fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2b3k1/1p2bp2/r5p1/p3P3/2p1N3/5Q2/PqB2PP1/3R2K1 w - - 2 26 | Nf6+ | Does Black have any passed pawns? | Yes: c4 | structure |
5bk1/1R3q1n/p2pr1p1/2pQpNPp/P1P1P3/2P2P2/3B4/5K2 b - - 1 35 | Qe8 | What piece is on g5? | White Pawn | occupancy |
6k1/5pp1/p3r2p/Pp2b3/1P1Rp3/2B1P1P1/5P1P/6K1 w - - 1 2 | Rxe4 | Is the move from h2 to a6 legal? | No | legality |
8/5p2/p3pRk1/P2pK1P1/1r1P4/8/1P6/8 b - - 1 3 | Kg7 | Identify any Black knight outposts on the board. | d5 | outposts |
r1b5/pp4Np/n1pb2p1/8/2BP4/2P3kP/PP3qP1/R1BKR3 w - - 1 22 | g4g3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/5pp1/3n3p/p4P2/1k4P1/2NK3P/8/8 w - - 3 18 | f6 | Is the Black king in check? | No | check |
8/8/rR2k3/P4p1p/4p3/4P3/4K1PP/8 b - - 2 41 | b5b6 | Is the Black king in check? | Yes | check |
8/4R3/3p4/1p1p4/3P1p2/P3k1pp/1P6/6K1 b - - 6 20 | Kxd4 | Identify any Black knight outposts on the board. | e3, g3 | outposts |
4k3/6R1/p3Bn1p/3p4/2r2P2/4b1P1/4N1KP/8 b - - 0 28 | Bc5 | What piece is on d6? | Empty | occupancy |
B4k2/p4p2/7p/6p1/1Pb1P3/P7/5PPP/RNB1R1K1 b - - 2 20 | f1e1 | Identify any White knight outposts on the board. | a5, c5, d5 | outposts |
4r1k1/pppr2p1/5n2/2P1n1Q1/1P2P3/P4PPP/6B1/7K w - - 1 31 | f8e8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3Rn1k/1bq2prp/p2p4/3P2b1/1p3P1Q/3B4/PPP3PP/2K1R3 w - - 2 24 | fxg5 | Is the White king in check? | No | check |
r1b1r1nk/1p5p/p1q3p1/4ppB1/2B4Q/P7/1PP3PP/2KR1R2 w - - 0 24 | Bf7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
k3q2r/p3b1p1/2Rp3p/PQ1Pp1pP/3pP3/8/1B1P1P2/1K6 b - - 2 30 | Qd7 | Is the move from g7 to d4 legal? | No | legality |
4k2r/1bqnbppp/p2ppn2/1p4B1/2P1PP2/1N3Q2/P1P3PP/1K1RRB2 b k - 0 16 | bxc4 | Is the Black king in check? | No | check |
r4bnr/1b1kq1p1/p1np1p1p/1ppBpQ2/4P3/2NPB3/PPP2PPP/2KR2NR b - - 3 12 | g6f5 | Is the Black king in check? | Yes | check |
rnb1kbnr/pppp1ppp/8/4p3/4PP1q/8/PPPP2PP/RNBQKBNR w KQkq - 1 3 | Ke2 | Does Black have any passed pawns? | No | structure |
2Q2bk1/pp5p/2bP2p1/4B3/8/5q1P/PP6/4R1K1 w - - 0 3 | Qe6+ | What is the material balance in this position? | White is up 2 pawns of material | material |
4r2r/4Rppp/2p5/3p1k2/2P1P3/BR1BP2P/6P1/6K1 b - - 0 32 | f3e4 | Is the Black king in check? | Yes | check |
7r/3P1k2/4pBp1/1ppb1pP1/5R2/r5KP/p1P5/3R4 w - - 3 43 | c3 | Is the White king in check? | Yes | check |
8/1p6/6pk/5p2/3b3p/1P1B1P1P/R6K/6r1 b - - 5 44 | Rg3 | Does Black have any isolated pawns? | Yes: b7 | structure |
8/2R4p/p7/P1kp2K1/8/3b4/8/8 b - - 1 60 | g7c7 | Is the White king in check? | No | check |
rnbqk2r/ppp1ppbp/3p2p1/3nP3/2BP1P2/2P5/PP4PP/RNBQK1NR b KQkq - 2 6 | Nb6 | Is the b-file open, semi-open, or closed? | closed | files |
2q4r/2p4p/kpbp2p1/p7/P1Q5/1P3NP1/2P3BP/2K5 b - - 1 2 | Ka7 | Is the Black king in check? | Yes | check |
8/3P1p2/1k3R2/8/r5Pp/5K2/8/8 b - - 0 40 | d6d7 | Is the Black king in check? | Yes | check |
5R2/8/3Np1k1/5p1p/5P2/5r2/3K4/8 b - - 7 51 | f7f8 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqk2r/pp1nbp1p/2n1p1p1/2ppP3/3P3P/2PB1N2/PP1N1PP1/R1BQK2R w KQkq - 1 9 | h5 | What piece is on a1? | White Rook | occupancy |
r1b1k2r/pp3ppp/2n2p2/3q4/3P4/2P2N2/P2Q1PPP/R3KB1R b KQkq - 1 11 | O-O | Are there any open files in this position? | Yes: e | files |
3k2R1/5R2/8/1r6/3P4/5P2/6PK/r7 b - - 8 51 | g6g8 | Is the Black king in check? | Yes | check |
7r/5pp1/8/1pbkP3/p2p1P2/2p2K1P/2P5/R3R3 w - - 2 49 | Rh1 | Does Black have any passed pawns? | Yes: a4 | structure |
r1bq4/pp3kb1/2npp1nB/2p4Q/2B1p3/2NP4/PPP3PP/R5K1 b - - 0 15 | Qh4 | Is the move from g7 to e5 legal? | Yes | legality |
2r3k1/p4ppp/pbn1q3/3Q4/3p4/6P1/1P3P1P/2RRB1K1 w - - 2 26 | Qf3 | What piece is on c1? | White Rook | occupancy |
r4b1k/6qp/p1n1b3/1p4r1/3PR3/1B4PQ/PPP2P1P/6K1 w - - 0 26 | c8e6 | Identify any White knight outposts on the board. | e5, f4, h4 | outposts |
2r5/1p3k2/p2ppn2/r4p1p/2P2P1P/1PN1RKP1/2R5/8 w - - 0 40 | Rce2 | Is the move from c4 to c5 legal? | Yes | legality |
3k4/pp1r1p2/4pb1p/5p2/2R5/1P1NP1PP/P3KP2/8 w - - 4 27 | f4 | Does Black have any passed pawns? | No | structure |
3Q1b1k/6q1/p7/2NQ3P/Kp4p1/5r2/PP1R1q2/8 b - - 2 45 | Qxb2 | What piece is on c5? | White Knight | occupancy |
r2r2k1/p2n1ppp/1bp1p3/8/1PN1nB2/P4N1P/4KPP1/R4R2 w - - 1 18 | c5b6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2k2r1r/pN1n2Q1/2p1p2p/3nP1p1/Pp4q1/2P3B1/5PPP/2R2RK1 b - - 0 23 | Nxc3 | What piece is on b1? | Empty | occupancy |
r3k2r/pppbqp1p/4p1p1/n2p4/3PnP2/1N2PN2/PPP1QP1P/2KR1BR1 w kq - 4 12 | Nxa5 | Is the move from e2 to b6 legal? | No | legality |
rnbN1kn1/3p2b1/p1p1p3/1p2Pp1Q/3P4/2N5/PPP2PPP/R1B2RK1 b - - 0 16 | f7d8 | What is the material balance in this position? | White is up 13 pawns of material | material |
r1rqnbk1/Bn1b1p1p/3p2p1/1p1Pp3/1Pp1P3/2P2NNP/R2Q1PP1/1B2R1K1 w - - 2 25 | Bc2 | What is the material balance in this position? | Equal | material |
1r2r1k1/p1p2pp1/7p/3p1q2/3P1P2/4P2P/P3QP2/2R1K1R1 b - - 0 24 | Rb1 | What piece is on h6? | Black Pawn | occupancy |
r1bqkbnr/pp2pppp/2n5/3p4/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 2 5 | Be2 | Is the move from f3 to d1 legal? | No | legality |
r1bR1bnr/pp3kpp/4pp2/1Bn3B1/4N3/5N2/PPP2PPP/2K4R b - - 5 11 | Be7 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rn2r1k1/3bbq1p/4pp2/pB1p4/Pp1P1B2/5N2/1P2QPPP/R3R1K1 w - - 7 24 | Bxd7 | Is the move from f3 to d3 legal? | No | legality |
r1bq1rk1/ppp4p/5bp1/P1pPp3/1P1nN3/2N5/4BPPP/R2Q1RK1 w - - 0 17 | bxc5 | What piece is on e1? | Empty | occupancy |
r3k2r/ppqb1n1p/2n1pp2/2bp4/1P1P2P1/P4N2/1B3P1P/R2QKBR1 w Qkq - 0 16 | bxc5 | Are there any open files in this position? | Yes: c | files |
rnb1kb1r/ppp1pppp/5n2/q7/3P4/2N5/PPP2PPP/R1BQKBNR w KQkq - 1 5 | Bd2 | What piece is on d3? | Empty | occupancy |
rn3rk1/pp3ppp/2p2n2/4N3/Pb1q4/2N1PP2/1PQ2KPP/R1B2B1R b - - 0 12 | Qxe5 | Identify any Black knight outposts on the board. | None | outposts |
6k1/1p2p2p/1qn1p1p1/p2rPr2/P2p1B2/2P3P1/1P2QP1P/3RR1K1 b - - 2 21 | Qb3 | Is the Black king in check? | No | check |
1q5k/2p2Q1p/p2p4/7P/3PP1P1/1rpn4/8/1K1R2R1 w - - 0 29 | Kc2 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r2qk2r/3nbp2/3p2p1/pb1Np2p/P3P1P1/2P4P/5P2/1RBQR1K1 w kq - 0 21 | Rxb5 | What piece is on a1? | Empty | occupancy |
r1bqkb1r/pp1p1ppp/2n1p3/2p1P3/1nPP4/5N2/PP3PPP/RNBQKB1R w KQkq - 1 7 | dxc5 | What piece is on a4? | Empty | occupancy |
5rk1/5pbp/Q3p1p1/4Pn2/5B1P/P2R2P1/8/1Nr1K3 w - - 1 24 | c8c1 | Is the White king in check? | Yes | check |
qnnbbrkr/pppp1ppp/8/4p3/7P/8/PPPPPPP1/QNNBBRKR w KQkq - 0 2 | h5 | Are there any open files in this position? | No | files |
8/1r6/5pkp/1p1R3p/2p5/2P5/1P4PK/8 w - - 2 46 | Kg3 | Is the move from g2 to g3 legal? | Yes | legality |
3r2k1/pp3pp1/3P2p1/3B2P1/5P1n/1P5q/P4Q2/2R3K1 b - - 0 32 | Rxd6 | Does White have any passed pawns? | Yes: d6 | structure |
r5k1/p1qr2pp/1p2bpn1/2pnp3/4N3/P2P1NP1/1P1B1PBP/2QR1RK1 w - - 2 22 | d8d7 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1b2rk1/pq2npbp/2p1p1p1/1P6/P2p4/B5P1/3NPPBP/R2QK2R w KQ - 3 15 | Nc4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r4rk1/pp1b4/2p4q/3p1p2/3P2np/2NBP1P1/PP3PK1/R2Q3R b q - 1 1 | h3+ | What is the material balance in this position? | Equal | material |
8/r3K1k1/3RP3/8/8/8/8/8 w - - 5 74 | Ke8 | Is the move from e7 to g3 legal? | No | legality |
4k2r/p4ppp/b3p3/2b1n3/Ppp1B3/6P1/1P2PP1P/R1BR2K1 b k - 0 14 | Ke7 | What piece is on a7? | Black Pawn | occupancy |
5k1r/5p1p/pq2pB1b/8/Bp6/2P5/PP3P1P/1K1Q4 w - - 5 26 | Qf3 | Identify any White knight outposts on the board. | None | outposts |
1r2k2r/pp2npp1/Q1n1p2p/3pP3/3P2PP/4B2B/P4PK1/3R3R b k - 0 19 | bxa6 | What piece is on f6? | Empty | occupancy |
rn1qk1nr/pbpp1ppp/1p6/4p3/1bP1P3/2NP4/PP3PPP/R1BQKBNR w KQkq - 1 5 | a3 | Is the move from c4 to c5 legal? | Yes | legality |
r1b2r1k/1pq1bppB/p2ppn1p/4n1N1/1PPN1P1P/P3P3/1BQ3P1/R3K2R b KQ - 0 17 | Neg4 | Is the move from c7 to d8 legal? | Yes | legality |
8/8/8/1p2k3/6K1/8/P7/8 w - - 1 54 | Kg5 | Identify any White knight outposts on the board. | None | outposts |
r3k2r/1p1bqpbp/1n2p1p1/n2pP1NP/p2P1P2/P2B1NP1/1P1B4/R2QK2R b KQkq - 2 16 | h6 | What piece is on b4? | Empty | occupancy |
1r3k2/5pp1/3p2p1/8/3P4/P6P/2R2P1K/8 b - - 0 40 | Ra8 | What piece is on e6? | Empty | occupancy |
kb1r2r1/pp3Rp1/2pq3p/P3p3/2B1P3/2PP2Pn/1PK2Q2/R5B1 w - - 1 25 | Qb6 | Is the move from f2 to f5 legal? | Yes | legality |
r3k1nr/pppqppbp/2np2p1/6N1/3PP3/6P1/PPP2P1P/RNBQR1K1 w kq - 2 10 | c3 | Are there any open files in this position? | No | files |
r3k2r/pp2n1pp/1qp1p3/b2bPp2/Q2P4/P1N2P2/1PB3PP/R1B1K2R b KQkq - 3 14 | Qa6 | Identify any Black knight outposts on the board. | None | outposts |
r6r/p3R1Q1/3P1n1p/2p4k/5q2/2P5/P4PPP/5RK1 w - - 1 28 | Re3 | Identify any Black knight outposts on the board. | None | outposts |
1r1r1k2/1p3pp1/pNb5/6N1/P2R2Pn/8/1P3P1P/4R1K1 w - - 1 28 | Rf4 | What piece is on h2? | White Pawn | occupancy |
3rrbk1/pppq1pp1/6p1/2PN2P1/3B1P1n/1P5P/P2Q4/2RR2KB b - - 2 26 | Qxh3 | Is the move from d7 to c8 legal? | Yes | legality |
r1bqnrk1/pp2ppbp/2np2p1/6P1/3NP2P/2N1B3/PPP2P2/R2QKB1R b KQ - 0 10 | Nc7 | What is the material balance in this position? | Equal | material |
r1bq1rk1/ppp2ppp/2nb4/3np3/8/2PB1N1P/PP1PNPP1/R1BQ1RK1 w - - 1 10 | Bc2 | Identify any Black knight outposts on the board. | None | outposts |
8/5ppp/3k4/p2pb3/P7/1B1P1K1P/1rP2P2/4R3 w - - 4 35 | Kg4 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rnbk2nr/p4ppp/3N4/1p1N3P/3bP1P1/3P1Q2/PqP5/R4KR1 w - - 1 21 | Qxf7 | Does White have any passed pawns? | Yes: d3 | structure |
r3k2r/2q2pb1/2p1p1pp/p2n4/P1B5/2P4Q/1P1B1PPP/R3R1K1 b kq - 1 20 | h5 | What piece is on b5? | Empty | occupancy |
rnbqk2r/pp3ppp/2pbpn2/3p4/2P5/1P2PN2/PB1P1PPP/RN1QKB1R w KQkq - 3 6 | g4 | What piece is on d7? | Empty | occupancy |
r4rk1/bppb1p2/p1np3p/4p1qn/4P1pN/1BPPN1B1/PP3PPP/R2QR1K1 w - - 6 16 | Rc1 | Does White have any isolated pawns? | No | structure |
r4rk1/2qbbppp/p1nppn2/1p6/3NPP2/P1N1B3/1PP1B1PP/R3QR1K w - - 1 13 | Nxc6 | Is the move from d4 to f3 legal? | Yes | legality |
3rr1k1/pb2q1pp/1p6/n1pP1p2/8/PPQ1PPP1/1B4P1/R3KB1R w KQ - 3 20 | Kf2 | What piece is on e4? | Empty | occupancy |
r1bq1r1k/pp2n1b1/3p3p/1P2p2n/Q3P2P/3P1NP1/P1N3B1/R1B2RK1 b - - 0 20 | Nxg3 | Identify any Black knight outposts on the board. | None | outposts |
rnb1kb1r/ppp2ppp/3qpn2/8/2B5/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 0 6 | O-O | What piece is on b6? | Empty | occupancy |
5qk1/1nr4p/1pN1p1p1/1P2NpP1/p1P2P2/Pn5P/1QK5/3R4 b - - 2 38 | Qc5 | What is the material balance in this position? | Equal | material |
rn2k1nr/ppp2p1p/8/3B2p1/5R2/3P4/PPP1Q1PP/RN4K1 b kq - 1 12 | d1e2 | Is the Black king in check? | Yes | check |
r3q1k1/2p1rppp/1n4b1/ppNpP3/3P4/2Q2N1P/PP3PP1/2R1R1K1 w - - 2 23 | Nh4 | Identify any White knight outposts on the board. | None | outposts |
q5nr/1p3kb1/pBpQbp2/4n1p1/2P1P2p/8/PP2BPPP/3R1RKN w - - 0 24 | f4 | What piece is on g7? | Black Bishop | occupancy |
r2q1rk1/pp1nppbp/n1p3p1/8/2QPPBb1/2N2N2/PP2BPPP/3R1RK1 b - - 7 11 | Bxf3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
rn2kb1r/pp3pp1/2p1q3/4p2p/4P3/2NP1Q2/PPP2PB1/R1B2RK1 b kq - 3 13 | d1f3 | What is the material balance in this position? | White is up 2 pawns of material | material |
2r1r1k1/1b3pbp/pq1p2p1/1p1Pn3/1Pn1PBP1/1QNR3P/4NPB1/1R4K1 w - - 3 21 | Rg3 | What is the material balance in this position? | Equal | material |
4r1k1/3n1ppp/b1r2B2/p1b5/2p5/6P1/P2N1KBP/1R1QR3 w - - 1 23 | Kf3 | Identify any Black knight outposts on the board. | d3 | outposts |
8/5p1p/R7/2p1rkp1/1P1p4/3K4/P4PPP/8 w - - 3 32 | b5 | Does Black have any isolated pawns? | No | structure |
r1bq1rk1/ppnn2b1/3p3p/2pP1p2/2P1pP2/P1N1B2N/1P2B1PP/R2QR1K1 b - - 1 17 | Bxc3 | What piece is on d8? | Black Queen | occupancy |
4n3/2p1nk1p/1pq2pp1/p3p3/P1N1P1PP/1PPQNP2/8/6K1 w - - 1 31 | g5 | Are there any open files in this position? | Yes: d | files |
1rq1rbk1/5ppp/4b3/pp1pPpB1/3N3P/PPP5/3Q1PP1/R3R1K1 b - - 2 22 | Bc5 | What piece is on f7? | Black Pawn | occupancy |
3r1rk1/1bqpnppp/pNp5/2P1p3/1Q6/5B2/PP3PPP/R2R2K1 b - - 1 20 | Nf5 | What piece is on a1? | White Rook | occupancy |
rnbqk2r/pp1p1ppp/4pn2/2p5/1bPP4/2N2NP1/PP2PP1P/R1BQKB1R b KQkq - 0 5 | cxd4 | Is the f-file open, semi-open, or closed? | closed | files |
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