fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
4r1k1/5pb1/3p2p1/3P3p/7P/1Q3P2/1P3q2/K1NR4 b - - 2 37 | Re3 | Are there any open files in this position? | Yes: a, c, e | files |
r2q3r/1ppknppp/p1np4/4pP2/PP2P3/2P3R1/6PP/2BQ1RK1 w - - 1 15 | b5 | What piece is on h2? | White Pawn | occupancy |
2kr3r/3bbp1p/pqnppp2/1p6/4PP2/2NB1N2/PPPQ2PP/1K1R3R w - - 4 14 | a4 | Identify any Black knight outposts on the board. | None | outposts |
r1b1r1k1/ppb1qppp/2p2n2/4P3/1PN2p2/2P2N2/P1B1QPPP/R3R1K1 b - - 0 16 | Nd5 | Does White have any isolated pawns? | No | structure |
r1bq1knr/pppnp1bp/3p2p1/6N1/3PP3/8/PPP2PPP/RNBQK2R w KQ - 2 7 | Ne6+ | Are there any open files in this position? | No | files |
r4rk1/pbp3pp/1pn5/3n4/3P1p2/P3PN1P/1P1B1P2/2R1KB1R w K - 0 18 | Bc4 | Does Black have any passed pawns? | No | structure |
2r2rk1/2p1bppp/p2qpn2/1p4N1/3P3P/3B4/PPP1QPP1/1K1R3R w - - 3 17 | g4 | Identify any Black knight outposts on the board. | None | outposts |
6k1/5p2/p6p/2r1P1p1/2p2P2/2Rb2P1/P6P/4K3 w - - 0 40 | g7g5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
3k1r2/3nb1p1/2P1Qp2/8/3P4/3q1N2/3N1P2/2R2K2 w - - 2 41 | Ke1 | Is the move from c1 to e8 legal? | No | legality |
8/8/8/Np1b4/1P6/k1K5/8/8 b - - 1 3 | Ka4 | What piece is on a2? | Empty | occupancy |
1r6/p5pk/5p2/4p3/2B5/4BPK1/1P6/8 w - - 3 39 | b3 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
rnbBk2r/1p3ppp/p7/4p3/1bP5/2n5/PP2PPPP/R2QKB1R w KQkq - 0 11 | Qb3 | Is the move from b2 to b3 legal? | Yes | legality |
r2q1rk1/1b3pB1/p6p/1pp3p1/P1pp2B1/2N5/1P3PPP/R2QR1K1 b - - 0 19 | Kxg7 | Identify any White knight outposts on the board. | None | outposts |
7k/pR6/3P1b2/2P2b2/1P1n1B2/4K3/P7/8 w - - 1 52 | Rf7 | What piece is on f5? | Black Bishop | occupancy |
2q5/2p1r1kn/pp2b3/4P1p1/1P1pQp1r/P2P1P2/5NBP/2RR3K w - - 0 32 | Qxd4 | What piece is on b6? | Black Pawn | occupancy |
3k3r/p1p2p2/1N6/7p/8/3P4/PP4K1/R7 b - - 0 28 | cxb6 | Is the move from d8 to g1 legal? | No | legality |
1r6/4k2p/6p1/1r2pp2/2P4P/R4PP1/3K4/8 b - - 0 45 | Rb3 | Is the move from f5 to f4 legal? | Yes | legality |
8/8/5p2/8/3PpP2/8/4K3/6k1 w - - 0 62 | d5 | Does Black have any passed pawns? | Yes: e4 | structure |
8/8/8/4r3/K7/2kb2R1/8/8 b - - 7 83 | Rh5 | Is the move from c3 to d4 legal? | Yes | legality |
1Qb3k1/6p1/2r1p2p/q7/1b6/8/P4PPP/R4RK1 w - - 0 22 | Rac1 | Is the move from b8 to g6 legal? | No | legality |
r6r/pN1nkpp1/2p1pn1p/7P/1q1P4/3Q4/PPPN1PP1/R3K2R w KQ - 1 17 | Qb3 | Are there any open files in this position? | No | files |
6k1/1pp3b1/3p2pp/1P2p3/2P4K/3P1P1P/6r1/1RBQR3 b - - 2 28 | Bf6+ | Identify any Black knight outposts on the board. | f4, f5, h5 | outposts |
3r4/pp3k2/2n3b1/6Q1/2P2P2/P3P3/1P4PP/5RK1 b - - 2 27 | e5g5 | What is the material balance in this position? | White is up 8 pawns of material | material |
1Q2n1k1/Q6p/4b1pP/3p2B1/8/5pP1/P4P2/4q1K1 w - - 1 40 | Kh2 | Does Black have any isolated pawns? | Yes: d5 | structure |
r2qr1k1/1b2bppp/p2p1n2/npp1p3/4P3/2PPBN1P/PPBN1PP1/R2Q1RK1 w - - 2 13 | a4 | Is the c-file open, semi-open, or closed? | closed | files |
r1bq1rk1/pp3pp1/2nb1n1p/3p4/2pP3B/2P2N1P/PPB2PP1/RN1Q1RK1 b - - 1 13 | b5 | Does Black have any passed pawns? | No | structure |
r2qkb1r/pp3ppp/2n1pn2/8/3p4/2N1PN2/PP2QPPP/R1B2RK1 w kq - 0 13 | Rd1 | Are there any open files in this position? | Yes: c | files |
rnb1k2r/1p3p1p/p2ppp1Q/2pP3B/4P3/2N5/PqP2PPP/1N3RK1 b kq - 1 12 | Ke7 | Identify any Black knight outposts on the board. | None | outposts |
3rr1k1/1p4p1/P1pRb2p/4B3/2P2P2/6P1/P5BP/6K1 b - - 0 24 | Rxd6 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
3rk2r/2p3pp/p3p3/1pbq4/3n2Q1/8/P1BB1PPP/R3R1K1 w k - 0 20 | Bxh7 | Does Black have any passed pawns? | Yes: c7 | structure |
8/1p4k1/4b2p/2Q3p1/2P1pqP1/1B6/P1PK4/8 w - - 4 39 | g3f4 | Is the White king in check? | Yes | check |
7k/R6p/4pNp1/2p1P3/8/2Pr2P1/5P1P/1r4K1 w - - 1 34 | Kg2 | Is the move from g1 to g2 legal? | Yes | legality |
4r1k1/1r1n1pbp/6p1/2pP4/5P2/8/1PQNq1PP/1RB2R1K b - - 1 20 | Nf6 | Is the move from f7 to c1 legal? | No | legality |
r1bqk2r/ppp1bppp/2np4/8/8/2P1BN2/PPP2PPP/R2QKB1R w KQkq - 3 8 | Qd2 | What piece is on h7? | Black Pawn | occupancy |
1rb2rk1/2p3p1/3p3p/3P1q2/4N2P/1B2QnP1/5PK1/1R5R b - - 6 28 | Bd7 | Is the move from h6 to f6 legal? | No | legality |
r4rk1/pp4pp/4b3/7q/2QbpB1P/6P1/PP3P2/R1R3K1 w - - 2 20 | Qxd4 | Is the White king in check? | No | check |
b7/p5kp/1b2B3/4P3/3p1r2/1N2n2P/PP6/1RB3K1 b - - 0 29 | d3 | Is the move from e3 to d7 legal? | No | legality |
rn2k2r/pp2p3/2p1q1b1/3p3p/5BnP/2NB4/PPP3P1/R2Q1RK1 w - - 8 16 | Qe2 | What piece is on h2? | Empty | occupancy |
8/3P4/8/8/8/7Q/PP4p1/K6k b - - 2 55 | f5h3 | Is the Black king in check? | Yes | check |
r1r3k1/5ppp/4p3/q2p4/1Q1P4/n1P1P1BP/5PP1/R4RK1 w - - 0 26 | Bd6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1r1k1/ppqn1pbp/2pp1np1/8/1PPPp3/2N1PN1P/P3BPPB/R2Q1RK1 w - - 0 12 | Nd2 | Is the White king in check? | No | check |
3qkb1r/rp3ppp/p4p2/4Pb2/8/1Q2P3/PP3PPP/R1B1KB1R b KQk - 0 11 | fxe5 | Is the White king in check? | No | check |
3K4/1k1P4/5p2/5P2/8/8/4R2p/7r w - - 8 62 | Ke7 | Does White have any passed pawns? | Yes: d7 | structure |
r4rk1/bp1n1ppp/2pp4/pP2p3/2P1P2q/3P1Q1P/P1NB1P2/R4RK1 b - - 0 19 | b4b5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5rk1/6n1/p3p1N1/Pb2q2p/3p1rP1/6QP/3N1PB1/R5K1 b - - 0 35 | Qf6 | Does White have any isolated pawns? | Yes: a5 | structure |
rn2k2r/pbqpbppp/1p2p3/3n4/2NP4/2P2N2/PP2BPPP/R1BQ1RK1 b kq - 4 11 | O-O | Are there any open files in this position? | No | files |
6k1/1pb1nqpp/2p2p2/p2p1b2/P2P4/2P1BNP1/1P3PBP/2Q3K1 b - - 4 27 | g5 | Does Black have any isolated pawns? | No | structure |
8/P1pk4/1np2p1p/N3p1pP/1P2P1P1/3K1P2/8/8 w - - 0 56 | Nc4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r3k2r/pb2qp2/2p1pn1p/1p2n1p1/1bpPP3/2N3B1/PPQ1BPPP/3R1RK1 w kq - 0 14 | Bxe5 | What is the material balance in this position? | Black is up 4 pawns of material | material |
4k2r/7p/p4p2/3PpQ2/8/4R3/q4PPP/2r1N1K1 b k - 1 25 | Rf8 | Identify any Black knight outposts on the board. | b5, d4 | outposts |
3r4/Qp3pkp/5p2/8/2q1rP2/4R1PB/P3n2K/5R2 w - - 0 27 | Rf2 | Does Black have any isolated pawns? | Yes: b7, f6, f7, h7 | structure |
8/5pk1/3Kr1p1/6R1/5RP1/8/6r1/8 w - - 6 48 | Kc7 | Is the White king in check? | Yes | check |
r1b1kbnr/1pp3pp/p4p2/2p5/4P3/8/PPP1NPPP/RNBR2K1 b kq - 0 9 | Bd7 | Identify any Black knight outposts on the board. | None | outposts |
r3rnk1/1pQ2pb1/p1p3pp/8/2P1b3/1P2P1P1/P2R1P1P/2R3K1 b - - 1 22 | Ne6 | Is the move from h6 to e3 legal? | No | legality |
r2qkb1r/pp1npppp/3p1n2/8/3NP3/8/PPP2PPP/RNBQK2R w KQkq - 0 7 | f3 | What is the material balance in this position? | Equal | material |
8/p3Q3/1p1R1nkp/8/1P2p3/2P3p1/r4P1q/5RK1 w - - 2 40 | h3h2 | Is the White king in check? | Yes | check |
3k3r/1pp1n3/pn1Q2pp/5b2/2P5/2P2B2/P4PPP/R1B1R1K1 b - - 0 19 | d1d6 | Is the Black king in check? | Yes | check |
1nr3k1/5p2/rQp2bp1/3R3p/3P1q1P/3NP1P1/5PK1/2R5 w - - 0 44 | Qxa6 | What piece is on b8? | Black Knight | occupancy |
r5rk/2q3pp/2p4N/3p4/p7/8/PPP4P/1K1R4 w - - 0 5 | Nf7+ | Identify any Black knight outposts on the board. | e4 | outposts |
5bk1/p5rp/Pq2p2N/8/1p6/1P2P1P1/1BP3bP/R5K1 b - - 7 27 | Kh8 | Does White have any isolated pawns? | Yes: e3 | structure |
2k5/2p5/p3pR2/1p2P3/5NP1/2P5/PP2K2r/8 w - - 1 33 | h8h2 | Is the White king in check? | Yes | check |
6r1/p6p/5p2/3Qnk2/1r6/q1b1P3/P1R2PPP/5RK1 w - - 0 25 | Qxg8 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r2k2qr/8/p1Pp4/2n1R3/1p3PQb/8/PPP3PP/2KR4 w - - 7 25 | c7+ | Is the move from g4 to h7 legal? | No | legality |
rnbqkb1r/p3pppp/1p3n2/2Pp4/3P4/8/PP3PPP/RNBQKBNR w KQkq - 0 6 | b4 | What piece is on d5? | Black Pawn | occupancy |
r4rk1/1pp2pp1/p3q1np/4p3/2P1P3/1P3NP1/2PQ1P1P/R3R1K1 w - - 0 21 | Qd5 | What is the material balance in this position? | Equal | material |
1k2r2r/ppp1q1pp/6b1/4Pp2/2PP4/PQ3P1P/1P4B1/2KR2R1 b - - 0 23 | f4 | What piece is on f2? | Empty | occupancy |
r2qk1nr/pppb3p/2nb1pp1/1B1p4/7Q/1P2pN2/PBPP2PP/RN3RK1 w kq - 2 10 | Nc3 | Does Black have any isolated pawns? | No | structure |
2r5/6k1/p3pb2/1p1p1p2/3P1PP1/P2Q4/5BK1/2r5 b - - 0 44 | fxg4 | Does White have any passed pawns? | No | structure |
r3Nk2/pp4p1/2p4p/3p4/8/5Q1P/PPq2PP1/R3R1K1 b - - 0 27 | f6e8 | Is the Black king in check? | Yes | check |
r6r/1b2nkpp/8/pP1n4/R2N4/2b2RP1/4PPBP/2B3K1 b - - 1 21 | Kg6 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
1r2r1k1/3p2pp/b1p5/p1P5/3Np1n1/P5P1/5PBP/R3R1K1 w - - 0 26 | Bxe4 | Does Black have any isolated pawns? | Yes: a5 | structure |
r2q1rk1/pp1np1bp/5pp1/1Q1P4/5B2/2N2P2/PP3P1P/R3R1K1 b - - 1 17 | Ne5 | Does White have any isolated pawns? | Yes: d5, f2, f3, h2 | structure |
1k6/1P6/PP6/5p2/5P2/6p1/8/7K b - - 0 63 | g2+ | Does Black have any passed pawns? | Yes: g3 | structure |
3r1rk1/ppp1qpbp/2n1b1p1/7n/3P4/P1N1PN2/1PQ1BPP1/R1B1K2R b KQ - 2 12 | Rfe8 | Are there any open files in this position? | No | files |
r5k1/2pqrppp/pn6/1pNpP3/1n1P4/5N1P/PPb2PP1/2RQR1K1 w - - 0 20 | Qd2 | Are there any open files in this position? | No | files |
rn1qkbnr/pbpp1ppp/1p2p3/8/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 3 4 | Bb4 | Identify any White knight outposts on the board. | None | outposts |
r1b1q2r/ppk2N1p/2pp1p2/2b2P1Q/5B2/8/PP3PP1/2KR1B2 w - - 0 18 | Nxd6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rn1qr1k1/pp3ppp/5n2/2pP4/Pb2P3/1bNN1P2/1P1Q1KPP/R1B2B1R b - - 2 14 | Rxe4 | What is the material balance in this position? | White is up 1 pawn of material | material |
3B2k1/pr3ppp/5n2/5b2/2Pb4/P5P1/1P4KP/R4R2 b - - 0 21 | Rxb2+ | Is the move from f6 to e7 legal? | No | legality |
rn3r1k/ppp2p2/5p1p/7Q/3qB3/8/PPP3PP/RN3RK1 w - - 0 17 | d8d4 | Is the White king in check? | Yes | check |
r1bqkb1r/p4ppp/5n2/3pp3/8/3BB3/PPP2PPP/RN1Q1RK1 w kq - 0 11 | c4 | What piece is on e3? | White Bishop | occupancy |
r1r3k1/1p3pp1/4p1bp/1Bn1P3/Pp1N4/4P1Pn/1P5P/R2RBK2 b - - 0 24 | b3 | Does White have any isolated pawns? | Yes: e3, e5 | structure |
5knN/p2p2p1/Nb5p/1p2P2P/6P1/3P4/P1P1K3/8 w - - 0 30 | Kf3 | Does Black have any passed pawns? | No | structure |
2r1k2B/pp2b3/4bp2/3p1n1p/1P4p1/P7/5PPP/2RRN1K1 b - - 1 21 | Rb8 | Is the e-file open, semi-open, or closed? | open | files |
3r3r/1pk1b1pp/pNp1Pp1n/2P5/5B2/5P1P/PP3PP1/R3K2R b KQ - 2 16 | e3f4 | Is the Black king in check? | Yes | check |
8/3R4/p3r2p/1p2kp2/1P1p1P2/P2P2PP/8/6K1 b - - 0 30 | f2f4 | Is the Black king in check? | Yes | check |
r2qkb1r/pppb1ppp/5n2/1N2p3/Q1p5/2N1B1P1/PP2PP1P/R3K2R b KQkq - 3 10 | a6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
7k/p3pQb1/3p4/1p4p1/2r3P1/4BP2/PPP5/1K6 b - - 0 29 | Rb4 | Does Black have any passed pawns? | No | structure |
8/8/5pK1/5PbP/5kn1/1B6/8/8 b - - 30 79 | Ne3 | Are there any open files in this position? | Yes: a, b, c, d, e, g | files |
rkbrnqnb/pppppppp/8/8/8/6P1/PPPPPP1P/RKBRNQNB b KQkq - 0 1 | d5 | What piece is on c8? | Black Bishop | occupancy |
6k1/3n1p2/5n1p/3p2p1/R2Pp1P1/4P2P/3N2N1/2r2K2 w - - 3 30 | c8c1 | Is the White king in check? | Yes | check |
r3qk2/pbp2rbQ/1p4B1/3pP3/3P4/4B3/PPP4P/R6K w - - 7 25 | Bh6 | Is the move from a2 to e8 legal? | No | legality |
6r1/2k4p/5R2/2pqp3/3r4/8/5PPP/Q1R3K1 w - - 1 31 | g3 | Identify any White knight outposts on the board. | None | outposts |
1k1r4/5p2/1Q2p1p1/3pq1P1/1P6/1K6/8/8 b - - 0 47 | c6b6 | Is the Black king in check? | Yes | check |
2r2rk1/1p1q2bp/3p2p1/1N1Pp3/P3Bn2/5PP1/3Q3P/2R2RK1 b - - 0 26 | Nh3+ | Is the Black king in check? | No | check |
7k/1R4R1/2r4p/p1Kp3P/P2P4/8/1P4P1/8 w - - 35 58 | Kb5 | Is the move from c5 to c6 legal? | Yes | legality |
2R3k1/4ppbp/6p1/8/3Pp3/4B2P/Pr3PPK/8 b - - 3 28 | c6c8 | Is the Black king in check? | Yes | check |
r4rk1/pp3q2/3pR2p/5p2/2QP1N2/6P1/PP3P1P/6K1 w - - 1 26 | Qd5 | Does White have any isolated pawns? | Yes: d4 | structure |
1r1r1k2/1p4p1/pNb2p2/6N1/P4RPn/8/1P3P1P/4R1K1 w - - 0 29 | Ne6+ | Is the move from g1 to c3 legal? | No | legality |
r5kr/pp2b1p1/2q5/2pnPR1p/8/1PB2RPQ/P2P3P/6K1 b - - 2 26 | g6 | Is the White king in check? | No | check |
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