fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1r2kb1r/p1pp1ppp/4p3/1p1Pn3/2n1P2P/PPq2NPB/R4P2/2BQ1K1R w k - 5 23 | Ne1 | Identify any Black knight outposts on the board. | None | outposts |
4r1k1/pp2qpp1/1b4p1/4P3/7r/1Q6/PPP2PP1/4RRK1 w - - 2 20 | f8e8 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2q3b/1p1b2k1/1n2p1p1/3pP1N1/pB1P1P2/Pn1B2P1/1P6/R2QK3 w Q - 2 22 | Bxg6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2rr2k1/1p2qppp/p3b3/4N3/P2P4/4Q3/1P1R1PPP/R5K1 b - - 8 24 | Qb4 | Is the move from f7 to h6 legal? | No | legality |
r5k1/5pb1/r3q1p1/2R1p2p/4Q1P1/1PB2P2/2P4P/1K1R4 b - - 0 32 | Qe7 | Identify any Black knight outposts on the board. | None | outposts |
r1br2k1/ppp3b1/2n3pp/6N1/8/8/PP1BBPPP/3RR1K1 w - - 0 19 | Bc4+ | What piece is on h6? | Black Pawn | occupancy |
r2qkb1r/pp1npp1p/2p2p2/7b/8/5NPP/PPPP1PB1/R1BQK2R w KQkq - 1 9 | d3 | What piece is on f7? | Black Pawn | occupancy |
k5r1/1Rr3pp/Pp2pp2/8/3PP3/4KPP1/7P/8 w - - 0 40 | Rxc7 | Identify any Black knight outposts on the board. | a5 | outposts |
8/8/3kPp2/3P2pP/1p1K4/p7/P6P/8 w - - 0 38 | Kc4 | Does Black have any passed pawns? | Yes: f6 | structure |
r1b1k3/ppp4R/2n2q2/5p2/2BPn3/8/P4PPP/3Q1RK1 w - - 4 3 | Re1 | Are there any open files in this position? | Yes: e | files |
r3k3/pp1b4/4p3/2Rp3P/1P1n3p/P4B1R/3K1P2/2B3r1 b q - 4 27 | Nb3+ | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1bqr1k1/ppp2ppp/1bnp1n2/1B2p3/1P2P3/2PP1N2/P2N1PPP/R1BQ1RK1 w - - 1 9 | Nc4 | What piece is on d1? | White Queen | occupancy |
r1bq2k1/pp4pp/5p2/7P/8/6Q1/PP1P1PP1/5RK1 b - - 0 1 | Qxd2 | Are there any open files in this position? | Yes: c, e | files |
8/8/4Nbk1/5P2/1p2K2p/1P2R2P/8/2r5 b - - 0 56 | Kf7 | Does White have any isolated pawns? | Yes: b3, f5, h3 | structure |
1r6/1P6/1R2k2p/8/8/8/6PP/7K b - - 2 44 | b1b6 | Is the White king in check? | No | check |
r4rk1/pp4b1/2p2PQp/8/7R/4q1PP/PP4K1/5R2 b - - 0 32 | Rf7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
6k1/5p1p/P1pb1n2/6p1/3P4/1BPq1PP1/1P1Nb2P/R1B3K1 w - - 1 26 | a7 | Identify any White knight outposts on the board. | c5 | outposts |
rnbqk2r/ppp1bppp/4pn2/3p4/5P2/1P2P3/PBPP2PP/RN1QKBNR w KQkq - 2 5 | Bd3 | What is the material balance in this position? | Equal | material |
r2qkb1r/pp2n1pp/2p1pn2/3P1p2/3P4/2NBPQ2/PP1B1PPP/R4RK1 b kq - 0 10 | cxd5 | Is the move from f5 to e2 legal? | No | legality |
8/8/p2K4/k7/8/8/8/8 w - - 0 10 | Kc5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3bk3/ppp2pp1/2p1r3/4Pn1p/5B1P/1PN3P1/P1P2P2/4R1K1 w - - 0 20 | Re4 | Are there any open files in this position? | Yes: d | files |
5bk1/1R1Q1p1p/4p1p1/p4q2/3p4/6P1/4PP1P/6K1 w - - 6 34 | Qxd4 | What piece is on d7? | White Queen | occupancy |
3R2k1/1p4pp/8/2b5/8/7P/P2p2P1/4qR1K b - - 3 35 | d7d8 | Is the White king in check? | No | check |
8/8/3k1p1p/pK2p1pP/Pp2P1P1/1P3P2/8/8 w - - 3 6 | Kb6 | Is the move from e4 to h6 legal? | No | legality |
2R5/5pk1/1p6/p2q4/2p4p/P6P/1P3PP1/5RK1 w - - 0 49 | a4 | Identify any Black knight outposts on the board. | d3 | outposts |
7r/pbp1Q1k1/1p1p2pr/7P/2P1P3/3K4/Pq2N3/7R b - - 10 32 | e8e7 | Is the Black king in check? | Yes | check |
8/2Q3kp/4rn2/3q2N1/8/2P2N1P/P1r2PP1/R4RK1 b - - 0 26 | f7g5 | Is the Black king in check? | Yes | check |
2kr1b1r/ppp5/6p1/1P6/2P1q1p1/PQ1pP1P1/1B3P1P/R5KR b - - 1 21 | Rh3 | Are there any open files in this position? | No | files |
rnb1r1k1/p2nBpbp/1q1P2p1/1pp1P3/8/2N2N2/PP2B1PP/R2QK2R b KQ - 0 14 | Bb7 | Is the Black king in check? | No | check |
5r2/1bp3kp/1p1b1n2/1P1p2Q1/3P2P1/1N2PR1B/6K1/4R3 b - - 7 40 | f5g5 | Is the White king in check? | No | check |
r3kb2/pb1q4/7r/2pPpPp1/Ppp3p1/6B1/1P2QPPP/RN3RK1 b q - 0 21 | Qxd5 | Is the move from d7 to d8 legal? | Yes | legality |
8/5p2/3n1p1p/p7/1k4P1/2NK3P/8/8 w - - 0 19 | Kc2 | Are there any open files in this position? | Yes: b, c, d, e | files |
2r1k2r/pp3ppp/1q2p3/3pP3/3Q1P2/PP6/6PP/RN1R2K1 b k - 0 17 | Rc1 | Identify any White knight outposts on the board. | None | outposts |
r1b1kbnr/ppp2ppp/2n5/3q4/3P4/5N2/PP3PPP/RNBQKB1R b KQkq - 0 6 | Bg4 | Identify any White knight outposts on the board. | None | outposts |
2rq1rk1/p3b1p1/2Q4p/3p4/2P5/2NRPNB1/PP3PPP/1K5R w - - 1 23 | a8c8 | What is the material balance in this position? | White is up 9 pawns of material | material |
r2qkb1r/1p3ppp/p2p1n2/3Pp3/4P1b1/4BP2/PP3P1P/RN1QRBK1 b kq - 0 12 | Bc8 | What piece is on b3? | Empty | occupancy |
r5k1/pp1b3p/2n2Bp1/2b1pp2/2P5/7P/PPP3P1/R4R1K b - - 0 20 | g5f6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr3r/1p6/p1nBpp2/3nP3/3q1PP1/3B1QKP/8/1R5R w - - 0 37 | Rbc1 | Is the White king in check? | No | check |
rnbqkb1r/pppppppp/8/4P3/8/2n5/PPPP1PPP/R1BQKBNR w KQkq - 0 4 | dxc3 | Does White have any passed pawns? | No | structure |
2R5/8/7p/5p1k/2p3rp/2P4K/1P4P1/8 w - - 6 55 | Rf8 | Is the move from h3 to h2 legal? | Yes | legality |
r3k1nr/pp3pp1/2n1p2p/q2pP3/3P2PP/P3B3/P3QPB1/R4K1R b kq - 4 14 | Nge7 | What piece is on b3? | Empty | occupancy |
r2r2k1/pbq1bpp1/1p2p3/2p1P2p/2P1BP2/6P1/PPN1Q1P1/3RR1K1 b - - 0 22 | g6 | Does Black have any isolated pawns? | No | structure |
r2qk2r/pb1pbp1p/1pn2npB/2p5/Q6N/6P1/PP2PPBP/RN1R2K1 b kq - 1 13 | Bf8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b1k2r/1ppq1ppp/p1np4/3p4/1b1P4/PP2PN2/1B1NBPPP/R2Q1RK1 b kq - 0 11 | a2a3 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/p3kp2/1pp2p1p/5B1P/3P1PP1/1P3K2/P2b4/8 w - - 7 37 | Ke4 | What piece is on f4? | White Pawn | occupancy |
5k2/pp4p1/4pp2/1P6/7p/P3PKP1/5P1b/2B5 b - - 1 32 | Ke7 | Does Black have any passed pawns? | No | structure |
5rk1/1bq1bppp/p7/2p1pP2/N1PB2Q1/1P5R/P5PP/R6K b - - 0 22 | cxd4 | Does White have any isolated pawns? | No | structure |
2kr2r1/pp1bnp2/2n1p1p1/q2pP2p/P1pP4/2P2B1Q/2PBNPPP/R3K2R w KQ - 2 17 | Bg5 | Does White have any isolated pawns? | Yes: a4 | structure |
2k4r/p6p/1pN3p1/3p4/8/1PB4P/PK2qn2/R7 w - - 1 33 | e4e2 | Is the White king in check? | Yes | check |
3r1rk1/1p4q1/p3b3/3pp3/6p1/1P2Q3/P1PN2PP/3R1RK1 w - - 0 26 | Rde1 | Is the Black king in check? | No | check |
rnbqkbnr/ppp2ppp/8/3P4/4p3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 4 | Qe2 | Does Black have any isolated pawns? | No | structure |
4r1k1/1pp4p/3p2r1/3P1RBq/1PP3n1/6b1/3Q3P/3N2RK w - - 2 2 | Rxg3 | Does White have any isolated pawns? | Yes: h2 | structure |
r1b3k1/pp4p1/2nQpr1p/2Pp4/8/P1qBB3/2P2PPP/R3K2R w KQ - 0 19 | Ke2 | What is the material balance in this position? | Equal | material |
r4k2/1nq3b1/4p1p1/1p1p2N1/1P5Q/6P1/P3PPK1/8 w - - 0 34 | Nxe6+ | Are there any open files in this position? | Yes: c, h | files |
r2qkbnr/2pb1ppp/p2p4/1p2p3/3NP3/1B6/PPP2PPP/RNBQ1RK1 b kq - 0 8 | exd4 | What piece is on d6? | Black Pawn | occupancy |
7r/pp1kn3/2b1p2B/3pP3/8/P1p5/2P3qP/R2KQB2 b - - 3 25 | Qg4+ | Is the White king in check? | No | check |
r1r4k/4p2p/p4R2/1p2p1Q1/1qb5/2N5/P3B1PP/2R3K1 b - - 0 23 | Rg8 | What piece is on b3? | Empty | occupancy |
r4r2/1b4pp/p3Bnk1/8/3P1Q2/q4P2/6PP/2R1R1K1 w - - 1 24 | Re5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2k4r/1n1b2p1/p1pp2n1/1p2p3/4P2q/1BN4P/PPPQ1PP1/R2R2K1 b - - 0 21 | Nf4 | Identify any White knight outposts on the board. | g4 | outposts |
1R6/1p1r3p/5P1k/8/5N1K/5bP1/8/8 b - - 0 44 | Rf7 | Are there any open files in this position? | Yes: a, c, d, e | files |
Q7/6p1/5k2/8/1P6/1K1q4/8/8 w - - 3 55 | d4d3 | Is the White king in check? | Yes | check |
1r3rk1/6bp/p1R4p/3p4/3p4/P2N4/5PPP/3R2K1 b - - 5 29 | Rf6 | Is the move from d4 to f7 legal? | No | legality |
8/1pB2pk1/3p2p1/PP1P2Kp/2N1Pp2/5P1P/6n1/8 w - - 2 43 | e5 | What is the material balance in this position? | White is up 3 pawns of material | material |
2b2rk1/r1nq1pbp/3p1np1/2pP4/P4B2/2N2N2/1P2BPPP/R2QR1K1 b - - 0 15 | Bb7 | Does Black have any passed pawns? | No | structure |
2k2r2/p2b4/6n1/3B2pp/2N5/1P1p1PP1/5K1P/4R3 b - - 0 31 | Kc7 | Does Black have any passed pawns? | Yes: d3 | structure |
2kR2r1/1pp5/1pn4p/4pbp1/8/2P2N1P/PP3PP1/RN4K1 b - - 0 16 | d1d8 | Is the Black king in check? | Yes | check |
2r1r1k1/1b3pb1/pqppn1pp/1p2p2n/PP1PP3/1NP2NPP/1B1Q1P2/R3RBK1 b - - 4 23 | Nf6 | What piece is on b5? | Black Pawn | occupancy |
r1b2rk1/5ppp/p1pb4/1p1n4/3PR3/1BP3Pq/PP3P1P/RNBQ2K1 b - - 2 15 | Qd7 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r1b2bnr/pp3kpp/4pp2/1Bn3B1/4N3/5N2/PPP2PPP/2KR3R w - - 4 11 | Rd8 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1b1k1nr/1pqp1ppp/p1n1p3/8/1b1NP3/2NQ2P1/PPP2P1P/R1B1KB1R w KQkq - 3 8 | Nxc6 | What piece is on d4? | White Knight | occupancy |
5rk1/pbr1qppp/1p2n3/3p4/3P1P2/PQNBP3/3R2PP/5RK1 b - - 6 23 | Rfc8 | What is the material balance in this position? | Equal | material |
3R4/8/2Q4p/8/5p2/3k1N1P/6KP/8 b - - 4 55 | b8d8 | Is the Black king in check? | Yes | check |
r4rk1/pp2bppp/8/2p5/5P2/2Q1B3/PP2B2P/R4K1q w - - 1 20 | d5h1 | What is the material balance in this position? | Black is up 4 pawns of material | material |
5rk1/5Rp1/3p4/3B3p/R3P1n1/8/P5PP/2q4K w - - 0 33 | Rf1+ | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/pb3pbp/2p1pnp1/3p4/4P2P/1BN1BP2/PPPQ2P1/2KR3R b - - 0 13 | dxe4 | Are there any open files in this position? | No | files |
r1bqrnk1/pp2bppp/2p2n2/3p2B1/3P4/2NBPN1P/PPQ2PP1/R3K2R w KQ - 1 11 | O-O-O | Are there any open files in this position? | No | files |
r3kb1r/1pqn1pp1/p3p2p/2ppP3/2nP1PPP/2PQBN2/PPN5/R3K1R1 w Qkq - 6 16 | Rb1 | Is the move from f3 to d2 legal? | Yes | legality |
3r4/R7/4ppkp/PpN5/1Pn5/7P/6P1/6K1 w - - 3 35 | Rd7 | Are there any open files in this position? | Yes: c, d | files |
8/3r1k1p/1p3pp1/p7/P7/6P1/1n2PPBP/2R2K2 w - - 0 35 | Bc6 | Is the c-file open, semi-open, or closed? | open | files |
2k5/ppp5/2n2pp1/1r2p3/7r/2BP1P2/P1P4P/1R3RK1 b - - 8 21 | Rxb1 | What piece is on a8? | Empty | occupancy |
3r1rk1/5ppp/p2b4/1p3b2/8/2PP2Pq/PP3PQP/RNB1R1K1 b - - 2 18 | Qh5 | Is the move from d8 to h8 legal? | No | legality |
7r/ppk5/2nb1pp1/2p1p3/4B1Pr/1PP1BP2/P7/3RRK2 b - - 2 25 | Ne7 | Identify any Black knight outposts on the board. | None | outposts |
3r4/ppk1np2/2p3p1/2P1pP2/4P3/1K1BBP2/1P2N3/3R3r w - - 1 22 | Rd2 | Identify any Black knight outposts on the board. | h5 | outposts |
2rn2k1/p3r1p1/1p3PQp/3p1P2/5q2/2P4P/PP2R1P1/4R1K1 b - - 0 27 | e5f6 | Identify any Black knight outposts on the board. | e4 | outposts |
1rr3k1/1bqnbppp/pp1ppn2/8/1PPNP3/P1N1BP2/3QB1PP/2RR2K1 b - - 4 15 | Qd8 | Is the move from g7 to f2 legal? | No | legality |
r1b1k2r/pp3ppp/2n1p3/q3Pn2/2BP4/P3BN2/3Q1PPP/R3K2R b KQkq - 4 13 | O-O | Is the move from g7 to g5 legal? | Yes | legality |
r1b3k1/1p4pp/p2p3r/2PPnpq1/1P3R2/Q1N3P1/P3B2P/2R3K1 b - - 0 21 | Bd7 | Is the move from c8 to b4 legal? | No | legality |
r4rk1/pppqbppp/1nn5/4p3/N7/3PBBPP/PP2PP2/2RQ1RK1 b - - 0 13 | Qxh3 | What is the material balance in this position? | Equal | material |
5rk1/1p4b1/p2p4/P2Pp3/4Prb1/2N2Pqp/1PQ2RP1/2R2BK1 b - - 5 32 | Bxf3 | Are there any open files in this position? | Yes: c | files |
2k3r1/p1pp1R2/1p1b4/8/8/3K4/PP4r1/5R2 b - - 2 40 | f5f7 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r2q1rNk/ppp2p1p/3pb3/2b1p3/2B1P2N/3P4/PPP2PPP/R2Q1RK1 b - - 0 12 | Qxh4 | Is the move from e5 to b1 legal? | No | legality |
3r4/8/B7/5k2/6p1/6P1/5K2/8 b - - 21 13 | Ke4 | Is the d-file open, semi-open, or closed? | open | files |
8/pp3QPb/2k5/3p2q1/P1pP4/2P5/2P1KP2/8 w - - 3 42 | Qe6+ | Is the move from f2 to a3 legal? | No | legality |
2r3k1/5pp1/p1pBb1rp/2P5/nP1Np3/P7/3R1PPP/4R1K1 b - - 2 29 | Nc3 | What is the material balance in this position? | Equal | material |
8/8/8/7P/8/7K/8/5kr1 w - - 0 6 | Kh4 | Identify any White knight outposts on the board. | g6 | outposts |
2r1k2Q/4p2p/p1np4/5N2/6n1/P2P1N1P/1P4q1/R2K3R b - - 0 24 | g7h8 | Is the Black king in check? | Yes | check |
8/8/4K2k/8/5pRp/6n1/6P1/8 w - - 0 74 | Rxh4+ | Are there any open files in this position? | Yes: a, b, c, d, e | files |
Q2nk1nr/p4ppp/3qp3/3pN3/3P4/2P5/PP2bPPP/RN2K2R b KQk - 0 12 | Qc7 | Does Black have any isolated pawns? | Yes: a7 | structure |
2q2rk1/pQ3ppp/2r1p3/3p4/3P1Bb1/4P3/PP3PPP/R3K2R w KQ - 1 16 | Qxc8 | What piece is on c2? | Empty | occupancy |
r3kbnr/ppP2p1p/6p1/4p3/2B1P3/5Q1P/PPP2KP1/RN5q w kq - 0 15 | Bb5+ | Identify any White knight outposts on the board. | None | outposts |
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