fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r2q2k1/ppr1nbbQ/7p/3pP1p1/5pPP/P1PB1N2/2P2P2/R1B1R2K b - - 4 26 | Kf8 | Identify any White knight outposts on the board. | d4, d6, f6 | outposts |
6k1/p6p/5pp1/1p2B3/4Q1P1/P3P1KP/1P6/5q2 b - - 6 37 | Qe1+ | Does Black have any isolated pawns? | No | structure |
r2q1rk1/1bp1bppp/p3pn2/1p4N1/3PN2P/3B4/PPP1QPP1/1K1R3R b - - 4 14 | Bxe4 | Identify any White knight outposts on the board. | None | outposts |
r1b1r1k1/ppp4p/5pq1/2nP4/3N4/1PP5/P1K3BP/R4Q1R w - - 2 26 | Kb2 | Does White have any passed pawns? | No | structure |
r1bq1rk1/5pb1/3p1n1p/p1BPp1pP/Pp2P1P1/5P2/1P1NB2P/R2QK1NR b KQq - 0 1 | dxc5 | Is the move from c8 to e6 legal? | Yes | legality |
r1b1k2r/1pq2pp1/2pn3p/p1b5/2Bp1B1P/5Q2/PPP2PP1/R3K2R b KQkq - 0 12 | h2h4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
1Q3r2/1b1qbk1p/p2p2p1/8/8/1P4P1/P4P1P/2R1R1K1 w - - 6 29 | Rc7 | What piece is on e3? | Empty | occupancy |
1r1q1rk1/p2bpp1p/3p2pQ/1p1P4/2BN4/5P2/PPP3PP/2KR3R b - - 0 16 | bxc4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/pp3ppp/2n1b1n1/1N1p3Q/6P1/1P1P3P/P1P2P2/b3R1K1 w - - 0 17 | f6a1 | What is the material balance in this position? | Black is up 13 pawns of material | material |
1rbr4/1pR5/pN3kp1/P2Pp3/BP2Pb1p/5P2/5KP1/R7 w - - 3 37 | Bd7 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
8/5k1p/5p2/4p3/p2p4/Nb2KP1P/6P1/8 w - - 0 40 | d5d4 | Is the White king in check? | Yes | check |
4k3/pp1n1pp1/4pq2/8/3b4/P1Nn1Q2/1P3P2/4RK2 w - - 0 25 | Qxd3 | What piece is on b2? | White Pawn | occupancy |
rnb1k2r/pp4pp/3b1nq1/3p4/3P4/2N2B2/PPP3PP/R1BQ1RK1 w kq - 0 13 | Nb5 | Does Black have any isolated pawns? | Yes: d5 | structure |
2Q5/p3rp2/1b4k1/7p/1P4n1/8/P4PPP/4R1K1 w - - 0 34 | h7g6 | What is the material balance in this position? | White is up 5 pawns of material | material |
8/k1rR2K1/p4p1p/1pr2P2/5P2/2nR1B2/6PP/8 b - - 0 40 | b4 | Is the White king in check? | No | check |
4rrk1/ppqn1pp1/2pbb2p/3p4/3Pn3/2NQ1N1P/PPPB1PP1/3RRBK1 b - - 3 14 | f5 | Does Black have any isolated pawns? | No | structure |
5r2/R7/1pkrR1Q1/3qp3/P1pp4/6P1/1P5P/6K1 w - - 1 35 | Qg7 | Identify any White knight outposts on the board. | b5, h4 | outposts |
2rqr1k1/1b3pbp/pn1p1np1/1p1P4/1P2P3/1QN3PP/4NPB1/1RB2RK1 w - - 1 17 | Rd1 | What piece is on b7? | Black Bishop | occupancy |
8/5p2/5P1k/p1p1R2N/P1P1bpP1/1P3r2/5K2/8 w - - 0 49 | Kg1 | Is the White king in check? | Yes | check |
r2qkb1r/1B1n1pp1/p3pn1p/1p6/3p2P1/2N4P/PPP2P2/R1BQR1K1 w kq - 0 13 | Bxa8 | Are there any open files in this position? | No | files |
r1b2knr/pppq1ppp/1bnp4/1B1P4/4P3/1Q3N2/P4PPP/RNB2RK1 b - - 0 11 | Na5 | Identify any Black knight outposts on the board. | None | outposts |
6k1/6bp/r2n1pp1/2R5/1p1P1P2/4q1P1/1B3N1P/1Q4K1 b - - 2 36 | f5 | Identify any Black knight outposts on the board. | a3, c3 | outposts |
3r4/8/8/6k1/3P4/3K4/8/5R2 w - - 0 1 | Kc4 | Is the move from f1 to f2 legal? | Yes | legality |
r4rk1/pp3ppp/4nq2/3p1b2/3N4/P3P3/1P2BPPP/R2QK2R w KQ - 2 15 | Nxf5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
2r1r1k1/5p2/Q2p2p1/3P2Pp/1p6/8/1PP3RR/4q2K w - - 2 34 | e4e1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1q2rk1/p3bppp/1p6/3p4/Q1bP1B2/6P1/PP3P1P/RNR3K1 b - - 3 19 | Qf5 | Is the Black king in check? | No | check |
8/2k3r1/5N2/3Pp3/4P3/5P2/5K2/8 w - - 0 63 | Ne8+ | Are there any open files in this position? | Yes: a, b, c, g, h | files |
r2r2k1/p2nnppp/4p3/2p5/2P5/P1B1P3/3NKPPP/R6R b - - 3 15 | Nc8 | What piece is on h6? | Empty | occupancy |
2kb1q2/1p5p/2r5/8/Q3P1b1/P2P4/BPP3P1/R3K3 b Q - 4 30 | Bh4+ | Does Black have any passed pawns? | No | structure |
3rkb1r/1b3p2/p4p1p/q2P4/1pB2P2/4Q3/PPP3PP/2KR3R b k - 0 18 | Kd7 | Is the Black king in check? | Yes | check |
8/8/2p5/Np1p4/1P1P4/p1Pk4/8/1K2n3 b - - 9 72 | Nc2 | Is the move from d3 to d2 legal? | Yes | legality |
2r1k2r/1b2b3/p2ppp2/1p2q2p/4P3/P1NR3Q/1PP1B1PP/1K1R4 b k - 1 21 | Kf7 | What is the material balance in this position? | Equal | material |
rbqnkrbn/ppp1p1pp/3p4/5p2/2P5/6N1/PP1PPPPP/RBQNKRB1 w KQkq - 0 3 | f4 | What piece is on d1? | White Knight | occupancy |
r6k/pp3Qbp/5Np1/4p3/2p5/8/PqP3PP/5R1K w - - 3 26 | Ne8 | Is the move from h1 to a6 legal? | No | legality |
r2b1rk1/2q2p1p/pp2p1bB/8/P2R4/8/1PP1BQPP/5R1K b - - 2 24 | Re8 | Identify any Black knight outposts on the board. | None | outposts |
6k1/5ppp/8/1N1P2q1/8/P1Qn1P2/6P1/4rKRR w - - 12 36 | e8e1 | Is the White king in check? | Yes | check |
r4rnk/ppp3pp/3b2n1/3Npq2/1PB5/P3P2P/1B3PP1/R2Q1RK1 w - - 4 19 | Qg4 | Identify any Black knight outposts on the board. | None | outposts |
4qrk1/5B2/3Qp2p/1b4p1/3P2R1/p3P1P1/P6P/1R4K1 b - - 0 4 | Qxf7 | What piece is on f8? | Black Rook | occupancy |
rnbqkbnr/ppp1p3/8/3p1ppp/2PPPPP1/8/PP5P/RNBQKBNR b KQkq - 0 5 | e5 | Are there any open files in this position? | No | files |
7r/1bqnk2p/p3p1p1/1p1np3/8/1NPB2Q1/P1PR2PP/1K2R3 b - - 1 21 | Rc8 | Identify any Black knight outposts on the board. | a4, c4 | outposts |
r1bqkb1r/ppp2ppp/5n2/n2Pp1N1/2B5/8/PPPP1PPP/RNBQK2R w KQkq - 1 6 | d3 | What piece is on f3? | Empty | occupancy |
3r1rk1/pp3ppp/2n5/8/4b3/P2BP3/1PQ2PqP/2KR3R b - - 3 18 | c4d3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
4b3/p1q1kp2/1p1rp3/2p3p1/2P5/Q5P1/PPB4P/1K2R3 w - - 1 29 | Qe3 | Is the Black king in check? | No | check |
5k2/8/RB4p1/1pP5/1P4pP/2r5/4r1PK/8 b - - 0 56 | Rcc2 | Are there any open files in this position? | Yes: a, d, e, f | files |
2r2rk1/p2qbppp/bp2pn2/4B3/3PN3/6P1/PP3PBP/R1RQ2K1 b - - 0 19 | Nd5 | Is the move from d7 to d4 legal? | Yes | legality |
rbqnkrb1/pp2pppp/2p3n1/3p4/3P4/2P1P1N1/PP3PPP/RBQNKRB1 b KQkq - 0 4 | f6 | What piece is on a7? | Black Pawn | occupancy |
r2qk2r/p3np2/1pp2b1p/n2p1bp1/Q2P4/2N1P1PP/PP1B1PBN/R4RK1 w kq - 0 15 | Nxd5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r7/2p1p1kp/6p1/1P2Qp1b/1qP5/r4N1P/P3BPP1/R2R2K1 b - - 4 27 | d5e5 | Is the Black king in check? | Yes | check |
4r1k1/2qn2p1/2rpp1Np/pp2p1bP/2P5/1P1R4/PB2QPP1/3R2K1 w - - 0 33 | cxb5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1kbr3r/p3q2p/1p1p1p2/1P1P1P1p/N1P1P3/4Q2P/4B1P1/b3R1K1 w - - 0 25 | e5a1 | What is the material balance in this position? | Black is up 4 pawns of material | material |
3r4/2kp4/pp2p3/2P5/2PnPpr1/7P/P5K1/2R5 w - - 0 34 | g8g4 | Is the White king in check? | Yes | check |
r1b1k2r/pp1p1ppp/8/2n1P3/2P5/6P1/P2N1P1P/1R2KB1R w Kkq - 0 16 | Bg2 | What is the material balance in this position? | Equal | material |
rnbq1rk1/pp3pbp/3ppnp1/2pP4/2P1PP2/2N2N2/PP4PP/R1BQKB1R w KQ - 0 8 | Be2 | Is the f-file open, semi-open, or closed? | closed | files |
1q6/1K2k3/8/8/8/8/8/8 w - - 0 71 | h8b8 | Is the White king in check? | Yes | check |
8/2R5/4k1p1/5n2/3P1K2/5P2/3B1P1P/r7 b - - 4 45 | Nxd4 | Does White have any isolated pawns? | Yes: d4, f2, f3, h2 | structure |
8/R3np2/2p2kp1/2Np3p/3P1P2/4P3/1r3P1P/5K2 w - - 12 36 | Rc7 | Is the White king in check? | No | check |
1n3r1k/4rppp/3q4/1QRBp3/PP1p4/3R2P1/4PP1P/6K1 w - - 1 27 | e3 | Does White have any isolated pawns? | No | structure |
1rb2rk1/5p2/6p1/p2p4/6p1/1P6/P4PPP/3RRNK1 b - - 1 23 | a4 | Is the Black king in check? | No | check |
r1b3k1/p1p2ppp/2p1r3/1pb5/8/2Pq1B2/PP1P1PPP/R1BQ1RK1 w - - 1 13 | b4 | Is the move from g1 to f1 legal? | No | legality |
6k1/5p1p/4p1p1/p5n1/3P4/P1r1PK2/7P/R3N3 w - - 4 32 | e4g5 | Is the Black king in check? | No | check |
6Q1/Bp1kbp2/p1bpp2p/8/8/1B3N2/PPP1n1rP/5R1K b - - 0 28 | Rxg8 | Is the move from e7 to d8 legal? | Yes | legality |
r1bq1rk1/1pp2ppp/p1np1n2/2b1p3/B3P3/2PP1N2/PP3PPP/RNBQR1K1 b - - 2 8 | Ne7 | Is the a-file open, semi-open, or closed? | closed | files |
r2q1rk1/p4ppp/2Qb4/3p4/8/2P2P2/PP3P1P/R1B2RK1 b - - 0 16 | Rc8 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1kb1r/pp1p1ppp/1q1P4/2p1P3/3nQ3/2N5/PP3PPP/R1B1KB1R b KQkq - 0 12 | Qa5 | Identify any White knight outposts on the board. | d6 | outposts |
8/2N3p1/6kp/pp6/4Q2P/B1P5/5qP1/4R2K b - - 4 46 | e7e4 | Is the Black king in check? | Yes | check |
6k1/p1r5/1p3R1p/8/5P2/3N4/P1p3KP/8 w - - 0 38 | Nc1 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
r3r1k1/p3ppb1/1p1q1np1/3P2Bp/2P5/3BR1Q1/P4P1P/4R1K1 w - - 3 24 | a4 | Is the move from g3 to a7 legal? | No | legality |
r1b1k2r/ppppqppp/8/1Bb1n3/3PQ3/8/PPP2PPP/RNB2RK1 b kq - 0 8 | Nc6 | What piece is on h7? | Black Pawn | occupancy |
rnbqkb1r/pp2pppp/2p2n2/8/3PN3/8/PPP2PPP/R1BQKBNR w KQkq - 1 5 | Qd3 | What piece is on b4? | Empty | occupancy |
r1b1k2r/ppq1nppp/1bn1p3/3pP3/8/1N1B1N2/PPP2PPP/R1BQ1RK1 w kq - 8 10 | a4 | What piece is on a3? | Empty | occupancy |
2kr4/pp6/q3pp2/2P1n3/3Pr3/4B2Q/PP1K1P1P/R6R b - - 0 24 | Qc4 | What piece is on h4? | Empty | occupancy |
2Q1nk2/5p2/p2p2p1/1q1P3p/2pP4/5N1P/1P3PPK/8 b - - 5 34 | a5 | Identify any Black knight outposts on the board. | b3, b5, d3 | outposts |
2kr4/pp1nbpp1/q1p1p3/3pP1N1/3n1B1r/2P1NQ2/PP3P1P/R3K2R w KQ - 0 17 | Qd1 | Is the move from b2 to c1 legal? | No | legality |
r4r1k/ppp2p1p/1nq2p2/4b3/3nNPQ1/1B4P1/PPP4P/R4RK1 w - - 3 19 | fxe5 | Is the move from a1 to h3 legal? | No | legality |
r1bq1k1r/1p1p1pp1/2n4p/p1bNpN2/4P3/2P5/PP3PPP/R2QKB1R w KQ - 0 13 | Qd2 | Does White have any isolated pawns? | No | structure |
rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1B3/PPP1BPPP/R2QK2R b KQkq - 1 7 | Qc7 | Is the move from e8 to h8 legal? | No | legality |
r1b1k2r/2q2ppp/p1p1p3/4P3/4pB2/2P2Q2/P1P2PPP/R4RK1 w kq - 0 14 | Qxe4 | What is the material balance in this position? | Equal | material |
r4rk1/pp1q2pp/2pb4/3p4/3P2P1/1Q2pP1P/PP2P1B1/2R1R1K1 b - - 1 19 | Rae8 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
6r1/p2k4/4p2R/2Pn1p2/pP1p2p1/P4nK1/4N3/3R4 w - - 1 38 | Nxd4 | What piece is on a6? | Empty | occupancy |
3r2k1/2q2p1p/2r1b1pP/1pNpPpQ1/pP1R4/P1P3P1/5P2/3R2K1 b - - 9 41 | Rxc5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
6k1/6bp/r2n1pp1/3R4/1p1PpP2/1P2P1P1/1B2qN1P/1Q4K1 b - - 0 33 | Qxe3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
3r3k/6p1/4p2p/4q3/6P1/PQ2PB1P/5P2/6K1 w - - 2 34 | a4 | Identify any White knight outposts on the board. | b4 | outposts |
8/p6p/1p1k4/4bP1P/P1P5/1P1K4/8/8 b - - 2 41 | c2d3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqkbnr/pppp2pp/2n1p3/5p2/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 4 | d5 | Identify any Black knight outposts on the board. | None | outposts |
2k4r/1p3p1P/p3p1r1/3pnn2/4qP2/PR5R/2P1N1P1/2BQ1K2 b - - 4 25 | Qxg2+ | What piece is on b1? | Empty | occupancy |
3r4/3b1p1Q/pp2nk1p/3pRBq1/1P1P4/P5NP/5PP1/6K1 w - - 3 33 | Bg4 | Is the e-file open, semi-open, or closed? | open | files |
8/2k2p2/1p2pP2/3r4/1p3QP1/1P6/1qp2PKP/2R5 b - - 3 35 | Kd7 | What piece is on e4? | Empty | occupancy |
5rk1/p1p2qpp/1bpp1r2/8/4P1b1/1PQN2N1/P1PR1PPP/5RK1 b - - 10 20 | Be3 | Is the move from f6 to f3 legal? | Yes | legality |
2r1r3/5pk1/6bp/8/Np1qnRP1/1P1n2P1/3Q2BP/1N1R3K w - - 5 34 | Qxd3 | Does White have any passed pawns? | No | structure |
r1bq1rk1/1p3ppp/p1n5/4p3/2Pb4/1PN3P1/PB3PBP/R2Q1RK1 w - - 0 17 | Qd2 | What piece is on b4? | Empty | occupancy |
5rk1/4Qp2/1p6/2pP2p1/2P2q2/8/P5P1/4R1K1 b - - 0 31 | Kg7 | Does White have any passed pawns? | Yes: d5 | structure |
rnb1kbnr/ppppqppp/8/8/4Pp2/3P2P1/PPP4P/RNBQKBNR w KQkq - 0 5 | Nc3 | Identify any White knight outposts on the board. | None | outposts |
4r1k1/p1p1r1pp/1p2Pp1q/2pP1n2/2P1Rp2/5Q1P/P2N1PP1/4R1K1 b - - 3 28 | Nd4 | Are there any open files in this position? | No | files |
2rqk2r/pp1nbppp/2bpp3/3nP3/3P4/P2B1N2/1PQ2PPP/RNB1R1K1 w k - 9 12 | Bxh7 | Does White have any passed pawns? | No | structure |
5r2/p1PBR2p/1p4rk/4Q3/5p2/P6N/1P3P1K/3q4 w - - 0 39 | c8=Q | What piece is on e3? | Empty | occupancy |
2r2r2/p3n1k1/1p2P1pp/3p4/7P/5B2/PQ3PP1/6K1 b - - 1 26 | Rf6 | Is the move from f8 to a4 legal? | No | legality |
5rk1/pp4pp/1b3pP1/4pN2/1BP3P1/3r1b2/P4P2/R4RK1 b - - 1 25 | Rfd8 | Is the White king in check? | No | check |
3r4/R7/3Br1kp/1PPn4/4pp2/8/3R1P1P/6K1 b - - 1 44 | e3 | Identify any Black knight outposts on the board. | d3, f3 | outposts |
rq5r/4kpp1/pBB1p2p/8/1Q3P2/8/PPP3PP/2K5 b - - 0 26 | Kf6 | What piece is on h6? | Black Pawn | occupancy |
3r1r1k/pQ4pp/8/4B1q1/4R3/1P3P2/P5PP/R1b4K w - - 2 24 | Qxg7+ | What is the material balance in this position? | White is up 2 pawns of material | material |
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