fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rn2k1nr/ppp2ppp/4p3/1N3b2/3P4/5N2/PPPK1PPP/R4B1R b kq - 0 9 | Na6 | Does Black have any passed pawns? | No | structure |
6k1/p4pn1/1p2q1pQ/3p4/6P1/2P2N1P/P4PK1/8 w - - 3 30 | e2e6 | Identify any White knight outposts on the board. | d4 | outposts |
r2qk2r/1p1nbpp1/p1p1pnp1/2Pp4/3P1B2/2N1P2P/PP3PP1/R2QKB1R w KQkq - 0 11 | Bd3 | Is the move from e1 to c4 legal? | No | legality |
2r1kbr1/3b4/p2p4/2qPppp1/1pN5/3Q2B1/PPP2PP1/1K1R3R w - - 2 20 | Nxe5 | What is the material balance in this position? | Equal | material |
8/5rpk/p7/5r2/BPp1p3/2PbB2p/5NP1/R5K1 w - - 0 43 | Ra2 | Identify any Black knight outposts on the board. | None | outposts |
3r1b1r/1k3p2/1pq1pP2/6B1/1pp3Q1/1P4P1/5P1P/R4RK1 b - - 0 24 | c3 | Is the move from c4 to c3 legal? | Yes | legality |
r2q1rk1/ppp2pp1/3b1n1p/5b2/1n1P4/1BN2N1P/PP3PP1/R1BQR1K1 b - - 3 12 | Nd3 | Does Black have any passed pawns? | No | structure |
8/4k3/1p2r1p1/1B1p1p1p/7P/P1P1BKP1/1P3P2/8 w - - 5 45 | Ke2 | What is the material balance in this position? | White is up 2 pawns of material | material |
r2qkb1r/1p1n1pp1/2n1p3/p1ppPb1p/P2P3P/1NP2N2/1P2BPP1/R1BQK2R w KQkq - 2 11 | O-O | Is the move from f3 to h2 legal? | Yes | legality |
3n1r1k/4rppp/pR6/2p5/5R2/2P3P1/P6P/6K1 b - - 1 25 | b2b6 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r5k1/1p3rp1/p1p1N2p/3p4/PP5q/R6P/5bPK/2BQR3 b - - 1 22 | Bxe1 | Is the Black king in check? | No | check |
r2q1rk1/4bppp/pn1p1n2/1p1Pp3/8/2P2Q1P/PPB2PP1/R1B1RNK1 b - - 4 16 | Ne8 | Is the move from g7 to g6 legal? | Yes | legality |
r2qkb1r/pp1nnppp/2p1p3/4Pb2/2BP4/2N3N1/PP3PPP/R1BQK2R b KQkq - 0 8 | Nb6 | Does White have any isolated pawns? | No | structure |
8/1PR3p1/4p1k1/p7/5P1P/4pnK1/Pr6/8 w - - 2 40 | Kxf3 | Is the d-file open, semi-open, or closed? | open | files |
2r1r1k1/1p3p1p/p1nqp1p1/3pP3/8/P1PQ4/1P1NRPPP/4R1K1 b - - 0 20 | Qc7 | Is the move from b7 to d5 legal? | No | legality |
rnb2rk1/pp3pp1/4pq1p/8/2P5/4P3/PPQ2PPP/R3KB1R b KQ - 0 14 | e2e3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/Np6/2kbbp2/8/2Pp1P2/1K2p3/PP2Q3/R1B4q b - - 0 37 | b5a7 | Is the Black king in check? | Yes | check |
2b2r2/kr1nq3/1p1pPpp1/p1p1p2p/P1P1P2P/NRP1BPP1/KQ6/1R6 b - - 0 38 | Qxe6 | Does White have any passed pawns? | Yes: e6 | structure |
8/1R3p1p/5Pk1/8/8/P7/KP4r1/8 b - - 0 44 | h5 | Is the move from g2 to g4 legal? | Yes | legality |
r2qnrk1/1b1nbppp/p2p4/1p2pNP1/4P1Q1/2N4P/PPP3B1/R1B2RK1 w - - 3 16 | Be3 | Is the move from f5 to e3 legal? | Yes | legality |
2kr1bnr/ppp1pppp/8/q2n4/8/P1N2P2/1P1B1PPP/R2QKB1R w KQ - 0 10 | Na4 | Does White have any passed pawns? | No | structure |
2bk1br1/5p1p/r1np4/1N1NpP2/PP2p2q/2P5/6PP/R2Q1RK1 b - - 0 18 | Bb7 | Is the White king in check? | No | check |
2r3k1/7p/p2r2p1/1p3p2/7R/3BB3/PbP1N2P/4K3 w - - 0 31 | a4 | Identify any Black knight outposts on the board. | a4, c4, e4, f5, h5 | outposts |
4r1k1/pp5p/7p/1P1pb3/r7/1N1R1PP1/2R3KP/8 w - - 0 34 | Rxd5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
B4k1r/2R1bp1p/p7/6p1/3Q1B2/5KPb/1P3P1P/4q3 b - - 5 24 | g4# | Does Black have any isolated pawns? | Yes: a6 | structure |
rn1qr1k1/pbp3b1/1p4Q1/3p4/3P4/2N1PN2/PP3PP1/R3K2R b KQ - 0 15 | Nd7 | Are there any open files in this position? | Yes: h | files |
2kr1b1r/pp1b4/1qn1pp1n/3p4/1P1P4/P2B1N2/5PPP/RNBQ1RK1 b - - 2 14 | Bd6 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/1p3pnp/p2q1np1/4p3/4P1P1/2N2Q2/PP1B1P1P/R2R2K1 w - - 1 20 | Bg5 | Is the move from f3 to d3 legal? | Yes | legality |
r1r4q/p3pk1p/1p1nN1p1/3P1pPP/2P1pP2/4P3/Q7/1RR3K1 b - - 0 32 | h6 | What piece is on a7? | Black Pawn | occupancy |
2R3r1/N2qkb2/pr1pp2p/3pp1p1/1P4P1/5Q1P/P4P2/3R2K1 w - - 2 29 | Rdc1 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2Rr1kb/1bp2p1p/1pq1p1pB/p3P3/P1P4Q/5N1P/2P2PP1/3R2K1 b - - 7 25 | Bg7 | Does White have any passed pawns? | No | structure |
r4rk1/1bq3p1/1n1b3p/p1p2p2/P2pP3/3B1N2/1PQ2PPP/2BRR1K1 w - - 2 22 | exf5 | What piece is on f1? | Empty | occupancy |
r1bqkb1r/pp1n1pp1/2p2n1p/3p4/3p1P2/3BP2N/PPP3PP/RNBQK2R w KQkq - 0 9 | e5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2k1r3/1p3RRP/8/p3P3/8/P2p4/1PP5/2K5 w - - 0 42 | cxd3 | What is the material balance in this position? | White is up 7 pawns of material | material |
rn2k1nr/pp2q3/3p1p2/2pP2pp/2P1P3/1QPB1NPb/P2B3P/R3K1R1 b Qkq - 5 15 | Nh6 | Is the move from h8 to h6 legal? | Yes | legality |
1b3rk1/3Q1ppp/P7/8/2n2P2/4P3/5PK1/8 b - - 0 35 | a5a6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
k1r5/1R6/Pp2pp1p/1N6/3PP1P1/4KP2/7P/2r5 b - - 0 42 | e5 | Identify any Black knight outposts on the board. | a5 | outposts |
8/p1k1B3/1p4P1/8/P7/3pPq2/3R1P2/1K6 b - - 0 34 | Qg4 | Identify any White knight outposts on the board. | d4, f4 | outposts |
rnbq1r2/p5pp/1p6/4P3/3Pk1P1/2Q4P/PP3P2/R1B2RK1 w - - 2 22 | Qc4 | Is the move from b2 to d1 legal? | No | legality |
r1q5/pp4pp/2pbrk2/8/3R1pPP/1QP5/PPP2P2/2K1R3 w - - 2 22 | Rxd6 | Is the move from d4 to b4 legal? | Yes | legality |
1rb2k1r/3n1pR1/p2R3p/4P3/P4P2/4B3/1PP4P/2K5 w - - 3 25 | e6 | Identify any White knight outposts on the board. | d6, f6 | outposts |
2rrk3/p1q2pQp/1p2pP2/8/3P4/1B6/P4PPP/3bR1K1 w - - 1 22 | Rxe6+ | What piece is on d3? | Empty | occupancy |
r1rn2k1/B1n1qbbp/3p1p2/1p1PpPp1/1Pp1P3/2P3NP/R1BQ2PN/R5K1 b - - 3 33 | Nb7 | What piece is on h4? | Empty | occupancy |
2k5/p1pp4/1p1b4/8/8/3K1R2/Pr6/8 w - - 0 43 | g2b2 | What is the material balance in this position? | Black is up 6 pawns of material | material |
8/p7/6P1/8/PP1k4/4p1RP/5r2/5K2 w - - 5 47 | Ke1 | Identify any Black knight outposts on the board. | None | outposts |
r4bnr/pppk1ppp/2n5/1B6/8/4NP2/PPP2P1P/R2QK2R b KQ - 0 10 | d5e3 | Is the Black king in check? | Yes | check |
8/8/5k1p/5p1K/2R5/2P5/1r6/8 w - - 0 53 | Kh4 | Is the move from h5 to f1 legal? | No | legality |
r3k2r/2q1bpp1/pn1pbn1p/Np2p2P/4P1P1/P1N1BP2/1PPQ4/R3KB1R b KQkq - 0 14 | Rd8 | Are there any open files in this position? | No | files |
3r2k1/pp3rpp/2pBb3/6p1/P7/2P3P1/4PPBP/3R1RK1 b - - 0 22 | Rfd7 | Is the Black king in check? | No | check |
2r2r2/pb3q2/1p4kp/3p4/2n5/5N1Q/P4PPP/3RR1K1 w - - 0 24 | Re6+ | Is the c-file open, semi-open, or closed? | open | files |
1r2qrk1/1p5p/pN1b4/P1pP1bp1/5p2/2B2Q1P/1P4P1/3R1RK1 w - - 1 25 | Nc4 | Does White have any isolated pawns? | Yes: d5 | structure |
r2qk2r/p3b3/2npbn1p/1pp1N1p1/4Pp2/P1PP1N2/1P1BBPPP/R2QK2R b KQkq - 0 13 | c4e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bq1k1r/pp3pp1/2np1n1p/2b1p1B1/4P3/2N1N3/PPP2PPP/R2QKB1R w KQ - 0 11 | Bxf6 | Is the move from d1 to d2 legal? | Yes | legality |
1rbq1r1k/p1pnbpp1/1p2p3/6p1/3PB1PP/5N2/PPPQ1P2/2KR3R b - - 0 15 | g6 | Identify any Black knight outposts on the board. | None | outposts |
5Q2/5p1p/1pP3p1/3r2k1/8/3pP2P/2q2PP1/3R2K1 w - - 2 45 | Kh2 | Are there any open files in this position? | Yes: a | files |
3r2k1/6p1/3q1nB1/p2n2B1/2pP4/2p5/6QP/5RK1 w - - 0 38 | h4 | What piece is on h7? | Empty | occupancy |
2rq1rk1/p3bppp/1p2p3/3nP1B1/1n1P3P/1Q3NP1/PP3PB1/R3R1K1 b - - 2 22 | Nc2 | Is the move from b4 to a2 legal? | Yes | legality |
r2q1rk1/pp1bppbp/2np1np1/8/2P5/2N3P1/PPNBPPBP/R2Q1RK1 b - - 3 10 | Rc8 | What is the material balance in this position? | Equal | material |
rn3rk1/5p1b/2p3pp/ppq1p2N/6QP/1B1R4/PPP2PP1/5RK1 w q - 0 3 | Rfd1 | What piece is on h4? | White Pawn | occupancy |
r1bq1rk1/pp1nb1pp/2p1p3/3p1p1n/2PP1B2/2NBPN2/PPQ2PPP/3RK2R w K - 0 10 | h4 | Does White have any passed pawns? | No | structure |
2rqbrkn/1p1n1p2/p2bp1pp/3pN3/P2P1N1P/1PPB2P1/1B1Q1P2/R3R1K1 b - - 1 22 | g5 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/3R1p1p/1p3qp1/1P1P2P1/7P/3r4/5P2/4R1K1 w - - 0 35 | gxf6 | Is the a-file open, semi-open, or closed? | open | files |
8/5pk1/3p2p1/2bN4/1P2RPPP/8/6K1/r7 b - - 0 49 | Rd1 | Identify any White knight outposts on the board. | a5 | outposts |
2k5/p5pp/1p1r4/3p2B1/3Pp3/6Pb/PPP1R2P/2K5 b - - 1 26 | Bg4 | What piece is on g5? | White Bishop | occupancy |
rnb2rk1/pp2nppp/4p3/4P3/2B1N3/5N2/PP1q1PPP/R3K2R w KQ - 0 14 | Kxd2 | Are there any open files in this position? | Yes: c, d | files |
2r1k2r/1b2b3/p2ppp2/1p2q2p/4P3/P1NR3Q/1PP1B1PP/1K1R4 b k - 1 21 | Kf7 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
rnbqk2r/ppp1ppbp/3p1np1/8/3PP3/2N2N1P/PPP2PP1/R1BQKB1R b KQkq - 0 5 | c5 | Are there any open files in this position? | No | files |
8/pp6/2p2n1p/4KP2/2k4P/P7/8/8 b - - 1 37 | Nh5 | Identify any Black knight outposts on the board. | d5 | outposts |
r2k1b1r/pppb1ppp/2p5/4Pn2/8/1PN2N2/P1P2PPP/R1B2RK1 b - - 0 10 | h6 | Is the move from g7 to h8 legal? | No | legality |
8/8/1pk1p2p/p1p3p1/P1Pn2P1/3r3P/1R3N2/7K b - - 1 67 | Ra3 | Does Black have any passed pawns? | Yes: e6 | structure |
r7/1p2krp1/2p1p1n1/p2pp2p/P3P2P/2PP2P1/1P1NRPK1/R7 b - - 5 29 | Kd6 | What piece is on b7? | Black Pawn | occupancy |
r1rq2k1/ppnbnpbp/3p2p1/P2Pp3/1Q2P3/2N1B1PP/1P1N1PB1/R4RK1 w - - 1 18 | Qxd6 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/1pp3pp/p2qp3/8/2B1PP2/P3K2P/1Bn5/1R4R1 w - - 0 21 | d4c2 | Is the White king in check? | Yes | check |
r2q1rk1/pb3p2/1p2p1np/1N2b1p1/P1BpP1Q1/3P2B1/1PP3PP/R4R1K b - - 3 17 | a6 | Is the move from e5 to b8 legal? | Yes | legality |
1rb1rbk1/2q2p1p/pn1p1np1/2pP4/2N2B2/2N3PP/1P2PPB1/R2Q1RK1 w - - 0 17 | Na5 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
8/5r2/8/4P3/pB4k1/P7/7p/7K w - - 0 57 | Kxh2 | What piece is on e5? | White Pawn | occupancy |
r2q1rk1/2p1bppp/p1n2n2/P3p3/1p1pP1b1/1B1PBN2/1PPN1PPP/R2QR1K1 w - - 0 13 | Bg5 | Does Black have any isolated pawns? | No | structure |
1r2k2r/2q1npp1/pp2p2p/n1ppP2P/b2P1B2/P1PB1N2/R1P2PP1/1Q3RK1 w k - 6 16 | Re1 | Identify any Black knight outposts on the board. | a5 | outposts |
8/p5qk/P2Q4/3PpK2/4P3/6P1/8/8 b - - 0 66 | Qf8+ | What piece is on a7? | Black Pawn | occupancy |
r2q1r2/pp2b1k1/4p3/3pP2Q/8/2P4P/PP1N1p1K/R3R3 w - - 3 21 | Rg1+ | Is the White king in check? | No | check |
r4rk1/pp2ppbp/q1np2p1/3Q2B1/2P5/P3PN2/5PPP/1R3RK1 b - - 0 16 | d3d5 | Identify any Black knight outposts on the board. | c5 | outposts |
r1bq1rk1/ppp2p2/3b3p/2pnp3/4P2B/3P1N2/PPP2PPP/R2Q1RK1 b - - 1 3 | Ne7 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
rnb1k2r/2q1bppp/p2ppn2/8/1p1NP1P1/1B2BQ2/PPP1NP1P/R3K2R b KQkq - 1 11 | Bb7 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/R4pk1/P3p1b1/3pP1p1/5q2/7P/6PK/8 w - - 1 41 | c4f4 | Is the White king in check? | Yes | check |
1k4rr/pp1b4/1qnbpp2/3p4/1P1P2nP/P1N2NP1/2B2P2/R1BQ1RK1 w - - 1 18 | Ra2 | What piece is on d4? | White Pawn | occupancy |
5Rrk/5R2/3p2P1/2pP2qp/1p6/pP1Q4/P1P5/2K5 w - - 13 50 | g4g5 | Is the White king in check? | Yes | check |
8/4b1k1/6qp/4PQ2/P1B5/8/6PP/7K w - - 4 36 | Qxg6+ | What piece is on h2? | White Pawn | occupancy |
2r5/5pk1/4n1p1/4p2p/p2bP2P/Pp2NQP1/1P1R1PK1/2q2B2 w - - 14 45 | Rd1 | Is the move from f3 to a1 legal? | No | legality |
r1b2rk1/4bpp1/2p1pn2/q6p/p2pPB2/P2B1P1P/3QN1P1/RNR3K1 w - - 2 18 | c5a5 | What is the material balance in this position? | White is up 1 pawn of material | material |
3r2k1/3P2pp/2P1p3/1B2p3/P3P3/5P2/3RK2q/8 w - - 0 36 | g1h2 | Is the White king in check? | Yes | check |
2kr4/1br4p/p5q1/4p1R1/4P3/2PnBpP1/Q2N4/5K1R b - - 1 39 | Rxc3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3k2r/p1q1bppp/1pb1p3/3nN3/3P4/2P2N2/PP3QPP/R4RK1 w kq - 2 17 | Nxf7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
1r2kr2/p4p1Q/3bpP2/2n2PB1/1ppq4/5R2/1P4PP/R2N3K b - - 0 25 | Nb3 | Is the a-file open, semi-open, or closed? | semi-open for White | files |
r2r2k1/pp3bP1/7q/3pQ3/2P2p1P/3B4/PP3P2/2R1K1R1 w - - 2 24 | Qf5 | Is the move from a2 to a2 legal? | No | legality |
r1b1kb1r/p4ppp/2p1p3/P7/2B1P1n1/2N5/1P3PPP/R1BK1R2 b kq - 2 12 | Nxh2 | Does Black have any isolated pawns? | Yes: a7, c6 | structure |
rnbq1rk1/pp2ppbp/3p1np1/8/3NP3/2N1B3/PPP1BPPP/R2QK2R w KQ - 4 8 | g4 | What piece is on g5? | Empty | occupancy |
r4r2/3b1p1k/p2p1q1p/2b1nNp1/p3P3/6RP/B1R2PPK/2BQ4 b - - 5 27 | Bxf5 | Is the move from f6 to g6 legal? | Yes | legality |
r2qrk2/p2n2pB/5p1p/3p1Q2/8/P1R1P3/5PPP/5RK1 w - - 0 23 | Qxd5 | Does Black have any passed pawns? | No | structure |
1nbqk1nr/1ppp1pp1/4pr2/p3P2p/3P3B/2b5/PPP2PPP/R2QKBNR w KQk - 0 8 | b4c3 | Is the White king in check? | Yes | check |
2rrk3/p1q2p2/1p1b3Q/n2RN3/8/P7/5PPP/5RK1 w - - 12 28 | Re1 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
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