fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/p7/2R4p/3r2k1/2K5/PP2n2P/8/8 w - - 1 43 | f5e3 | Is the White king in check? | Yes | check |
1r1q1rk1/pp1bppbp/2np1np1/8/2BNP3/2N1BP2/PPPQ2PP/2KR3R w - - 7 11 | Bb3 | Are there any open files in this position? | No | files |
6b1/5p1k/5K2/6P1/5B2/3p4/8/8 b - - 0 4 | Kh8 | Does Black have any isolated pawns? | Yes: d3, f7 | structure |
8/8/4p3/5p2/2pP1Pp1/2P2kP1/Pp6/1K6 w - - 0 62 | a4 | Identify any White knight outposts on the board. | c5 | outposts |
r3r2k/2pnqppp/pp1p1n2/8/2BPP3/P1P1PQN1/6PP/2B2RK1 w - - 0 18 | Bd3 | What piece is on e6? | Empty | occupancy |
r2q1rk1/1bp1bppp/p2p1n2/np2p3/4P3/2PPBN1P/PPB2PP1/RN1Q1RK1 b - - 4 11 | c5 | Is the move from f8 to e8 legal? | Yes | legality |
r1bq1rk1/ppp1bpp1/2np1n1p/4p3/PPB1P3/1QPP1N2/3N1PPP/R1B1K2R b KQ - 1 9 | Nb8 | What piece is on h2? | White Pawn | occupancy |
b2r2k1/p1r1q1p1/7p/5P2/2p5/R4NPK/PP3R1P/2Q5 b - - 0 34 | Rd3 | Is the move from e7 to e8 legal? | Yes | legality |
2k4r/3r2N1/ppp2p1p/3bP3/P1pNnP2/6P1/1PP4K/3R1R2 w - - 2 28 | Ndf5 | Identify any Black knight outposts on the board. | None | outposts |
2k3rB/2pqb2p/p2p1p2/4n3/p2Q4/2P2bP1/PP3P1P/RN3RK1 b - - 0 19 | Qh3 | Is the White king in check? | No | check |
4n2Q/p2p1kp1/1q3p2/1p6/2b4R/P5N1/r2B1K1P/3R4 w - - 6 29 | Kf3 | Is the move from h4 to d4 legal? | Yes | legality |
1r2r1k1/1q1nbpp1/2p1p2p/8/p1PP4/P2NRQPP/1BR2P2/6K1 w - - 6 36 | h4 | Identify any White knight outposts on the board. | c5 | outposts |
8/5pp1/p1pBr3/2Pb1k1p/nP2p2P/P3R1P1/3R1P2/3K4 w - - 4 40 | Kc2 | Does Black have any isolated pawns? | Yes: a6, c6 | structure |
5r2/7p/r4k2/p1R2p2/R7/2P4P/6P1/6K1 b - - 0 33 | Re8 | What piece is on f1? | Empty | occupancy |
rnb1kb1Q/ppq4p/2p2Bp1/8/4P3/1BN5/PPP2PPP/R3K1NR w KQ - 2 13 | O-O-O | Is the White king in check? | No | check |
r3kb1r/1b3ppp/p1p1pn2/q2p4/4P3/1PNB4/PBP1QPPP/R4RK1 b kq - 2 11 | Ba3 | What piece is on d8? | Empty | occupancy |
r4rk1/p2n4/1pp1p3/8/8/2PP2K1/PP3p2/R1B2B2 b - - 0 29 | d2d3 | Identify any Black knight outposts on the board. | f5 | outposts |
4rr2/2pq2kn/pp2b3/4ppp1/1P1NP2p/P2P1PP1/3Q1NBP/2RR2K1 b - - 0 25 | exd4 | Are there any open files in this position? | No | files |
6k1/ppp4p/3p1p1P/3P1Pp1/6P1/1P6/2P4R/2K1r3 w - - 0 30 | e8e1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/3k2pp/5p2/2Brn3/1P6/2K3P1/5P2/R7 b - - 7 56 | Ke6 | Identify any White knight outposts on the board. | a5, c5 | outposts |
7r/ppp2pk1/4p3/3pN1p1/b2Pn1P1/P1P1P3/5B2/R3KB2 b Q - 1 22 | Rh1 | What piece is on h1? | Empty | occupancy |
6r1/4R3/4p2k/4Pp1p/5P2/P7/1B5P/7K b - - 2 35 | a7e7 | What is the material balance in this position? | White is up 4 pawns of material | material |
rn1q1r2/pppb1pbk/5npp/4B3/3N4/2N5/PPPQBPPP/R3R1K1 b - - 0 14 | Ne4 | What is the material balance in this position? | Equal | material |
br1r1bk1/2q2ppp/pp2P3/4p3/P3P3/1PNR2P1/2P2QBP/3R3K b - - 0 27 | fxe6 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
8/p1k1b3/1p3BP1/8/P7/3pPq2/3R1P2/1K6 w - - 0 34 | Bxe7 | Is the move from b1 to a2 legal? | Yes | legality |
1r6/4q1k1/2pp1pp1/n3P3/1rn1P3/5NP1/1P2RPB1/1Q2R1K1 b - - 0 37 | dxe5 | Does Black have any isolated pawns? | No | structure |
8/4k2p/8/7q/6p1/8/6K1/q7 b - - 1 56 | g3g2 | What is the material balance in this position? | Black is up 20 pawns of material | material |
r1bq1r1k/pp2nppp/3p1n2/2pPp3/2P1P2N/2PB2P1/P4P1P/R1BQ1RK1 b - - 0 12 | Bh3 | Is the White king in check? | No | check |
r1b1k1nr/3p1ppp/pq2p3/n1b5/B1p1PP2/2N2N2/PPP1Q1PP/R1B1K2R w KQkq - 4 12 | Ne5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
4Rb2/5n1k/6p1/3p4/8/3Br3/1PK5/8 w - - 0 50 | Rxe3 | What piece is on f8? | Black Bishop | occupancy |
rn2k2r/pp2p3/2p3Q1/3p3p/5Bnq/2N5/PPP3P1/4RRK1 b - - 1 19 | Kd7 | Does White have any isolated pawns? | Yes: g2 | structure |
r2qk2r/pp2bppp/2pnbn2/3p4/3P1BP1/2NBPN1P/PPQ2P2/R4K1R w kq - 9 13 | Nd2 | Does White have any passed pawns? | No | structure |
3r3k/2p3qp/p1n2p2/1p3nB1/8/1Q3N1P/PP3PP1/4R1K1 w - - 2 24 | Qe6 | Is the Black king in check? | No | check |
r4rk1/pp1b1ppp/3p1n2/2BP4/2P5/3B3P/P4PP1/RN3RK1 b - - 0 16 | e3c5 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1b3k1/pp5p/2pbp3/3p3n/2PPp1p1/PP2P1q1/1B1QR3/1N1R1B1K b - - 3 22 | Bd7 | Is the move from d6 to f4 legal? | Yes | legality |
r4rk1/p1pp1p2/bpn1p1p1/8/2PPP1q1/P1P5/4NPP1/R2QKB1R w KQ - 3 15 | Qd2 | Does Black have any isolated pawns? | No | structure |
rnbq1rk1/pp2ppbp/2pp1np1/8/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w - - 0 7 | d4 | What piece is on e8? | Empty | occupancy |
1r2r3/pb4kp/1p4q1/2pp2p1/3P3P/2P1NQ2/PP6/4RRK1 w - - 0 30 | h5 | Identify any White knight outposts on the board. | None | outposts |
rnbqkb1r/pp2pppp/2p2n2/3p4/2PP4/1Q3N2/PP2PPPP/RNB1KB1R b KQkq - 3 4 | h6 | What piece is on d4? | White Pawn | occupancy |
8/3k1r1p/3P4/1r6/4R3/P1p4P/2R5/7K b - - 1 49 | Rb2 | Are there any open files in this position? | Yes: b, e, f, g | files |
8/8/8/3R4/1K6/8/3k4/3r4 b - - 101 115 | e5d5 | Is the Black king in check? | Yes | check |
8/8/k3p3/p1p1Pp2/P2p1P2/1P1P2Q1/1K6/7q b - - 0 125 | Qd1 | Does Black have any passed pawns? | No | structure |
r1b1kb1r/ppp1qppp/2n5/4P3/4Q3/8/PPP2PPP/RNB1KB1R w KQkq - 1 8 | Nc3 | Is the Black king in check? | No | check |
3k3r/pR5p/2p5/2B5/3b4/5P2/P4P1P/3K4 b - - 2 24 | Kc8 | Does Black have any passed pawns? | Yes: c6 | structure |
3nk3/1p3p1p/p5p1/PP2b3/2P1B2P/8/3B1PP1/6K1 w - - 1 33 | Bxb7 | What piece is on g2? | White Pawn | occupancy |
rn1qkb1r/p1p1pppp/1p3n2/3p1b2/3P4/1QP2N2/PP2PPPP/RNB1KB1R w KQkq - 0 5 | c4 | Identify any White knight outposts on the board. | None | outposts |
8/1R3k1p/1p1r2p1/p1p5/b4P2/4K1PB/P6P/8 b - - 17 40 | Kf8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1rb2bk1/2q2p1p/p2p1Bp1/3P4/2P2Q2/3p1N1P/P4PP1/4R1K1 w - - 1 22 | Bc3 | What piece is on b5? | Empty | occupancy |
4r1k1/4npp1/4q2p/4p2Q/4B3/4BNPP/5P2/6K1 w - - 9 37 | Qxe5 | Does White have any passed pawns? | No | structure |
8/7k/7p/r2p4/8/3R3P/5PPK/8 w - - 2 49 | g4 | Are there any open files in this position? | Yes: a, b, c, e | files |
rr4k1/1bp2ppp/p2b4/1p2N3/1n6/1PNP3P/1PP1RPP1/R1B2K2 b - - 3 17 | Re8 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r1q2rk1/pp1n1p1p/1n4p1/2bPP1B1/7Q/1BN2P2/PP5P/R3K1R1 w Q - 6 18 | Ne4 | What is the material balance in this position? | White is up 1 pawn of material | material |
5rk1/Q4pp1/3qp3/3p2p1/8/6P1/P4P1P/2R3K1 b - - 0 24 | d1c1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qkb1r/pb1n1ppp/1p6/1Npp2N1/8/1P1PP3/PBQ1BP1P/R3K2R b KQkq - 0 14 | a6 | What is the material balance in this position? | White is up 2 pawns of material | material |
5rk1/pbr2ppp/1p2n3/3p4/3P1P1q/PQ1BP3/3RN1PP/5RK1 b - - 4 22 | Qe7 | Identify any Black knight outposts on the board. | a5 | outposts |
1r4k1/R5bp/1p2q3/2pQPp2/2Pp1B2/6P1/4P2P/6K1 b - - 1 33 | Qxd5 | Is the move from b8 to f8 legal? | Yes | legality |
1k5r/8/p2q4/Pp1P4/1Pp1p1P1/2P3p1/6K1/3QR3 b - - 0 44 | Qf4 | Is the move from b8 to f4 legal? | No | legality |
6r1/1pq1bkp1/p1rppnNp/4p1nP/2P1P3/4NQ2/PP3PP1/R1B2RK1 w - - 5 24 | Qe2 | What piece is on h4? | Empty | occupancy |
r1q3k1/1ppb1pb1/3p2p1/1NnP3p/p1P5/4P1PP/PPQ3BK/R2R4 b - - 0 20 | Be5 | Are there any open files in this position? | No | files |
5r1k/R7/p4P2/1r4P1/5B2/6K1/8/8 b - - 2 44 | Kg8 | What piece is on a4? | Empty | occupancy |
3Q2k1/5p2/5Kp1/7p/7P/8/6P1/8 b - - 9 55 | c7d8 | Is the Black king in check? | Yes | check |
r2qkb1r/pp3ppp/2n1pn2/3p1b2/3P1B2/2P2N2/PP1N1PPP/R2QKB1R w KQkq - 0 8 | Bb5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1bqk2r/pp1n1ppp/3bpn2/2pp4/3P4/2PBPN2/PP1N1PPP/R1BQ1RK1 b kq - 4 7 | O-O | Identify any Black knight outposts on the board. | None | outposts |
rn1q1rk1/ppp1ppbp/5np1/8/2BP2bQ/2N2N2/PPP3PP/R1B2RK1 b - - 7 9 | Nc6 | What piece is on e1? | Empty | occupancy |
1r1r4/pb1qnpkp/1p2p1p1/2p5/4BPP1/2PPN3/PP4QP/3R1RK1 w - - 1 22 | Rde1 | What piece is on g5? | Empty | occupancy |
r1q2rk1/1pp1ppbp/1nb3p1/p1N1P3/8/1P3N1P/2P1QPP1/R1BR2K1 w - - 3 18 | Nd4 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/5pp1/2pN1q1p/2Pp4/5n2/2PBB3/PP3PPP/R3R1K1 w - - 2 24 | g6f4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2q1rk1/1b1pbppp/p1n1p3/1p6/4PP2/2N1B3/PPP1BQPP/3R1R1K b - - 6 13 | Rc8 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
8/8/8/8/R2Q4/1P4P1/k6P/6K1 b - - 0 55 | a6a4 | Identify any White knight outposts on the board. | a4, c4, f4, h4 | outposts |
8/5R2/P5p1/6k1/6P1/6PK/8/8 b - - 0 54 | a5a6 | What is the material balance in this position? | White is up 7 pawns of material | material |
8/7k/4p1pp/5q1P/pN6/Pn6/KP4P1/1Q6 w - - 0 42 | hxg6+ | What is the material balance in this position? | Equal | material |
r1b1r1k1/1pp2pbp/4p1p1/p3P3/PqP1Q3/5N1P/2P2PP1/R1BR2K1 b - - 2 20 | Qc5 | What is the material balance in this position? | Equal | material |
r1r3k1/pp2bpp1/n2ppn1p/P7/3NP2B/2P2P2/1P4PP/RN1R2K1 b - - 2 16 | g5 | What is the material balance in this position? | Equal | material |
r2qkb1r/p2n1ppp/n7/2p1P3/Pp1p4/5NN1/1P3PPP/R1BQ1RK1 w kq - 0 13 | Ng5 | What piece is on g3? | White Knight | occupancy |
1r3rk1/p1qbppbp/3p2p1/n7/Np1PPP2/1P1QB1PP/2P3B1/R3R1K1 b - - 2 19 | Rfc8 | What piece is on a6? | Empty | occupancy |
r1bq1rk1/p3nppp/8/3p4/1b6/2N5/PP2BPPP/R1BQ1RK1 w - - 0 12 | Bf3 | Identify any Black knight outposts on the board. | None | outposts |
r3k2r/1b1pq1pp/p1n1p3/1p6/4P3/2N5/PPP1BQPP/3R1RK1 w kq - 2 16 | Qb6 | Are there any open files in this position? | Yes: f | files |
r2qkb1r/pb3pp1/1p1p1n1p/2p1p3/2P5/2NP1NP1/PP2PPBP/R2Q1RK1 w kq - 0 10 | b3 | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/p4pp1/bpnppn1p/2p3B1/2PPP3/P1P3N1/R4PPP/3QKB1R w K - 0 12 | h4 | Does Black have any passed pawns? | No | structure |
r1bnk2r/pppqbppp/3p4/3P4/4n3/5N1P/PP2BPP1/RNBQR1K1 w kq - 7 11 | Nd4 | Identify any Black knight outposts on the board. | None | outposts |
rn1q1rkR/pppbb1p1/4p3/3pP1P1/3P4/2N5/PPP2PP1/R2QK3 b Q - 2 13 | Kxh8 | What is the material balance in this position? | Black is up 4 pawns of material | material |
3qr1k1/rb4p1/2p1pp1p/p1P1B3/8/P1Q3P1/P3PPBP/1R4K1 w - - 0 23 | Bd6 | Is the move from b1 to e4 legal? | No | legality |
1k5r/1p2bppp/4p3/1Nn5/5B2/5P2/PPP3PP/2KR4 b - - 4 22 | e3f4 | Is the Black king in check? | Yes | check |
2r5/8/1p1Pk3/p3p1p1/P5P1/1P1R2K1/8/8 w - - 0 47 | b4 | Identify any Black knight outposts on the board. | d4 | outposts |
1k3Q2/1p6/p3p1q1/3pP2p/8/7P/PP4P1/K7 b - - 3 32 | Ka7 | What piece is on h5? | Black Pawn | occupancy |
5rk1/1p4p1/2p1p2p/p2pp3/P3P1nP/2PP2q1/1P2Q1N1/R4NK1 b - - 1 29 | Qh3 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/1PK5/3B4/5N2/8/7p/6k1/1r6 w - - 0 68 | Nh4+ | Is the move from f5 to h2 legal? | No | legality |
r3r1k1/3b1p1p/1q3npQ/pp1P4/3N4/1PP1NP2/1P5P/R2R2K1 b - - 0 22 | Re5 | Identify any White knight outposts on the board. | c6, d4 | outposts |
r2qrbk1/5pp1/b2p1n1p/4p3/Q1N1P3/2P4P/PP3PPB/1R3RK1 w - - 0 21 | c8a6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkb1r/pppppp1p/5np1/8/3P4/2N5/PPP1PPPP/R1BQKBNR w KQkq - 0 3 | Bf4 | What piece is on h7? | Black Pawn | occupancy |
rn1q1rk1/1b2bppp/p2p1n2/1p2pNP1/4P3/2N4P/PPP3B1/R1BQ1RK1 b - - 0 14 | Nfd7 | Does White have any isolated pawns? | Yes: e4 | structure |
8/8/p3p3/1p2Pk2/1P1p2p1/P2K2P1/8/8 w - - 4 8 | Kxd4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbk2r1/pppp1pBp/8/8/2B2q2/8/P5PP/R2QR1K1 w - - 1 14 | Qg4 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/p1p1bppp/1p2pn2/4N3/3P4/3B4/PPP2PPP/R1BQ1RK1 w - - 2 11 | Nc6 | Does White have any isolated pawns? | No | structure |
r5k1/p1p2ppp/3q4/1p6/1nBP4/4r1P1/PQ4P1/2KR2NR w - - 0 19 | Bxf7+ | What piece is on e3? | Black Rook | occupancy |
r2q1nk1/1b2rppp/p7/1p2N3/2pPpP2/4PQ2/PP2N1PP/2R1R1K1 w - - 0 19 | Qg3 | Identify any White knight outposts on the board. | None | outposts |
2b1k3/r3n2p/P2R2pb/3Pp3/4P3/5P2/1P3KBP/R7 b - - 0 36 | Bf8 | Is the move from e5 to d1 legal? | No | legality |
4r3/ppp1qkpp/5n2/2b2b2/2PN4/5PP1/PP3K1P/RNQ2B1R b - - 0 15 | Ng4+ | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
b7/8/4k2p/N7/1p3pP1/1P2K3/8/8 w - - 0 38 | g5f4 | Is the White king in check? | Yes | check |
3r1rk1/pp3ppp/8/1b2N3/1n6/1P2B2P/P2K1PB1/R6R w - - 7 20 | a8d8 | Is the White king in check? | Yes | check |
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