fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1r1q2k1/Q3p2p/6p1/2p1br2/8/2N4P/PPP2PP1/R4RK1 b - - 0 17 | b7a7 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/1p4p1/p3k1np/2Kp1p2/PP6/6P1/1B5P/8 b - - 0 39 | Ne5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2q3r/ppp4p/1b1PkNn1/4p1B1/8/7P/PP3nP1/R2QK2R w KQ - 0 18 | Qb3+ | Does White have any passed pawns? | No | structure |
r4Qk1/3n1p2/3p3p/pbb5/3p3q/5Q1P/PPP1NPP1/R3K2R b KQ - 0 18 | g7f8q | Is the Black king in check? | Yes | check |
5bk1/1b3p1p/p2r2p1/3Pp3/1p2P3/4BP2/PK4PP/1Nr4R w - - 0 25 | Rxc1 | Does White have any passed pawns? | Yes: d5 | structure |
r1bqr1k1/pp1n1ppp/2pbp3/4N3/2PPp3/1P4P1/PB2PPBP/R2Q1RK1 b - - 1 11 | f5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
3q1kr1/pp1bp2R/3p1p2/5Q2/3rP1p1/2N5/PPP5/2K3R1 w - - 5 26 | Qh5 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/pbn3pp/2p1p3/2ppPp2/1b1P4/PP1BPN2/1B2Q1PP/R4RK1 b - - 0 17 | c4 | What piece is on c4? | Empty | occupancy |
1rb1r1k1/3n3p/1q1p1pp1/p2P4/2p1PB2/PnP4P/R1B1N1P1/4QR1K b - - 1 30 | Ne5 | Is the move from a5 to a4 legal? | Yes | legality |
r5k1/pnpb2pp/5p2/2Pp4/8/1P2BN2/P4PPP/R5K1 b - - 1 22 | c6 | What piece is on c4? | Empty | occupancy |
8/ppp3p1/5k1p/R2b4/3P4/6P1/1P3K1P/8 w - - 2 29 | Rxa7 | Identify any Black knight outposts on the board. | None | outposts |
r2r2k1/1pq2pbp/p1npp1p1/2n5/2P1P3/1PN1Q1P1/PB3PBP/1R1R2K1 w - - 3 18 | Ne2 | Is the White king in check? | No | check |
6k1/5pp1/7p/1R3P2/2p1R3/2P5/1P1q1KPP/r7 w - - 3 31 | g5d2 | Is the White king in check? | Yes | check |
3qkb1r/3rp2p/4P1pn/nQ6/4pB2/4P3/PP3P1P/R3K2R w KQk - 0 19 | Rd1 | Identify any Black knight outposts on the board. | h5 | outposts |
3qkb1r/p6p/2b1p3/2p5/2p5/2N5/PB3PPP/n2K1BNR w k - 0 19 | d5c4 | Is the Black king in check? | No | check |
8/5p2/4p1p1/4P2p/1p3P1P/k5P1/P7/1K6 b - - 1 43 | b3 | Does Black have any isolated pawns? | Yes: b4 | structure |
3br1k1/pb3q1p/n1p1pPp1/2p1B1P1/P3BP2/5N1Q/7P/3R3K w - - 3 42 | Bd6 | Does White have any passed pawns? | Yes: f6 | structure |
6k1/8/1p4p1/1B3b2/P7/2p1R3/2r5/3K4 w - - 0 54 | Rf3 | What piece is on d8? | Empty | occupancy |
r1bq1rk1/ppp1ppbp/2n2np1/4P3/3P4/2NB1N2/PPP3PP/R1BQK2R b KQ - 0 8 | Nh5 | What piece is on b1? | Empty | occupancy |
2k2bnr/Q3pppp/2pr4/5q2/1pPP4/6Rb/PB2NP1P/RN2K3 b Q - 0 14 | Nf6 | Is the move from g7 to g5 legal? | Yes | legality |
r4rk1/p3nqpp/Ppn1p3/1B1pPp2/1P1P1P2/5N2/3Q2PP/R4RK1 b - - 4 19 | h6 | Does White have any isolated pawns? | No | structure |
r3r1k1/1p2pp2/5qp1/p1BP3p/P3RP2/1P1Q2PP/4R1K1/b7 b - - 0 46 | Qf5 | What piece is on e4? | White Rook | occupancy |
q1r1r1k1/p1P1bppp/1p2p3/1N6/P2N3B/2R4P/4QPP1/4R1K1 w - - 1 30 | Bg3 | Does White have any isolated pawns? | Yes: a4, c7 | structure |
2r5/5kp1/1p2p3/pPB1P1p1/P5P1/2pKP2P/2R5/8 b - - 0 35 | Rxc5 | What piece is on a7? | Empty | occupancy |
1Q6/3r4/1p2p3/pP1pkp2/P6N/3P2P1/4PP1P/2R3K1 b - - 0 36 | d8b8 | Is the Black king in check? | Yes | check |
2r2rk1/pp1bppbp/3p1np1/q3n3/3NP1PP/2N1BP2/PPPQ4/1K1R1B1R w - - 1 13 | Be2 | Does Black have any passed pawns? | No | structure |
2kr3r/1ppbnpp1/1pnp1q1p/8/4P2P/1NN5/PPP1QPP1/1K1R1B1R w - - 0 13 | f3 | Identify any White knight outposts on the board. | None | outposts |
rnb1k1nr/pp2ppbp/6p1/3q4/3P4/4BN2/PP3PPP/RN1QKB1R b KQkq - 0 7 | Nh6 | Identify any Black knight outposts on the board. | None | outposts |
r3r1k1/ppp3pp/n4bq1/2nP4/3NN3/BPP4b/P1K1Q1BP/4R1R1 b - - 14 25 | Bxg2 | Does White have any isolated pawns? | Yes: h2 | structure |
r1bq1rk1/ppp1bpp1/2np3p/1B2p3/4P3/2PP1Nn1/PP1N1PPP/R2Q1RK1 w - - 0 11 | hxg3 | What piece is on d8? | Black Queen | occupancy |
r4rk1/pp1N2p1/2pbp1qp/3N1p1b/3P1P1P/1B4P1/PP1Q1PK1/3RR3 b - - 0 21 | Rfe8 | Is the move from f8 to g4 legal? | No | legality |
q4rk1/1p2ppbp/3p2p1/3P4/1P1nP3/6PB/r2B1P1P/1QR1K2R b K - 0 20 | Nf3+ | Does Black have any passed pawns? | No | structure |
2r2rk1/pbq1bp2/4pn1p/3P2p1/8/2NB4/PPQB1PPP/2RR2K1 b - - 2 17 | Bc5 | Is the move from e6 to g6 legal? | No | legality |
r1b1k2r/pp5p/6pB/3p4/2pP1P2/q1P5/2PK3P/1R1Q3R w kq - 0 21 | Re1+ | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qk2r/1p1nbppp/p1p1p1b1/3pPn2/3P4/1N3N2/PPPBBPPP/2RQ1RK1 w kq - 2 11 | c4 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/1b3ppp/2p2n2/1p2N3/1P1nP3/2NB2PP/2P2P2/4R1K1 w - - 1 22 | e6d4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3k2r/pp3p2/5q1p/2Pp1bp1/1b6/P1n3B1/1P1QPPPP/R3KBNR b KQkq - 2 13 | Ba5 | Are there any open files in this position? | No | files |
rnbqkb1r/pp1ppp1p/5np1/8/2PN4/2N5/PP2PPPP/R1BQKB1R b KQkq - 1 5 | Bg7 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
rnb1kb1r/1pq2ppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8 | Bxf6 | Identify any Black knight outposts on the board. | None | outposts |
rnbqk2r/ppp2ppp/4pn2/3p4/1bPP4/4PN2/PP3PPP/RNBQKB1R w KQkq - 2 5 | f8b4 | Is the White king in check? | Yes | check |
1rb2rk1/2p2ppp/p1B1p3/1p2P3/2pP4/P1N1P2q/1P6/R2Q1RK1 b - - 7 20 | Qg3+ | Is the f-file open, semi-open, or closed? | semi-open for White | files |
2r3k1/pp3pp1/7p/3P4/8/4pPPB/P2qP1KP/3Q3R b - - 4 24 | Rc1 | Identify any White knight outposts on the board. | None | outposts |
r2q1rk1/1b1nbppp/npp1p3/p2p4/2PP1B2/3N2P1/PPQ1PPBP/RN1R2K1 w - - 2 13 | Nd2 | What is the material balance in this position? | Equal | material |
2k5/1p5r/p1p1p2b/P1Pp1pp1/1PqP4/1KB1P3/5P1Q/4R3 w - - 16 37 | d3c4 | Is the White king in check? | Yes | check |
rn3knr/ppp5/3p1b2/6N1/3P2p1/2NQ2P1/PPP2P1q/R3RK2 w - - 2 19 | Qg6 | Are there any open files in this position? | Yes: e, h | files |
r1b2rk1/1pq1ppbp/6p1/p1p5/2P1P3/1P2BP2/P2QB1PP/3RK2R b K - 1 15 | Be6 | Is the move from a8 to f6 legal? | No | legality |
3r4/p3k1p1/1rp1Nb1p/1p5B/P1p2B2/8/2K3PP/4R3 w - - 16 29 | Nc5+ | Is the f-file open, semi-open, or closed? | open | files |
r3kb1r/ppp2pp1/7p/3Pp3/2B1Nn1q/3P1b2/PPPQ1PPP/R1B2RK1 b kq - 8 13 | Qh3 | Are there any open files in this position? | No | files |
2kr2r1/p1pp1p2/1pb1p2p/4Pp2/5n2/2PN1R2/P6P/R4Q1K b - - 5 27 | Rg4 | Is the move from g8 to g5 legal? | Yes | legality |
r1b2rk1/1pp5/3p1qp1/p1nPp2n/2P1PpP1/2N2P1p/PP1QB2P/R4RKN w - - 0 18 | Qe1 | Is the d-file open, semi-open, or closed? | closed | files |
r1bq1rk1/p2p2pp/1p1bp3/3n4/8/3B1N2/PP3PPP/R1BQ1RK1 b - - 1 14 | Bb7 | What piece is on h8? | Empty | occupancy |
1r1q1rk1/p1p1nppp/2n1p3/1p6/3P1P2/2QBP3/PP1B1P1P/2KR3R b - - 0 13 | Rb6 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
5b2/3p4/5k1p/1pp2p2/3P1P1P/1P2NK2/r1P5/6R1 w - - 0 33 | h5 | Does White have any isolated pawns? | Yes: f4, h4 | structure |
r3k2r/2p1b1pp/p3Q3/1p2P3/8/1nq5/P4PPP/R1B2RK1 w kq - 1 19 | Bg5 | What piece is on g3? | Empty | occupancy |
r3r1k1/2p3pp/pppb1pn1/5P2/4P3/1PN5/1PP2BPP/1K1R2R1 b - - 0 21 | Nf8 | Does Black have any passed pawns? | No | structure |
5rk1/4r1p1/p1pp2qp/6n1/P1P1p3/1P5P/1B3PP1/RQ3R1K b - - 1 27 | Qh5 | Does Black have any passed pawns? | No | structure |
2r2rk1/3b2b1/pB1p4/q2Pnnp1/P3P2p/2p4P/2Q1BNPN/RR4K1 b - - 2 27 | Qxb6 | Does White have any isolated pawns? | Yes: a4 | structure |
3q1rk1/1b1rbppp/p2ppn2/1p6/3BPP2/P1NB3Q/1PP3PP/4RR1K b - - 2 17 | g6 | Does Black have any isolated pawns? | No | structure |
8/pp4pp/4k3/3rPp2/1Pr4P/2B1KPP1/1P6/6R1 w - - 3 30 | Re1 | Is the move from e3 to f2 legal? | Yes | legality |
5rk1/1p4pp/p3p3/3p4/1P1PnP2/P4B2/6PP/R5K1 b - - 0 25 | Rxf4 | What piece is on d8? | Empty | occupancy |
4r1k1/3b1p2/p4p1p/6n1/5P1R/1BP1Q1P1/6KP/r7 w - - 1 41 | Qxe8+ | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/p4pbp/2p3p1/2PpPbN1/7P/1NP3P1/PP3P2/R2QK2R b KQ - 0 15 | f6 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/8/5ppp/5P2/4k1PP/5r2/5K2/8 w - - 1 63 | e3f3 | Is the White king in check? | Yes | check |
2r3k1/1p3ppp/1p3p2/2n5/8/P1P2B2/1P3PPP/5RK1 w - - 0 27 | Rd1 | Is the move from f3 to e4 legal? | Yes | legality |
6RQ/p1p2r2/1p6/n3pk2/2q5/P1P5/4N3/4K3 w - - 6 31 | Qh6 | What piece is on g2? | Empty | occupancy |
r1r2bk1/5p1p/2p2pp1/p7/PnPP4/3Q1NBP/4RPP1/R5K1 b - - 0 24 | Nxd3 | Is the move from b4 to d3 legal? | Yes | legality |
rnbq1rk1/pp1nbpp1/4p2p/2ppP3/3P1P2/2N1BN2/PPP1B1PP/R3QRK1 b - - 1 10 | Nc6 | Does White have any isolated pawns? | No | structure |
r3kb1r/ppp1pppp/3q1n2/5b2/1n1P4/2N2N2/PPP1BPPP/R1BQ1RK1 w kq - 2 8 | a3 | Is the move from c1 to f4 legal? | Yes | legality |
rnbq1rk1/p1p1bppp/4pn2/1p6/2pP4/5NP1/PPQ1PPBP/RNB2RK1 w - - 0 8 | Ne5 | What piece is on f4? | Empty | occupancy |
3bk2r/3b3p/3p1p2/3Pp1p1/r1K1P1P1/1p5P/4N3/1B1R1R2 w k - 1 35 | a1a4 | Is the White king in check? | Yes | check |
6k1/5p1p/8/2bQ2P1/pr6/2q2N2/3BRK2/8 w - - 2 49 | f8c5 | Is the Black king in check? | No | check |
rbnqbkr1/pp2pppp/2p3n1/3P4/3P4/6N1/PP2PPPP/RBNQBKR1 b KQkq - 0 4 | cxd5 | What piece is on a2? | White Pawn | occupancy |
8/Q2k2pp/8/2BP1q2/8/P2p4/6PP/6K1 b - - 0 41 | a5a7 | Is the Black king in check? | Yes | check |
8/8/8/1NN5/8/8/3K4/k2N4 w - - 8 5 | Kc1 | Is the White king in check? | No | check |
rk1rnqnb/p1p2ppp/Pp6/3pp3/6b1/8/1PPPPP1P/RKBRNQNB w KQkq - 0 5 | c4 | What piece is on c5? | Empty | occupancy |
5r2/6k1/6pp/2b1pp2/2Q1n3/1P6/2P3PP/1R4K1 w - - 6 33 | f2e4 | Is the White king in check? | Yes | check |
k4b1r/p3pppp/B1p2n2/3rB1N1/7q/8/PPP2P2/R2Q1RK1 w - - 1 18 | c4 | Is the h-file open, semi-open, or closed? | semi-open for White | files |
6k1/p4pp1/2p3p1/6R1/4qP2/4n2P/r5PK/2Q3R1 b - - 4 34 | Rc2 | Identify any White knight outposts on the board. | None | outposts |
r5k1/1p2p1q1/3p2p1/p1rP2P1/2Pb4/1P5B/P1RQ4/5RK1 w - - 1 32 | Kg2 | Is the White king in check? | Yes | check |
r2q1r1k/1b2bpp1/p3pn1p/2p1N3/3p4/2N1R1Q1/PPP2PPP/R1B3K1 w - - 0 18 | d5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/2R5/8/8/7P/1kp5/4K3/r7 b - - 0 62 | Rh1 | Identify any White knight outposts on the board. | g5 | outposts |
n3k2r/p2qbpp1/4p3/1p1pP3/1Pr4p/P1PQ1P2/3BN1PP/2R2RK1 w k - 1 26 | Nd4 | Identify any White knight outposts on the board. | None | outposts |
2r2rk1/5pp1/p1nq1n1p/3pNb2/2pP1P1B/2P1PB2/6PP/2RQ1RK1 w - - 1 20 | Bxf6 | Is the move from g1 to e3 legal? | No | legality |
r3r1k1/ppb1qp1p/2p3p1/3nP3/1P3p2/2PQ1N2/P1B2PPP/R3R1K1 w - - 2 21 | Bb3 | Is the White king in check? | No | check |
5rk1/5ppp/p1N1p3/2B1P3/5nPb/1P3KqP/P1P5/3R1R2 w - - 1 25 | h2g3 | Is the White king in check? | Yes | check |
r1b1r2k/pp1n1pp1/4p3/2qpPn1P/5P2/P2B1N1Q/1PP3P1/1K1R3R b - - 6 20 | Kg8 | What piece is on f7? | Black Pawn | occupancy |
4k3/1pp2pp1/8/4P3/2Pp2P1/rP3K2/1R3P2/8 b - - 0 31 | Ra1 | Is the Black king in check? | No | check |
5r1k/3n1Ppp/2pPB3/1p6/p5b1/q2P1N2/P1P1Q1PP/2K1R2n w - - 0 21 | Kd1 | Is the move from d6 to b4 legal? | No | legality |
8/1pRQ2p1/5pk1/4p2p/8/1P4PP/P4q1K/8 w - - 5 36 | f1f2 | Is the White king in check? | Yes | check |
r2q1bk1/1b3ppp/3p4/p2P1NP1/1p6/8/PPP4P/1K1RQ1R1 b - - 0 28 | Kh8 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/5kb1/4ppp1/p2p3p/1pnP1PPP/4PN2/PP5K/3N4 w - - 0 33 | g5 | Are there any open files in this position? | Yes: c | files |
8/1Q6/1p3bk1/2p5/2P5/r2KP3/3P4/8 w - - 1 77 | a2a3 | Is the Black king in check? | No | check |
r4r2/7p/p2N1n2/1p4k1/3n4/1BN2P2/PPP3PP/2K1R3 b - - 0 23 | b4 | Is the move from f6 to a8 legal? | No | legality |
3k4/pp6/2p2npp/5b2/2P5/1P3P1P/P5P1/3B2K1 b - - 0 26 | g5 | Does Black have any isolated pawns? | No | structure |
1nrqr1k1/1pp2pp1/1n4bp/1N1P4/p1P1pB2/P1Q3PP/1P3PBK/3RR3 b - - 0 26 | Qd7 | Identify any White knight outposts on the board. | None | outposts |
4r3/p1prbk1p/Ppp2p2/1n4p1/1N1P4/2P1R1B1/1P3PPP/4R1K1 b - - 1 27 | f5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/ppp3p1/3p4/4p2k/4P3/2PP2Q1/PP2n3/R1K5 w - - 1 29 | d4e2 | Is the White king in check? | Yes | check |
4k2r/4bpp1/p1r1p2p/4P1P1/N1p2P1P/P7/1PP5/2KR3R b k - 0 24 | c3 | Does Black have any isolated pawns? | Yes: a6, c4 | structure |
1r3rk1/4bppp/q2p4/P1nQp3/2P5/R3BP2/4B1PP/5RK1 w - - 2 2 | f4 | What is the material balance in this position? | Equal | material |
1r3rk1/3q1pp1/1n3n2/p4pN1/Pb1P1P2/2NQ4/1P1B3P/R4RK1 b - - 3 23 | Rfc8 | Does White have any isolated pawns? | Yes: d4, f4, h2 | structure |
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