd6 Rd8 Kc2 Rxd6 g3 Rg6 Re3 |
8/1r6/5pk1/6pp/3P4/6P1/2R2K1P/8 b - - | 45 | 0.00 | Rb3 | Rb3 Rd2 Kf5 Kg2 Ke4 h4 gxh4 gxh4 Rb6 Kg3 |
rnbqkbnr/ppp1pppp/8/3p4/3P1B2/8/PPP1PPPP/RN1QKBNR b KQkq - | 52 | 0.02 | c5 | c5 e3 Nc6 Nf3 cxd4 exd4 Bg4 c3 e6 Be2 |
7k/6p1/6Q1/8/8/1B6/8/6K1 w - - | 99 | M1 | Qh5# | Qh5# |
k7/2K5/8/1P6/8/8/8/8 w - - | 99 | M15 | Kb6 | Kb6 Kb8 Ka6 Kc7 b6+ Kc8 Ka7 Kd7 b7 Ke6 |
r2qk2r/3n4/1pp1pp2/3p2b1/P2P1nBp/1NB4P/1PP2P2/R3QR1K w kq - | 19 | 2.53 | Bxe6 | Bxe6 Nxe6 Qxe6+ Qe7 Rfe1 Qxe6 Rxe6+ Kf7 Rxc6 Rhe8 |
r1bqk1nr/pp1pppbp/2n3p1/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - | 37 | 0.35 | e5 | e5 Bxc6 dxc6 a4 Qe7 Na3 Nh6 d3 O-O a5 |
rnbqkbnr/pp2pppp/8/3p4/3P4/8/PP2PPPP/RNBQKBNR w KQkq - | 50 | 0.20 | Bf4 | Bf4 Nc6 Nf3 Nf6 Nc3 Bf5 Qb3 Na5 Qa4+ Bd7 |
8/8/8/3k1K2/8/4P3/8/8 w - - | 87 | M16 | e4+ | e4+ Kd6 Kf6 Kd7 e5 Ke8 Ke6 Kd8 Kf7 Kd7 |
8/8/8/8/3K2k1/6N1/3Q4/8 b - - | 97 | M4 | Kh3 | Kh3 Nf5 Kg4 Ke4 Kh3 Qf2 Kg4 Qh4# |
r1bq1rk1/pp1pppbp/2n2np1/8/2PN4/2N3P1/PP2PPBP/R1BQ1RK1 b - - | 42 | 0.29 | d6 | d6 Nxc6 bxc6 Bxc6 Rb8 Bg2 Qa5 Qc2 Bb7 Na4 |
8/3B4/5k2/p4p2/5P1p/Pb6/1P3KP1/8 b - - | 44 | 6.25 | a4 | a4 Kg1 Bc2 Kh2 Kg7 Kh3 Kg6 Be8+ Kf6 Bb5 |
1r3rk1/pb2q1pp/3ppn2/2p2p2/1PP5/PQ3PP1/1B1RP1BP/R5K1 b - - | 22 | 0.35 | d5 | d5 Be5 Rbc8 cxd5 Bxd5 Qa4 cxb4 axb4 a6 Bd4 |
R4nk1/6p1/8/8/P1pN1pbb/8/2B3K1/8 w - - | 30 | 4.25 | a5 | a5 Bf6 Nf5 Kf7 a6 Bxf5 Bxf5 Bd4 Rc8 Be3 |
r1bqk2r/pppp1ppp/2n2n2/2b1p3/2P1P3/2NP4/PP3PPP/R1BQKBNR w KQkq - | 31 | -0.11 | Be2 | Be2 d6 Nf3 O-O O-O a5 Be3 Ng4 Qd2 a4 |
8/5ppk/3r4/7p/R6P/8/5PPK/8 b - - | 54 | 0.00 | Rd2 | Rd2 f3 Kh6 Ra7 Kg6 Ra6+ f6 Kh3 Rb2 Kg3 |
rnbqkbnr/pppppppp/8/8/3P4/8/PPP1PPPP/RNBQKBNR b KQkq - | 56 | 0.16 | Nf6 | Nf6 Nf3 e6 c4 d5 Nc3 Be7 cxd5 exd5 Bf4 |
8/8/6p1/4p3/6Pk/5K2/5N1p/8 w - - | 43 | 0.00 | Kg2 | Kg2 h1=Q+ Kxh1 Kg3 Kg1 e4 Nxe4+ Kxg4 Kg2 Kf4 |
8/8/6p1/4p3/6Pk/8/5NKp/8 b - - | 34 | 0.00 | h1=Q+ | h1=Q+ Kxh1 Kg3 Kg1 e4 Nxe4+ Kxg4 Kg2 Kf4 Nf2 |
8/8/6p1/4p3/6P1/6k1/5N2/7K w - - | 27 | 0.00 | Ne4+ | Ne4+ Kxg4 Kg2 g5 Nf2+ Kf4 Nd3+ Ke4 Nf2+ Kd5 |
8/8/6p1/4p3/6Pk/8/5N2/7K b - - | 39 | 0.00 | Kg3 | Kg3 Kg1 Kf3 Nd3 e4 Ne1+ Kxg4 Kg2 Kf4 Kf2 |
8/8/6p1/4p3/6P1/6k1/5N2/6K1 b - - | 41 | 0.00 | Kf3 | Kf3 Nd3 e4 Ne1+ Kxg4 Kg2 Kf4 Kf2 e3+ Ke2 |
rnbqkbnr/pp1ppppp/8/2p5/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - | 56 | 0.25 | Nf3 | Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 h3 e6 |
r5k1/p4pb1/4rnpp/1p2p3/4P1P1/3NBP2/1PP4P/R3K2R w KQ - | 24 | 1.70 | Rxa7 | Rxa7 Rxa7 Bxa7 Ra6 Be3 Ra1+ Bc1 Ne8 Rg1 f6 |
8/8/8/8/3K4/5kN1/3Q4/8 w - - | 99 | M4 | Nf1 | Nf1 Kg4 Ke4 Kh5 Kf5 Kh4 Qh6# |
r5k1/R4pb1/4rnpp/1p2p3/4P1P1/3NBP2/1PP4P/4K2R b K - | 20 | 1.60 | Rxa7 | Rxa7 Bxa7 Ra6 Be3 Ra1+ Bc1 Ne8 Rg1 f6 Ke2 |
6k1/5pb1/5npp/1p2p3/4P1P1/3NBP2/1PP4P/r3K2R w K - | 21 | 1.64 | Bc1 | Bc1 Ne8 Rg1 f6 Ke2 Bf8 h4 Nd6 h5 Kf7 |
8/5kp1/6N1/5K2/4N3/8/8/8 b - - | 58 | M22 | Ke8 | Ke8 Ke6 Kd8 Kd6 Kc8 Nc5 Kd8 Ne6+ Ke8 Ng5 |
8/8/6p1/8/4p1P1/6k1/5N2/6K1 w - - | 39 | 0.00 | Nxe4+ | Nxe4+ Kxg4 Kg2 Kf4 Nf2 g5 Kh3 Kf3 Ng4 Ke2 |
r1bq1rk1/1pp3bp/n2p1pp1/p1nPp1P1/2P1P3/2N1BN1P/PP2BP2/R2QK2R w KQ - | 17 | 0.45 | gxf6 | gxf6 Qxf6 Qd2 a4 Rg1 Bxh3 Rg3 Bd7 O-O-O Nb4 |
R4nk1/6p1/P7/5Nb1/8/2p2p2/8/5K2 b - - | 21 | 5.31 | c2 | c2 Rc8 c1=Q+ Rxc1 Bxc1 a7 g6 Nd6 Bf4 Ne4 |
rnbqkb1r/pppp1ppp/4pn2/8/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq - | 61 | 0.12 | d5 | d5 g3 Bb4+ Bd2 Be7 Bg2 O-O Qc2 c6 O-O |
rnbqkbnr/pp2pppp/8/3p4/3P4/2N5/PP2PPPP/R1BQKBNR b KQkq - | 45 | 0.17 | Nf6 | Nf6 Bf4 Nc6 e3 Bf5 Qb3 Na5 Bb5+ Bd7 Qc2 |
8/8/5pk1/6pp/3P4/1r4P1/2R2K1P/8 w - - | 47 | 0.00 | Rd2 | Rd2 Kf5 Kg2 Rb6 Kf3 Ra6 Ke3 Ra3+ Rd3 Ra8 |
r1bq1rk1/pppnppbp/3p1npB/8/3PP3/5P2/PPPQ2PP/RN2KBNR w KQ - | 27 | 0.58 | Nc3 | Nc3 Bxh6 Qxh6 c5 Nge2 b5 h4 b4 Nd5 e6 |
8/8/6p1/8/4N1P1/6k1/8/6K1 b - - | 37 | 0.00 | Kxg4 | Kxg4 Kg2 Kf4 Nf2 g5 Nd3+ Kf5 Kf3 Ke6 Kg3 |
4k3/6p1/6N1/5K2/4N3/8/8/8 w - - | 65 | M22 | Ke6 | Ke6 Kd8 Kd6 Kc8 Kc6 Kd8 Ng5 Ke8 Kd6 Kd8 |
2r1r1k1/5p2/6R1/4NQp1/P7/1q5P/5PP1/4R1K1 b - - | 92 | M15 | fxg6 | fxg6 Qxg6+ Kh8 Qh5+ Kg8 Qxg5+ Kh7 Qg6+ Kh8 Re4 |
1q2r2k/3n1Qbp/4p1p1/3bN3/1p4P1/1P5P/rB4BK/2RR4 w - - | 28 | -10.38 | Rc2 | Rc2 Nxe5 Qxe8+ Qxe8 Rcd2 Bxg2 Rd8 Bc6 Rxe8+ Bxe8 |
3r4/1p4k1/p1bPR3/5p2/2B2P1p/8/PP4P1/4K3 w - - | 33 | 2.67 | Kf2 | Kf2 a5 a3 Bd7 Re7+ Kg6 Bb3 b5 Bf7+ Kf6 |
7r/p1q1kp2/2p1pp2/2p2B2/8/8/PPPP3P/R1BQR1rK w - - | 78 | M-6 | Kxg1 | Kxg1 Qxh2+ Kf1 Qf4+ Kg1 Qg3+ Kf1 Rh1+ Ke2 Rh2+ |
rnbqkbnr/pp1ppppp/8/2p5/4P3/2P5/PP1P1PPP/RNBQKBNR b KQkq - | 54 | 0.07 | Nf6 | Nf6 e5 Nd5 Nf3 Nc6 Bc4 Nb6 Bb3 d6 exd6 |
3r4/4Rbk1/3P4/pp3p2/5P1p/P2B4/1P3KP1/8 w - - | 33 | 5.04 | Bxb5 | Bxb5 Kf6 Rc7 Rxd6 Rc6 Rxc6 Bxc6 Bb3 Kg1 Ke6 |
3r4/4R1k1/3P4/pp1b1p2/5P1p/P2B4/1P3KP1/8 b - - | 43 | 3.29 | Kf6 | Kf6 Bxb5 Be6 Ra7 Rxd6 Ke3 Rd1 Rxa5 Re1+ Kd2 |
3r4/1p3k2/p1bPR3/5p2/2B2P1p/8/PP4P1/4K3 b - - | 36 | 1.32 | b5 | b5 Bb3 a5 a3 a4 Ba2 Bd7 Rh6+ Kg7 Rxh4 |
7r/1p6/p1bP2k1/4Rp2/5P1p/8/PP4P1/3K1B2 w - - | 32 | 1.12 | Bd3 | Bd3 Bd7 Ke2 Rd8 b3 Bc8 Rd5 Be6 Rd4 b5 |
3qrk2/p1r2pp1/1p2pb2/nP1bN2Q/3PN3/P6R/5PPP/R5K1 w - - | 99 | M3 | Qxf7+ | Qxf7+ Rxf7 Ng6+ Kg8 Rh8# |
2kr1b1r/pp1npppp/2p1bn2/7q/5B2/2NB1Q1P/PPP1N1P1/2KR3R w - - | 99 | M2 | Qxc6+ | Qxc6+ bxc6 Ba6# |
r4n1k/pp2r3/2p1PN1p/3p1P2/8/8/PPPK4/6R1 w - - | 99 | M1 | Rg8# | Rg8# |
r4n1k/pp2r1p1/2p1PN1R/3p1P2/8/8/PPPK4/6R1 b - - | 99 | M1 | gxh6 | gxh6 Rg8# |
rn1qkb1r/1b2pppp/p2p4/1p4P1/3N2Q1/4B3/PPP2P1P/R3KBR1 b Qkq - | 38 | -0.56 | g6 | g6 h4 Bg7 h5 Nc6 O-O-O O-O hxg6 hxg6 f4 |
8/8/2N2k2/8/1p6/p3p3/K7/8 w - - | 50 | 0.00 | Nxb4 | Nxb4 Kf5 Nc2 Ke4 Nxe3 Kxe3 Kxa3 Kf4 Kb4 Kf5 |
2k5/1n3K2/1p2P3/pB6/P7/5r2/5p2/3R4 w - - | 60 | 0.00 | Kg7 | Kg7 Re3 Kf6 Rf3+ Kg6 Re3 Kf6 |
1R6/4qppk/6n1/b2p2Pp/2pP2b1/p1P5/P1B1rPPB/2Q2NK1 w - - | 30 | 1.32 | Be5 | Be5 h4 Qf4 Rxc2 Qxg4 Bd8 Qh5+ Kg8 Qf3 Rb2 |
1R6/4qppk/6n1/b2pB1Pp/2pP2b1/p1P5/P1B1rPP1/2Q2NK1 b - - | 53 | 1.89 | Qe6 | Qe6 Ne3 Bxc3 Bxg6+ Qxg6 Qxc3 Qxg5 Nxd5 Bf5 Nf4 |
rn2k2r/ppp2p1p/4bp2/8/2p1PP2/2N5/PP4PP/R3KB1R b KQkq - | 21 | 0.44 | c6 | c6 f5 Bc8 Bxc4 Nd7 Kf2 Ke7 Be2 Ne5 Rhd1 |
rn2k2r/pp3p1p/2p1bp2/8/2p1PP2/2N5/PP4PP/R3KB1R w KQkq - | 20 | 0.36 | f5 | f5 Bc8 Bxc4 Nd7 Kf2 Ne5 Be2 b6 b3 Ke7 |
5k2/6pp/2B2P2/PPR3r1/3P4/7P/6P1/1b4K1 b - - | 17 | 10.74 | Rxc5 | Rxc5 dxc5 Bd3 a6 gxf6 a7 Bxb5 Bxb5 Kg7 a8=Q |
6k1/3q1pp1/6n1/b2p2Pp/2pP2b1/p1P5/P1BQrPPB/1R3NK1 w - - | 30 | -0.85 | Rb8+ | Rb8+ Kh7 Qc1 Bc7 Bxc7 Qxc7 Ra8 Qe7 f3 Bd7 |
r1b1k2r/pp1n1p1p/2p2p2/5P2/2B1P3/2N5/PP4PP/R3K2R w KQkq - | 20 | 0.36 | Kf2 | Kf2 Ne5 Be2 b6 Rac1 Ke7 b3 Bb7 Rhd1 Rhd8 |
rnbqkb1r/ppp1pppp/5n2/8/2pPP3/2N5/PP3PPP/R1BQKBNR b KQkq - | 38 | -0.16 | e5 | e5 Nf3 exd4 Qxd4 Qxd4 Nxd4 Bc5 Ndb5 Na6 Bf4 |
A dataset of chess positions evaluated with various flavours of Stockfish running within user browsers. Produced by, and for, the Lichess analysis board. Evaluations are formatted as JSON; one position per line.
The schema of a position looks like this:
{
"fen": "8/8/2B2k2/p4p2/5P1p/Pb6/1P3KP1/8 w - -",
"depth": 42,
"evaluation": 5.64,
"best_move": "Kg1",
"best_line": "Kg1 Ke6 Kh2 Kd6 Be8 Kc5 Kh3 Kd6 Bb5 Ke7"
}
fen
: string
, the position FEN only contains pieces, active color, castling rights, and en passant square.depth
: int
, the depth reached by the engine.evaluation
: string
, the evaluation for the given FEN/board state.best_move
: string
, the first move of the best_line, in SAN format.best_line
: string
, the first principal variation for the given highest available depth, in SAN format.