fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1nq1k1nr/r3pp1p/p2p2p1/3P4/P3P3/8/2P2PPP/1RBQ1RK1 w k - 0 16 | Qd4 | Is the move from d5 to e2 legal? | No | legality |
rnb1kb1r/ppq1pppp/5n2/3p4/2P5/P3PN2/1P1N1PPP/R1BQKB1R b KQkq - 0 7 | dxc4 | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/pbpnbppp/1p2pn2/3p4/2PP4/1PNBPN2/PB3PPP/R2Q1RK1 b - - 5 9 | c5 | Does Black have any passed pawns? | No | structure |
4r1k1/6p1/1Q1P1p1p/p7/q1P2R2/6Pb/3NrP2/3R2K1 w - - 0 36 | Qb3 | What piece is on g7? | Black Pawn | occupancy |
r1b2rk1/pp3ppp/4p3/2ppq3/8/P1P1P2P/2PK2P1/R2Q1B1R w - - 0 15 | f4e5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r5k1/pp1qnrp1/3p3p/2pPp3/2P1B3/2P1BPPb/P4R1P/3QR1K1 b - - 0 22 | Bf5 | Is the White king in check? | No | check |
r3nrk1/1p1bbppp/pB2p3/3pPP2/8/2N5/PPP1B1PP/2KR3R w - - 1 16 | Bg4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/1r4k1/3p2pp/2p2p2/4nq2/4RN1P/1P2K1P1/Q7 b - - 3 38 | Re7 | What piece is on c5? | Black Pawn | occupancy |
8/5p1k/P2pbn1p/1p1p3q/3P1p2/Q1P5/5PPP/2R2RK1 b - - 0 1 | f3 | What piece is on f3? | Empty | occupancy |
8/p6p/1p2p1k1/3p2Q1/3P4/2P3bN/Pn2q3/2K5 b - - 5 48 | Kf7 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r3rbk1/1bp2pp1/p1q2n2/1p2p3/2n1P3/P1P2Q1P/BP3PPN/R1B1RNK1 b - - 2 19 | Nxe4 | Is the Black king in check? | No | check |
3qr3/1b1rb2Q/p2p1kp1/1p1np3/4P3/P2BB3/1PP3PP/4R2K w - - 2 24 | exd5 | What piece is on e3? | White Bishop | occupancy |
r4rk1/pb1n2pp/1ppqp3/3n1p2/3P4/1PNBPN2/P4PPP/R1Q2RK1 w - - 0 14 | Rd1 | Is the move from c1 to h4 legal? | No | legality |
5k2/R3bpp1/1p4n1/1b3PP1/3N4/1N2B3/P3r3/6K1 b - - 2 31 | Re1+ | Does White have any isolated pawns? | Yes: a2 | structure |
5r2/6kp/p5p1/1p1Q1p2/1P4P1/P6P/2P2R2/5RK1 w - - 2 37 | g8g7 | What is the material balance in this position? | White is up 14 pawns of material | material |
3q1rk1/pp1bppb1/3p2p1/2r3Bp/3NPP1P/1BN5/PPP1Q1P1/2KR3n b - - 1 18 | a5 | Does Black have any isolated pawns? | No | structure |
Q3k2r/p2n3p/4pp2/8/3P4/q1p5/P4PPP/5RK1 b k - 1 20 | Kf7 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
2r1rbk1/3n4/1q1Pp1p1/1p1b4/8/PP5P/1B1Q2PN/1B3R1K w - - 2 29 | Qg5 | Identify any White knight outposts on the board. | b4, g4 | outposts |
r2qk2r/3bppbp/p1p2np1/4p3/8/2N1BQ1P/PPP2PP1/2KR1B1R w kq - 0 12 | Bc4 | Are there any open files in this position? | Yes: d | files |
6k1/5pp1/3N2b1/3Bp1B1/5P1K/8/6r1/8 b - - 0 44 | Rd2 | Is the move from f7 to f8 legal? | No | legality |
r1b4r/pp2kppp/2nb1n2/1B6/3P1p2/5N2/PPP3PP/RNB2RK1 b - - 1 10 | Rd8 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/p2nnpp1/4p2p/p1qpP2P/3N4/2P5/2P1QPP1/R1B2RK1 w - - 0 17 | Ba3 | Does Black have any passed pawns? | Yes: a5, a7 | structure |
r5k1/1p2qpbp/2p3p1/p1nnBN2/3p2Q1/2PB3P/PP3PP1/4R1K1 b - - 6 22 | Qe6 | Is the move from d5 to a5 legal? | No | legality |
5n2/p6k/3Np2B/1p1pP3/3P4/8/8/7K w - - 0 47 | Bxf8 | Is the Black king in check? | No | check |
6k1/1R6/4p2p/4K3/2r2PP1/8/8/8 b - - 1 67 | h5 | Identify any White knight outposts on the board. | e5, h5 | outposts |
r1bq1rk1/ppp2ppp/1bnp1n2/4p3/PPB1PP2/2PP1N2/6PP/RNBQK2R b KQ - 0 8 | Ng4 | What is the material balance in this position? | Equal | material |
2r3k1/R2n1pp1/4rn1p/1p2p3/1p2P3/2N2N1P/2P2PP1/1R4K1 w - - 0 29 | Rxb4 | Is the a-file open, semi-open, or closed? | open | files |
1rb2rk1/p1p2ppp/2qB4/3R4/2P1N3/bP6/P1Q2P1P/1K5R b - - 1 1 | Bxd6 | Is the move from h7 to f2 legal? | No | legality |
6n1/p2Bp1kp/3p1pp1/n1pP2P1/5P1K/P1r4P/7r/1QB5 b - - 0 50 | f5 | Is the move from h2 to a1 legal? | No | legality |
2kr3r/2n5/p1pBpp2/4P3/5PP1/3q1QKP/8/8 w - - 0 42 | Qxd3 | Does White have any isolated pawns? | No | structure |
r4rk1/p1pp1p2/bpn1p3/7p/2PPq3/P1P5/3QBPP1/R3K2R b KQ - 1 16 | f6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r2qkb1r/2p1pp1p/p4np1/n7/3P2b1/2N1PN2/PP2BPPP/R1BQK2R w KQkq - 0 10 | g7g6 | What is the material balance in this position? | White is up 1 pawn of material | material |
2r4k/r3q1p1/pn2p2p/2p1P3/3p1PB1/Q7/PP4PP/2R2RK1 w - - 3 24 | f5 | Identify any White knight outposts on the board. | e5 | outposts |
8/8/8/8/8/P2pk3/7K/4Q3 b - - 3 53 | f1e1 | What is the material balance in this position? | White is up 9 pawns of material | material |
3q1r2/pb3Npk/1p6/3pP3/2r2QP1/8/Pn3P2/3RR1K1 w - - 1 25 | Qh2+ | Does White have any passed pawns? | Yes: e5 | structure |
r4rk1/pp4pp/2pp1q2/4n1N1/4P3/3P1P2/2P3QP/2RK3R w - - 4 22 | d7e5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4r3/p1R4p/bp3ppk/3N4/4nP2/P3K1P1/4P2P/5B2 w - - 11 39 | Kd4 | Does Black have any isolated pawns? | No | structure |
r1q3k1/pp2prbp/5pp1/1Q1Pn3/8/2N1RPB1/PP3P1P/R5K1 w - - 6 20 | Rae1 | What piece is on f4? | Empty | occupancy |
r2k1b1r/ppqB2pp/2p1Q3/8/1P2p3/2B5/P1P2P2/3RK3 w - - 1 27 | Qe8# | Does Black have any passed pawns? | Yes: h7 | structure |
2kr1b1r/1b2nppp/p1n1p3/2p1P3/1pP1B3/5N2/PP1P1PPP/RNB2RK1 b - - 2 14 | Nd4 | Identify any Black knight outposts on the board. | None | outposts |
r1b1k1nr/ppp2ppp/2n5/4P3/2B1p3/8/PPP2PPP/RNBK3R w kq - 1 8 | Bf4 | What piece is on b2? | White Pawn | occupancy |
2kr3r/pppq2bp/2n1b1p1/3p4/3P4/2PB1Q2/PPN3PP/R1B2RK1 w - - 2 16 | Bf4 | Is the move from b2 to b3 legal? | Yes | legality |
4Q3/7k/p2p3p/5N2/1p6/1PbPK3/P7/4r3 w - - 7 53 | b1e1 | Is the White king in check? | Yes | check |
r1bqr1k1/ppp3bp/3ppnp1/6B1/1nPNP3/2N5/PP2BPPP/R2Q1RK1 b - - 1 11 | Bd7 | Are there any open files in this position? | No | files |
5bk1/3n2pp/p7/3N4/1p1P1B2/7P/PP3PP1/2r3K1 w - - 0 28 | c8c1 | Is the White king in check? | Yes | check |
8/8/P7/8/4p3/4qpk1/8/5K2 b - - 0 59 | b5a6 | What is the material balance in this position? | Black is up 10 pawns of material | material |
r1bqk1nr/pp4bp/2Bp2p1/4pp2/8/P3PN1P/1PP2PP1/RNBQK2R b KQkq - 0 9 | b5c6 | Is the White king in check? | No | check |
r1b2rk1/5p1p/pq1p2pQ/3P2P1/1p3P1P/3P4/PP6/2K1R2R b - - 0 23 | Bg4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3r1k1/pbp1qppp/1p3n2/8/2PP4/1Q3N1P/P4PP1/R1B2RK1 w - - 3 19 | Bb2 | What is the material balance in this position? | Equal | material |
2r3k1/pp1q1p2/1n4p1/1N1p2Pp/P2Q1P2/1P1R4/2r4P/1K2R3 w - - 0 30 | Nxa7 | Identify any White knight outposts on the board. | None | outposts |
1r3rk1/2pq1pb1/p2pb1pp/2p1p3/3BP1P1/1PQP2NP/P1P1NP2/2KR3R b - - 0 19 | cxd4 | Are there any open files in this position? | No | files |
8/5kpp/pp3p2/8/3n4/N7/PP3PPP/3r2K1 w - - 0 29 | c1d1 | Is the White king in check? | Yes | check |
3rr1k1/1bq2pbp/pp2p1p1/3Pn3/2PN2n1/1PN2PQ1/PB4PP/2R1RBK1 b - - 2 19 | Nxf3+ | What is the material balance in this position? | White is up 1 pawn of material | material |
r3kb2/pb1q4/4pp1r/1N4p1/P1ppP1p1/6B1/1P2QPPP/R4RK1 b q - 0 19 | e5 | Identify any White knight outposts on the board. | None | outposts |
8/p4pkp/4p1p1/b3p3/P3P3/2rB3P/1R2KPP1/8 w - - 6 33 | Rc2 | Does Black have any passed pawns? | No | structure |
r1bq1r2/1ppk2p1/1p3pBp/3p1N2/5B2/P7/1PP3PP/4RRK1 w - - 0 19 | Nxg7 | What piece is on f2? | Empty | occupancy |
6k1/5p1p/pp4p1/3P4/8/7P/PPr2PP1/3R2K1 b - - 0 36 | Kf8 | Identify any Black knight outposts on the board. | None | outposts |
r4bk1/p1nr1pp1/1qNNp2p/1Pp1P2b/2B2P2/P1Q3P1/7P/2R1R1K1 w - - 11 33 | a4 | Are there any open files in this position? | Yes: d | files |
6rk/6p1/p6p/1p6/2pQR3/P4P1P/1P3KP1/2q5 b - - 0 44 | c3 | Is the Black king in check? | No | check |
N1b2k1r/1p1nq1pp/p2n1b2/2p1p3/P1B2P2/4B3/1PP3PP/R2Q1RK1 b - - 0 17 | Nxc4 | What is the material balance in this position? | White is up 2 pawns of material | material |
2R5/4k3/8/3b1p2/4p1r1/2N1P2K/P6P/8 b - - 3 46 | Be6 | Does Black have any passed pawns? | No | structure |
2r4r/1p3pk1/4b1pp/1BqpP3/P1n2Q1P/6R1/5PP1/2B1R1K1 b - - 6 32 | Qe7 | Is the move from c8 to f7 legal? | No | legality |
r1b2r2/pp1n2pk/2nbq3/2pp4/3P4/2P2N2/PP1N1PPP/R1BQ2K1 w - - 0 13 | Ng5+ | Identify any White knight outposts on the board. | None | outposts |
6k1/3n1b2/p2P3p/5p2/3p1B2/1p1P3P/1P4PK/rB1R4 w - - 3 41 | Re1 | Does White have any isolated pawns? | Yes: b2, d3, d6 | structure |
8/p5p1/1p3p2/1P2k2p/P3P2P/4K1P1/8/8 b - - 1 45 | g5 | Is the d-file open, semi-open, or closed? | open | files |
5r2/1b2npkp/2nq2p1/2rp4/1p6/1P2PN2/1Q1NBPPP/R4RK1 b - - 3 23 | b1b2 | Is the Black king in check? | Yes | check |
r1bqnrk1/pppp1ppp/1b6/3NP3/B2n4/3N4/PPPP1PPP/R1BQK2R b KQ - 2 9 | Qh4 | Does Black have any isolated pawns? | No | structure |
r3r1k1/p1p1qp2/1bN1bn2/8/6p1/1NP1p1B1/PP2Q1PP/3RK2R b K - 3 21 | Qf8 | What piece is on b7? | Empty | occupancy |
1r4n1/1p1q1k2/3b1pn1/2p1p1p1/p1PpP2r/P2P1N1P/1P1BNPQ1/R3K2R b KQ - 5 25 | Rh6 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r6r/1kpnbp2/ppp1q1p1/4p2p/PPN1P3/3P4/2PBQPPP/RR4K1 w - - 0 19 | Re1 | Identify any White knight outposts on the board. | None | outposts |
2k5/8/1KP3p1/8/5Pp1/6P1/8/8 w - - 1 44 | c7 | Is the move from g3 to g5 legal? | No | legality |
8/3k4/2p1bPBp/1pP1p3/p5p1/P1K1P1P1/7P/8 w - - 4 44 | Be4 | Is the Black king in check? | No | check |
R7/8/5kpp/4p3/5PPP/p3P3/1b3K2/8 b - - 1 41 | g1f2 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1nq1r2/4ppk1/pp1p1npp/P1pP2N1/2P1N3/R7/1P1Q1PPP/4R1K1 w - - 0 21 | Nh3 | Does Black have any passed pawns? | No | structure |
r1b2rk1/2q1bppp/p1npp3/1p6/4PP2/2N1B3/PPP1BQPP/3R1R1K w - - 0 14 | Qg3 | Does White have any isolated pawns? | No | structure |
2rq1rk1/p3bppp/bpn1p3/1P6/3P4/P1n2N2/1BB2PPP/R2QR1K1 w - - 0 16 | Qd3 | Is the move from g1 to h5 legal? | No | legality |
B5k1/3n4/4p3/1P2b1p1/5n1p/1P3P2/P6P/5KB1 w - - 5 35 | a4 | Does Black have any passed pawns? | No | structure |
2kr1bnr/1pp4p/1q3p2/4pbp1/1pP5/P2P1BP1/1BQ1PP1P/1R3RK1 b - - 0 16 | a2a3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r2qkb1r/ppp1pppp/2np4/3nP3/3P2b1/5N2/PPP1BPPP/RNBQK2R w KQkq - 4 6 | O-O | Is the White king in check? | No | check |
1Q6/8/8/1k1K4/8/8/8/q7 b - - 1 6 | Ka6 | Identify any White knight outposts on the board. | None | outposts |
r2r2k1/p4pbp/bp2q1p1/2p1N3/5P2/2P1BQ2/PP4PP/R3R1K1 b - - 5 20 | f6 | Does White have any passed pawns? | No | structure |
5r2/pB4k1/1q4b1/6Bp/1b1p4/1P3QP1/P4P2/5RK1 w - - 1 30 | Qh1 | Does Black have any isolated pawns? | Yes: a7, d4, h5 | structure |
1qr1kb1r/1b3p1p/pp1p1np1/4pN2/2P1P3/1P4P1/P3QPBP/R1BR2K1 w k - 0 16 | Nh6 | Does Black have any isolated pawns? | No | structure |
r4r1k/p1p1b1pp/2ppq1N1/4p1P1/4P3/PP1PB3/2P2P2/R2QK2R b KQ - 0 18 | h4g6 | Is the Black king in check? | Yes | check |
2r3k1/pp2ppb1/3p1nP1/8/3BP3/2P5/q1P4Q/2K3RR b - - 0 23 | e5 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
r1b3k1/pp1n3p/2pp1rp1/8/1PP1P3/2N3P1/P5P1/3RRBK1 w - - 0 22 | c5 | What piece is on g5? | Empty | occupancy |
3r2k1/1R2ppbp/rnn3p1/p2pP3/3P4/1N2B2P/5PP1/R3N1K1 b - - 8 24 | Nc4 | Is the Black king in check? | No | check |
r4qk1/1rp2pbp/3p1np1/1NnPp1B1/p1P1PP2/P6B/1PQ2P1P/R3R1K1 b - - 0 20 | h6 | Identify any Black knight outposts on the board. | h5 | outposts |
q3k3/1b1pb2r/p5pp/1p2Bp2/2r5/2NQ1P2/PP4PP/2R1R1K1 w Q - 4 6 | Rcd1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
4k3/2r2p2/p5p1/6P1/4n3/P3NN2/KP6/8 b - - 1 40 | Rc5 | Identify any White knight outposts on the board. | None | outposts |
8/8/2kn1PK1/6B1/8/8/8/8 w - - 3 8 | Bf4 | Does White have any isolated pawns? | Yes: f6 | structure |
r1b2rk1/1p3ppp/1np1p3/p7/P1pP4/4P1P1/1P1N1PBP/R1R3K1 w - - 0 18 | f4 | Is the White king in check? | No | check |
r2b1rk1/1p1q1ppp/p2p1n2/2p1p1N1/P1PnP3/1PNQ4/1BP2PPP/R4RK1 w - - 3 14 | Kh1 | Are there any open files in this position? | No | files |
4r1k1/3n1bpp/nqp2p2/pP6/8/B2P1NP1/P3P1BP/1R1Q1K2 b - - 2 24 | cxb5 | Identify any White knight outposts on the board. | a6, c4, c6 | outposts |
r1b1kb1r/4nq1p/n1p1pp2/p2p4/Pp1P1N2/1BP2N2/1P3PPP/R1BQ1RK1 w kq - 4 16 | Re1 | Identify any White knight outposts on the board. | None | outposts |
rnbqkb1r/pp2pppp/2p2n2/3p4/2PP4/4PN2/PP3PPP/RNBQKB1R b KQkq - 0 4 | Bf5 | Identify any White knight outposts on the board. | None | outposts |
5rk1/3p1ppp/2p2q2/p1P2P1b/4NR2/P2r2PP/6BK/4Q3 b - - 17 33 | Qe5 | Does Black have any isolated pawns? | Yes: a5 | structure |
2q3k1/p1P2pbp/2Qnp1p1/8/P2p4/6P1/4PP1P/5RK1 b - - 1 26 | Ne8 | Does White have any isolated pawns? | Yes: a4, c7 | structure |
3BRbk1/5ppp/p2Q4/P4qP1/5P2/1Pp5/7P/1K6 w - - 1 32 | Kc1 | Does White have any isolated pawns? | No | structure |
rnbqkb1r/pp3ppp/3p1n2/1Bp3B1/3NP3/8/PPP2PPP/RN1QK2R b KQkq - 1 6 | f1b5 | Is the White king in check? | No | check |
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