fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
3rr3/R4Q2/1p2nR2/2kqp3/P1pp4/6P1/1P1B3P/6K1 b - - 3 34 | c3 | Is the a-file open, semi-open, or closed? | semi-open for Black | files |
8/p4pk1/1pb2n1p/2p3p1/P3P1P1/2q2PB1/4B2P/3Q2K1 w - - 1 30 | Qd6 | Is the move from d1 to d8 legal? | Yes | legality |
2Q2bk1/p4p1p/4p1p1/8/q2p4/6P1/4PP1P/1R4K1 b - - 1 30 | Qa3 | Identify any White knight outposts on the board. | None | outposts |
8/2pNn3/p5k1/P7/1p2P3/1N1P2Pp/1PP2RK1/4q3 w - - 0 36 | Kf3 | Identify any White knight outposts on the board. | e4, f4, f5, h4 | outposts |
1rb1k2r/p1pp2pp/3nn3/K3Q3/2p5/2N5/PPPP1bPP/R1B4R b - - 2 17 | Rb6 | Does White have any passed pawns? | No | structure |
r2qr1k1/1b1nbppp/pp1ppn2/8/2PNPP2/1PNB4/PB2Q1PP/R4RK1 w - - 1 13 | Rad1 | Is the move from a1 to c1 legal? | Yes | legality |
rq1r1bk1/5p1p/1pb3p1/pNppn3/P1P5/BP2P3/2R1BPPP/3RQ1K1 w - - 0 25 | Rcd2 | Is the White king in check? | No | check |
r1b1kb1r/2qn1ppp/p1n1p3/1pNpP3/1P1N1P2/2PBB3/P5PP/R2QK2R b KQkq - 1 13 | Nxc5 | What is the material balance in this position? | Equal | material |
r5k1/5p1p/4b1p1/8/1r6/5BP1/5P2/3R2K1 w - - 0 32 | Bxa8 | Is the move from f2 to b4 legal? | No | legality |
r1bqnrk1/ppp3b1/3P2n1/3Pp1pp/P3Pp2/2N2P2/1P2BBPP/R2QNRK1 b - - 0 15 | cxd6 | Identify any White knight outposts on the board. | e6 | outposts |
1r1brnk1/1b3p1p/pq1p3Q/1p2p1P1/2n1PB2/PNN4R/1PP3BP/R6K w - - 0 29 | g6 | Does Black have any passed pawns? | No | structure |
8/1pp1k1pp/1p2p3/1r6/3pP3/P2P4/1PP2RPP/5K2 w - - 8 23 | b3 | Is the f-file open, semi-open, or closed? | open | files |
rk5r/1p2B3/1q6/pbNpPQ2/3P3p/8/6PP/1R4K1 w - - 3 33 | Qd7 | Is the White king in check? | No | check |
8/3nppkp/3p2p1/3P4/3P4/4K1P1/5P1P/5B2 w - - 1 40 | Bg2 | Does White have any passed pawns? | No | structure |
r1b1r1k1/pp3ppp/1qnb4/3pN3/3Pn3/1P1NP1P1/1B3PBP/R2Q1RK1 b - - 8 18 | Na5 | Is the move from f7 to f5 legal? | Yes | legality |
1Q3b1r/p3pk1p/2q1p2p/2p4b/2Np4/1P1P3P/2P2P2/R4KN1 b - - 2 20 | Qd5 | What piece is on g2? | Empty | occupancy |
rn1q1r2/4b1pk/2p3p1/pp2P3/2pPQ1P1/2P2N1P/P7/1RB2RK1 w - - 2 21 | Rxb5 | Is the White king in check? | No | check |
rn2kbnr/1p3ppp/p2pq3/2p5/P3P3/1Qp2N2/1P3PPP/RNB2RK1 w kq - 0 10 | f6e6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3r2k1/1bqp1ppp/p1pRr3/2P1p3/8/8/PPQ1BPPP/R5K1 w - - 1 23 | Rad1 | What piece is on d1? | Empty | occupancy |
6k1/1q4pp/r3p3/3pP1P1/N2Q3P/2P5/KP1n4/2R2R2 b - - 2 34 | Qb3+ | What piece is on c2? | Empty | occupancy |
r1b1k3/ppR2p1p/q3p1rB/7Q/3NP3/3n4/P4PPP/6KR w q - 7 18 | Be3 | Does Black have any passed pawns? | No | structure |
rnbqk2r/pppp1ppp/4pn2/8/2PP4/2P2N2/P3PPPP/R1BQKB1R b KQkq - 0 5 | d6 | What is the material balance in this position? | Equal | material |
r1bqkb1r/pp3ppp/2nppn2/1N6/4P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7 | Bf4 | Is the move from c3 to b6 legal? | No | legality |
8/p5bk/2p3pp/3p4/5N2/Pb3PR1/KP5r/8 w - - 0 34 | c2b3 | Is the White king in check? | Yes | check |
r2qr1k1/pn1bbppp/2pp4/8/8/1P3N2/PBPNQPPP/R3R1K1 w - - 4 14 | Ne4 | Does White have any passed pawns? | No | structure |
2Q3k1/p3bppp/1q2p3/4P3/1p1r4/6P1/PP2PPBP/3R2K1 b - - 0 21 | Rd8 | What piece is on a2? | White Pawn | occupancy |
rnbqkbnr/pppp1ppp/8/4p2Q/4P3/8/PPPP1PPP/RNB1KBNR b KQkq - 1 2 | Nc6 | Are there any open files in this position? | No | files |
7r/2p1bppp/2p1k3/2P1n3/3QN1q1/8/PP3P1P/R1BR2K1 w - - 8 24 | Kh1 | Is the White king in check? | Yes | check |
r1Nk1b2/1b2q1pr/1np1Qn1p/p3p3/Pp2PP1N/8/1PP4P/2KR2R1 b - - 1 22 | Nfd7 | Is the Black king in check? | Yes | check |
5qk1/1nr4p/1pN1p1p1/1Pn1NpP1/p1PQ1P2/P6P/2K5/3R4 b - - 0 37 | Nb3 | Does White have any isolated pawns? | No | structure |
r1r3k1/1P2qp2/2p3pb/2P1p3/p1QpP2n/P6P/5P2/1RR4K b - - 3 40 | Bxc1 | Are there any open files in this position? | No | files |
r7/5p2/2p2Rk1/p3P1P1/1p1P4/4K3/PP6/8 b - - 3 38 | f4f6 | Is the Black king in check? | Yes | check |
r3k2r/2qb1pbp/p2p1P2/2nP4/1p1N4/5Q2/PPP4P/2KR1B2 w kq - 0 20 | Re1+ | What piece is on c5? | Black Knight | occupancy |
3R4/5pk1/6pp/8/3P4/7P/6rK/8 w - - 0 52 | c2g2 | Is the White king in check? | Yes | check |
r2r2k1/1R2ppbp/2n3p1/p1NpP3/2nP4/1N2B2P/5PP1/R5K1 b - - 12 26 | Rdb8 | Are there any open files in this position? | Yes: b, c | files |
2k5/ppp3pb/2n3p1/3P4/4p3/2P5/PP1R4/2K3q1 w - - 0 26 | e3g1 | What is the material balance in this position? | Black is up 12 pawns of material | material |
6k1/p1p3pp/6r1/3p4/3P2b1/2P2N2/PP3qP1/R5K1 w - - 0 24 | Kxf2 | Does White have any isolated pawns? | Yes: g2 | structure |
r4r2/ppp2ppQ/1nn3k1/5bN1/3q4/8/PPP2PPP/R1B2RK1 b - - 7 5 | Kf6 | Is the White king in check? | No | check |
r4k1r/pp4pp/1qp1Qb2/8/1nPP4/3B3P/PP3PP1/R1B3K1 w - - 1 18 | Bf4 | Is the move from d3 to b1 legal? | Yes | legality |
2k1r3/Qbpp2p1/N1p5/4p3/P1P5/1P3rPp/4qP1P/5RKB b - - 3 26 | Kd8 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
2bqr1k1/bp3p1p/2p2p1r/p2p4/2P1N3/1P1QP3/P3BPPP/R4RK1 w - - 0 17 | Ng3 | Is the move from a1 to b1 legal? | Yes | legality |
4r3/1p5k/4pR1B/p2pr3/8/2P5/PPK5/8 w - - 0 36 | Bd2 | Is the move from b2 to d8 legal? | No | legality |
r3k2r/1b2n1pp/p4n2/1p6/5B2/1BN5/PPP2PPP/2K1R3 w - - 14 26 | Bd6 | Is the move from h2 to d2 legal? | No | legality |
r3r1k1/1p1np3/2np2PB/q7/p1b1PP1Q/5B2/PPNb4/1R3RK1 w - - 2 25 | Bg7 | What piece is on g4? | Empty | occupancy |
r7/pp1rq2k/2ppbbp1/7p/1NP1PB2/1P5P/P2Q2P1/2R2RK1 w - - 1 28 | Nd3 | What piece is on g3? | Empty | occupancy |
r1bqk2r/pp3pp1/2nb1n1p/2p1p3/2Pp4/3PPNP1/PP3PBP/RNBQ1RK1 w kq - 1 9 | Nbd2 | Identify any White knight outposts on the board. | None | outposts |
6r1/8/4b3/R2pBk1p/3P1P1K/8/PP6/8 w - - 1 47 | Kxh5 | Are there any open files in this position? | Yes: c, e, g | files |
r3r3/pp5p/1k3p2/2b4Q/5B2/N1R5/PP4PP/5K2 w - - 3 26 | c6b6 | What is the material balance in this position? | White is up 7 pawns of material | material |
r3r3/1p4p1/p3P2p/P1p5/2BbQqk1/8/5P1P/1K1R4 w - - 2 27 | Rg1+ | Does White have any isolated pawns? | Yes: a5, h2 | structure |
3q4/kp5p/pQpb4/P4r2/2BPp3/2P3P1/1P5P/1K6 b - - 1 30 | Qxb6 | Does White have any passed pawns? | No | structure |
r6r/pp3R2/2nkp3/4b1p1/7p/2N4P/PPK3PB/R7 w - - 2 22 | d7d6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5k2/6R1/3r2pK/P7/6P1/6P1/8/8 w - - 5 59 | Rxg6 | Identify any Black knight outposts on the board. | None | outposts |
2b1r1k1/p4ppp/2B5/8/3p4/P5P1/1r1KPP1P/R6R w - - 1 22 | b8b2 | Is the Black king in check? | No | check |
r3k2r/p2n2pp/b1p1pn2/2q5/2P1P3/P2B1N2/2QB2PP/R3K2R b KQkq - 2 16 | Ng4 | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/1bqn1pb1/p2p2p1/1pnPp1Bp/P1p1P2N/2P3NP/1PBQ1PP1/R4RK1 b - - 3 22 | Nf8 | Is the move from b5 to a4 legal? | Yes | legality |
6k1/2p3pp/p1r5/1p1p4/1P6/2P5/P3r2P/R3BNK1 b - - 2 27 | Rg6+ | Does White have any isolated pawns? | Yes: h2 | structure |
2R5/1b2kppp/p2bpn2/8/B2N4/4P3/1P1B1PPP/6K1 b - - 0 19 | Bxc8 | What is the material balance in this position? | White is up 5 pawns of material | material |
2r2r2/ppQqkp1p/8/1p3P2/6n1/2P5/P4PPP/5RK1 w - - 0 23 | f6+ | Is the Black king in check? | No | check |
8/pp6/7P/8/3p4/1PBn1kP1/P3p3/6K1 w - - 0 7 | Bd2 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
6k1/N5pp/5p2/P7/1P1R4/5P2/1n4PP/2r3K1 w - - 1 37 | c2c1 | Is the White king in check? | Yes | check |
r2qkb1r/pp1npp1p/6p1/1Q1P4/8/2N2P2/PP3P1P/R1B1K2R w KQkq - 0 14 | O-O | Is the move from b5 to a4 legal? | Yes | legality |
4k2r/1p2bppp/r1np4/q2Qp3/8/4B3/PPP1NPPP/R4RK1 w k - 3 14 | Qb3 | Is the move from g2 to f1 legal? | No | legality |
2rq1rk1/5pp1/4b2p/p7/3n4/Q7/P2BBPPP/3RR1K1 w - - 0 22 | Bxa5 | Is the move from g2 to e2 legal? | No | legality |
8/p2k1ppp/3pp3/P7/1P3P2/1K2r1P1/7P/7R w - - 1 29 | e4e3 | Is the White king in check? | Yes | check |
4r3/1pk1r2p/2p3p1/Q1P2p2/3b4/5B2/b5PP/4R2K b - - 7 34 | Kc8 | Identify any Black knight outposts on the board. | e4 | outposts |
5rk1/5pRp/2p5/r7/1n6/2B5/PPP5/2K5 b - - 0 1 | Kh8 | What piece is on e8? | Empty | occupancy |
r1bqk2r/pppp1ppp/2n2n2/2b5/2BpP3/2P2N2/PP3PPP/RNBQK2R w KQkq - 0 6 | b4 | Are there any open files in this position? | No | files |
r2q1rk1/1bppbppp/p4n2/1p2N3/4P3/1P5P/1PPP1PP1/RNBQR1K1 w - - 1 11 | Nc3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/6p1/p4b1p/1ppq1p2/1n3B2/1P1P1PNP/1PP2PK1/R1Q1R3 w - - 0 21 | Nh5 | Are there any open files in this position? | Yes: e | files |
rn2kbnr/pp3pp1/2p1p3/q2pP2p/3P3P/3Q4/PPPN1PP1/R1B1K1NR w KQkq - 0 8 | Nf3 | Identify any White knight outposts on the board. | None | outposts |
r3k2r/ppqn1pb1/2p1p3/6N1/3P4/2N3P1/PP1QbP1P/R4RK1 w kq - 0 16 | h5e2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2k1r3/pp6/2p1N1pp/3r4/8/1P1n1P2/P2R2PP/3R2K1 b - - 5 30 | Nb4 | Identify any Black knight outposts on the board. | d5 | outposts |
rn2k1nr/p1pp2b1/1p2pq2/7p/5P1P/3PR1p1/PPPQ4/RNB1K1N1 b Qkq - 3 14 | e2e3 | Identify any Black knight outposts on the board. | f5 | outposts |
r1b1k2r/ppppqppp/2n2n2/8/2B1P3/2Q2N2/P4PPP/R1B2RK1 w kq - 1 11 | Ba3 | Does White have any isolated pawns? | Yes: a2 | structure |
r1q2r1k/pp3p2/3P2p1/2n1P1BN/3n3Q/1B3P2/PP5P/3K4 b - - 0 26 | Nxf3 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/pp1nppbp/6p1/1Q1P2B1/8/2N2P2/PP3P1P/R3R1K1 b - - 5 16 | f6 | Does Black have any isolated pawns? | No | structure |
1nkrbrqb/pppppp1p/1n6/6p1/2P5/2NP2P1/PP2PP1P/N1RKBRQB b KQ - 0 4 | d6 | Identify any White knight outposts on the board. | None | outposts |
3r2k1/2q2pp1/Q2b3p/3Pp3/1Pr5/P4N1P/5PP1/3RB1K1 w - - 1 29 | b5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/5kp1/p1b1p1np/1p3p2/3P3P/P2KPN2/1P3PPB/8 b - - 0 33 | Kf6 | Is the move from e6 to e8 legal? | No | legality |
2kr3r/pp4pp/2pbqn2/4N1B1/3Pp3/6P1/PPP1Q2P/2KR3R w - - 0 17 | Qc4 | Identify any White knight outposts on the board. | e5 | outposts |
r1bqr1k1/1p2bpp1/2p4p/p7/P2NR3/1Q4BP/1PP2PP1/R5K1 b - - 0 19 | Bf6 | What piece is on g4? | Empty | occupancy |
5r2/pb4kp/1p2B3/1Pp3P1/2Pr2n1/P4p1q/2Q2R1N/5R1K w - - 3 31 | g6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3k1Q2/p1p5/5n2/7p/2B1P1b1/1PqP2P1/P1PN3P/R3K1NR b KQ - 2 26 | f7f8 | Is the Black king in check? | Yes | check |
r2q1knr/ppN2p2/3p2p1/4p2p/2BNP3/3P3P/PPP2PP1/2Rb1RK1 w - - 0 12 | Nde6+ | What is the material balance in this position? | Black is up 5 pawns of material | material |
5k1r/pprbbp1p/4p3/1q2p3/2N2P2/3QP3/P3B1PP/3R1RK1 b - - 0 19 | exf4 | Is the move from f8 to a5 legal? | No | legality |
r3k2r/pp4pp/2pb1n2/3p4/4pB2/1B3bPq/PPPQ1P1P/R2N1RK1 w kq - 7 16 | Ne3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4k3/R7/4pp2/8/3P1K2/1r2P3/5P2/8 b - - 0 43 | Rb2 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/1p3pp1/pPp4p/P1Pp3q/3P1Pn1/2N5/2Q2PB1/R4RK1 w - - 0 27 | Rfd1 | What piece is on g6? | Empty | occupancy |
r4rk1/1pB1npp1/pn3q1p/2pP1b2/2B5/1P6/P3NPPP/R2Q1RK1 b - - 3 16 | Rfe8 | What is the material balance in this position? | Equal | material |
r2qk2r/pppn1ppp/3bpn2/3pNb2/3P1B1P/2N1P3/PPP2PP1/R2QKB1R b KQkq - 0 7 | O-O | What piece is on f5? | Black Bishop | occupancy |
8/8/7R/5p1P/5q2/8/k6K/8 w - - 2 52 | g4f4 | Is the Black king in check? | No | check |
8/3q1k1r/8/2rp1pQ1/p1p2P2/P1P1PB2/1P3P2/2KR4 w - - 2 41 | Rg1 | Is the move from e3 to c1 legal? | No | legality |
7r/5kp1/3p4/3P1pq1/8/6R1/5Qn1/1B4K1 b - - 1 46 | Qc1+ | Is the g-file open, semi-open, or closed? | semi-open for White | files |
8/p2R1k2/2p1r2r/7p/8/6P1/PP2nP1P/1K2R3 b - - 0 29 | d1d7 | Is the Black king in check? | Yes | check |
r5k1/pppb1ppp/3p1q1n/2b5/2P1NPP1/1P1QP2P/P7/R1B2RK1 b - - 0 18 | Qh4 | What is the material balance in this position? | White is up 2 pawns of material | material |
2q1r1k1/p4ppp/1r1Bb3/2p5/2Pbp3/1P2N1QP/P2R1PP1/5RK1 w - - 0 25 | Rxd4 | Identify any Black knight outposts on the board. | d3 | outposts |
r1qnk1r1/1p1b1p2/p3ppNp/1PPN4/3P4/P2BR3/5PPP/R5K1 w q - 1 3 | Nxf6# | Are there any open files in this position? | No | files |
rn1qkb1r/1b1p1ppp/pp2pn2/2p5/4P1P1/1PN2Q2/PBPP1P1P/2KR1BNR b kq - 0 7 | h6 | Identify any White knight outposts on the board. | None | outposts |
r3k2r/1p2bp2/7p/pNqn1p2/P2Q2PP/1P3PK1/2P1N3/4R2R b kq - 1 28 | e4d4 | What is the material balance in this position? | White is up 1 pawn of material | material |
6k1/8/p2p1rb1/3P4/4nP1Q/4K2P/8/8 b - - 4 47 | Nc3 | Does Black have any passed pawns? | Yes: a6 | structure |
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