fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r2qr1k1/pbpn1p2/1p1bpn1Q/6N1/3P4/2NB4/PPP3PP/R4RK1 b - - 2 14 | Nf8 | Is the move from d7 to d1 legal? | No | legality |
r1bq1rk1/4bpp1/p1np1n1p/2p1p3/PpN1P3/2PP1N2/1PB1QPPP/R1BR2K1 b - - 1 14 | Qc7 | Does Black have any isolated pawns? | No | structure |
2kr3r/B1p2pp1/1p1b2n1/1P6/P1P3q1/4PNP1/2Q3KP/R4R2 b - - 0 20 | Rh3 | Are there any open files in this position? | Yes: d | files |
2kr4/4R3/p1pBpp2/4P3/6PK/3n4/8/8 w - - 4 46 | exf6 | Identify any Black knight outposts on the board. | b5, e5, g5 | outposts |
8/6k1/8/5PPB/6K1/b7/8/8 b - - 0 2 | Be7 | What is the material balance in this position? | White is up 2 pawns of material | material |
6k1/2R3bp/pp4p1/2p2p2/2P2B2/3r1K2/P5PP/8 w - - 3 32 | d8d3 | Is the White king in check? | Yes | check |
2kr4/ppp2rp1/8/3q2Kb/P3p2P/2PP4/1P3P2/RN5R w - - 0 29 | e5e4 | What is the material balance in this position? | Black is up 8 pawns of material | material |
8/3k1p2/p7/3K2P1/PP1B2n1/4pp2/5P2/8 w - - 0 42 | Ke4 | Is the Black king in check? | No | check |
rn1qkb1r/pb1pnppp/1p2p3/8/3NP3/2NB4/PPP2PPP/R1BQ1RK1 b kq - 2 7 | Ng6 | Are there any open files in this position? | No | files |
2r2rk1/p1q2p1p/1p2p1p1/4Q3/3P2RP/8/5PP1/5RK1 w - - 2 24 | c3c7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1bqkb1r/pppn1ppp/3p1n2/4p3/2BPP3/2N2N2/PPP2P1P/R1BQK1R1 b Qkq - 3 7 | h6 | Are there any open files in this position? | No | files |
3r2k1/1pq1bpp1/2p1p2p/4P2P/p1P1nP2/8/PPQ3P1/1KB1R3 w - - 0 26 | Rxe4 | Is the move from g2 to c8 legal? | No | legality |
r2qr1k1/1p2bpp1/p1bp1n1p/2p5/4PP2/1PN1BQ1P/1PP1N1P1/R3R1K1 w - - 2 17 | Nd5 | Is the move from e4 to h1 legal? | No | legality |
8/5k2/3P4/8/3K4/Pp5P/8/8 b - - 0 62 | b2 | Is the move from f7 to e8 legal? | Yes | legality |
rnbQkbnr/ppp2ppp/8/4p3/4P3/8/PPP2PPP/RNB1KBNR b KQkq - 0 4 | d1d8 | What is the material balance in this position? | White is up 9 pawns of material | material |
r2rb1k1/pp2qpp1/1bn1p2p/2N5/1PBP4/P4N2/4QPPP/2RR2K1 w - - 3 18 | Qe4 | Identify any White knight outposts on the board. | None | outposts |
r1b3k1/pp4bp/2npPq2/6NQ/8/3B4/P1P5/2BK4 w - - 1 23 | e7 | Does White have any isolated pawns? | Yes: a2, c2, e6 | structure |
r6r/pQ2b1pp/1pn5/kP1p4/P2Pp2q/2P1NP2/3B3P/R3K2R w KQ - 3 24 | Kd1 | Are there any open files in this position? | No | files |
r3r1k1/2p2p1p/bpn2qp1/p3p3/2P1P3/2P1B1PP/P3QPB1/R3R1K1 b - - 0 20 | a4 | What piece is on b4? | Empty | occupancy |
r1bq1bnr/ppp2Qp1/2nk3p/1N2pp2/2B1P3/8/PPPP1PPP/R1B2RK1 b - - 5 9 | c3b5 | Is the White king in check? | No | check |
2b3k1/bppp1ppp/r7/p3q3/2P3B1/1P2P3/P5PP/R2Q1RK1 w - - 0 19 | Rf5 | Does Black have any isolated pawns? | No | structure |
1r2r1k1/1P3ppp/3b4/p1p2Pq1/Q3pR2/P3P1B1/b3B2P/3R2K1 w - - 0 35 | Rxd6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2b1r1k1/bpp2ppp/8/p2pP3/2PN3q/1P2P1r1/PB2B2P/R2Q1RK1 w - - 0 19 | Kh1 | Identify any White knight outposts on the board. | None | outposts |
r3k3/pp1qnp2/4p1n1/P2pP3/6r1/P1pQBNP1/2P2P1P/R3K2R b KQq - 2 17 | Nc6 | Identify any White knight outposts on the board. | h4 | outposts |
2r1k3/p4ppp/bp1rp3/8/1RPP4/3K2P1/P4PBP/1R6 w - - 0 25 | Ra4 | Does White have any isolated pawns? | Yes: a2 | structure |
r2q1rk1/p4pb1/bp1p1npp/2ppn3/2P1P3/1PN1BP2/P2QN1PP/3RKB1R w K - 0 14 | Nxd5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
1r1r1bk1/6pp/p2p1Pp1/3Pp2P/1pq5/4B3/PPP2Q2/2KR3R w - - 0 25 | f7+ | Does White have any passed pawns? | No | structure |
kn4B1/p1K2pn1/P4P2/8/2p2p1p/2P2P1p/7P/2r5 w - - 0 1 | Bxf7 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r1bq1rk1/pp3pbp/4n1p1/1B2n3/3N4/1PN1B2P/P4PP1/R2Q1RK1 w - - 1 17 | Nxe6 | Does Black have any passed pawns? | No | structure |
r2q1rk1/pb1nbppp/1p1ppn2/6B1/2PQ4/2N2NP1/PP2PPBP/R2R2K1 w - - 0 11 | Nb5 | Is the Black king in check? | No | check |
6k1/p4pp1/8/3p4/3Q1rKp/P1B1P2P/2q3P1/8 w - - 0 40 | Kxf4 | Identify any Black knight outposts on the board. | c4, e4 | outposts |
8/4k3/p2p4/3Ppp1r/5p1P/2KP1P2/P7/7R w - - 0 29 | a4 | Does White have any passed pawns? | Yes: h4 | structure |
5r2/pp3Pk1/8/4Qbq1/2P2R2/8/PP4PK/8 b - - 6 37 | Kg6 | What piece is on g2? | White Pawn | occupancy |
5k2/5p1p/2qb2p1/pp1p1p2/n1pP1P2/P1P2PP1/1PNKQ2P/2B5 b - - 4 34 | b4 | Does Black have any isolated pawns? | No | structure |
r2qkb1r/1b1p2p1/p1n1pP2/1p4Np/1P3Qn1/P2B4/1BP2PPP/RN3RK1 b kq - 0 14 | e5f6 | What is the material balance in this position? | White is up 1 pawn of material | material |
1q4rk/1bb2p1p/pp1p2r1/3Np3/2P5/5Q2/PP1BN2P/3R1B1K b - - 0 30 | Qd8 | Identify any Black knight outposts on the board. | e5, f4 | outposts |
r1b2rk1/q1b2p1p/p1p3p1/1p2P3/2n2PP1/1NN3nP/PPQ3B1/R1BR3K w - - 3 24 | Kh2 | Is the move from h1 to h2 legal? | Yes | legality |
rnb1k2r/pp2bppp/4pn2/3p2B1/3P4/1RqB1N2/P1PN1PPP/3Q1RK1 b kq - 3 10 | Qc7 | Does White have any isolated pawns? | Yes: a2 | structure |
r3k2r/2q1bp1p/4p1p1/p1p1P3/3pNP2/1P5Q/n1PR1BPP/3R3K w kq - 0 23 | Bh4 | What piece is on h5? | Empty | occupancy |
8/8/7N/8/p7/K7/2P5/3k2N1 b - - 0 5 | Kxc2 | Identify any White knight outposts on the board. | None | outposts |
1Q6/pp1kr2R/2p2r2/3p1P2/3P4/3qP3/PP5K/8 w - - 6 35 | Qxb7+ | Is the move from b2 to b3 legal? | Yes | legality |
r2qkb1r/pb1n1ppp/1p2pn2/2pp4/2P5/1PN1PN2/PBQPBPPP/R3K2R w KQkq - 0 9 | d4 | Are there any open files in this position? | No | files |
r1bqk1nr/pppp1ppp/2n5/8/Qb2P3/8/PPP2PPP/RNB1KBNR w KQkq - 3 5 | f8b4 | Is the White king in check? | Yes | check |
1r1Q1rk1/4ppb1/6p1/1P3b1p/Nn5P/1N3P2/PP4P1/R3KB1R b KQ - 0 18 | Rfxd8 | Does White have any passed pawns? | Yes: a2, b2, b5 | structure |
r1b2rk1/p3bppp/2p5/3p4/3q2n1/2NB1PP1/PPP4P/R1BQR1K1 w - - 0 14 | f6d4 | Is the White king in check? | Yes | check |
2r1n3/3nk1p1/1q2p2p/r3P3/2p1NPQ1/P4R1P/1PP5/4R2K b - - 2 24 | Qc6 | Are there any open files in this position? | Yes: d | files |
r3r1k1/p4qpp/1pP2p2/3b4/3Nn3/1Q5P/PB3PP1/R3R1K1 w - - 1 26 | Qc2 | Identify any White knight outposts on the board. | None | outposts |
2r1k3/1p1bppb1/p2p1Pp1/4n3/3NP3/4BP2/PPPqB3/1K1N4 w - - 0 18 | fxg7 | Is the Black king in check? | No | check |
4r2k/6R1/4p2P/p2n4/1pp3P1/P7/1P1B4/1K6 w - - 4 43 | g5 | Is the move from g7 to d2 legal? | No | legality |
2k3r1/p1p2p2/2p5/8/3P1pp1/2P1N3/PP2K3/4R3 w - - 0 26 | Nf5 | Are there any open files in this position? | Yes: e, h | files |
rnq1kb1r/pp3ppp/2p1pn2/2Pp1b2/3P1B2/1QN1PN2/PP3PPP/R3KB1R w KQkq - 1 9 | Qa4 | Identify any Black knight outposts on the board. | None | outposts |
4rk2/pp1b1pp1/8/4P3/2p1R3/2Pp1PB1/PP5P/6K1 b - - 1 27 | Bc6 | Identify any White knight outposts on the board. | d6 | outposts |
r3k1nr/p2bqppp/2pb4/4p3/2PpP3/3B4/PP1NQPPP/R1B2RK1 w kq - 0 12 | c5 | Does Black have any isolated pawns? | Yes: a7 | structure |
8/1pp2p2/3p2bp/p1kP2p1/2P5/PP3P1P/1K1RB1P1/4r3 b - - 6 43 | h5 | Identify any Black knight outposts on the board. | None | outposts |
5r1k/pp3ppp/2p4N/4q3/4P3/8/PPP2PPP/3R2K1 w - - 0 22 | Nxf7+ | Identify any White knight outposts on the board. | None | outposts |
r1b1r1k1/1p5p/p1p3p1/q4n2/3pP3/3P2NP/PP2QPP1/R4RK1 w - - 1 2 | Nh1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/pp1R1pkp/6p1/5n2/8/8/4K3/7q b - - 4 48 | d1e2 | What is the material balance in this position? | Black is up 12 pawns of material | material |
8/8/7N/5R1p/5k2/1r6/6PK/8 b - - 0 51 | c5f5 | Is the Black king in check? | Yes | check |
rnbqkb1r/pp3ppp/4pn2/2pP4/P1p1P3/2N2N2/1P3PPP/R1BQKB1R b KQkq - 0 7 | Nxe4 | Does White have any passed pawns? | No | structure |
rnb1k2r/pppqbppp/4n3/3pP3/8/5N2/PPPNBPPP/R1BQ1RK1 w kq - 8 9 | Re1 | Identify any Black knight outposts on the board. | None | outposts |
8/P1K5/8/8/4q3/2k5/8/8 w - - 2 3 | Kb8 | Identify any White knight outposts on the board. | None | outposts |
r1b1k2r/p4ppp/2n1pn2/1pb5/2p5/5NP1/PP1NPPBP/R1BR2K1 w kq - 0 10 | a4 | Does White have any isolated pawns? | No | structure |
6k1/2p5/6P1/3p1R1K/1p1P1P2/7r/8/8 w - - 3 43 | Kg4 | Does White have any passed pawns? | Yes: f4, g6 | structure |
R7/4Bppk/p3b3/2Kp2P1/1p1P4/1P1r4/8/8 w - - 2 51 | Kxb4 | Does White have any isolated pawns? | Yes: b3, d4, g5 | structure |
r1bqk1nr/pp1p1pbp/2n1p1p1/2p5/2P5/2N2NP1/PP1PPPBP/R1BQK2R w KQkq - 0 6 | d4 | Is the Black king in check? | No | check |
3r3r/5R1p/1kp3p1/p3p2P/1qPpP3/2nP2P1/5QB1/5RK1 b - - 2 28 | a4 | Is the move from b6 to a6 legal? | Yes | legality |
8/3b1k2/4p1p1/1n1pP2p/2pP1P2/2P2N2/1K5P/3B4 b - - 11 42 | Na7 | Identify any Black knight outposts on the board. | h5 | outposts |
r1bq1bnr/ppppk3/2n3Qp/8/2BpP3/8/PPP2PPP/RNB1K2R w KQ - 1 9 | Qf7+ | Does Black have any isolated pawns? | Yes: h6 | structure |
8/5kp1/5p1P/8/8/2N5/2K5/2B2r2 b - - 2 64 | g5 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
3rr1k1/pb1n1q2/1ppbp1pp/5p2/1PPP4/P2B1N1P/1BQ2PP1/3RR1K1 w - - 0 21 | Qc3 | Identify any White knight outposts on the board. | None | outposts |
rbnqbrk1/pp2p1pp/2p2pn1/2Pp4/3P4/4P1N1/PP3PPP/RBNQBKR1 w KQ - 1 6 | f4 | What is the material balance in this position? | Equal | material |
r3r1k1/2pq2pp/bpn5/3p4/Q3PP2/4R1P1/PB4BP/R5K1 b - - 0 20 | Bf1 | Identify any White knight outposts on the board. | None | outposts |
5k2/p5pp/r7/2pB2p1/b1P5/6P1/R3PP1P/6K1 b - - 5 30 | Ke7 | What piece is on e4? | Empty | occupancy |
r5k1/5ppp/4p3/p7/P2N4/7P/5KP1/1b6 w - - 0 31 | g6b1 | What is the material balance in this position? | Black is up 7 pawns of material | material |
4rrk1/2pb1p2/1pq1pQp1/p3P2p/P1PR2PP/5N2/2P2P1K/8 w - - 0 33 | gxh5 | Does White have any isolated pawns? | Yes: a4, c2, c4 | structure |
8/1b3k2/pP1p1B2/P5Kp/7P/2P2P2/8/8 w - - 0 44 | f4 | Does White have any isolated pawns? | Yes: f3, h4 | structure |
r1bqk2r/pp1n1ppp/8/3P4/4p3/4B3/Pb1N1PPP/R2QKB1R w KQkq - 0 13 | f6b2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnq1kb1r/ppp2ppp/5n2/3p1b2/3P4/1Q3N2/PP2PPPP/RNB1KB1R w KQkq - 0 7 | Nc3 | Identify any White knight outposts on the board. | None | outposts |
3rr3/1pp2kpp/1n2p1b1/pP2p3/P1P1Pq2/B5NP/2Q2PP1/3R1RK1 w - - 1 24 | Qc3 | Are there any open files in this position? | Yes: d | files |
8/8/K7/8/8/7p/5k2/5N2 w - - 4 7 | Nh2 | What piece is on h1? | Empty | occupancy |
1r1q1b2/R4pk1/1p1p1n1p/1PpPpPp1/2P1P3/1KBN1P2/6P1/7Q w - - 1 46 | Bxe5 | Does Black have any isolated pawns? | No | structure |
3r1rk1/pp4pp/2n1p2q/2bN4/8/6PB/PP2PPKP/R2Q1R2 w - - 3 17 | Qc1 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
rnbqk2r/ppp1bp1p/4pp2/8/3PN3/5N2/PPP2PPP/R2QKB1R b KQkq - 1 7 | f5 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
rn2brk1/p4pbp/3q2p1/1ppP4/5B2/3N4/PP2PPPP/R2QKB1R b KQ - 3 14 | Qxd5 | Is the White king in check? | No | check |
8/1pR1rk1p/1P3b1p/3p4/3p4/1r1N4/5PPP/4R1K1 w - - 7 34 | Nf4 | Is the move from b6 to g2 legal? | No | legality |
8/7k/3r1PRP/p1p5/P1P2p2/1P3b2/3p3K/3R4 w - - 1 42 | f7 | Identify any White knight outposts on the board. | a4, c4 | outposts |
2rr2k1/p3bppp/4p3/8/4B3/4B1P1/PK2QP1q/R3R3 b - - 0 26 | c2b2 | What is the material balance in this position? | White is up 1 pawn of material | material |
6rr/3k4/1bp1p1n1/pp1pq1p1/3NP2p/P1P2PPP/1P1Q2KN/4RR2 w - - 0 24 | Qf2 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
8/5b2/3k1p1p/7P/1p6/4P3/1K2B3/8 b - - 9 80 | Ke5 | Identify any Black knight outposts on the board. | a3, c3, e5 | outposts |
8/8/8/3k4/1p1pp1p1/1P2PnP1/3NKP2/8 w - - 12 58 | Nxf3 | Are there any open files in this position? | Yes: a, c, h | files |
2r5/1k3p2/p1Np1p1p/P2Pp3/2P2bPP/8/4K3/1R6 b - - 1 36 | Kc7 | Are there any open files in this position? | Yes: b | files |
8/1p1r1k1p/p1n1p3/2R2pP1/1P6/P2NP3/4KP2/8 b - - 2 31 | Kg7 | Are there any open files in this position? | Yes: c, d | files |
r1b4r/qppk1p2/p2N3p/6p1/PPB5/5P2/1B2RP1P/R5K1 w - - 1 21 | Nxf7 | What is the material balance in this position? | Black is up 4 pawns of material | material |
7r/1p6/2p2k2/2Ppnb2/7P/P4p2/1P1N1P2/2R2BK1 b - - 0 40 | Rxh4 | Does Black have any passed pawns? | Yes: d5 | structure |
r1b1k2r/pppp1ppp/2n2q2/b7/2Bpn3/BQP2N2/P4PPP/RN3RK1 w kq - 2 10 | Re1 | Does Black have any passed pawns? | No | structure |
5b1k/r5p1/p1n4p/P1P5/3Pp3/4N3/B2B1PPP/6K1 w - - 0 36 | Bc3 | Identify any Black knight outposts on the board. | d3 | outposts |
2rq1rk1/pp3b1p/4ppp1/n2P4/1Q1NP3/3BBP2/P5PP/5RK1 w - - 0 19 | Bd2 | Does White have any isolated pawns? | Yes: a2 | structure |
5q2/2r3k1/pp1p1pPp/3PpQ2/PPP5/4P3/7P/2R4K w - - 0 37 | e4 | What piece is on g6? | White Pawn | occupancy |
r2q1k2/pp4bp/3prpp1/8/2Q5/8/P4PPP/R2R2K1 w - - 0 29 | Qxe6 | Identify any Black knight outposts on the board. | c5 | outposts |
6k1/4npp1/7p/2p1P3/p1rp1PPP/8/8/3R2K1 b - - 0 30 | h3h4 | Identify any Black knight outposts on the board. | b3, b4, c3, d4, e3 | outposts |
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