fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rr4k1/1b1nqpb1/pp1N1npp/4p3/1p2P2B/2P2N2/P1Q2PPP/3RRBK1 w - - 2 18 | Bc4 | Does White have any isolated pawns? | Yes: a2, c3 | structure |
r1bq1b1r/ppp2Qpp/1k6/1N1Bp3/1P6/P2P4/5PPP/n1BK3R b - - 0 15 | c6 | Identify any Black knight outposts on the board. | d4 | outposts |
k7/R7/8/1p2p2p/1P2Pn1P/5Pq1/4r3/7K b - - 16 58 | Kxa7 | Identify any White knight outposts on the board. | e4 | outposts |
5rk1/R1p1b1pp/2r1pn2/4N3/1n2P3/6N1/1P3PPP/2B2R1K b - - 0 22 | Rc2 | What piece is on g4? | Empty | occupancy |
5nk1/4q1p1/4p2p/1Q6/4B3/4P1P1/5P1P/6K1 w - - 3 42 | Kg2 | Does White have any isolated pawns? | No | structure |
5rk1/p1Q2pbp/3p2pq/3P4/8/PP3P2/KP2R2P/4R3 b - - 0 27 | Qf4 | Is the move from g8 to b5 legal? | No | legality |
8/pKP3k1/8/8/7p/2q3p1/7P/8 w - - 0 56 | h3 | What piece is on g7? | Black King | occupancy |
2b2rk1/b4ppp/5r1q/pp6/3PP3/2PK2p1/BPR5/R1BQ2N1 b - - 5 31 | Qg6 | Is the move from b5 to g8 legal? | No | legality |
r3r1k1/2b2p2/p5pP/1ppnPq2/3p4/1P1P1N1P/1P1B2Q1/R3R2K w - - 0 35 | Ng5 | Is the Black king in check? | No | check |
2rq1r2/pb3pp1/1p5k/3pP1NP/5Q2/8/P4PP1/3nR1K1 w - - 1 23 | Ne6+ | Does Black have any isolated pawns? | Yes: d5 | structure |
1r6/2p2ppp/4n3/RkP5/1P6/P5P1/5P1P/6K1 b - - 8 36 | Kc6 | Is the e-file open, semi-open, or closed? | open | files |
4r1k1/p1p2pp1/1p1b4/3p1q1p/3P3P/6P1/PP1BRP2/4R1K1 w - - 0 24 | Rxe8+ | Does White have any passed pawns? | No | structure |
8/p7/1p1Q1p1k/2p3pp/2P1b3/q4N1P/5PPK/8 b - - 1 41 | Kg6 | Is the move from e4 to f3 legal? | Yes | legality |
r2q2k1/1p1n1pbp/2pN2p1/p2n4/3p4/2PB1QBP/PP3PP1/4R1K1 b - - 0 19 | N7f6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1r1q1bk1/3b2p1/n2p1pNp/p1pPp1nP/PBP1P3/5NR1/2B1QPP1/R5K1 b - - 0 32 | cxb4 | Are there any open files in this position? | Yes: b | files |
2R5/pp3Bpk/6p1/4B1P1/5P2/1P3q2/P6K/4b3 b - - 0 38 | Bg3+ | Is the move from e1 to h2 legal? | No | legality |
k4Rr1/pp5p/1n1B4/3pP3/3Pp3/7q/PPQ3P1/6K1 b - - 1 29 | f1f8 | Is the Black king in check? | Yes | check |
r1bqk2r/1p2bppp/p1npp3/7n/2B1P3/2N1BN2/PP2QPPP/R2R2K1 b kq - 5 11 | Bd7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r4rk1/1b1qbppp/p1n2n2/1ppPp3/P7/3P1NN1/BPPB1PPP/R2QR1K1 b - - 0 15 | Nxd5 | Identify any White knight outposts on the board. | c6 | outposts |
3rr1k1/pp1b1p2/1qp1pn2/3pP1p1/2P5/5BP1/PPQ1PP1P/2RR2K1 w - - 0 19 | exf6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2b3k1/5n1p/p2b1Q2/3Pn1Pp/pP6/8/B4P2/6K1 w - - 0 40 | Bb1 | Identify any Black knight outposts on the board. | b3, b5 | outposts |
rnr3k1/pp3ppp/5qB1/3p2N1/3P4/5N2/PP3KPP/RQB5 b - - 0 17 | fxg6 | Does Black have any passed pawns? | No | structure |
7r/1p1kppbp/1pnp1np1/8/2q5/8/PP2NPPP/R1BQ1RK1 w - - 0 15 | Nc3 | What is the material balance in this position? | Equal | material |
r1bq1rk1/1pp1bppB/p3p3/3nP3/1n1P4/2N2N2/PP1B1PPP/RQ2R1K1 b - - 0 15 | d3h7 | Is the Black king in check? | Yes | check |
6k1/pp4b1/4r1pp/1P2p3/4p3/6P1/P4PBP/5RK1 w - - 0 26 | Bxe4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r6b/pbk4p/1pnp2pB/4p3/8/3P4/PP3PPP/2R2RK1 w - - 2 21 | a5c6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r5k1/1R5R/3p1b2/2pP2P1/8/8/r6P/5K2 w - - 0 41 | gxf6 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r2B1b1r/pp3Bpp/1n1k4/2p1n3/8/2NP3P/PPP2PP1/3R1RK1 b - - 0 14 | Rxd8 | What is the material balance in this position? | White is up 2 pawns of material | material |
r3k2r/1R3pp1/p3p3/1b1pP2n/1P1P3P/3B1N2/3K1P2/6R1 b kq - 0 24 | O-O | Does Black have any isolated pawns? | Yes: a6 | structure |
r2q1rk1/pp2bbpp/4pp2/3n4/PnNP4/1BN5/1P1BQPPP/R2R2K1 w - - 2 17 | Ne4 | Is the Black king in check? | No | check |
rn3rk1/p5pp/1ppbp3/2P2p2/Q2PpP1q/P3P3/1P1N2PP/R1B2RK1 b - - 0 15 | Bc7 | Does Black have any passed pawns? | No | structure |
5r2/p4pk1/2P3p1/PP6/4p2p/8/2K5/3R4 b - - 0 39 | Rc8 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rnbqr3/ppp2kpp/5n2/3p4/1Q2P3/8/PB1N1PPP/R3K1NR w KQ - 1 10 | Ngf3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2qr1rk1/1pp1bppp/p1nn4/2N5/1PPp1P2/P2Q1B1P/1B2PP2/R3K2R w KQ - 14 18 | Rg1 | Identify any Black knight outposts on the board. | c3 | outposts |
r1bqk1nr/pp1ppp1p/2n3p1/8/2P5/2P5/P1N1PPPP/R1BQKB1R b KQkq - 0 7 | Nf6 | What is the material balance in this position? | Equal | material |
r3qrk1/pp3pbp/n2p1np1/2pPp3/2P1P1b1/2N2N2/PP3PPP/1RBQRBK1 w - - 0 12 | Be2 | Is the move from b2 to e8 legal? | No | legality |
8/p7/k4P2/3b2Np/3b2rP/1P1R2B1/P6K/8 w - - 2 53 | f7 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1r3k1/1p4pp/p3p3/PbPn1p2/2p1N3/4P1P1/1P3P1P/R1R2BK1 w - - 0 22 | Ng5 | Is the White king in check? | No | check |
rnbqk2r/pp2ppbp/3p1np1/2p5/2PP4/1P3NP1/PB2PP1P/RN1QKB1R b KQkq - 0 6 | Ne4 | Is the White king in check? | No | check |
1r1k4/2p5/p1nrp1p1/2P1p2p/Rp2P2P/3NKP2/2P3P1/R7 b - - 0 53 | Rxd3+ | What piece is on h4? | White Pawn | occupancy |
rnb2rk1/1pq1bppp/p2ppn2/8/3NPP2/2N1B3/PPP1B1PP/R2Q1RK1 w - - 3 10 | g4 | Are there any open files in this position? | No | files |
3r1k1r/4q1p1/pQ5p/3pR3/8/P7/1P3PPP/3R2K1 b - - 0 31 | Qd7 | Is the move from a6 to c4 legal? | No | legality |
r1bq4/pp3kp1/2p2nnp/2b1P2Q/8/2P5/PP4PP/RNB2R1K b - - 2 15 | Qd3 | Does White have any passed pawns? | Yes: e5 | structure |
5r2/5P2/7K/pp6/2pP4/1kP2R2/6P1/8 w - - 0 43 | a7a5 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/p1p3k1/1p2p3/3p4/b2Pn1p1/P1P1Pp2/8/1R2K1BB w - - 0 28 | Rb2 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r1b1k2r/ppp2ppp/2p5/2bq4/4n3/3N4/PPPPQPPP/RNB2RK1 b kq - 3 8 | O-O | Is the move from f7 to d8 legal? | No | legality |
5k2/4p3/B4n2/8/1P1b1r2/7P/P3KP1P/4B3 b - - 3 43 | Nd5 | Is the move from f6 to c3 legal? | No | legality |
r3kb1r/1p1n1pp1/p1p3p1/6q1/3P4/1B2PQ1P/PP3P2/R1B1K2R b KQkq - 1 15 | Bb4+ | Is the move from g7 to h6 legal? | No | legality |
N6r/1p2kppp/2n1bq2/p3p3/PB2P1n1/3P1P2/3Q2PP/R3KB1R b KQ - 0 16 | a3b4 | Is the Black king in check? | Yes | check |
r1bk3r/ppN2ppp/2np1q2/2b1p3/4P3/2N5/PPP2PPP/R2QKB1R w KQ - 2 11 | f3 | Does Black have any isolated pawns? | No | structure |
r3q1k1/p4pbp/5np1/2p5/3p4/5P1P/PP1B3P/RN1QK3 w Q - 0 19 | d8e8 | Is the Black king in check? | No | check |
r1b1kb1r/2qn1p2/p2ppP2/1p5p/3NP3/2N5/PPP1Q1BP/2KR2R1 b kq - 3 18 | b4 | Is the move from e8 to d8 legal? | Yes | legality |
r2qkbr1/1p1bppp1/p1np1n1p/8/4P3/Pp1P1N1P/2P2PP1/RNBQRBK1 w q - 0 11 | d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r2k1/pp3ppp/1q2pb2/3r4/3PQ3/1PBR4/P4PPP/3R2K1 b - - 8 23 | Qd6 | Is the c-file open, semi-open, or closed? | open | files |
r1bq1rk1/2p1bppp/p1np1n2/1p2p3/B3P3/2PP1N2/PP1N1PPP/R1BQ1RK1 w - - 0 9 | Bc2 | Are there any open files in this position? | No | files |
r1bq1rk1/1p3pb1/p4npp/4p3/2BpP2B/N2P4/PPP3PP/R2Q1RK1 b - - 1 14 | g5 | Does Black have any passed pawns? | No | structure |
r1bqk1nr/ppp1ppbp/2np2p1/8/2PP4/2N2NP1/PP2PP1P/R1BQKB1R b KQkq - 0 5 | Bg4 | Are there any open files in this position? | No | files |
r1b1kbnr/pp4pp/2p5/3pq3/2B1p3/2N5/PPP2PPP/R1BQ1RK1 w kq - 0 10 | Bb3 | Does White have any isolated pawns? | No | structure |
5r1k/6bp/2P3p1/3P3b/1PN1pB1q/2N1Q3/1R6/6K1 b - - 1 37 | Rxf4 | What piece is on b8? | Empty | occupancy |
1r1rb1k1/p3q1b1/1pp2p2/3n1Pp1/2NPN3/3BP3/PP6/1KQR3R w - - 0 24 | Qd2 | What piece is on a6? | Empty | occupancy |
5k2/5pp1/3bp2p/3n4/p2P4/3K1NPP/5P2/4B3 w - - 6 39 | Kc4 | Identify any White knight outposts on the board. | c5 | outposts |
r2q1rk1/pp3pp1/5n2/3pb1B1/6b1/3QPN2/PP3PPP/R4RK1 w - - 2 15 | Nxe5 | Is the move from f1 to h2 legal? | No | legality |
r4rk1/1b1qbppp/p1n2n2/1ppPp3/P7/3P1NN1/BPPB1PPP/R2QR1K1 b - - 0 15 | Nxd5 | What piece is on d2? | White Bishop | occupancy |
r1b2rk1/1p2bppp/p1nppn2/P5B1/4PP2/1NNBq3/1PP3PP/R2QK2R w KQ - 1 12 | b6e3 | Is the White king in check? | Yes | check |
r1bq1rk1/pp1pbppp/2n2n2/2p1p3/4P3/2P2N2/PPBP1PPP/RNBQ1RK1 w - - 4 7 | Re1 | Are there any open files in this position? | No | files |
8/8/8/8/3k4/3B1rN1/PPP5/2K1R3 w - - 7 45 | e3d4 | What is the material balance in this position? | White is up 9 pawns of material | material |
8/1R4p1/p2b4/2k1r3/8/1QP1p1P1/5PK1/2q5 b - - 1 43 | f7b3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2k3r1/p1bq1p2/4p1rp/1N2Q3/2RNP3/8/P4PPP/3R2K1 w - - 5 27 | d8g8 | What is the material balance in this position? | White is up 4 pawns of material | material |
r2q1rk1/1p3ppp/2p3n1/2PpN3/p2P4/P6Q/1P3PPP/2R1R1K1 w - - 4 23 | Nd7 | What piece is on b4? | Empty | occupancy |
2b1k2r/2q1npb1/2p3pp/4p3/pp2P3/1N1PBN2/2P2PPP/3QR1K1 w k - 0 16 | Nc5 | Is the move from b3 to c1 legal? | Yes | legality |
r1bqk2r/2ppbppp/p1n2n2/1p2p3/B3P3/3P1N2/PPP2PPP/RNBQ1RK1 w kq - 0 7 | Bb3 | Does White have any isolated pawns? | No | structure |
4r1k1/pp2qppp/2nr1n2/3p4/3P3Q/2bBBR2/PPP3PP/R4K2 w - - 0 17 | Bg5 | Does Black have any isolated pawns? | Yes: d5 | structure |
1r6/4k2p/2p1p1p1/2b2p2/p1P3P1/2B2P1P/P1K1P3/3R4 b - - 0 35 | fxg4 | Does Black have any isolated pawns? | Yes: a4, c6 | structure |
rn1qk2r/pb1pppbp/1p3np1/2p3B1/3P4/2PBPN2/PP1N1PPP/R2QK2R b KQkq - 0 7 | d6 | What piece is on d6? | Empty | occupancy |
8/ppkP4/2p2Np1/8/3n4/6nB/1P4K1/8 w - - 1 40 | Kxg3 | Is the Black king in check? | No | check |
8/8/6P1/4nk2/5n2/2K5/8/8 b - - 0 75 | Nfxg6 | Identify any White knight outposts on the board. | None | outposts |
2Q4k/6b1/7p/4p1p1/2P1PqP1/3P4/r4NK1/4RR2 b - - 2 39 | e6c8 | Is the White king in check? | No | check |
r2q1bk1/6p1/p3Rn2/1p3PB1/P2p4/2p2B1P/1n2QPPN/6K1 b - - 1 31 | Rc8 | Does White have any isolated pawns? | Yes: a4 | structure |
8/5p2/4k2p/1p2P2P/1P2K3/8/8/8 b - - 4 12 | f6 | Does White have any isolated pawns? | Yes: b4, e5, h5 | structure |
8/pp6/2p2n1p/2k2b2/2P2P2/PP5P/7K/3B4 b - - 0 31 | Kd4 | Identify any White knight outposts on the board. | e5 | outposts |
Q1b4r/p3kppp/nq2p3/3p4/3P4/P4P2/4PKPP/4RB1R w - - 2 18 | Rc1 | Does White have any passed pawns? | No | structure |
r2qk2r/ppp2p2/2b4p/4p1p1/4n3/2P2NB1/P1P2PPP/R2Q1RK1 w kq - 0 15 | Bxe5 | Is the move from g2 to e6 legal? | No | legality |
rnb1k2r/pp2pp1p/3p1np1/2pP4/4P3/2qB4/P1PN1PPP/1RBQK2R b Kkq - 3 9 | a6 | Are there any open files in this position? | No | files |
3rr1k1/1bp2p1p/p1n2K2/5p2/2p5/b7/4p3/8 b - - 1 37 | g5f6 | What is the material balance in this position? | Black is up 26 pawns of material | material |
r5k1/3b3p/r1p1p3/P1RpPpp1/R2K4/8/2P2PPP/8 b - - 1 25 | a1a4 | Identify any Black knight outposts on the board. | c4 | outposts |
2k4r/p2q4/1P3p2/2p5/1PPpPb2/3P1Brp/2N1Q3/R6K b - - 0 29 | Rhg8 | Identify any Black knight outposts on the board. | g5 | outposts |
5r2/4pN2/1p2P1k1/r2p1p2/3K1P2/pP4N1/R5P1/8 b - - 2 48 | Kf6 | What piece is on b6? | Black Pawn | occupancy |
r2qr1k1/ppp2pp1/1bnp1nbp/4p3/2P3P1/2NPP1NP/PP3PBK/R1BQ1R2 b - - 1 12 | Qd7 | Is the e-file open, semi-open, or closed? | closed | files |
5b1r/Q1k2ppb/7p/1p2PP2/8/3P3P/1qPN3K/5R2 b - - 2 27 | a6a7 | Is the Black king in check? | Yes | check |
r1N2r1k/pp1n1pbp/2p2np1/4p1B1/2P1P3/5N2/PP2BPPP/2KR3R b - - 0 13 | Rfxc8 | What is the material balance in this position? | White is up 3 pawns of material | material |
2rq1rk1/4bppp/2n1p3/pp1p4/2bP4/PPNNP1P1/2Q2P1P/2RR1BK1 b - - 0 21 | Bxd3 | Is the Black king in check? | No | check |
r3r1k1/1bp2ppp/p3p1q1/1p2P3/2PP4/BQ3N2/PR2RKPP/8 b - - 0 26 | c3c4 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1b2rk1/ppQ3pp/2p1p3/3p4/2PP1P2/2N3P1/PP5P/4K3 b - - 0 22 | dxc4 | What piece is on b2? | White Pawn | occupancy |
r3r1k1/pb4bp/2p2Rp1/8/2P4P/8/PQ4P1/K7 b - - 2 4 | Re1+ | Does Black have any isolated pawns? | Yes: a7, c6 | structure |
r1bq1rk1/pp1nbppp/4pn2/8/2B5/P1N1PN2/1PQB1PPP/3RK2R w K - 3 12 | Ng5 | Is the White king in check? | No | check |
rnbqkb1r/pp1p3p/2p2pp1/4pP2/2B4N/2P5/PPP3PP/R1BQK2R b KQkq - 0 8 | d5 | Identify any White knight outposts on the board. | None | outposts |
r1b1r2k/1p3p1p/p4q2/4n3/8/2B1Q3/PPP4P/2KR1B2 w - - 0 22 | Re1 | What piece is on d6? | Empty | occupancy |
r1bqrbk1/2p2p1p/p1np1np1/1p2p3/4P3/2PP1N2/PPB2PPP/R1BQRNK1 w - - 0 12 | h3 | What is the material balance in this position? | Equal | material |
2bq1b1k/2r2ppp/3p4/3P1NPP/p7/1p6/PPP2Q2/1K3RR1 w - - 0 35 | cxb3 | What is the material balance in this position? | White is up 2 pawns of material | material |
6k1/4r2b/p1Bq3p/2pP1pp1/2P1np2/1P3N2/PQ4PP/5RK1 b - - 1 31 | g4 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
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