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fen
string
turn
string
best_move_uci
string
best_move_san
string
score_cp
int64
score_mate
int64
depth
null
time_s
float64
num_legal_moves
int64
3qkb1r/rpp1pp2/2np2pn/p2P3N/1P1Q4/P2P1PP1/2P4P/RNB1KB1R w Q - 0 14
w
d4h8
Qxh8
782
null
null
1
47
1n4br/p1prb3/k3p2p/3p3p/pqPPpP2/4K1PN/6BP/R4R2 b - - 3 33
b
b4c3
Qc3+
null
6
null
1
36
8/2rknpb1/2r1b3/np1p3p/2p1pP2/P1PP1P1P/2K1QNB1/RN3R2 w - - 1 31
w
f3e4
fxe4
242
null
null
1
28
4k3/1b6/1pn2q1n/p5Nr/2P1P1P1/P7/1P1B2NP/1R3BKR w - - 3 41
w
g4h5
gxh5
-143
null
null
1
30
4k3/5nr1/1p1p1r2/p2Qpp2/1P4P1/2P1P1K1/P7/R1B3NR w - - 1 37
w
d5a8
Qa8+
614
null
null
1
46
1n5r/rp2kpb1/4Bn1p/pNp1P3/3RP2P/2P2P2/7B/2KR4 w - - 2 39
w
e5f6
exf6+
526
null
null
1
40
r2qkb1r/2pnp1pp/3p3n/1p2N1P1/1p2Bp1P/3P4/P1P1PP2/RNBQK1R1 b Qkq - 1 12
b
d7e5
Nxe5
-398
null
null
1
28
2r1kb2/5pr1/ppN2Q2/3q4/4pPpN/2K1R1n1/p1PP2BP/R1B5 b - - 1 30
b
c8c6
Rxc6+
300
null
null
1
39
1nb5/4kpp1/2P2br1/4N2p/1pP1PB1P/Q7/4R1P1/K4BR1 b - - 1 39
b
b4a3
bxa3
-478
null
null
1
24
2bq2r1/r2k3B/1pp4b/p2p2P1/2Pn4/PP5P/7R/RNBQK3 b Q - 1 26
b
d8e7
Qe7+
408
null
null
1
37
4kb1r/Bbpp4/1rn2q1p/Pp1p1p2/P4Pp1/3P2PN/1R2P2P/3KNBR1 b - - 4 24
b
f6b2
Qxb2
970
null
null
1
42
8/1b1pN1rk/5p1n/p1nPpPpr/1P2P3/q7/1RPNB2P/4R2K b - - 1 34
b
h5h2
Rxh2+
606
null
null
1
39
1rb2b1B/p1pkp2p/3q3n/3p1ppP/2pP1P2/4P3/nP1K2P1/RNQ2BNR w - - 0 17
w
a1a2
Rxa2
338
null
null
1
30
1r1k1br1/3p2n1/1pqppp2/p3n3/P3P1pR/1PPP2P1/8/RNB2KN1 w - - 3 30
w
c1e3
Be3
-773
null
null
1
29
r5r1/5k2/5pqp/pNn1p3/4P1p1/1P1B3b/Pb1PKPPP/R2N3R b - - 4 32
b
c5d3
Nxd3
833
null
null
1
43
rnb1kb1r/1pp2p2/4pqp1/pPNp1n1p/2P3P1/P7/R1QPPP1P/2B1KBNR b Kkq - 0 11
b
f5d4
Nd4
392
null
null
1
43
rn2k3/p1b5/3Pb1r1/1Pp2ppp/1P3q2/N4PPP/P1QP4/2RBK1NR w - - 0 26
w
g3f4
gxf4
704
null
null
1
29
r1b1nbnq/4k3/Q2pp3/2p2ppN/2B2Pp1/PPP1PR2/R2P2r1/1NB2K2 w - - 0 25
w
a6a8
Qxa8
-491
null
null
1
33
1n4n1/3k4/r4p2/1b4p1/pbpPP2r/1Qq2pp1/1P1NN3/R1B1K2R w Q - 2 25
w
b3c3
Qxc3
-937
null
null
1
26
2r3nr/p1k1bb2/n1pp2pp/1p2Pp2/1PQP1K2/2P3PN/P1N1P1P1/2B1RB1R w - - 3 21
w
c4f7
Qxf7
812
null
null
1
31
1n4rr/N2k3p/1Pn5/p3pp2/P1B1P2p/b5P1/3PbK2/R1B1R3 b - - 4 37
b
e2c4
Bxc4
412
null
null
1
39
r1bq1bnr/1pp3k1/p1np1p2/4p1pp/P3P3/N1PP4/1P1Q1PPP/1RBK1BNR b - - 1 10
b
h5h4
h4
137
null
null
1
32
r1bq3r/1pp1kn1P/p2p3b/4ppp1/P1n1P3/2PQ3N/1P1P1PBP/RNB1K2R w - - 2 16
w
d3c4
Qxc4
149
null
null
1
29
r1b2b2/4Bk1p/p2pn1rn/1p4P1/1P3pP1/NR1P1P1B/PQ2P3/4K1qR w K - 0 22
w
h1g1
Rxg1
429
null
null
1
3
2b2q2/p2n1k1r/2p1r2P/3pB1pp/P1pp2N1/RP3B1N/4PP1P/1K2Q2R b - - 0 27
b
d7e5
Nxe5
62
null
null
1
40
5b1r/1N2k2p/4p3/5pp1/2pP2P1/K1Pq2P1/P2P1P2/1RBN2R1 b - - 3 36
b
d3b1
Qxb1
null
10
null
1
23
5bNr/rpp2kpp/n2p1p2/pP3b2/1BP2P1P/8/P1q1PKP1/1R1Q1BNR w - - 2 15
w
b5b6
b6
-145
null
null
1
38
b3kb2/3p4/rn4p1/1pp1p3/2BPPn2/p2NBK2/PPP5/1R1QR2r w - - 0 39
w
c4f7
Bf7+
497
null
null
1
36
1rb4r/1p5p/3k4/2p5/PPPPpB2/2Q4N/5KPR/R4B2 b - - 1 26
b
d6e7
Ke7
-1,108
null
null
1
4
rnbq2nr/p1pkpp2/1p1p3b/6p1/2B1P1Pp/2N4P/PPPP1P1N/1RBQ1RK1 w - - 0 10
w
c4f7
Bxf7
330
null
null
1
29
r2qkb1r/pbpp4/2n3N1/1p2p3/1PP3np/B5R1/P2PPP1P/RN1QKB2 w Qkq - 1 14
w
g3g4
Rxg4
338
null
null
1
33
1n2k1nr/3qb3/r4pp1/p1p1PbPp/3Q4/2PP3P/P2B1P2/RN2K1NR w KQk - 1 18
w
d4d7
Qxd7+
-284
null
null
1
31
2r2b2/2n1k2p/2p2P2/p1P1p2p/Pp5P/1P2P3/1B3P2/RN2K1NR b KQ - 0 22
b
e7f6
Kxf6
-778
null
null
1
6
4k1n1/2p2pb1/5p2/p1rp1PPp/R1p4P/1P1bK2N/7Q/1N3B2 b - - 3 27
b
d3f1
Bxf1
-308
null
null
1
22
3rk2r/p3Bpp1/2qppn2/7p/pb1P2nP/N1P2PP1/4K3/RQ3B1R b k - 0 28
b
c6c3
Qxc3
703
null
null
1
44
2bqkb1r/r2p2pp/2n1pn2/ppp2p2/P3N3/1P4PN/2PPPP1P/R1BQKB1R w Kk - 0 9
w
a4b5
axb5
92
null
null
1
25
rn4n1/2pp1qkr/8/pPb2Ppp/7P/1RNP4/2PQ2bR/2B1KBN1 w - - 0 22
w
f1g2
Bxg2
546
null
null
1
34
r1bqkb1r/1ppp2pp/2n1Bn2/p5N1/1PP1p3/B3P3/PQ1P1PPP/RN2K1R1 b Q - 1 12
b
d7e6
dxe6
510
null
null
1
30
r1bk1bnr/ppqppp2/5p2/2n4p/1QpP1P1P/P3P3/1PP1N1P1/R1B1KBR1 b Q - 2 15
b
c5e4
Ne4
501
null
null
1
30
1nbq1rk1/1ppppn1p/B6b/p4pp1/3PP3/1Pr2PPP/P1P2K2/RN2Q1NR w - - 2 14
w
b1c3
Nxc3
-356
null
null
1
30
4k1n1/rp4p1/3rPb2/PN2p2p/1P1pP1P1/3B3b/1BK4P/2R2R2 w - - 3 39
w
b5d6
Nxd6+
741
null
null
1
33
rn1q1bnr/2p1p1pp/bpk2p2/p7/P3pPP1/1P5P/R1PP2B1/1NBQ1KNR w - - 2 12
w
c2c4
c4
120
null
null
1
6
2bqkb1r/1pppn2p/2n2pp1/4p1P1/pP6/P1P1PN2/3PBP1P/RNBQK2R b KQk - 2 9
b
e5e4
e4
-321
null
null
1
21
3r1r2/p1p1p3/3pn3/1P3kp1/p7/2N1P1P1/1P2BKN1/Q5R1 w - - 2 35
w
a1b1
Qb1+
841
null
null
1
38
r1b2qnr/p1p1k1p1/1p5p/2bp1pN1/3PpB2/P1P2PP1/1PQ1BK1P/RN5R b - - 2 14
b
c5d6
Bd6
-204
null
null
1
28
rn2k3/3bp1b1/p4nP1/1pPP2N1/6p1/1P1R4/PB1N1qP1/3K1B2 b - - 2 36
b
f2f5
Qf5
557
null
null
1
35
1n2k1nr/6p1/2rbqp1p/pppNpbP1/PB1P4/1P2KP1N/2P1P2P/RQ3BR1 w k - 0 20
w
e3f2
Kf2
-456
null
null
1
37
5r1r/8/2p1k3/p3Pp1b/Pp1p3q/2NP1P2/6K1/B2R1B2 b - - 3 36
b
f8g8
Rfg8#
null
1
null
1
38
5k1r/p4pbp/q2N2pn/1pPPP3/3pP3/6PP/3R1BBR/1NQKn3 w - - 7 32
w
d1e1
Kxe1
850
null
null
1
34
4kb2/rb5r/2R1p1qn/pp1N3p/1P2P2N/P2p4/Q1P1B3/R2K4 w - - 0 41
w
h4g6
Nxg6
573
null
null
1
40
rnbqkbr1/1pp2p2/p2p3p/4p1p1/2B1n3/N2P2P1/PPP1PP1P/1RBQ1KNR w q - 0 9
w
d3e4
dxe4
346
null
null
1
29
5bn1/4k3/1pP2pr1/4p1pP/2BP2P1/p1N2r2/6K1/Qb2R3 b - - 1 40
b
b1a2
Ba2
-721
null
null
1
26
r3kb2/3q3r/p2pppPB/P1p2n1P/1npP3P/N5R1/QP2P3/R2NKB1b b Q - 6 22
b
h7h6
Rxh6
529
null
null
1
47
r3k2r/2p1bppp/bp1p4/nP1p2q1/3P4/P3PKPP/1Rp1BP2/1NB3R1 b - - 0 20
b
c2b1r
cxb1=R
884
null
null
1
41
1n2qb2/n2rk3/3p1p2/p1p3Bp/Pp4P1/1P1P1b1B/2K1PP1P/R4R2 w - - 9 34
w
e2f3
exf3
-573
null
null
1
30
rnb2bnr/3pk1p1/p1pqB2p/p1P2p2/PP2p1P1/R2P4/4PP1P/1NB2KNR b - - 1 18
b
d6e6
Qxe6
723
null
null
1
27
r2qkbnB/2p1p3/p2p1ppp/np6/PP2P1P1/1N3P2/2PPQ2P/RN2KB1R b KQq - 2 11
b
a5b3
Nxb3
-664
null
null
1
22
2rk2nr/pb1p1p2/Pp1Qp1p1/6P1/R4P2/2p1P2p/BB1PN3/1Nn2K1R b - - 0 27
b
b7g2
Bg2+
-486
null
null
1
34
rnbqk1r1/pp2Npp1/3pp3/2p4p/3P3N/PP3P2/2P1P1PP/R1BQKB1n b q - 0 11
b
d8e7
Qxe7
391
null
null
1
28
rnbq1b1r/pp2k1pp/2p2p1n/3pp3/1P6/P3P2N/2PP1PPP/RNBQKBR1 b - - 3 7
b
e7e8
Ke8
136
null
null
1
33
r1B5/5kr1/pp3b2/5pPp/6P1/1n1Pp1P1/1RP1P1B1/1KBQ2R1 b - - 9 40
b
f6b2
Bxb2
-826
null
null
1
31
rnb1k1nr/ppp1b2p/1Q1pp1p1/4qp2/8/2PP1P2/PP1NP1PP/R1B1KBNR b kq - 5 8
b
a7b6
axb6
750
null
null
1
40
1r1nNb2/2p1kr2/pp2q2n/5pNp/2PP3P/4P1Pb/1P2KP2/R1B2B2 w - - 2 24
w
g5e6
Nxe6
-615
null
null
1
32
2k1b1n1/7r/2p1pp1b/1pP4p/4P1PN/rP3p1P/PB5Q/4K1NR b - - 5 38
b
a3a2
Rxa2
-294
null
null
1
34
rnbk1bn1/ppN1ppp1/3p1r2/6P1/2PP1P1p/2B5/2P1P1BP/q1RQK1NR b K - 6 16
b
a1c3
Qxc3+
395
null
null
1
34
5b2/6p1/p1p1P1kr/nr1P4/1p2Np2/BP1K4/1Q2B1q1/8 w - - 0 40
w
e2h5
Bh5+
-317
null
null
1
31
rn2qbn1/p2kp3/b4p2/1Npp3r/1p3K1p/P3P2N/1PPP2B1/R1BQR3 b - - 4 18
b
h5f5
Rf5+
641
null
null
1
28
1nk4r/prp1q2p/p1b1pp2/b2pPn2/3P1B2/2P1NP2/P1R1BKPP/6NR b - - 6 26
b
f5e3
Nxe3
740
null
null
1
40
r2qk1nr/2ppP3/n6p/ppN1ppp1/4P2Q/1bPP2P1/1P5P/R1B1KBNR b KQkq - 7 17
b
g8e7
Nxe7
-105
null
null
1
32
rn2k1nr/7p/3p2pb/p1p2P2/N3P3/RP1b2BP/2P1PN2/3QKB1R w K - 0 22
w
f2d3
Nxd3
843
null
null
1
31
6nr/r2k4/b4b2/2QppPpP/2p2q2/p1PB4/1R1P4/2BK1R2 w - - 0 32
w
c5a7
Qxa7+
1,078
null
null
1
42
3rkbn1/p1q1ppp1/n1pp2rB/1p3b1p/2PP2P1/P7/1PQNPP1P/R3KBNR b K - 1 12
b
f5c2
Bxc2
655
null
null
1
38
6kr/2n3Pp/2brpB2/1P1p4/pP1pP3/P5pP/5RB1/3KR2N w - - 5 40
w
g7h8q
gxh8=Q+
null
3
null
1
35
5br1/2np4/1r6/1p1kp1Np/3P2P1/1Np5/P3R3/1RB3K1 b - - 0 38
b
e5d4
exd4
37
null
null
1
34
5knr/rbN1b2p/pq2p3/2p2pp1/PpP3Nn/1P4PB/3PPP1P/R1BQK2R b - - 0 23
b
b6c7
Qxc7
512
null
null
1
30
1r2kbr1/p5p1/2bp1q1Q/n3P3/P5P1/p1P1P2P/1P2N3/2BK1N1R b - - 3 33
b
f6h6
Qxh6
940
null
null
1
50
r2k1bnr/1ppb1qpp/3Ppp2/p4N2/Pn4P1/2P2K1P/1P1P1P2/RNBQ1B1R b - - 2 12
b
d7c6
Bc6+
541
null
null
1
36
1nb3nr/2rNp3/ppppk3/7p/PP2p2p/3P4/1bPQ4/R1B1KBq1 b Q - 1 25
b
b2c1
Bxc1
934
null
null
1
42
1rbk3r/2pn1nbp/p7/1pqpp3/P1PPPpPp/1P6/R2BKPB1/1N4R1 w - - 0 26
w
d4c5
dxc5
-556
null
null
1
37
1nbqk1n1/8/1r3ppr/2p1p2p/p2Pp3/2P4P/Rb3PPR/1NB1K1N1 w - - 0 18
w
c1h6
Bxh6
-1,014
null
null
1
28
6r1/1b2bkpp/1p2p2n/P1p2pP1/2p5/p2PPNBB/P4R1P/2K1N2R w - - 2 24
w
g5h6
gxh6
716
null
null
1
36
rn2kbnr/p5pp/bqpppp2/1p6/4P1QP/1P5N/P1PP1PP1/RNB1KB1R w KQkq - 2 8
w
g4e6
Qxe6+
249
null
null
1
38
2r3n1/p1pk2qr/1P3b1p/3Pp1pn/1P1P1pbP/P1Q2P1R/3N2B1/R1B1K1N1 w - - 7 26
w
c3c6
Qc6+
411
null
null
1
36
rnb2b1r/1B2pkp1/1p1p1p2/2pn3p/1P2q1P1/P6N/2PPNP1P/R1BQK1R1 b Q - 1 13
b
c8b7
Bxb7
485
null
null
1
52
2qk1b1r/rb1npnpp/pppp4/1N3pN1/PP3P2/6P1/R1PPPK1P/2BQ1B1R b - - 0 13
b
f7g5
Nxg5
284
null
null
1
24
rn3b1r/4ppp1/p1P4p/1p1pk3/bPR1N2q/B7/P2PPPPN/4KBR1 b - - 1 23
b
h4e4
Qxe4
441
null
null
1
32
1r1q1knr/nb2p3/2p3pb/3p2pp/p1p4P/P2P2P1/1P2PPBR/RN2K1N1 w Q - 4 21
w
h4g5
hxg5
-870
null
null
1
26
1nbq2nr/2rpk1b1/1p3p2/2p1B1pp/p7/PP1PPN2/2PN1PPP/R2QKB1R w KQ - 1 15
w
e5c7
Bxc7
328
null
null
1
34
rnq2rk1/p5bp/b2ppPpn/7P/2p5/1pN4R/PQ1PNPP1/R1B1KB2 w Q - 2 16
w
f6g7
fxg7
454
null
null
1
35
rn3b1r/2q2pp1/p1pp2kB/1P1n1b2/2pP3P/P2Q1pPR/2K1PP2/RN3B2 w - - 2 22
w
h4h5
h5+
-538
null
null
1
27
r4r2/p2k4/2p5/1n3NpP/1PpbR3/2B1P2q/P4PB1/R3K3 b - - 3 40
b
d4c3
Bxc3+
833
null
null
1
42
1n1q1bnr/r2bp1B1/1p6/p2p2k1/2P3p1/PP1ppNP1/5PBR/RN2K3 b - - 5 28
b
g4f3
gxf3
736
null
null
1
3
r3b1nr/p3k2p/1pn5/4p3/2p5/P1P1PKPB/P4P2/R1BQ2NR w - - 1 21
w
e3e4
e4
669
null
null
1
32
1rbqk1nr/ppp1p2p/2np4/5p1p/3b1P2/3PP1PN/PPPN3P/R1B1KB1R b k - 5 10
b
d4e3
Bxe3
758
null
null
1
29
rn1qkNnr/p3ppp1/1pbp4/2p5/1P6/2N5/P1PPPPPP/R1BQKB1R w KQkq - 1 7
w
f8g6
Ng6
200
null
null
1
27
2r2bn1/pp1kp1pr/2p1b2p/P1np1N1q/1PNPP3/2P3P1/R4P1P/2BQK2R w K - 1 21
w
c4e5
Ne5+
586
null
null
1
52
r1b1k3/2npppb1/5n2/pr4pp/p1PPP1PP/P4P1R/1B2B3/1R2K1N1 w q - 3 31
w
c4b5
cxb5
310
null
null
1
23
r2qk1nr/N1ppb1pp/b3pp2/8/1p1n1PP1/1P5N/P1PPP2P/R1BQKB1R b kq - 0 12
b
a8a7
Rxa7
429
null
null
1
34
1rbq1b1r/pp1p2pp/5pk1/1Np4n/1n1PpPPP/P1P5/RP1QP3/2B1KBNR w K - 0 14
w
g4h5
gxh5+
533
null
null
1
27
5kr1/2p2p1p/b1pp1q1b/5r1P/p1P2N1R/P3p2p/4P3/3R1K2 b - - 1 37
b
f6h4
Qxh4
null
2
null
1
42
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Check out the documentation for more information.

chess-dataset

A dataset of chess positions labeled with the engine's best move.

  • Size: 10000 examples
  • Engine: Stockfish
  • Search time per position: 1.0 s
  • Fields:
    • fen (string): Position FEN
    • turn (string): 'w' or 'b'
    • best_move_uci (string): Best move in UCI notation
    • best_move_san (string): Best move in SAN notation
    • score_cp (int or null): Centipawn score from the side to move's perspective (null if mate)
    • score_mate (int or null): Mate in N from side to move's perspective (positive = delivering mate, negative = getting mated)
    • depth (int or null): Search depth used (null when time-based limit is used)
    • time_s (float or null): Time limit in seconds used (null when depth-based limit is used)
    • num_legal_moves (int): Number of legal moves in the position

Usage

from datasets import load_dataset

ds = load_dataset("aac43t34ty34ty34/chess-dataset")
print(ds)
print(ds["train"][0])

Note: Scores are POV to the side to move.

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