fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/5p1k/4b3/3p4/r2P4/1R2K1Rp/8/8 w - - 0 76 | Rb1 | Does Black have any isolated pawns? | Yes: d5, f7, h3 | structure |
r2qkbnr/ppp1pppp/2n5/3P4/2p1P1b1/5N2/PP3PPP/RNBQKB1R b KQkq - 0 5 | Ne5 | Are there any open files in this position? | No | files |
rnbqkb1r/ppp2pp1/4p2p/2Pp3n/3P4/2N5/PP1BPPPP/R2QKBNR b KQkq - 2 6 | Nf6 | What piece is on h4? | Empty | occupancy |
rnb2k1r/ppp1qB1p/1b1p1p1B/4N3/3P2P1/8/PPP2P1P/R2QK2R b KQ - 1 13 | g5h6 | Is the Black king in check? | Yes | check |
r3kb1r/ppp1qppp/2n1b3/3p4/3Pn3/2P1N3/PP1NQPPP/R1B1KB1R b KQkq - 3 9 | f5 | Is the e-file open, semi-open, or closed? | open | files |
r1b3k1/pp1n3p/2pbp2r/3pNpp1/2PPP3/1P1N2P1/P1Q1PKBq/R1B2R2 b - - 1 18 | Rh3 | Identify any White knight outposts on the board. | None | outposts |
r1b1qb1r/pppk3p/4p3/3pP3/5p2/3n4/PPPNQ1PP/R1B2RK1 w - - 0 15 | Qxd3 | Identify any Black knight outposts on the board. | e3, e4 | outposts |
r1bq1rk1/1p3pbp/2pp1np1/p1nPp3/2P1P1P1/2N1B2P/PP1NBP2/R2QK2R b KQ - 1 11 | a4 | Does Black have any passed pawns? | No | structure |
r1b2k2/pp1n1pp1/3b3p/3p3n/2pP3B/2P2N2/PPBN1PPP/4R1K1 w - - 4 17 | g4 | Identify any Black knight outposts on the board. | None | outposts |
1r1q1r2/pbpnbpkR/1p2p1p1/6P1/3PBQP1/5N2/PPP2P2/2KR4 b - - 4 18 | Kxh7 | Is the move from g7 to g8 legal? | Yes | legality |
3r2k1/1p1q1pp1/r2P2np/2p2N2/p3PP2/P6P/1P1QN1P1/3R2K1 w - - 1 33 | Neg3 | Is the move from g1 to f2 legal? | Yes | legality |
r1bq1rk1/p1p1b1pp/2p1pn2/5pN1/3P1N2/8/PPP2PPP/R1BQ1RK1 b - - 1 10 | Qd6 | Identify any White knight outposts on the board. | c5 | outposts |
r1bn2k1/p2p2P1/2pqr2P/1p2p3/2B1Pn2/1P6/P1PP4/1K4R1 b - - 0 4 | Qd4 | Is the move from d6 to d3 legal? | Yes | legality |
r4rk1/2p3bp/2Rp2p1/P2P4/1q1p4/3Q2N1/5PPP/5RK1 b - - 2 27 | Qxa5 | Is the move from g7 to h6 legal? | Yes | legality |
3r1rk1/p1b3pp/1p2pnp1/2qP4/2P5/P3B1PP/1P3PB1/R2Q1RK1 b - - 4 19 | g5e3 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/6p1/7p/1n2K2k/2R5/7P/8/8 b - - 28 72 | g5 | Identify any Black knight outposts on the board. | None | outposts |
r2qr1k1/1p2bppp/p2pbn2/4n3/4PN2/1PNB4/PBP3PP/R3QRK1 w - - 5 14 | Kh1 | Is the move from f1 to d8 legal? | No | legality |
rn1qkb1r/pp2pp1p/2pp1np1/8/3PPP2/2N2b1P/PPP3P1/R1BQKB1R w KQkq - 0 7 | Qxf3 | Does White have any passed pawns? | No | structure |
8/4b3/8/2p1k3/p1P1N1Pp/4K2P/P7/8 b - - 4 137 | Bf8 | Are there any open files in this position? | Yes: b, d, e, f | files |
4r1k1/pp3rp1/2n4p/5P2/4pN2/6PB/qP2QP1P/3R2K1 b - - 3 27 | Qb3 | Is the Black king in check? | No | check |
1r3k1r/p1p3pp/3p1n2/3Bp2b/1P1bP2q/P1NP1P2/2PBQP1P/R3K2R b KQ - 2 14 | c1d2 | What is the material balance in this position? | White is up 2 pawns of material | material |
r3k2r/bpp2ppp/p2p4/P7/2B1P1n1/2P2Nq1/1P3P2/R1BQ1RK1 w kq - 4 17 | Kh1 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
q7/6p1/1k5p/8/p7/5B2/2P3P1/2K5 w - - 2 3 | Bxa8 | Identify any White knight outposts on the board. | None | outposts |
8/8/r2k2R1/2p5/8/3K4/2P3PP/8 b - - 0 44 | h6g6 | Is the White king in check? | No | check |
8/8/8/4qpp1/6k1/8/2Q5/6K1 b - - 9 77 | Qd4+ | Identify any Black knight outposts on the board. | e4, f4, g4, h4 | outposts |
5k2/6pp/5n2/8/1P1pK3/P2P3P/8/2r5 w - - 2 34 | d5f6 | Is the Black king in check? | No | check |
8/1r2q1k1/1p1pQpPp/3Pp2P/P1P1P3/1R6/8/7K b - - 4 44 | Qc7 | Identify any White knight outposts on the board. | b5 | outposts |
3k2r1/3Pb2R/p4B2/1q4p1/1p3p2/1P6/P1r2PP1/1K1R4 w - - 3 29 | Rxe7 | Are there any open files in this position? | Yes: c, e, h | files |
5rk1/B1p3p1/1p5p/7q/4N2b/2P2n2/PP3K2/4R2R w - - 0 30 | f6h4 | Is the Black king in check? | No | check |
r3kbnr/pp1b1pp1/1q2p2p/3pP2P/3n1PP1/5N2/PPP5/R1BQKB1R w KQkq - 0 12 | Nxd4 | Identify any White knight outposts on the board. | None | outposts |
2q2bk1/p2r2p1/4p1p1/n2p2N1/3B2P1/2PQ3P/P4PK1/8 w - - 0 30 | Qxg6 | Identify any White knight outposts on the board. | g4 | outposts |
8/5p1k/2R4p/1P1qQ1p1/4p3/P7/1B3P2/7K b - - 0 40 | Qd1+ | Identify any Black knight outposts on the board. | d3, f3, f4, h4 | outposts |
8/p4kp1/1p1q1n1p/2p2p2/2P1p2P/P1Q1P1P1/1P2BP2/6K1 b - - 0 30 | Nd7 | What is the material balance in this position? | Equal | material |
r1b2rk1/pp1p1p2/5N1p/6p1/1p2P3/1P6/P1P2PPP/R3KB1R b KQ - 0 16 | d5f6 | Identify any White knight outposts on the board. | d5 | outposts |
2rq1rk1/1p2bp1p/p1bppnp1/5P2/P2BP3/2NB3Q/1PP3PP/4RRK1 b - - 0 15 | Bd7 | What is the material balance in this position? | Equal | material |
8/5b2/pb4k1/4Bpp1/2p3P1/P1P5/1P2KN2/8 b - - 2 44 | a5 | Is the move from g6 to c4 legal? | No | legality |
4r1k1/p4ppp/8/6N1/2p2n1P/P7/1PP2PP1/2K4R w - - 0 24 | d5f4 | What is the material balance in this position? | White is up 1 pawn of material | material |
2r3k1/5pp1/p1pBb1rp/2P5/nP1Np3/P7/3R1PPP/4R1K1 b - - 2 29 | Nc3 | What piece is on g7? | Black Pawn | occupancy |
q5k1/5ppp/8/1pb1P3/2p3Q1/2P2r1P/1P3P2/1N2R1K1 w - - 2 26 | Re2 | Is the move from g4 to g5 legal? | Yes | legality |
r2qkb1r/3b1ppp/1p2p3/nQp5/P7/5N2/1PPP1PPP/R1B1K2R w KQkq - 1 12 | Qxd7+ | Is the move from b5 to b6 legal? | Yes | legality |
r2qrnk1/4bppp/1p2p1n1/pPppP2N/3P3P/2P2NP1/1P3P2/R1BQR1K1 w - - 1 17 | Kg2 | Identify any Black knight outposts on the board. | None | outposts |
3k4/1N5R/p6p/2p3p1/2P1P3/2r5/P4PPP/3B1RK1 b - - 1 27 | d6b7 | Is the Black king in check? | Yes | check |
3r2k1/pp2qrpp/4b3/P2pPp2/2pP3P/Q1P3P1/1P3RB1/5RK1 w - - 5 30 | Qxe7 | Are there any open files in this position? | No | files |
r1b2r1k/pp1nq2p/2p4n/4P1p1/3P1p2/P1bB3P/1PQBN1P1/R4RK1 w - - 0 17 | Bxc3 | What piece is on g3? | Empty | occupancy |
r4rk1/ppq2p1p/1n3PpQ/3P4/8/1BN2P2/PP5P/R3K1b1 b Q - 0 20 | Qe5+ | Is the move from g6 to c4 legal? | No | legality |
7r/p1p2Q2/1p3pk1/6N1/7P/6P1/bPK1BP2/7q b - - 2 28 | d7f7 | Is the Black king in check? | Yes | check |
8/3k2n1/p2p1pPK/Pp1Pp3/1P2PP2/6P1/8/8 b - - 0 52 | f5 | What piece is on f4? | White Pawn | occupancy |
r4rk1/5ppp/1p2pn2/p7/Pp6/3P1bP1/6BP/1N2K2R w K - 0 22 | b7f3 | Identify any Black knight outposts on the board. | a3, a5, d5 | outposts |
8/1p6/1p4p1/p2Pp2k/4P2p/5K2/5P1P/8 w - - 0 40 | d6 | Is the move from h2 to h3 legal? | Yes | legality |
2kr3r/pppn1pp1/3b3p/8/4q1b1/4BN2/PPPQBPPP/R3K2R w KQ - 0 12 | Bxa7 | What piece is on a6? | Empty | occupancy |
r2q1rk1/5ppp/p2bpn2/1pppNn2/3P1P2/2PQP3/PP1N2PP/R1B2RK1 w - - 0 14 | g4 | Are there any open files in this position? | No | files |
r4rk1/ppp2p1p/n2pb1p1/2q1n3/2PNPP1B/2P5/P3B1PP/R2QR1K1 b - - 0 16 | Nxc4 | Identify any Black knight outposts on the board. | c5 | outposts |
1n3bk1/1q1n1p1p/p3N2Q/8/4P3/1P3PPK/1Br4P/8 w - - 3 5 | Qg5+ | Is the a-file open, semi-open, or closed? | semi-open for White | files |
1r3rk1/3bpp1p/p2p2p1/2pNn3/3bP3/1B3P2/PP1Q2PP/1K5R b - - 6 19 | Nc6 | What piece is on a2? | White Pawn | occupancy |
5rk1/2p3p1/p1p5/3p2p1/3Pb1q1/2P1QN2/PP1BnK1P/5R2 b - - 5 27 | Rxf3+ | What piece is on g2? | Empty | occupancy |
2r2k2/pb2b3/1pn1B1p1/5P1p/8/P1B2N1q/1P3PPP/4R1K1 w - - 1 28 | gxh3 | Identify any Black knight outposts on the board. | None | outposts |
2br4/1r1n4/kp1Nqpp1/p1p1p2p/P3P2P/KRP1BPP1/1Q6/3R4 w - - 1 43 | Nb5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r2k1/4rpp1/7p/pB1p1Pq1/P2Qn3/2P2R2/1P4PP/3R2K1 w - - 8 35 | c4 | Is the move from d4 to f7 legal? | No | legality |
8/p7/8/1p2p3/1P2P3/P5pk/5P2/6K1 w - - 0 39 | f4 | Is the move from g1 to h1 legal? | Yes | legality |
7r/1ppb1pk1/1n1b1qp1/p2Pp2r/P3P3/1P1NQ1P1/2R3BP/2R2NK1 b - - 4 29 | Ba3 | Is the White king in check? | No | check |
8/8/6pp/4k3/5NKP/p7/Pb6/8 w - - 7 46 | e6e5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/1p1R1ppp/1P2pk2/5r2/RP6/4KP2/P6r/8 b - - 0 30 | Rh3 | Is the Black king in check? | No | check |
8/8/8/3p1k2/3K4/8/P7/8 w - - 1 54 | Kxd5 | Does White have any passed pawns? | Yes: a2 | structure |
3q1bk1/R5pp/2rp4/2nN1r2/2Pp4/Q6P/5PP1/4R1K1 w - - 0 29 | Ne7+ | Does Black have any isolated pawns? | Yes: d4, d6 | structure |
8/5n2/8/4qp2/7P/1Q5K/5kB1/8 b - - 0 55 | Ng5+ | Is the move from f7 to c3 legal? | No | legality |
1r5k/p3R1p1/1p3n2/5QNp/8/q4P2/5P1P/6K1 w - - 2 27 | Rf7 | Is the move from f2 to b3 legal? | No | legality |
2q2rk1/R2n1pb1/6p1/1pP2b2/3B3p/1BP2N1P/5QP1/6K1 w - - 6 36 | Qxh4 | Identify any White knight outposts on the board. | b4, b6, d4, d6 | outposts |
3r4/8/8/1p6/8/1k6/1pp1K3/5RR1 b - - 1 66 | Ka2 | What is the material balance in this position? | White is up 2 pawns of material | material |
3rr1k1/pp4p1/2p3Q1/3pq3/8/8/P3P1BK/2R2R2 w - - 0 27 | Kg1 | Identify any Black knight outposts on the board. | c4, e4 | outposts |
5b2/2R1p1kp/pp2P1p1/4p3/1Q5P/3r1q2/PP3PK1/4R3 w - - 0 32 | Kg1 | Is the White king in check? | Yes | check |
q2n1k2/1bpp2pp/3b1n2/1Q2p3/4P3/2PP4/1P3PPP/1NB2RK1 w - - 1 17 | Be3 | Are there any open files in this position? | Yes: a | files |
rnbqk1nr/pppp1ppp/8/2b1p3/2B1P3/8/PPPP1PPP/RNBQK1NR w KQkq - 2 3 | Qh5 | Is the b-file open, semi-open, or closed? | closed | files |
rnbqkb1r/ppp2ppp/4pn2/8/3P4/2NB1N2/PPP2PPP/R1BQK2R b KQkq - 1 6 | Be7 | Are there any open files in this position? | No | files |
7r/1p1nkp1N/2b1p2R/p2pP3/P2P4/1P6/3K1PP1/1B6 w - - 0 36 | Bd3 | Does White have any isolated pawns? | No | structure |
6rk/2p1K3/3q1p1P/4p1p1/8/8/8/8 w - - 6 56 | d5d6 | Is the White king in check? | Yes | check |
3b4/5k2/8/p2b2p1/2pB1pP1/P1P5/1PK2N2/8 b - - 15 53 | Ke6 | Does Black have any isolated pawns? | Yes: a5, c4 | structure |
r2q1bnr/ppp2kp1/2n4p/4pb2/2B5/5N2/PPPP1PPP/R1BQK2R b KQ - 1 8 | e2c4 | Is the Black king in check? | Yes | check |
2r3k1/p2nBppp/1p1P4/8/8/4RBP1/q4P1P/3R2K1 w - - 1 25 | Bd5 | Are there any open files in this position? | Yes: c, e | files |
3r1rk1/1ppqbppp/p1p5/2n5/3NPBb1/2N1Q2P/PPP2PP1/R3R1K1 b - - 0 14 | Rfe8 | Identify any Black knight outposts on the board. | None | outposts |
5n1b/2pp4/P5P1/5KPk/8/8/P7/8 b - - 0 3 | Bd4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2kr4/2p2R2/p2p4/3P2p1/2P1p1p1/4P1P1/P1K1N1Nr/7n w - - 0 26 | Nd4 | What piece is on b1? | Empty | occupancy |
r1bqk1nr/pppp1ppp/2n5/4p3/1bB1P3/2P2N2/P2P1PPP/RNBQK2R b KQkq - 0 5 | Ba5 | Does White have any passed pawns? | No | structure |
5k2/p4ppp/b7/8/PPp2P2/2Pp4/4rKP1/3R4 w - - 1 38 | e7e2 | What is the material balance in this position? | Black is up 4 pawns of material | material |
rn2k2r/pp4pp/5p2/4p3/3pP3/2q5/P3KPPP/R2Q2NR b kq - 1 17 | d3e2 | What is the material balance in this position? | Black is up 2 pawns of material | material |
5nk1/3bbrpp/p1q1p3/3pPp2/P2P4/2BBP3/3NQ1PP/R5K1 w - - 5 27 | Ba5 | Does White have any isolated pawns? | Yes: a4 | structure |
4Q3/p6p/5rkn/1p2p3/3P2P1/P3P2P/1P3P2/5RK1 b - - 1 34 | c6e8 | Is the Black king in check? | Yes | check |
rnbqk1nr/pppp1pb1/7p/6p1/2B1Pp1P/5N2/PPPP2P1/RNBQK2R w KQkq - 0 6 | d4 | What piece is on h3? | Empty | occupancy |
5k2/p4p1p/1p6/4N3/8/6KP/P3bPP1/8 b - - 2 2 | f6 | Does White have any passed pawns? | No | structure |
5r2/5k2/p5pp/1p5B/1Pp5/4N2P/P2r1PP1/R5K1 b - - 0 29 | gxh5 | What is the material balance in this position? | White is up 1 pawn of material | material |
6k1/pp4np/2prb3/5p2/5P2/2N5/PPB2KPP/5R2 w - - 0 25 | Ke3 | Does Black have any isolated pawns? | Yes: f5, h7 | structure |
7r/P4k2/3p4/3Np3/4P3/R2R2P1/2q2PK1/8 w - - 0 40 | b1c2 | Identify any Black knight outposts on the board. | c5 | outposts |
2r2k2/p2Rb3/1p3p2/n3q3/8/P6Q/5PPP/5RK1 b - - 2 27 | f5 | Does White have any isolated pawns? | Yes: a3 | structure |
r2r1k2/4b1p1/p4n1p/1pp1N2B/8/PnN1R2P/5PP1/R1B3K1 w - - 0 22 | a5b3 | Identify any Black knight outposts on the board. | a4, c4, d4 | outposts |
8/5pk1/1R5p/8/P5PK/4Pr2/5P2/8 b - - 0 51 | Rxf2 | Does Black have any isolated pawns? | Yes: f7, h6 | structure |
1r1q1rk1/4bppp/3pb3/p3p3/R1B1P3/1PP5/2N2PPP/3Q1RK1 w - - 2 19 | Ne3 | Are there any open files in this position? | No | files |
4rrk1/pp3ppp/5n2/3p4/2B2Bq1/1NP5/PP2Nb2/R2QRK2 w - - 0 21 | Kxf2 | Identify any White knight outposts on the board. | d4 | outposts |
r6r/p5pp/1k6/1q2P3/8/R7/P2B1PPP/1R4K1 w - - 2 32 | Be3+ | Is the move from g2 to c8 legal? | No | legality |
3q2k1/5b1p/5p2/3P2p1/8/P4NP1/5PP1/2Q3K1 b - - 0 35 | Qxd5 | Is the Black king in check? | No | check |
8/1p3pk1/pb1r2p1/6Pp/1PPpq3/5N1P/P2R1PK1/3Q4 b - - 0 38 | Bd8 | What piece is on g3? | Empty | occupancy |
2kr3r/ppp1n1p1/1bp1bp2/6p1/4P3/1N1BBP2/PPP1K1PP/R6R b - - 1 15 | Ng6 | Does Black have any isolated pawns? | No | structure |
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