fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
R7/2k3p1/5p2/1r1p2p1/1qp3P1/7P/Q4PK1/8 b - - 3 54 | Qc5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1Q5r/p3nkBp/b3p1p1/2p2p2/8/8/PP2KPPP/R6R w - - 1 20 | Kf3 | Is the move from h1 to f7 legal? | No | legality |
r1bqr1k1/pp1nbppp/2n1p3/2ppP1B1/3P1PQP/2N2N2/PPP3P1/R3KB1R w KQ - 2 10 | O-O-O | What piece is on d2? | Empty | occupancy |
8/1p5k/p1b5/8/8/1P2Q3/P5PK/5r2 b - - 0 40 | Rf7 | What is the material balance in this position? | White is up 2 pawns of material | material |
rn2r1k1/p3Bpbp/3P2p1/1R4N1/2p5/8/PP2B1PP/5n1K w - - 0 23 | Bxc4 | What is the material balance in this position? | Black is up 5 pawns of material | material |
2r5/4b1pk/4p2p/qp1nPp2/3P3P/P1p2QP1/2R2P2/2BR2K1 w - - 0 35 | g4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
rn1qkb1r/pp2pppp/5n2/3p4/3P1Bb1/2N2N2/PPP2PPP/R2QKB1R b KQkq - 2 6 | Qa5 | Are there any open files in this position? | No | files |
rnb3k1/ppp4p/4p2r/3p1p1p/3P1N2/2P1P1q1/PP6/RNBQ1R1K w - - 0 9 | Rg1 | Does White have any isolated pawns? | No | structure |
6kR/5p2/4bPp1/2b1p1P1/4P3/8/p1q5/7K b - - 3 45 | Kxh8 | What is the material balance in this position? | Black is up 11 pawns of material | material |
1r2r3/p2bpp1R/3p1kp1/1p1P4/6P1/P4P2/1PP5/1K3B1R b - - 1 23 | b4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rnbq2k1/pp1nprbp/3p4/4P3/5P2/2p2N2/PPP3P1/R1BQKB1R w KQ - 0 11 | Bc4 | Does Black have any isolated pawns? | Yes: h7 | structure |
8/5p2/3n1p1p/p7/1k4P1/2NK3P/8/8 w - - 0 19 | Kc2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r4rk1/4ppbp/p2pb1p1/1p6/n2NP3/nP3P2/P5PP/2KRQB1R w - - 3 19 | bxa4 | What is the material balance in this position? | White is up 2 pawns of material | material |
rnbq1rk1/1pp1bpp1/7p/pP1pP3/P1BP1n2/1Q3NP1/3N1P1P/R1B1K2R w KQ - 0 15 | gxf4 | What piece is on c3? | Empty | occupancy |
5n2/4k3/4P3/3P1K2/3B4/1p6/8/8 w - - 1 9 | Bf6+ | Does Black have any passed pawns? | Yes: b3 | structure |
4rrk1/1p3p2/p6p/3p1Npq/PPnNp3/2P1P1P1/6QP/4RR1K b - - 3 28 | Qg6 | Are there any open files in this position? | No | files |
r1b1nrk1/ppb2ppp/2pp4/4P3/B6q/2PNN3/PP1PnPPP/R1BQ1R1K w - - 3 14 | Qxe2 | Is the move from a1 to b1 legal? | Yes | legality |
3r2k1/pbq2p1p/1pp2Rp1/4p3/2P1P3/5NP1/PPQ2P1P/3N2K1 b - - 0 19 | Qe7 | What is the material balance in this position? | White is up 3 pawns of material | material |
r2q1rk1/pp1nppbp/2p2np1/3p4/PP3Pb1/N3PN2/1BPPB1PP/R2Q1RK1 b - - 2 9 | Bxf3 | Does Black have any passed pawns? | No | structure |
6k1/2q2pp1/2nB2rp/p2p4/1ppPb1Q1/2P4N/PP3PPP/R4NK1 b - - 0 25 | Rxg4 | Is the Black king in check? | No | check |
rbq1krbn/pp2pppp/2n5/8/8/6N1/PPPP1PPP/RBQNKRB1 b KQkq - 1 4 | f5 | Identify any Black knight outposts on the board. | None | outposts |
6k1/1p3p2/4p1q1/p1prP1pR/3P2P1/PP4K1/5P2/2Q5 b - - 3 41 | Kf8 | Identify any White knight outposts on the board. | None | outposts |
4r3/5k2/p2p2p1/1pp1b1Q1/3q4/P3RP1P/6P1/4RK2 b - - 1 4 | Bf6 | What piece is on c4? | Empty | occupancy |
r2q1rk1/1p3ppp/p1p1pn2/2bp4/5P2/P1NP3P/1PP1Q1P1/R1B2RK1 w - - 5 16 | e7c5 | Is the White king in check? | Yes | check |
rnbqk2r/ppp1ppbp/3p2p1/8/3PP1n1/2N1B3/PPPQ1PPP/R3KBNR w KQkq - 4 6 | Bg5 | Identify any White knight outposts on the board. | None | outposts |
r4bk1/3b1pp1/2p4p/2Pp4/1P1N4/4PpP1/3nB1KP/8 w - - 0 29 | e4f3 | Is the White king in check? | Yes | check |
3r2k1/3B1ppp/1P1n4/2pPp3/8/2K2P2/6PP/R7 b - - 2 36 | Rxd7 | Does Black have any passed pawns? | Yes: c5 | structure |
3Q2r1/5qk1/1p6/pP1PpB1p/P3Pp2/2p2P2/8/5K2 w - - 12 51 | Qxb6 | Is the Black king in check? | No | check |
6k1/R6p/2p1rp2/2B3p1/2n5/6P1/1P2PPKP/8 w - - 3 28 | Bd4 | Is the White king in check? | No | check |
rnb1k1nr/pppp1ppp/8/2b1N3/3Pq3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5 | h4e4 | Is the White king in check? | Yes | check |
4K3/8/5kP1/pB6/P7/8/8/3r4 w - - 13 57 | Bd7 | Does White have any isolated pawns? | Yes: a4, g6 | structure |
k1b4r/p3PB2/1bpN3p/2n1P1p1/1pp5/6B1/PP4PP/3R2K1 w - - 3 30 | Nxc4 | Is the move from g2 to f4 legal? | No | legality |
8/K7/7p/5kp1/4pp2/P2n4/P1R2P1P/8 b - - 0 1 | Nxf2 | Identify any White knight outposts on the board. | b4 | outposts |
b1r5/2r1kp2/3p1p1p/1p2pP1N/1Pq1PbPP/p1PR4/P1B1Q3/1K2R3 b - - 2 32 | d5 | Is the move from f6 to f6 legal? | No | legality |
8/8/2N5/8/1P6/3K1k2/7p/6Q1 w - - 0 50 | h3h2 | What is the material balance in this position? | White is up 12 pawns of material | material |
2kr3r/1p3p2/p1b1p1n1/2qpP3/P1nN1PP1/2PQ3P/4B3/1RB1K2R w K - 7 24 | Nxc6 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rnb1k2r/p4pp1/2pbpq1p/1p2N3/2pP4/P1N1P3/1P3PPP/R2QKB1R w KQkq - 2 10 | f4 | Identify any White knight outposts on the board. | None | outposts |
6n1/p2Bp1kp/3p1pp1/n1pP2P1/5P1K/P1r4P/7r/1QB5 b - - 0 50 | f5 | Identify any Black knight outposts on the board. | d4 | outposts |
8/8/4b3/2B3Pp/3P3P/1pK2k2/8/8 b - - 0 61 | Kg3 | Does White have any isolated pawns? | Yes: d4 | structure |
r2qk1r1/1b1n1pPp/p3p3/2b5/B4Q2/2p2N2/PP3PPP/R1B2RK1 b q - 2 16 | Rxg7 | Are there any open files in this position? | Yes: d | files |
r3k2r/p2n1pp1/2bqp2p/3n4/2Q5/5N2/PP3PPP/RBB2RK1 w kq - 3 19 | b3 | Is the move from a1 to g2 legal? | No | legality |
r3rn2/p7/3qp2k/1p5n/3P1p1p/1PPQ1P2/P1B2P2/6RK w - - 2 31 | Qh7+ | Is the Black king in check? | No | check |
2b2rk1/3n1p1p/6p1/q3P3/1pP1nP1P/4Q3/r3N1P1/1N1RKB1R b K - 2 23 | Ndc5 | Does Black have any passed pawns? | Yes: b4 | structure |
2k3r1/pp1b1p2/5P2/q2p2pP/P1pP1n2/2P2Q2/2PK1P2/6RR w - - 0 30 | h6 | Identify any Black knight outposts on the board. | f4, h4 | outposts |
rb3rk1/pp5p/3q1p2/2pN4/2Pp2Q1/3P2P1/PP3P1P/R3RbK1 b - - 1 18 | d1g4 | Is the Black king in check? | Yes | check |
r1bqr1k1/p2n1pp1/1pn1p3/2ppP1PQ/3P1N2/2P5/PP3PP1/R1B1K2R b KQ - 0 14 | Kf8 | Are there any open files in this position? | Yes: h | files |
r1b1k1nr/2p2p1p/ppp2bp1/8/3Pq3/2Q2N2/PPP2PPP/RNB2RK1 b kq - 0 11 | Be6 | Identify any White knight outposts on the board. | None | outposts |
r3k2r/pp3ppp/2pbp3/6Bn/3P4/2P2P1N/PPK3PP/3R3R b kq - 2 17 | h6 | Is the Black king in check? | No | check |
rnbqkb1r/pp2pp1p/2p2np1/3p4/2PP4/2N1P3/PP3PPP/R1BQKBNR w KQkq - 0 5 | f4 | What piece is on d5? | Black Pawn | occupancy |
1n1q1rk1/r4ppp/pp1pp3/4b3/2P5/2N2BP1/PP1QPP1P/2RR2K1 b - - 6 15 | Qc7 | Are there any open files in this position? | No | files |
3r3k/1p5p/3p2p1/1p1nn1N1/1P1p1r2/7P/1R1N1PP1/3R2K1 b - - 0 33 | Re8 | What piece is on c5? | Empty | occupancy |
r5k1/bp4p1/p1p1R2p/2Np4/PP6/R6P/6PK/2B2r2 b - - 1 24 | Rxc1 | Is the move from h6 to f3 legal? | No | legality |
4Qbk1/1bq2p1p/ppNp2p1/3P2P1/P1P5/1n5B/7P/6BK b - - 3 35 | Na5 | Does Black have any isolated pawns? | Yes: d6 | structure |
rnb2r2/ppp1b1k1/7p/3N4/2BPPBnq/5QR1/PPP5/R3K3 b Q - 5 17 | Bg5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3r1rk1/7p/p3bqp1/1pp5/3P4/3QBP2/PPB4P/R4NK1 w - - 0 21 | Nd2 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/k1b2p2/p1r1p1pp/2pr4/R1N2P1P/2P3P1/PP2KP2/4R3 w - - 12 42 | Rh1 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r3kb1r/1b3pp1/p2ppq1p/8/1p2PP2/2N1Q3/PPP3PP/2KR1B1R w kq - 0 14 | Nb5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
8/1k3p2/1pb1p3/p3P3/P4P1r/4K2P/R1P5/5B2 w - - 2 35 | Ra1 | Does White have any isolated pawns? | Yes: a4, c2, h3 | structure |
r2r2k1/1p1b1ppp/1q2pn2/8/p1PN4/5B2/PP2QPPP/3RR1K1 b - - 3 21 | Be8 | Is the move from a8 to d2 legal? | No | legality |
2k5/p1p2p1p/6p1/2P1p3/6R1/2N5/PP1K3r/7B w - - 0 25 | h3h2 | Is the White king in check? | Yes | check |
r1q1r1k1/1pb2npp/1Rp3b1/P1Ppp3/P4P2/2BNP3/2BQ2PP/5RK1 w - - 0 20 | Rb3 | What piece is on c1? | Empty | occupancy |
2rrnbk1/p1q2pp1/4p2p/NPp1P2b/4NP2/P1Q3P1/7P/2R1RBK1 b - - 4 29 | Qb6 | Does White have any isolated pawns? | No | structure |
r7/1p2bbk1/2p1npp1/2n1p3/p1P1P1P1/P1N1BP2/1P2B1K1/3R3N b - - 7 29 | Be8 | Is the move from e6 to g5 legal? | Yes | legality |
4r2k/2bR4/4p2p/5p2/p1B5/1Pr3P1/7P/5R1K w - - 0 39 | Rxc7 | Does Black have any isolated pawns? | Yes: a4, h6 | structure |
rnb1kbnr/pppp1Bpp/5q2/4p3/4P3/8/PPPP1PPP/RNBQK1NR b KQkq - 0 3 | Qxf7 | Identify any Black knight outposts on the board. | None | outposts |
3Q4/pq3pp1/1k5p/1B6/3N1N2/P3P1P1/1P3P2/3R2K1 b - - 8 38 | h8d8 | Is the Black king in check? | Yes | check |
2Q5/6q1/1k6/4K1pp/8/6PP/2P5/8 w - - 5 56 | g6g7 | Is the White king in check? | Yes | check |
r3k2r/p1pp1ppp/bnp1q3/4P3/2P1Q3/1PB5/P4PPP/R3KB1R b KQkq - 0 13 | d5 | Does Black have any isolated pawns? | Yes: a7 | structure |
2kb1q2/1p5p/2r5/8/Q3P1b1/P2P4/BPP3P1/R3K3 b Q - 4 30 | Bh4+ | Does Black have any isolated pawns? | Yes: b7, h7 | structure |
2b2rk1/6qp/p1Rp1r2/P1pPp3/2P1Bp1n/3Q4/4NPPP/1R4K1 b - - 7 28 | Bf5 | What piece is on c1? | Empty | occupancy |
r3r3/1p3kp1/p1b2p1p/q1b1pP2/2p1P3/2N1B1Q1/PPPR2PP/3R2K1 b - - 2 24 | Rad8 | Is the Black king in check? | No | check |
r2q3k/p7/3p1np1/2p3B1/2N1pPn1/1Q6/PP4P1/2KR4 w - - 0 26 | Ne5 | Identify any Black knight outposts on the board. | d3, d4 | outposts |
8/8/6p1/6kp/1p2PPp1/1Pq5/P3RP1P/4R1K1 b - - 0 40 | g3f4 | Is the White king in check? | No | check |
3r4/1kp3q1/p2bBp2/1p6/3p3p/2PP4/P2Bb1PP/R2Q3K w - - 0 26 | Qxe2 | Is the White king in check? | No | check |
3r1r1k/p1p1q3/1p1p1n1p/P3p1p1/3PPpPP/2P2P2/2P2Q2/R3RBK1 b - - 0 27 | Qe6 | What piece is on g7? | Empty | occupancy |
2k2qr1/p1p2b2/1p2pQ1K/8/P1p2R2/6B1/2B4P/8 w - - 7 41 | Kh7 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
5R2/pp6/2p3Rp/4B1k1/3P4/1P4Pb/P6P/3B3K b - - 0 36 | g7g6 | Is the Black king in check? | Yes | check |
r7/2q1p1kP/p1bpPn2/2p5/2p5/2N1Q3/Pr2B1PP/R4RK1 w - - 0 24 | h8=Q+ | Is the move from e3 to a6 legal? | No | legality |
4r3/7R/8/8/8/8/3K2p1/6k1 b - - 1 59 | Re5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqk2r/3p1ppp/1p2pn2/p7/1pPPP3/3B1N2/PP3PPP/RN1QK2R b KQkq - 0 8 | d6 | Does Black have any isolated pawns? | No | structure |
8/2k5/p1b1N2R/3p4/3Pp3/6P1/6PK/8 b - - 2 41 | g5e6 | Is the Black king in check? | Yes | check |
rnbqk1nr/ppp2ppp/4p3/4P3/1b1p4/3P1N2/PPP2PPP/RNBQKB1R w KQkq - 2 5 | f8b4 | Is the White king in check? | Yes | check |
2q4r/p3nkpp/2n5/6B1/1p6/5Q2/PPP2PP1/4R2K b - - 1 27 | f4g5 | Is the Black king in check? | Yes | check |
r1b2rk1/p1pqbppp/1p6/3N4/2PP2n1/5N2/P4PPP/R1BQ1RK1 b - - 2 15 | Bb7 | Identify any Black knight outposts on the board. | a5 | outposts |
2kr2nr/ppp2ppp/2n5/4P3/1qQ1P3/5N2/PP1N1PPP/R3K2R b KQ - 0 11 | Nxe5 | Is the White king in check? | No | check |
4k3/2p1Pp2/2p2Pp1/6P1/3PR3/6r1/1R3K1r/8 w - - 7 43 | h3h2 | Is the Black king in check? | No | check |
4n3/1b1r1pkp/2p2n1q/1pP1Q3/1P6/5B1P/rB2RPP1/2R3K1 w - - 8 32 | Rce1 | What piece is on c1? | White Rook | occupancy |
4rr1k/ppq3p1/3b2Q1/2pn4/1n3P2/8/PPP1R1PP/RNB3K1 b - - 0 21 | f5g6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
7k/2p3p1/3p3p/1P1P4/4Pp2/4nP1P/rq4PK/2R1QB2 w - - 6 38 | Rb1 | Identify any White knight outposts on the board. | a6 | outposts |
7k/5prp/2p1bBRP/p7/1p6/8/PPP5/2K5 w - - 3 6 | Rxg7 | Is the White king in check? | No | check |
r1q1kbnr/pb4pp/np2pp2/1Np1N1BQ/2PP4/3B4/PP3PPP/R4RK1 b kq - 1 15 | d1h5 | Is the White king in check? | No | check |
r1b2rk1/pp2ppbn/3p2p1/q1pPn3/2P1P2p/2N1BP2/PP1QB1PP/R3KN1R w KQ - 2 13 | Rc1 | Identify any Black knight outposts on the board. | None | outposts |
2kr3r/pp3ppp/2pBnn1q/8/2b1BP2/4QN2/1P1R3P/2K1R3 w - - 2 21 | Bxc6 | Are there any open files in this position? | Yes: d, e | files |
2r3k1/6pp/p2B1p2/P3p3/R2p4/3K1r2/7P/8 w - - 0 33 | f2f3 | Is the White king in check? | Yes | check |
5rk1/p2b1ppp/2n1p3/3pP3/8/QrP5/P1K1BbPP/qN1R4 w - - 0 20 | b8b3 | What is the material balance in this position? | Black is up 9 pawns of material | material |
1r2r1k1/R4ppp/2b5/8/3Pq3/1PB2P2/6PP/3Q1K1R b - - 0 24 | Qe3 | Is the move from f7 to d7 legal? | No | legality |
1q3r1k/3nrppp/2R5/3Bp3/PPQp4/3R2P1/4PP1P/6K1 w - - 5 29 | a5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2rq1rk1/pb3ppp/4pP2/1P2P3/3pnQ1P/P4N2/1PPK1P2/R4B1R w - - 1 21 | c5e4 | Is the Black king in check? | No | check |
rnbqr1k1/pp3pbp/3p1np1/2pP4/4P3/2N5/PP1NBPPP/R1BQ1RK1 b - - 6 10 | Na6 | What piece is on b6? | Empty | occupancy |
8/8/B3pnk1/P4p2/3B1Pnp/4P3/4K1b1/6N1 b - - 0 49 | h3 | Does White have any isolated pawns? | Yes: a5 | structure |
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