fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
q4rk1/p1p2ppp/4p3/4P2P/1b1PN2n/8/2QR1PP1/4R1K1 w - - 1 27 | h6 | What piece is on f2? | White Pawn | occupancy |
rnb2k1r/ppppq1pp/5n2/8/1bB1P3/1QN5/PB3PPP/R3K1NR b KQ - 2 9 | Nc6 | Does Black have any passed pawns? | Yes: c7 | structure |
r3k2r/p1q1npp1/n3p2p/p1ppP2P/3P4/2P2N2/2P1QPP1/R1B1K2R b KQkq - 1 13 | Qb6 | Does White have any passed pawns? | No | structure |
r2r2k1/pp1b1ppQ/1q1npb1p/3n4/3P2P1/P2B1N2/1P2NP1P/R1BR2K1 b - - 2 18 | Kf8 | Is the Black king in check? | Yes | check |
r1b2rk1/5ppp/4p3/p1qnP3/1pQ5/6P1/PP1N1PBP/R4RK1 b - - 0 17 | Qxc4 | Is the move from c5 to e3 legal? | Yes | legality |
r2q3k/p7/3p1np1/2p3B1/2N1pPn1/1Q6/PP4P1/2KR4 w - - 0 26 | Ne5 | What piece is on a7? | Black Pawn | occupancy |
rnbq1rk1/pp2ppbp/5Np1/7P/5P2/5N2/PPP2QP1/R1B1KB1R b KQ - 0 12 | exf6 | Is the Black king in check? | Yes | check |
8/7n/3p4/3Pp3/4P2k/5K2/2B5/8 b - - 8 5 | Ng5+ | Are there any open files in this position? | Yes: a, b, c, f, g, h | files |
1r1q1rk1/p2bpp1p/3p1npQ/n2N4/1p1NP2P/1B3P2/PPP3P1/2KR3R b - - 1 15 | e5 | What is the material balance in this position? | Equal | material |
r5k1/1np2rpp/1p3p2/3qp3/PR1P4/4B1P1/2Q1PP1P/2R3K1 b - - 0 23 | c5 | Is the move from a8 to c8 legal? | Yes | legality |
r3qn1k/1pp2rpp/4bp2/n1b1pN2/p3P2N/2P2QP1/PP3P1P/R1BR1BK1 b - - 11 18 | Rd7 | Is the move from h7 to h5 legal? | Yes | legality |
3r4/2R2R2/3p2pk/1p1Pb3/1P2P1Pp/8/6P1/7K b - - 0 66 | Kg5 | Is the move from e5 to c3 legal? | Yes | legality |
r2qr1k1/p1pn1ppp/1p2p1n1/4P1P1/3P1P2/P7/1P1BN1P1/RQ2K2R b KQ - 0 20 | c5 | Is the move from f7 to g4 legal? | No | legality |
r5k1/pb3ppp/2n1p3/2p5/2B2P2/5N2/PP3PPP/3R2K1 w - - 1 17 | Ne5 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/p4p2/bpn1pqp1/2p1p3/2PP4/P1P3N1/R4PP1/3QKB1R w K - 0 16 | Ne4 | Does Black have any passed pawns? | No | structure |
8/5pN1/5P2/p1R5/P1P3k1/KP3p2/8/5r2 b - - 0 58 | f2 | What is the material balance in this position? | White is up 4 pawns of material | material |
4B1k1/rn3ppp/p2p1q1b/2p5/1p1pPP2/3P3P/1PP3P1/R2Q1RK1 w - - 1 25 | Qg4 | What piece is on g3? | Empty | occupancy |
8/r2k4/PR6/1PK2ppp/8/5P2/6PP/8 w - - 0 50 | h7h5 | What is the material balance in this position? | White is up 2 pawns of material | material |
5RR1/pq5p/2b1k2p/3N4/3P3P/P3P3/6P1/6K1 b - - 0 33 | Kxd5 | Does White have any passed pawns? | Yes: d4, e3 | structure |
8/pp4pp/4k3/3rPp2/1Pr4P/2B1KPP1/1P6/6R1 w - - 3 30 | Re1 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
4R3/1ppk3p/1p3p2/nP3b2/2q5/2Br4/PK3P1P/4Q3 b - - 3 28 | Be6 | Does Black have any passed pawns? | No | structure |
8/4R3/4kp2/3p3P/1ppP4/5K2/1n6/8 b - - 0 50 | h7e7 | Is the Black king in check? | Yes | check |
r1b1k1nr/pp3ppp/2n1p3/2ppP3/q2P4/P1P2N2/2PBBPPP/R2QK2R b KQkq - 6 9 | cxd4 | Is the move from e8 to b2 legal? | No | legality |
8/7R/8/1KP3p1/6k1/6P1/2r5/8 w - - 7 67 | Rg7 | Does Black have any passed pawns? | No | structure |
6k1/6bp/1p4p1/pP2p3/2PqP3/5PBN/4QKPP/8 w - - 6 37 | a1d4 | Is the White king in check? | Yes | check |
4r3/4k1p1/4Pn1p/p1rp4/P7/7P/1R3PB1/4R1K1 b - - 2 46 | Rec8 | Does White have any passed pawns? | Yes: e6 | structure |
rnbqkb1r/ppp2p1p/3p1np1/8/3pPP2/2N2N2/PPP3PP/R1BQKB1R w KQkq - 0 6 | Qxd4 | Does White have any passed pawns? | No | structure |
2rk4/p1p2Q2/bp1p2Np/4p1pP/2P5/1P3P2/Pb2q3/1K6 b - - 4 32 | c1b1 | What is the material balance in this position? | Black is up 10 pawns of material | material |
r7/4nk2/2n1p2p/3pPp1P/P1p2Pp1/2P1B3/2P1BKP1/R7 b - - 3 27 | Ke8 | Identify any Black knight outposts on the board. | c4 | outposts |
r4rk1/pbqn1ppp/1p1ppn2/8/1PP1P3/3B4/1BPNQPPP/R4RK1 b - - 5 13 | a5 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
r3b1k1/1p5p/2p1p2q/p1N1P1p1/2P5/1P4P1/P3Q2P/5RK1 w - - 1 29 | Rf6 | What piece is on e8? | Black Bishop | occupancy |
r3k2r/1b2bp1p/p2ppp2/q1n5/1p1NPP2/1BN5/PPPQ2PP/1K1RR3 w kq - 0 15 | Nd5 | Does Black have any isolated pawns? | Yes: h7 | structure |
r2r2k1/p4pb1/bpn4p/3p1qp1/8/1NP2N1P/PP1B1PPQ/3RR1K1 w - - 0 22 | Be3 | Is the e-file open, semi-open, or closed? | open | files |
r4rk1/2p3pp/p4q2/1p1pn3/6b1/2P2N2/PPBN2PP/R1B2QK1 w - - 4 17 | Nxe5 | Identify any Black knight outposts on the board. | e4 | outposts |
3rr1k1/1bq2pbp/pp2pnp1/3Pn3/3NP3/1PN2P2/PB3QPP/2R1RBK1 b - - 0 18 | Nfg4 | What is the material balance in this position? | White is up 1 pawn of material | material |
3k1b1r/1r1p1p2/p1q2N2/1p2p3/4P2p/2Q5/PPP3PP/1K1R4 w - - 0 26 | Qxc6 | Does Black have any isolated pawns? | Yes: h4 | structure |
2q2r1k/6pp/3pb3/n2Np1b1/2P1Pp2/N4B2/1r3PPP/R2Q1RK1 w - - 7 27 | Qd3 | Identify any White knight outposts on the board. | b5 | outposts |
r1b1k2r/pp2pp1p/2p3p1/8/4P3/1Bq1B3/P1P1K1PP/R2Q3R b kq - 0 13 | Bg4+ | Is the move from g6 to c1 legal? | No | legality |
r1bqk1nr/pp1pppbp/2n3p1/8/3NP3/8/PPP1BPPP/RNBQK2R w KQkq - 2 6 | Nb3 | Are there any open files in this position? | No | files |
6k1/4b3/3p2p1/3Pp2p/2P1P3/4B2P/4Q1K1/1q6 w - - 12 49 | Bf2 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
1R6/k6p/6p1/8/7K/r5r1/8/8 w - - 17 51 | Rb7+ | Is the move from h4 to c8 legal? | No | legality |
7r/rpk3pp/2p1Rb2/1P1n4/3P2Q1/7P/P4PP1/6K1 w - - 2 27 | Rxf6 | What piece is on e2? | Empty | occupancy |
r4rk1/pp4pp/8/3P1p1q/4Q3/4N1Pn/PP3PK1/3R1R2 w - - 0 29 | f6f5 | Identify any White knight outposts on the board. | e6 | outposts |
5rk1/p4p2/1n1q2pr/2p4p/3b1R1P/1B3QP1/PP3P2/2R3K1 w - - 0 27 | Rxf7 | Identify any Black knight outposts on the board. | d4 | outposts |
r2q1rk1/3nppbp/b2p2p1/2pP4/6n1/2N2NP1/PP2PPBP/R1BQR1K1 w - - 8 12 | e4 | Is the move from c1 to d2 legal? | Yes | legality |
8/2kb2pp/8/p1p1p3/P1PrPp2/3B1P2/4K1PP/2R5 b - - 1 33 | Rd6 | What piece is on f7? | Empty | occupancy |
1r1q1b1r/ppNk1pp1/2n3p1/1N1pn3/3p1B2/1Q6/PPP2PPP/R4RK1 b - - 5 15 | a6 | What piece is on f2? | White Pawn | occupancy |
r1r3k1/1b1n2pp/p4n2/P7/1qpNP3/1p2B3/1P2QPPP/RB1R2K1 w - - 5 25 | Nf5 | Identify any Black knight outposts on the board. | b3, d3 | outposts |
8/3R4/5ppk/1p2r2p/2p4P/2P2KP1/1P6/8 b - - 0 47 | g5 | Is the move from e5 to g5 legal? | Yes | legality |
r1bq1rk1/pp3ppp/2n2n2/3p4/2pP2P1/P1P1PP2/4N1BP/R1BQK2R b KQ - 2 11 | Na5 | Is the White king in check? | No | check |
r1b1k2r/p1p2ppp/1p1p4/8/1PP1K3/P3P3/3P3P/R1B2B1R b kq - 0 17 | Bb7+ | What piece is on e2? | Empty | occupancy |
8/ppk5/6R1/1Pp3PN/8/1P4P1/r2n4/2K5 w - - 1 44 | Rg7+ | What piece is on f1? | Empty | occupancy |
r1bq1rk1/ppp1b1pp/3p1np1/3Pp3/4P1P1/5P1B/PPP1Q3/RNB1K1NR b KQ - 0 12 | g3g4 | What is the material balance in this position? | White is up 2 pawns of material | material |
2kr3r/pppqbppp/2n1b3/3pP3/3P1N2/2PB1Q2/P1P3PP/R1B1K2R w KQ - 7 11 | Nxe6 | What piece is on h2? | White Pawn | occupancy |
2bq1Bk1/Pp5p/7R/4p1p1/P1P1Pp2/1n3P2/3rB1PP/5RK1 w - - 0 28 | a8=Q | Identify any White knight outposts on the board. | b5 | outposts |
r2q1rk1/1p1nbppp/p2p1n2/3Pp3/8/1N1QB3/PPP1BPPP/R4RK1 b - - 0 12 | Nc5 | Does White have any isolated pawns? | No | structure |
1r2r2k/pb5p/1p4q1/3p1NP1/3p4/2P2Q2/PP6/4RRK1 w - - 2 32 | Qf4 | Identify any Black knight outposts on the board. | e3, e4 | outposts |
6R1/8/1p3pk1/p6p/2K5/8/6r1/8 b - - 1 41 | e8g8 | Is the Black king in check? | Yes | check |
2kr3r/p3q2p/2p3p1/1n2p3/1P1pP2P/3P2P1/2P1QRB1/R5K1 b - - 0 23 | Kb7 | Does Black have any isolated pawns? | Yes: a7 | structure |
r1q3k1/1ppb1p2/3p2p1/2nPb2p/2PN4/pP2P1PP/P1Q3BK/R2R4 b - - 0 22 | h4 | Is the move from e5 to d4 legal? | Yes | legality |
6k1/4b2p/2qRp1p1/p3P3/P1r1P1Q1/4B3/5PPK/8 b - - 8 39 | Qc8 | Identify any Black knight outposts on the board. | None | outposts |
r1b1k2r/2q1bppp/p1np1n2/1pp5/3PP3/P4N1P/1PB2PP1/RNBQR1K1 b kq - 0 13 | cxd4 | Is the Black king in check? | No | check |
r3k2r/pp1nQppp/8/2p5/8/2n2N2/PPP2PPP/R3K2R b KQkq - 0 12 | d6e7 | Is the Black king in check? | Yes | check |
2rk3q/pp2b2p/8/8/1Pp5/2R1P1PQ/P2P3P/6K1 w - - 0 29 | Qe6 | Identify any White knight outposts on the board. | f4, h4 | outposts |
2kr1bnr/p1pb1q2/B3pp2/p2p3p/3P1P1N/2P5/1P4PP/1NBQ1RK1 b - - 1 14 | b5a6 | Is the White king in check? | No | check |
r5k1/p4pp1/2Nr3p/PP1pR3/5P2/5bP1/7P/2R3K1 w - - 2 40 | Nd4 | Is the White king in check? | No | check |
r4r2/pp2n2k/1q2P1pp/3p4/1P6/5B2/PB2QPPP/R5K1 b - - 4 22 | d4 | What piece is on a1? | White Rook | occupancy |
rnb3nr/pp2k2p/2p2q1b/4N2Q/3PPp1p/1P6/P1P3P1/RNB2RK1 b - - 0 12 | Nd7 | Is the Black king in check? | No | check |
rnb1k2r/pp3ppp/4pn2/3q4/3P4/5N2/PP1bBPPP/RN1QK2R w KQkq - 0 9 | Nbxd2 | Is the move from a2 to b8 legal? | No | legality |
r2qkb1r/pppn1ppp/3pbn2/6B1/2PQP3/2N2P2/PP4PP/R3KBNR w KQkq - 1 8 | f4 | Are there any open files in this position? | No | files |
r2qkb1r/5p1p/p1npb3/1p1Npp2/4P3/N2B4/PPP2PPP/R2Q1RK1 b kq - 3 12 | Bxd5 | Identify any White knight outposts on the board. | None | outposts |
rnb1kb1r/p2p1ppp/5n2/1p3Nq1/4PpP1/3P4/PPP4P/RNBQ1KR1 w kq - 0 12 | h4 | Identify any Black knight outposts on the board. | None | outposts |
3r1rk1/p3b2p/4q3/1pp2pp1/4n3/1P1NPQP1/PB3PKP/R2R4 w - - 0 22 | Ne1 | Is the move from g3 to g1 legal? | No | legality |
rnbqkbnr/ppp2ppp/4p3/8/4p3/2N4N/PPPP1PPP/R1BQKB1R w KQkq - 0 4 | d5e4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b1k2r/1p3ppp/p4n2/3Pp3/1b6/4qP1P/PP1B2P1/R3KBNR w KQkq - 0 14 | b6e3 | Is the White king in check? | Yes | check |
r3r1k1/pbpq2pp/1p3p2/3P4/2P1n3/1Q3N1P/PB3PP1/R3R1K1 w - - 1 22 | Nd4 | Identify any Black knight outposts on the board. | a5 | outposts |
R4b2/3rnp1k/2p2np1/1p2p1P1/1P2P2P/2P2B2/1N3P2/6K1 w - - 1 28 | gxf6 | Is the White king in check? | No | check |
3rk2r/p2b1ppp/1pK5/3p4/1QP2PP1/1P2p3/Pq4BP/R6R w k - 2 29 | e6d7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b5/3nk1p1/3Npr2/p1q1P1Q1/1n3P2/8/PRP3PP/2K1R3 w - - 3 29 | Kb1 | Does White have any isolated pawns? | Yes: a2, c2 | structure |
rq4k1/1p3pb1/1Br1b3/4p1R1/p3P1p1/P1P5/1P2BQ2/1K1R4 b - - 2 29 | f6 | Identify any Black knight outposts on the board. | f3, h3 | outposts |
1q2r1k1/pr3p1p/5p2/8/b1N1P3/2P5/P4PPP/2R1R1K1 w - - 3 27 | b2b7 | What is the material balance in this position? | Black is up 7 pawns of material | material |
2n5/1r1b1r1k/p5Rq/P1pP1P1p/2N5/2Q1NR1P/7K/8 b - - 7 43 | Qf8 | Does White have any isolated pawns? | Yes: a5, d5, f5, h3 | structure |
3r4/2p5/1kp2p2/2N5/1P2Pp2/R4P1b/7P/6K1 w - - 0 40 | Nd3 | Does White have any isolated pawns? | Yes: b4, h2 | structure |
8/6k1/7p/5P2/4N1KP/r7/8/8 b - - 2 60 | f3g4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr2nr/1pqbn3/5p2/1P1p2pp/1b6/3B1N2/1BP2QPP/R4R1K b - - 0 20 | b6 | Is the move from c8 to c7 legal? | No | legality |
7k/p5pp/8/3r1p2/1B6/P3P1P1/5P1P/6K1 b - - 3 29 | d6b4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn1qk2r/1b2bppp/p2ppn2/1p4B1/3NPPP1/P1N2Q2/1PP4P/R3KB1R b KQkq - 0 10 | Nbd7 | Is the Black king in check? | No | check |
2q1kb1r/1p1n1ppp/r3p3/Q2p4/2bP1B2/2N1PN2/PP1K1PPP/R1R5 w k - 7 15 | Qc7 | Is the Black king in check? | No | check |
r6r/p2bkqbp/2p1p3/3p4/1Q3B2/8/PPP2PPP/2KR1B1R b - - 4 17 | e4b4 | Is the White king in check? | No | check |
2r4r/pp1bk1bp/4p2p/1P1pN2B/P2n1P2/3R4/6PP/1N3RK1 b - - 1 21 | Nf5 | Does White have any isolated pawns? | No | structure |
3Q4/5p1k/4qPp1/P6p/7P/6P1/2p2P1K/8 w - - 1 51 | Qc7 | Is the Black king in check? | No | check |
r1b1k2r/1pq2p2/p2bp2p/4P3/3N3p/2N5/PPP3PP/R2QR1K1 b kq - 0 15 | Bxe5 | What is the material balance in this position? | Equal | material |
8/1QP5/Q7/5k2/3P4/8/3KP1B1/1R4N1 w - - 1 67 | f4f5 | Identify any White knight outposts on the board. | c5, e5 | outposts |
rnb2rk1/ppq1b1pp/2pp1n2/4pp2/2PP4/1P4PN/PB1NPPBP/R2Q1RK1 w - - 0 10 | c5 | Identify any White knight outposts on the board. | None | outposts |
rnbqkb1r/pp3ppp/5n2/3p4/2pP4/2P2N2/PPB2PPP/RNBQK2R b KQkq - 1 7 | Bd6 | Does Black have any passed pawns? | No | structure |
r1b1k1nr/pppp1ppp/8/1Bb5/3NP3/2N5/PPPP1P1P/R1BK4 b kq - 0 9 | e2d1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2k1r3/2p2pp1/1n6/N1q3Pp/Pn6/4B3/4QP1P/1K1R4 w - - 0 26 | Rd8+ | Is the move from a5 to b3 legal? | Yes | legality |
3Q4/p1p1rppk/1p3q1p/4p3/4Br2/8/PPP1R1PP/4R1K1 b - - 5 29 | c6e4 | Is the Black king in check? | Yes | check |
rnbqr1k1/p1p2ppp/3b4/1B1P3n/3PN2P/2K2P2/PPP1N3/R1BQ3R b - - 0 13 | c6 | What piece is on b2? | White Pawn | occupancy |
3r1k2/p6p/8/2P2R2/1P3pp1/R2B4/2K3PP/8 b - - 1 37 | e5f5 | Is the Black king in check? | Yes | check |
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