fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1b1k1r1/1p1nbp2/pq2Nn2/4p1p1/2B5/2N3BQ/PPP3PP/2KRR3 b q - 2 18 | g4 | Is the move from e7 to d6 legal? | Yes | legality |
5rk1/2R2p2/3P4/1ppB1bPp/2p5/6P1/PP6/6K1 w - - 2 41 | g6 | Identify any White knight outposts on the board. | f4, f6, h4, h6 | outposts |
r1bqkb1r/pp1n1ppp/2n1p3/2PpP3/5P2/2N5/PPP3PP/R1BQKBNR w KQkq - 1 7 | a3 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn3rk1/1pbq1ppp/2p1b3/p1Pp4/3Pn3/1Q1B1NP1/PP1N1P1P/R1B1R1K1 w - - 2 14 | Qxb7 | Is the move from a2 to h6 legal? | No | legality |
2k5/p1qBn3/1p1p3p/2pPp3/2P1P3/PQP1B1r1/1R6/1R5K b - - 0 26 | Qxd7 | Identify any Black knight outposts on the board. | a5, g5 | outposts |
r3k2N/2p3pp/p1p2P2/3p4/3P4/B2b4/P2NnPPP/R1R3K1 w - - 3 20 | c3e2 | Is the White king in check? | Yes | check |
1r3rk1/7p/b3p1q1/2p1b1PN/4P3/1Pp1B2Q/P7/2KR3R b - - 0 25 | Be2 | Does Black have any passed pawns? | Yes: c3 | structure |
r6r/p1pk3p/p5p1/6p1/4QbPP/q1P1P3/P5P1/3K1R1R w - - 10 22 | exf4 | Is the move from d1 to d3 legal? | No | legality |
r2k3r/pppbnB1p/3p1R2/4q3/4P2Q/2P5/P1P3PP/R6K w - - 5 17 | Qh6 | What piece is on g5? | Empty | occupancy |
2rqbrkn/1p2bp2/p3p3/3pP1p1/P7/1PPB2PN/1B1Q1P2/R3R1K1 w - - 0 26 | Qe2 | Is the h-file open, semi-open, or closed? | open | files |
r2qkb1r/p2B1ppp/5n2/3p4/3Q4/8/PPP2PPP/RNB1K2R b KQkq - 0 11 | b5d7 | Is the Black king in check? | Yes | check |
6b1/1k5P/1n1K4/3p4/4r3/5Q2/8/8 b - - 0 96 | Re6+ | What piece is on a6? | Empty | occupancy |
4kb1r/1b3pp1/p2ppn2/qp2n1B1/3NP3/P1P2P2/2PQ3P/1K1R1BR1 b k - 0 16 | Nxf3 | Identify any Black knight outposts on the board. | a4, c4, c5 | outposts |
r3k2r/p1p2ppp/bbpp4/8/PP2P1n1/2N2N2/2P2qPP/R1BQR1K1 w kq - 0 14 | Kh1 | Identify any Black knight outposts on the board. | e5 | outposts |
r1b1kb1r/pp1n1ppp/2n1p3/q2pP3/NP1p1P2/2P1BN2/P5PP/R2QKB1R b KQkq - 0 10 | Qc7 | What piece is on d5? | Black Pawn | occupancy |
r2r1bk1/pp1nnp1p/2p1b1p1/4p3/2P1P3/BPN3PP/P3NPBK/3R1R2 b - - 4 16 | Nc8 | What is the material balance in this position? | Equal | material |
r2qk2r/p1pN1p2/1p1n4/3Pp3/1b2P1QP/2N5/PP3PP1/R4K1R w - - 1 21 | Nxe5 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
2k3rr/1bnnqp2/1p1p2pB/p1pPp2p/P1P1P2P/N1PB1PP1/3Q4/2KR3R w - - 8 24 | Rdg1 | What is the material balance in this position? | Equal | material |
r5k1/1p2rpp1/2p4p/p2pnP2/3R1BP1/1PP5/P3RK1P/8 w - - 0 26 | Rxe5 | Does Black have any passed pawns? | No | structure |
rnb2rk1/pp3ppp/1qp5/2bPP1B1/2B5/2NP1N2/PPP1QnPP/2KR4 w - - 4 12 | Rf1 | Does Black have any passed pawns? | No | structure |
8/5pkp/5np1/2p5/p4P2/6P1/1B4KP/8 b - - 0 36 | a3 | Is the move from a4 to a3 legal? | Yes | legality |
r1bk4/p7/p1p2Q2/2P1N2p/3PpP2/2P4p/P6K/2B3R1 b - - 0 31 | f7f6 | Is the Black king in check? | Yes | check |
2kr3r/1pp2p2/P2p4/3P2p1/2P1p1p1/4P1P1/P1K3NP/5RNn w - - 0 24 | Rxf7 | Is the a-file open, semi-open, or closed? | semi-open for Black | files |
r3k2r/ppqn1p1p/2p1pnpQ/5b2/3P4/1BN2N2/PPP3PP/R4RK1 w kq - 2 13 | Ng5 | Are there any open files in this position? | No | files |
2r2rk1/3b2b1/pR1p4/3Pnnp1/P3P2p/2p4P/2Q1BNPN/R5K1 b - - 0 28 | Nd4 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/1p3pbp/p2pn1p1/4p2n/P1B1P3/1NN1BP2/1PP1Q1PP/R4RK1 w - - 4 14 | Nd5 | Are there any open files in this position? | No | files |
1k6/2rb4/p2Q1P2/qp1p1p2/3N3P/P1R5/2P3P1/4K3 w - - 7 35 | Qxc7+ | Is the move from e1 to d1 legal? | Yes | legality |
1r4k1/p4pp1/7p/8/P1n2B2/5N1P/5PPK/8 b - - 0 29 | a2a4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r5k1/pb3ppp/2n1p3/2p1N3/2B2P2/8/PP3PPP/3R2K1 b - - 4 18 | Rd8 | Identify any Black knight outposts on the board. | d4, d5 | outposts |
3r1rk1/1b3p1p/pp3Qp1/2b4q/3N4/2N1P3/PP3PPP/2RR2K1 b - - 0 26 | Rd6 | Are there any open files in this position? | Yes: c, d | files |
8/pp5P/6n1/8/3p2P1/1P3k2/P2Bp3/6K1 b - - 0 9 | d3 | Identify any Black knight outposts on the board. | e3 | outposts |
1k1r2nr/1bp1q1b1/pp2B1pp/4P3/6Q1/2N5/PPPB2PP/2KR1R2 w - - 1 19 | Rf7 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
1r5k/5N2/p7/p1p1p3/4P3/2KPP2r/P1P3R1/4n3 b - - 2 36 | d6f7 | Is the Black king in check? | Yes | check |
2r2bk1/1b5p/pn3rp1/1ppPpp2/P3P3/1PN1BP2/1K2B1PP/2R4R b - - 0 22 | bxa4 | What is the material balance in this position? | Equal | material |
r1bqr2k/1p1nbQpp/p1n5/3pP3/3N1P2/1B2B3/PPP3PP/R4RK1 w - - 1 15 | Ne6 | Is the move from d4 to f3 legal? | Yes | legality |
rn1q1rk1/pbp2pp1/1p2pb1p/3p4/2PP4/2N1PN2/PP2BPPP/R2QK2R w KQ - 0 10 | cxd5 | Does Black have any passed pawns? | No | structure |
r6k/1p4pp/p6r/1PQP2q1/2B2nb1/2N3P1/P6P/5RK1 w - - 0 28 | Rxf4 | Is the e-file open, semi-open, or closed? | open | files |
r5k1/p2R3p/1p4p1/8/8/1KP2P2/1P4PP/8 b - - 0 31 | Re8 | Identify any White knight outposts on the board. | d4, e4 | outposts |
r2q1rk1/pp1nbpp1/2p2n1p/3ppP2/2P1P3/2NP1QPN/PP5P/R1B2RK1 w - - 0 15 | g4 | Identify any White knight outposts on the board. | None | outposts |
5rk1/2p3p1/p1p5/3p2p1/3Pb1q1/2P1QN2/PP1BnK1P/5R2 b - - 5 27 | Rxf3+ | Is the move from g4 to g3 legal? | Yes | legality |
1r2r3/pb4kp/1p4q1/2pp2p1/3P3P/2P1NQ2/PP6/4RRK1 w - - 0 30 | h5 | What piece is on e8? | Black Rook | occupancy |
r2R4/p5kp/2p3p1/2p2b2/6P1/2P2Q1P/P4P1K/4r3 w - - 3 3 | Rxa8 | Is the move from d8 to d3 legal? | Yes | legality |
r2q1rk1/pbpnppbp/1p1p1np1/8/3P4/4PN1P/PPP1BPPB/RN1Q1RK1 w - - 2 9 | Nfd2 | What piece is on a1? | White Rook | occupancy |
5Rk1/4p2p/4p1p1/p2q4/3n1B1P/6P1/5P2/2Q3K1 b - - 0 31 | Kxf8 | Identify any White knight outposts on the board. | None | outposts |
r1b2rk1/4np2/1qn2Bp1/2bpp1Pp/p3PP2/3B2NQ/1PP4P/R1N1K2R w K - 0 22 | f5 | What piece is on g5? | White Pawn | occupancy |
r1b2rk1/pp1n1p1p/6p1/q5B1/2pPQ3/2P2N2/P4PPP/R4RK1 b - - 0 15 | Qxc3 | Is the move from a5 to e5 legal? | Yes | legality |
r4r2/4q1kp/2p1bpp1/Pp6/4PR2/3P3P/2PN1QP1/5R1K b - - 0 26 | c5 | Identify any Black knight outposts on the board. | a4 | outposts |
2r1q1k1/pp3rpp/3R1b2/8/3P4/1B5Q/PP4PP/3R2K1 w - - 3 24 | Rd7 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqr1k1/1p2bpp1/p1n2n1p/3p4/3P1B2/2NB1N1P/PP1Q1PP1/R3R1K1 w - - 0 15 | Bxh6 | Is the move from g2 to h6 legal? | No | legality |
r2qkb1r/ppp2ppp/5n2/4p3/3np1b1/1P3NP1/PBPP1PBP/RN1QR1K1 w kq - 0 9 | d5e4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3BQbnr/k6p/p2qp3/1bp1p3/R3P3/3P4/1PP3PP/6K1 w - - 0 23 | Qxb5 | What piece is on b8? | Empty | occupancy |
8/2q2Bkp/4R1p1/p1p2n2/3bQP2/P6P/1p5K/4R3 b - - 2 33 | Kxf7 | Does White have any passed pawns? | No | structure |
r2qk2r/1ppbbppp/p1n1p3/4P1B1/2pP3P/P1N2N1R/1PP1QPP1/R3K3 b Qkq - 1 12 | b5 | Are there any open files in this position? | No | files |
2r1r1k1/p2P1p1p/6p1/4p2q/PB2Q3/1n2P1P1/5P1P/5RK1 w - - 3 26 | Qc6 | Identify any White knight outposts on the board. | None | outposts |
N1b3kr/pp2b1pp/3p1n2/4n3/3QPP2/2N5/PPP3qP/R1B1KR2 b Q - 0 13 | Nfg4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
1rr5/p2bpp1p/3p1kpP/1p1P4/3R2P1/P4P2/1PP5/1K3B1R b - - 2 21 | Rb6 | Identify any White knight outposts on the board. | None | outposts |
r1bqr1k1/ppp2p1p/6p1/2n5/2Pb4/2NBP2P/PP3P2/R2QK1R1 b Q - 1 15 | Rxe3+ | Does White have any isolated pawns? | Yes: h3 | structure |
r1q3k1/1pp2rbn/3p2Np/3Pp3/p1P5/P1NbB2P/1PQ2PP1/R5K1 w - - 0 21 | Qxd3 | What piece is on f7? | Black Rook | occupancy |
r6r/pp2kpbp/5np1/3bp3/8/2P1B1PB/PP2NP1P/3R1RK1 w - - 4 20 | Bc5+ | What is the material balance in this position? | Equal | material |
r1b2rk1/1pp2ppp/pn2p3/8/P1pP4/4P1P1/1P1N1PBP/R4RK1 b - - 0 16 | Bd7 | Identify any Black knight outposts on the board. | b3 | outposts |
2Q3k1/5rpp/8/p7/8/4B2P/1q4P1/4R1K1 b - - 1 34 | c6c8 | Is the White king in check? | No | check |
r4rk1/5p1p/6BP/pp1pq3/2p1p3/P1P1P2P/2PK2Q1/R7 b - - 0 26 | h5g6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/p1Rrk3/1p4p1/5p1p/P2P3P/4PKP1/8/8 w - - 3 49 | Rc6 | What is the material balance in this position? | Equal | material |
2r1rb1k/5ppB/p3b3/1pnp3R/6R1/P3P2P/1PQ2P2/1K1N3q b - - 1 27 | Bxg4 | Are there any open files in this position? | Yes: c | files |
r3kb1r/3n1ppp/bqn1p3/p1ppP3/1p1P1P2/2P1BN2/PP1QB1PP/R2N1RK1 w kq - 2 13 | Bf2 | Does White have any isolated pawns? | No | structure |
6n1/pp4k1/3p2p1/1P2p2p/2P1P3/4Q3/P2KBrq1/R1B5 w - - 4 28 | c5 | Does White have any passed pawns? | No | structure |
1r2q3/1k1nb1p1/p3p1p1/1p1n1pP1/1BrP1P2/1R1NP2P/R5B1/1Q4K1 w - - 10 37 | Qa1 | Is the Black king in check? | No | check |
6k1/7p/4n1p1/p4p2/1pr5/3R1PP1/P4K1P/5N2 w - - 0 39 | Ne3 | Does Black have any isolated pawns? | No | structure |
8/8/8/P1Q4p/6k1/2PK4/q7/8 b - - 9 63 | c4d3 | Identify any Black knight outposts on the board. | g4 | outposts |
rn1r3k/pp4p1/1b2B3/6p1/3PQ3/P7/1P3PPP/6K1 b - - 0 23 | Rxd4 | Identify any White knight outposts on the board. | e5 | outposts |
4k3/R4p2/p1r5/P4bP1/3B1P2/4P3/2p5/3K4 w - - 0 48 | Kc1 | Are there any open files in this position? | Yes: b, d, h | files |
4B3/1Pb2K2/8/8/1Pk5/8/8/8 b - - 0 7 | Kxb4 | Are there any open files in this position? | Yes: a, c, d, e, f, g, h | files |
r1b2b1r/pp1k2pp/2n1p3/2pqn1BQ/8/P1P5/1P3PPP/R3KBNR w KQ - 2 13 | Rd1 | Is the move from g5 to g6 legal? | No | legality |
2b5/r5k1/p3p1p1/1pp2p2/6P1/2P5/PP2BP1P/3R2K1 w - - 0 28 | g5 | What is the material balance in this position? | Equal | material |
1b6/4N2k/5p1p/7P/2P3P1/2B5/2K5/7b b - - 1 75 | Be4+ | What piece is on h5? | White Pawn | occupancy |
8/1k3p1p/4p1p1/P2p2P1/1Pr1P2P/8/5P2/3R2K1 w - - 1 33 | exd5 | Does White have any passed pawns? | Yes: a5, b4 | structure |
2b3nr/p1pp2kp/6p1/1Q6/4P3/6b1/PPPP1pqP/RNBK1R2 b - - 0 16 | d5 | Are there any open files in this position? | No | files |
4rn1k/p5b1/1p1R4/3Q4/1P1n1P2/P3q1NP/6PK/5R2 w - - 7 35 | Nh5 | Is the move from f4 to f5 legal? | Yes | legality |
r2r1k2/qp4pp/1np2p2/p2b1Q1P/P6N/2pB4/1P3PP1/R4RK1 w - - 2 31 | h6 | Does Black have any isolated pawns? | No | structure |
8/8/1p2R3/pk6/2P5/6PK/5P1P/8 b - - 0 36 | b3c4 | What is the material balance in this position? | White is up 7 pawns of material | material |
8/5p1p/p1r5/5p2/Pp2kP1N/1P2p1P1/2PbR2P/3K4 w - - 6 37 | c4 | Does Black have any isolated pawns? | Yes: h7 | structure |
r2k3r/p1q3p1/2pb4/3p1Q2/3B1Pn1/2N5/PPP3PP/5RK1 w - - 1 26 | Qxg4 | What piece is on e4? | Empty | occupancy |
r1bq3k/1p1P1r1p/2p5/p1b5/4B1Q1/6P1/PP3P1P/3R1RK1 w - - 1 22 | Qh5 | Identify any White knight outposts on the board. | f4, h4 | outposts |
6rk/3b1R1p/p2p4/4b3/2P5/1P6/P5PP/5R1K w - - 0 40 | Rxd7 | Is the move from a2 to a1 legal? | No | legality |
6k1/pB5p/6p1/PPb5/8/6PP/7K/8 b - - 0 34 | Kf7 | Is the move from c5 to b6 legal? | Yes | legality |
r1bq1rk1/pp2n1pp/1n1p1p2/2pPp3/2P1P1PP/P1PB1PN1/2Q5/R1B1K2R b KQ - 1 14 | Kf7 | Is the move from b7 to b4 legal? | No | legality |
8/4r3/8/3Pkp1p/4q3/P7/1P5P/6RK w - - 2 42 | e1e4 | Is the Black king in check? | No | check |
8/p7/1p5p/5pk1/2P5/1P2Q3/P5PK/q7 b - - 4 45 | e6e3 | Is the White king in check? | No | check |
r1r4q/p3p3/1p1nN1kp/3P1pP1/2P1pP2/4P3/QR6/2R3K1 b - - 1 34 | Nxc4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkb1r/p1p2pp1/1p2p2n/3pP2p/3P1P2/P1N1BN2/1PP3PP/R2QKB1R b KQkq - 3 8 | c5 | Is the d-file open, semi-open, or closed? | closed | files |
r3k2r/pp2bppp/5n2/2p3q1/8/1PN1PpP1/PB1P3P/R2Q1RK1 w kq - 0 18 | Qxf3 | Are there any open files in this position? | No | files |
r1b2rk1/ppq1ppbp/2n3p1/2p5/2BPP3/2P1B3/P3NPPP/R2Q1RK1 w - - 6 11 | Rc1 | Is the move from e2 to g3 legal? | Yes | legality |
5rk1/ppqbppb1/3p1np1/8/2rNP1pP/2N1BP2/PPPQ4/1K1R3R w - - 0 17 | h5 | Does Black have any isolated pawns? | No | structure |
7r/2p2p1p/1p4pk/2q1Q3/8/1P1P1N2/P1PKR3/8 w - - 1 30 | Qxc5 | Does Black have any passed pawns? | Yes: f7, g6, h7 | structure |
r1b2rk1/1pqn1pb1/p2p2pp/P1pPp3/4P2B/2N1N3/1PP2PPP/R2Q1RK1 w - - 1 16 | Qd3 | Does White have any isolated pawns? | No | structure |
2k4r/ppp2p2/2np4/4p3/2BPP1Q1/2P1P2q/PP6/R5K1 b - - 0 21 | e2g4 | Is the White king in check? | No | check |
8/2r5/p1B1pnq1/2Q2bkp/2PpPR2/3P2P1/PP5P/6K1 b - e3 0 34 | Kh6 | What piece is on b6? | Empty | occupancy |
r1b2rk1/2p2ppp/p1Npq2n/8/4P3/2N1P2P/PPP3P1/R2Q1RK1 w - - 1 13 | f6e6 | What is the material balance in this position? | White is up 1 pawn of material | material |
Bn2k3/p1p2p2/3p4/1P1N4/P1Q5/3P4/2PKP3/R5N1 b - - 4 41 | b4c4 | Identify any White knight outposts on the board. | a6 | outposts |
r1b1kbnr/ppp1q1pp/2nP1p2/3Q4/5P2/5N2/PPP1P1PP/RNB1KB1R b KQkq - 0 6 | e5d6 | What is the material balance in this position? | White is up 2 pawns of material | material |
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