fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2rr2k1/ppbqnppp/2n1p3/3p4/1PPP3P/P3RNP1/1B3P2/1BRQ2K1 w - - 1 22 | c5 | Are there any open files in this position? | No | files |
r2qkb1r/pppb1ppp/2np1n2/1B2p3/3PP3/2N2N2/PPP2PPP/R1BQK2R w KQkq - 4 6 | O-O | Is the c-file open, semi-open, or closed? | closed | files |
8/4k3/1p3p2/bKpB1p1P/P7/6P1/8/8 b - - 0 43 | h4h5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqkb1r/ppp2ppp/4pn2/8/3P4/5NP1/PPP2P1P/R1BQKB1R b KQkq - 0 7 | Be7 | Are there any open files in this position? | No | files |
2k5/pp6/2p1p3/6p1/PP1P1b2/2P1B1p1/5P1r/5KR1 b - - 0 32 | Kd7 | Does White have any isolated pawns? | Yes: f2 | structure |
2kr2nr/pppb2pp/3p1p2/3N4/2B1P3/P2P1R2/1PPb2PP/2KR4 w - - 0 15 | a5d2 | Is the White king in check? | Yes | check |
r1b2rk1/pp3qpp/2p5/3p2nn/B2Pp3/Q1P1RP1P/PP4P1/R1B2NK1 b - - 0 17 | Bxh3 | Are there any open files in this position? | No | files |
8/8/7k/7p/8/1P3R2/P4RKP/1q6 b - - 18 44 | Qg6+ | Does White have any isolated pawns? | Yes: h2 | structure |
r2q2kr/pp3pp1/2np3p/2bNp3/2B1P3/2P5/PP3PPP/R2Q1RK1 b - - 0 16 | Kh7 | Is the move from g8 to f8 legal? | Yes | legality |
r2qrnk1/pbp2pbp/1p1p1np1/8/2PP4/2N2B1P/PP1N1PPB/R2Q1RK1 b - - 2 13 | Qc8 | Is the move from c7 to h3 legal? | No | legality |
5rk1/6bp/3p4/R2P4/4RP1n/2P5/1P2BK2/6Qq b - - 0 34 | Qxe4 | Is the White king in check? | No | check |
7k/8/6PP/3p1N2/3Pr3/4PK2/8/8 w - - 1 65 | Nd6 | Identify any White knight outposts on the board. | d4, f4 | outposts |
8/5kp1/5pp1/1p1p4/p2P1P2/2P1Nb2/PP3P1P/5K2 w - - 7 34 | Nc2 | What is the material balance in this position? | White is up 1 pawn of material | material |
2rqkb1r/pp1n1ppp/8/3Np3/4PPQ1/8/PB2N1PP/1R2K2R b Kk - 2 14 | exf4 | What piece is on e8? | Black King | occupancy |
r3rk2/pb3p1B/1p1b3p/3p2q1/2pP4/2N1P3/PPQ2P2/2KR3R w - - 0 20 | Rdg1 | Is the move from b2 to b3 legal? | Yes | legality |
5br1/pb1nrk2/5pp1/qppP4/P1p2B2/2P2Q1N/4BPP1/3RK2R b K - 2 20 | Rg7 | What piece is on g6? | Black Pawn | occupancy |
6k1/2qbbpp1/p6p/1p1B4/1P6/PN2P1P1/1Q3P1P/6K1 b - - 0 26 | g2d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
1rr5/3q2pp/4R3/5Q2/3P3k/4P1P1/5P2/5RK1 b - - 0 27 | g2g3 | Is the Black king in check? | Yes | check |
r1b4r/pp4b1/7p/2pN2B1/P1nn4/8/2k3PP/2R2RK1 b - - 1 23 | b1c1 | What is the material balance in this position? | Black is up 7 pawns of material | material |
k2qr3/pp3p1p/1np1P1p1/Q1Np2r1/3P2P1/1R3P2/PP6/1K1R4 b - - 0 32 | fxe6 | Is the Black king in check? | No | check |
r1b2rk1/2p2pp1/p2p1nq1/1p1Pp2p/4PnP1/2P1R2P/PPB2P1N/R2Q1N1K w - - 0 19 | Rg3 | What piece is on c2? | White Bishop | occupancy |
5rk1/p3q2p/1r2p3/3p1p2/1PpP2p1/2P1P1P1/3Q1P1P/R3R1K1 w - - 0 24 | Ra5 | Does White have any passed pawns? | No | structure |
8/pp2Nr1k/2b1p2p/8/8/6Q1/q2r2PP/7K w - - 0 34 | Qg8# | What piece is on d1? | Empty | occupancy |
r3kr2/2pn2pp/p7/1p1Nn3/8/2P3P1/PP3q1P/R1BQ1K1R w q - 0 18 | f6f2 | Is the White king in check? | Yes | check |
8/8/7q/5N2/1Q6/5p2/6k1/3bK1b1 w - - 4 3 | Qg4+ | What is the material balance in this position? | Black is up 4 pawns of material | material |
5k2/5p2/8/7p/P4R2/r6P/5KP1/8 b - - 0 37 | Kg7 | What piece is on d3? | Empty | occupancy |
8/k7/8/1K5p/7P/6P1/2q5/1r2q3 w - - 8 55 | d1b1 | Is the White king in check? | Yes | check |
rnb1kb1r/p1pp1ppp/7q/1B5n/4Pp1N/3P4/PPP3PP/RNBQ1K1R b kq - 2 8 | Qg5 | Identify any White knight outposts on the board. | None | outposts |
2bk3r/2r2pq1/4pN2/3pn2p/2n3p1/P7/1P3PPP/RBBQR2K w - - 0 31 | Ne4 | Is the move from h1 to h1 legal? | No | legality |
r5k1/1N3pp1/4b3/8/6n1/5rP1/2R1R1B1/6K1 b - - 2 38 | Ra1+ | Identify any Black knight outposts on the board. | None | outposts |
r2qkb1r/2ppnppp/bp2p3/n2P2P1/P1P1PP1P/2N1BN2/8/1R1QKB1R w Kkq - 3 8 | h5 | Is the move from c3 to a2 legal? | Yes | legality |
5rk1/1p3p2/4p1pq/p2pP2P/4r3/2P5/PPKB2R1/8 w - - 0 32 | Bxh6 | What piece is on c7? | Empty | occupancy |
8/1p1Np1k1/2ppB2r/p1P3p1/8/1P1K2P1/P7/8 w - - 3 45 | Bg4 | Is the f-file open, semi-open, or closed? | open | files |
2r2rk1/pbq2ppp/1p6/n2B4/4PQ2/5N2/P4PPP/3RR1K1 w - - 3 18 | Qf5 | Does Black have any isolated pawns? | No | structure |
4r1k1/5pbp/6p1/p7/1p3P2/1P4PP/P7/2Kr4 w - - 0 40 | e2d1r | Is the White king in check? | Yes | check |
r1q2bk1/1b1n1pp1/pP6/4n3/2NBPQ2/1P3P2/2P1B2P/1K4R1 b - - 0 30 | Ng6 | What piece is on b5? | Empty | occupancy |
1r3rnk/1p1qb2p/3p2p1/p1pPpp2/2P1P1P1/2N1BP1P/PP1Q3K/5RR1 b - - 4 26 | Rf7 | Does White have any isolated pawns? | No | structure |
r1bq1rk1/1pp2ppp/1p6/8/B2nN3/8/PPPP1PPP/R1BQK2R b KQ - 0 11 | Rxa4 | What is the material balance in this position? | White is up 4 pawns of material | material |
4rbk1/qb3pp1/7p/1p1pP3/1PnN1P1B/r4BP1/7P/1QRR3K b - - 3 31 | Rxf3 | Identify any White knight outposts on the board. | d6 | outposts |
r7/1p3p2/p2R3k/2p2p1p/5PrR/8/PP3P1P/7K b - - 4 28 | d1d6 | Is the Black king in check? | Yes | check |
r3b1k1/pp1rqppp/2p1pn2/2P1Q3/2NP4/6P1/PP3PBP/3RR1K1 w - - 7 19 | Nd6 | What piece is on e5? | White Queen | occupancy |
8/1r6/p2p3k/P2Ppp2/5p2/3P1P2/3K4/2R5 w - - 0 35 | Rc6 | Is the c-file open, semi-open, or closed? | open | files |
r3kb1r/ppp1pppp/3q1n2/3P1b2/1n6/2N2N2/PPP1BPPP/R1BQK2R w KQkq - 1 8 | Nd4 | Identify any Black knight outposts on the board. | None | outposts |
5rk1/4qpb1/4b2p/1Bp1p1p1/1P2P3/2P2PQ1/4N2N/R2r2K1 w - - 0 29 | d8d1 | Is the White king in check? | Yes | check |
8/p7/2p5/3pR3/2PB3p/N1Pk1r1P/P7/6K1 b - - 0 38 | b3c4 | Identify any Black knight outposts on the board. | c4, e4 | outposts |
2r3k1/2q2p1p/1p2p1p1/5n2/1Q6/P2RPBP1/5P1P/6K1 w - - 0 28 | Kg2 | Identify any White knight outposts on the board. | b4 | outposts |
r2qr3/1bpkb1pp/p1n2n2/2P1p3/P7/1B3Q2/1P1N1PPP/R1B1R1K1 w - - 1 18 | Qf5# | Does Black have any isolated pawns? | Yes: a6, c7, e5 | structure |
rn1qkb1r/pb1p1ppp/1p6/2pn4/8/5NP1/PPQ1PPBP/RNB1K2R w KQkq - 0 9 | O-O | Is the White king in check? | No | check |
2k4r/1pB2pp1/1P2bnnp/1q1p4/2N3P1/3PP2P/5QB1/R3R1K1 w - - 1 6 | Nd6+ | Is the c-file open, semi-open, or closed? | open | files |
r5k1/p5pp/2pq1r2/3p4/NP2p1P1/P1P2p1P/5P2/R4QK1 w - - 1 23 | f8f6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
3k1n2/2n3p1/p2p1p1p/Pp1PpB1P/1P2PP2/4NKP1/8/8 w - - 11 46 | Bg6 | What piece is on g3? | White Pawn | occupancy |
rnb2rk1/pp2nppp/4p3/2q1P3/2B5/2N2N2/PPQ2PPP/R3K2R w KQ - 0 12 | Bd3 | Is the move from c2 to h1 legal? | No | legality |
rnQ2bnr/pp2kppp/q7/3pP3/1B6/8/PPP2PPP/R3K1NR b KQ - 3 13 | d2b4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2q3r/5ppp/p2Q4/1p2P1k1/8/1P3R2/P4PPP/5R1K w - - 5 28 | Qb4 | Identify any White knight outposts on the board. | d6 | outposts |
1k2r3/ppp3p1/8/3P4/P1PB4/1K3r1P/1P6/6R1 w - - 0 36 | f7f3 | Is the White king in check? | Yes | check |
8/3b1knp/2pp4/1p3pP1/3N1P1P/P2BK3/1P6/8 w - - 2 33 | h5 | Does Black have any passed pawns? | Yes: d6 | structure |
rnbqk2r/pp1p1ppp/4pn2/8/1bPp4/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 0 6 | Nxd4 | What piece is on g1? | Empty | occupancy |
r1bqkb1r/pp3p2/2p1p2p/6p1/3P2n1/2N1P1B1/PPQ2PPP/R3KB1R w KQkq - 0 12 | h3 | Is the move from d4 to e4 legal? | No | legality |
r3kb1r/p3Pp2/1n3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b b kq - 0 16 | a6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
4r3/8/4p1kP/pp1n4/2p3P1/P7/1P1B4/1K2R3 w - - 7 40 | Re5 | What piece is on f4? | Empty | occupancy |
rnb1kb1r/3ppppp/5n2/qBpP4/8/4P3/PP3PPP/RNBQK1NR w KQkq - 1 7 | Nc3 | Is the move from g2 to b4 legal? | No | legality |
r1bqk2r/pp1n1ppp/2p1pn2/3p4/1bPP4/1P2PN2/PB1N1PPP/R2QKB1R b KQkq - 4 7 | Ne4 | Does Black have any passed pawns? | No | structure |
rnb2rk1/1p3ppp/p3pB1Q/4PN2/2B1n3/2N5/P1P3PP/5RqK w - - 8 20 | Kxg1 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/pppbnpbp/3p1np1/3Pp3/4P3/2N1B3/PPP1BPPP/R2QNRK1 b - - 2 11 | Ne8 | Is the f-file open, semi-open, or closed? | closed | files |
5r2/pN2k2R/2p1p3/8/2P5/1P1p3P/P5P1/1n4K1 b - - 1 37 | h5h7 | Is the Black king in check? | Yes | check |
r2qk2r/ppp2pbp/2npbnp1/4p3/2B1P3/3P1Q1P/PPP1NPP1/RNB1K2R w KQkq - 1 8 | Bb3 | Is the move from e1 to d1 legal? | Yes | legality |
3r2k1/5ppp/8/4N3/2Q2P2/1PN5/q1K3bP/4R3 w - - 0 30 | a3a2 | Is the White king in check? | Yes | check |
rnb1k1nr/ppp2ppp/3b4/8/2B2R2/2N2N2/PPPP1PPP/R1B1Q1K1 b kq - 2 10 | d1e1 | Is the White king in check? | No | check |
r1bqr2k/ppp1pQb1/3p1n2/6N1/3P1B2/4P3/PPPN1PP1/R3K3 w Q - 1 14 | O-O-O | What piece is on b8? | Empty | occupancy |
r1bq1b1r/pp4pp/2p5/2kn4/2BnQB2/2N5/PP3PPP/R5K1 w - - 4 15 | Bb3 | Is the move from f4 to e8 legal? | No | legality |
3B2k1/5p1p/p4P1b/2p5/4r3/1P1p2PP/P7/1R4K1 b - - 0 1 | Bc1 | Identify any Black knight outposts on the board. | d4 | outposts |
r1bqkb1r/pp3pp1/2nppn1p/8/3NP1PP/2N5/PPP2P2/R1BQKB1R w KQkq - 1 8 | Nb3 | Is the move from d1 to d2 legal? | Yes | legality |
8/5p2/1N2n1p1/4k1p1/4P3/5P1P/4r1PK/3R4 b - - 2 57 | Nf4 | Is the Black king in check? | No | check |
r1b2rk1/ppqnbppp/4p3/4p3/3P1B2/1QPB1N2/P4PPP/R4RK1 w - - 0 13 | dxe5 | Is the move from f3 to c2 legal? | No | legality |
r4rk1/pp4b1/2p2PQp/8/7R/4q1PP/PP4K1/5R2 b - - 0 32 | Rf7 | Identify any White knight outposts on the board. | f4, h4 | outposts |
1r3rk1/1bq2pbp/p1nppnp1/p1p3B1/2P1P3/RNNP4/1P1QBPPP/5RK1 b - - 7 17 | Ba8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r4rk1/pp3ppp/2p5/2bpq2b/6P1/7P/PP1BPPBK/2RQ1R2 w - - 0 16 | f4 | Are there any open files in this position? | No | files |
8/3n1knq/1p1p1p2/p1pPpP1p/P1P1P2K/2P1BP2/4B3/6Q1 w - - 29 52 | Bf1 | Is the move from g1 to f2 legal? | Yes | legality |
4q3/1p4pk/p4pbp/P1Bp2n1/1P6/4QPPB/4PK1P/8 w - - 1 37 | Bg2 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1bqkb1r/pp1npppp/2n5/2ppP3/8/2PB1N2/PP1P1PPP/RNBQK2R w KQkq - 1 6 | Bb5 | What piece is on a3? | Empty | occupancy |
rnb2rk1/ppp1b1pp/3pp3/7q/2PPn3/5NP1/PP3PBP/R1BQR1K1 w - - 0 11 | Rxe4 | Does Black have any isolated pawns? | No | structure |
7k/1p2R2p/2b4P/r7/5Pp1/6P1/3KN3/8 b - - 0 32 | Rd5+ | Is the d-file open, semi-open, or closed? | open | files |
5rk1/1q4p1/1r1p3p/p1p1p1b1/2P1QnP1/1PP4P/P2N1P2/R1BK3R b - - 0 25 | d5 | Identify any White knight outposts on the board. | a4 | outposts |
r2q1rk1/1b2bppp/ppn1pn2/8/3P4/P1NQ1N2/1PB2PPP/R1B1R1K1 w - - 0 14 | d5 | Identify any Black knight outposts on the board. | d5 | outposts |
4k2r/p2bbp1p/4pp2/1N6/2rRNq1B/2p5/PP3PPP/1K3B1R w k - 0 19 | Bxc4 | Are there any open files in this position? | Yes: d | files |
1rr2n2/2q3kp/1p4p1/pB1p1pB1/P1pP3P/2P5/1P1Q1PP1/4R1K1 w - - 0 2 | Re7+ | Identify any Black knight outposts on the board. | None | outposts |
r1bqk1nr/ppppbppp/2n5/8/2BpP3/5N2/PPP2PPP/RNBQK2R w KQkq - 0 5 | c3 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
1k1r2nr/1bp1q1b1/pp2B1pp/4P3/6Q1/2N5/PPPB2PP/2KR1R2 w - - 1 19 | Rf7 | Is the move from c3 to b5 legal? | Yes | legality |
2q3k1/p4ppp/1p2p3/n3P3/Q2P1n2/B4P2/P5PP/5BK1 w - - 0 28 | Ba6 | Does Black have any isolated pawns? | No | structure |
2bq1rk1/3n1p1p/2p3p1/8/1p1QPPn1/1P5P/r3N1P1/1N1RKB1R b K - 0 18 | Qh4+ | What piece is on e8? | Empty | occupancy |
8/4k2p/1R2pp2/4n3/2P4P/1PK2b2/P7/8 w - - 0 37 | a4 | What piece is on f6? | Black Pawn | occupancy |
3R2k1/6p1/7p/p1p3b1/6P1/1PP4r/8/4K3 b - - 1 38 | Bxd8 | Is the Black king in check? | Yes | check |
r1r3k1/1pqbpp2/p1np1bp1/7p/4PP1P/1NP1B1Q1/PP4P1/1K1R1B1R w - - 0 18 | Be2 | Are there any open files in this position? | No | files |
r4rk1/pp1b1ppp/3bpq1B/2p1N3/3P2Q1/2P5/PP3PPP/R3K2R w KQ - 2 13 | Bg5 | What is the material balance in this position? | Equal | material |
1r3rk1/p4ppp/3q4/3p2b1/3Pb3/1BP5/P2NQPPP/R4RK1 b - - 6 18 | b1d2 | What is the material balance in this position? | White is up 1 pawn of material | material |
7k/pp4pp/2p3b1/8/P1Q1p1P1/4N1qP/2P2r2/6KR w - - 2 40 | h4g3 | Is the White king in check? | Yes | check |
2r2rk1/p4p1p/1p2p1p1/4Q3/3P2RP/2q5/5PP1/5RK1 b - - 1 23 | g3e5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1b1k1r1/1p1n1pqp/p3p3/3NP3/2BN1Q2/1n6/P1P2RPP/6K1 w q - 0 21 | Nc7+ | Is the move from d4 to e2 legal? | Yes | legality |
2kr3r/pb1pnpp1/1pn2q2/2p1p3/2P1P2p/P1PPQ2N/4BPPP/R1B2RK1 w - - 6 13 | Bd2 | Does Black have any passed pawns? | No | structure |
R4k2/5p1p/6p1/2pPr3/2K1P3/8/8/8 b - - 3 53 | Ke7 | Is the Black king in check? | Yes | check |
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