fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
5rk1/1p3p2/2b3pq/5n2/1R1p4/2BPP1P1/r4PB1/3QR1K1 w - - 0 26 | Bxd4 | Are there any open files in this position? | Yes: a, c, h | files |
5rk1/6p1/1BR1p2p/P1P3q1/4p3/5P2/2Q3PP/6K1 b - - 0 32 | exf3 | What piece is on b6? | White Bishop | occupancy |
7Q/1pk5/p1p1q3/4Pn2/2P3pP/PP1N4/5P2/6K1 b - - 0 33 | g3 | Identify any White knight outposts on the board. | f6, g5 | outposts |
r6r/ppp3kp/6p1/2bp3q/Q2n4/1P1B2Pb/PBPP1P1P/RN3RK1 b - - 2 14 | Qf3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r7/pp1b1k1r/1bn2P2/3pp3/1B1p4/PN3NP1/1PP2P2/R3R1K1 b - - 0 20 | Kxf6 | Is the move from d4 to b8 legal? | No | legality |
r3k2B/2pp1p1p/p2b4/1p6/8/3b4/PP3PPP/RN2R1K1 b q - 3 15 | f1e1 | Is the Black king in check? | Yes | check |
3rr3/2R2p1p/2k5/P1p1B3/2b5/6P1/5P1P/4R1K1 b - - 2 27 | a7c7 | Is the Black king in check? | Yes | check |
8/kp6/p7/2b4Q/P5p1/1P4P1/2r2r1P/3R3K w - - 6 38 | b4c5 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/1R3pk1/4r1p1/4p3/4P3/5PK1/8/8 w - - 0 61 | Kg4 | Does Black have any passed pawns? | No | structure |
6rk/pp6/3p1n2/3PpRbp/4P3/1P4N1/1P4P1/4N1K1 b - - 5 31 | h4 | Does Black have any isolated pawns? | Yes: h5 | structure |
r5k1/3bbrpp/1q4n1/p2pPp2/1ppP1P2/4BNR1/PPB3PP/R2Q2K1 w - - 4 24 | a4 | Does Black have any passed pawns? | No | structure |
r3kb1r/p4ppp/1pn1p3/8/8/1P1P4/P1PK1P1P/6q1 w kq - 0 16 | h1g1 | What is the material balance in this position? | Black is up 25 pawns of material | material |
2r5/p1qn1k1p/2p1pppP/r7/2QPN3/P3P3/5PP1/1RR3K1 w - - 8 36 | Rb7 | Does White have any isolated pawns? | Yes: a3 | structure |
r2q1rk1/ppb3pp/2p1pn2/2P2p1b/2NPp3/1P4P1/PBQ1PPBP/R3R1K1 b - - 4 15 | Nd5 | What piece is on c8? | Empty | occupancy |
6k1/5p2/p3b1pp/2b3q1/3QP3/1B3R1P/1P3PP1/6K1 w - - 1 37 | Qc3 | Identify any White knight outposts on the board. | d5 | outposts |
2r4k/5pR1/1p2pQ1P/1p2P3/1P6/4nN2/5KP1/5q2 w - - 20 59 | Kg3 | Identify any White knight outposts on the board. | None | outposts |
r1b1r1k1/pp3pbp/n1p2np1/4p1B1/2P1P3/2N5/PP2BPPP/2KRN2R w - - 0 12 | Nc2 | What is the material balance in this position? | Equal | material |
8/5k2/6p1/7p/3Rp2P/5KP1/1r3P2/8 w - - 0 44 | Rxe4 | Is the White king in check? | Yes | check |
8/8/1kp5/3r4/8/2KN2r1/1P6/3R4 b - - 59 76 | Kb5 | What piece is on d5? | Black Rook | occupancy |
1r2kb1r/p2n1pp1/4p1p1/8/3Np1P1/8/PPP2PKP/R1B2R2 b k - 1 19 | Bc5 | What piece is on f8? | Black Bishop | occupancy |
4R1k1/pb3rp1/1p5p/3P4/2P2P2/6P1/PP5P/5RK1 b - - 0 34 | e1e8 | Is the Black king in check? | Yes | check |
4R2k/p2r4/1ppq2pB/8/2Q5/6PP/PPP2P1K/8 b - - 4 34 | e7e8 | Is the Black king in check? | Yes | check |
r4r2/1bp1bkpp/p3p1n1/4P3/3NNP2/6PP/PP2B3/R1BR2K1 b - - 0 20 | c3e4 | What is the material balance in this position? | White is up 4 pawns of material | material |
3r1r1k/pQ4pp/8/4B1q1/4R3/1P3P2/P5PP/R1b4K w - - 2 24 | Qxg7+ | What piece is on d8? | Black Rook | occupancy |
r6r/1kpnbp2/ppp1q1p1/4p2p/PPN1P3/3P4/2PBQPPP/RR4K1 w - - 0 19 | Re1 | What piece is on f2? | White Pawn | occupancy |
5b1r/5pp1/7p/3q4/6Q1/P1RN4/1P4PP/4k1K1 b - - 2 35 | e5d3 | Is the White king in check? | No | check |
3n4/1P6/P3KPk1/8/4N1P1/8/8/8 w - - 1 58 | Kd5 | Is the White king in check? | Yes | check |
4r1k1/3n2pp/1q3p2/ppn5/3B4/1b1P1NP1/4P1BP/2R1QK2 b - - 5 28 | Be6 | Does Black have any isolated pawns? | No | structure |
1r5r/2qknpp1/p1n1p2p/1p1pP2P/b1pP1B2/P1P2N2/1RP1BPP1/2Q1R1K1 w - - 0 20 | Nh2 | Identify any White knight outposts on the board. | None | outposts |
4q3/5k2/3p4/p1p2p1p/PpP2PbP/1P1Qb1P1/7K/2B5 w - - 0 38 | Bxe3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/pB3p2/1p6/2p1k1p1/P5p1/8/7P/7K b - - 0 38 | c4 | Is the move from g5 to e4 legal? | No | legality |
6k1/5pp1/3n3p/r7/3B1N2/7P/5PPK/8 w - - 5 41 | c4d6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3k1n1/ppPb1p2/8/4Pqp1/B2Q1p1r/B1P3p1/P1P3P1/R3KR2 w Qq - 3 20 | O-O-O | Is the move from a4 to c6 legal? | Yes | legality |
8/ppp4p/1bp1k3/2B3r1/1P2pp2/2P5/P2K1p1P/R4R2 b - - 2 27 | Rxc5 | What is the material balance in this position? | White is up 1 pawn of material | material |
rr4k1/4ppbp/p2p1np1/2pP4/4P3/P1NPQ2P/2qB1PP1/R4RK1 b - - 2 19 | Rb2 | What piece is on h5? | Empty | occupancy |
4r1k1/1n3bp1/3p1n2/1p1P3p/2p2P1P/4N1P1/3B4/3R1BK1 b - - 1 52 | Nc5 | Is the move from h5 to c7 legal? | No | legality |
3rn1k1/bppr1pp1/2n4p/p3p3/P3P3/2P1NPNP/1P2K1P1/R1B1R3 w - - 3 24 | Ngf5 | What piece is on d3? | Empty | occupancy |
8/5p2/2KRk1p1/4P2p/5P2/1p4P1/8/1r6 b - - 1 50 | d3d6 | Is the Black king in check? | Yes | check |
r4rk1/pb1q2pp/1ppb4/3p1p1n/3P1P2/2N3P1/PP2PBBP/R2QR1K1 w - - 0 16 | e4 | Are there any open files in this position? | No | files |
4r3/3b4/5p1p/1pk2Pp1/1RpN2P1/2P4P/5K2/8 b - - 2 38 | Re4 | Are there any open files in this position? | Yes: a, d, e | files |
2r2r1k/1p3qbp/pBnpb1p1/3Npp1n/2P1P3/3B1P2/PP1QN1PP/1K1RR3 w - - 10 17 | Bc2 | What is the material balance in this position? | Equal | material |
6k1/2pr2pp/R4r2/1n1q4/5P2/4B2P/1PQ3P1/R5K1 b - - 0 25 | Nd4 | Identify any White knight outposts on the board. | e5 | outposts |
r1bq1rk1/p3bp2/4p2p/3p4/5n2/1PN5/3NKPPP/R6R w - - 2 20 | d3f4 | Is the White king in check? | Yes | check |
2r2n1r/2q1b1kp/2pp4/pp2p3/4P1n1/3PBN2/PPPQ1PPP/R3K2R w KQ - 2 15 | f6g4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5rk1/pb1p2pp/4p3/2bnP3/2N5/4B1P1/PP3R1P/R4BK1 b - - 2 21 | Nxe3 | What piece is on a7? | Black Pawn | occupancy |
3r2r1/1pp2k2/p2pbb2/P3p1pp/1RN1Pp2/2PP1P1P/1P2R1PN/6K1 b - - 4 31 | Bc8 | What is the material balance in this position? | Equal | material |
r1b1k1nr/pp2ppbp/2np2p1/q1p5/3PP3/2N1BN2/PPPQ1PPP/R3KB1R w KQkq - 2 7 | dxc5 | Is the White king in check? | No | check |
r1bqk2r/pp3ppp/1n6/1Q1PP3/8/2P2N2/P5PP/R1B1K2R b KQkq - 2 15 | Qd7 | Identify any Black knight outposts on the board. | None | outposts |
B1r3k1/5pp1/4p2p/1p2P2q/3Q2b1/2P5/3R1P1P/1R4K1 b - - 0 28 | Qg6 | Are there any open files in this position? | Yes: a, d | files |
r3r1k1/1bp1n1pp/pppB1p2/5P2/4P3/1NN5/PPP3PP/R4RK1 b - - 0 14 | cxd6 | Is the d-file open, semi-open, or closed? | open | files |
8/8/8/8/8/4k3/5p2/5K2 b - - 1 12 | Kf3 | Does White have any isolated pawns? | No | structure |
8/8/8/K7/5n2/8/3N2p1/5k2 b - - 3 64 | f3d2 | Is the White king in check? | No | check |
r1bqk1nr/pppp1ppp/2n5/2b5/3pP3/2P2N2/PP3PPP/RNBQKB1R w KQkq - 0 5 | e5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bq2k1/p1p2rbp/3P1nn1/pN1Pp1p1/4Pp2/3N1P2/PP2B1PP/2RQ1RK1 w - - 0 18 | dxc7 | What piece is on e3? | Empty | occupancy |
8/5N2/2r1p2p/p6P/Bp1K1k2/8/P7/8 b - - 2 48 | e5+ | Is the move from f4 to b5 legal? | No | legality |
r3kb1r/1bq2p1p/p3nnpN/1p2p3/4P1P1/P1N5/1PP1Q1BP/R1B2RK1 b kq - 3 16 | Nf4 | Is the Black king in check? | No | check |
r1bqr1k1/pp3pp1/2p2n1p/2Qp4/4P3/1PN2P2/1PP3PP/2KR1B1R b - - 1 15 | Qb6 | What is the material balance in this position? | Equal | material |
r3q2k/pp1n3p/8/2pPppQ1/2B1N3/2P4P/PP3P2/R4RK1 w - - 0 21 | f7f5 | What is the material balance in this position? | White is up 8 pawns of material | material |
7k/7p/3p2r1/p1nPpNp1/4P3/P1P5/6P1/5RK1 w - - 0 43 | Ne7 | What piece is on h6? | Empty | occupancy |
r2qkb2/1b1n2pr/2p1Qn1p/pN2p3/Pp2PP1N/4B3/1PP4P/2KR2R1 b - - 5 19 | Qe7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1b1r1k1/1pp2p1p/1bnp1p2/pP2p3/2P5/P3PN2/1B1P1PPP/R3KB1R b KQ - 0 13 | Ne7 | Identify any White knight outposts on the board. | None | outposts |
r1bq1rk1/p1p1bppp/2pPn3/8/8/2N1BN2/PPP1QPPP/3RR1K1 b - - 0 13 | cxd6 | Is the move from h7 to h5 legal? | Yes | legality |
r2qr1k1/1pp2pp1/p1npbn1p/4p3/PPB1P3/2PPPN2/3N2PP/R2Q1RK1 w - - 1 12 | b5 | Are there any open files in this position? | No | files |
2b3r1/3k1q2/r3pB2/pQ1pP1p1/2p5/b1P3N1/PR3PPP/1R4K1 b - - 13 35 | Rc6 | Does White have any isolated pawns? | Yes: a2, c3 | structure |
r3k1r1/1R6/b3pB2/Q1bpP1pq/2p5/2P5/P4PPP/1R4K1 w - - 3 34 | Qxc5 | Is the move from f6 to g7 legal? | Yes | legality |
2r5/8/8/7p/5K1k/7p/2p3P1/8 w - - 0 3 | g3# | Is the move from f4 to h3 legal? | No | legality |
rnb1kbnr/ppq1pppp/8/8/8/1B2pN2/PP3PPP/RNBQK2R w KQkq - 0 7 | Bxe3 | What piece is on f8? | Black Bishop | occupancy |
8/5rp1/4p3/4P2Q/1P2kr2/2P5/1K6/8 w - - 5 52 | Kb3 | Is the move from h5 to h2 legal? | Yes | legality |
3rr1k1/1ppqbppp/p1p5/2n2P2/5B2/2N1Q3/PPP2PPP/R3R1K1 w - - 1 16 | g4 | Does Black have any passed pawns? | No | structure |
R7/P3kp2/1n6/2p4p/1r6/1K1P4/2P5/8 w - - 3 37 | a4b4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r2q1rk1/pb1n1ppp/1ppb4/3pN2n/3P4/2N1B1P1/PP2PPBP/R2QR1K1 w - - 2 13 | f4 | What piece is on b6? | Black Pawn | occupancy |
1rbq1rk1/b1p2ppp/p1np1n2/Pp6/3PP3/1B2BN1P/1P3PP1/RN1Q1RK1 b - - 0 13 | Nxe4 | Is the move from c7 to d8 legal? | No | legality |
6k1/p1b5/2r5/5PK1/1pN2P2/1P1R2B1/8/6r1 b - - 15 68 | Bb6 | Is the Black king in check? | No | check |
1r2r1k1/1P3ppp/3b4/p1p2Pq1/Q3pR2/P3P1B1/b3B2P/3R2K1 w - - 0 35 | Rxd6 | Is the move from g3 to c8 legal? | No | legality |
rn1q3r/p2pk2p/bp1p3B/5p1B/4n3/3PQ3/PPP2PPP/RN2K2R w KQ - 8 13 | Bg5+ | Does Black have any isolated pawns? | Yes: d6, d7, f5, h7 | structure |
r3kb1r/1pqn1pp1/p3p2p/2ppP3/2nP1PPP/2PQBN2/PPN5/R3K1R1 w Qkq - 6 16 | Rb1 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/5ppp/1P1bq3/3bp3/1PR5/p1P2P2/5QPP/R4BK1 w - - 2 31 | Rc7 | Identify any White knight outposts on the board. | a5, b4, c5 | outposts |
1nkr4/2r4p/1pq2p2/4pP2/1P1pP3/R2Q4/3N2PP/R5K1 w - - 5 27 | Ra8 | Identify any White knight outposts on the board. | None | outposts |
8/6pp/8/6Pk/4b2P/PP2p3/2r5/2K1RQ2 w - - 8 47 | d2c2 | Is the White king in check? | Yes | check |
6r1/2bk4/2p1p3/pp1p2p1/4Pn2/P1P2PNr/1P5N/4RR1K w - - 0 29 | Rg1 | Is the Black king in check? | No | check |
8/6k1/4p1p1/3pPnPp/r4K1P/P1p4R/1B6/8 w - - 0 49 | c4c3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2k1r1r1/ppqbnp1Q/2n1p3/3pP1B1/7P/P1p2N2/2P2PP1/1R1K1B1R w - - 5 15 | Bxe7 | What piece is on f6? | Empty | occupancy |
4rrk1/p3bppp/1np2n2/1pq2P2/2p1PB2/P1N4P/1P2Q1B1/3R1R1K w - - 4 20 | Bh2 | Is the move from d1 to b1 legal? | Yes | legality |
rn2kb1r/pp3ppp/8/2P5/1P4b1/2P2p2/P2N1P2/R1BK1B1R w kq - 0 13 | Bh3 | Does Black have any passed pawns? | Yes: h7 | structure |
r3r1k1/1p1q1ppp/p2P1b2/2pQ4/2P5/5B2/PP4PP/3R1RK1 b - - 1 22 | Bd4+ | Does White have any passed pawns? | Yes: d6 | structure |
1k6/7R/2p5/8/r7/5P2/P3KP1P/8 w - - 2 29 | h4 | Is the move from h7 to f7 legal? | Yes | legality |
5k2/p5p1/1p2r2p/2p1K3/4P3/8/8/8 w - - 0 56 | e7e6 | Is the White king in check? | Yes | check |
r2qk2b/1p1b1p2/1n2p1p1/3pP1N1/pB1P1P2/Pn1B1NP1/1P6/R2QK3 w Qq - 4 20 | Nxf7 | Is the Black king in check? | No | check |
2krr3/1pp2p1p/p7/1q2P3/3pR1p1/1P6/PB1N1PPP/3Q1K2 w - - 1 22 | Nc4 | What piece is on g8? | Empty | occupancy |
4k3/p6R/4p3/2b1r2p/1BP5/P2K4/7P/8 b - - 1 38 | a5 | Are there any open files in this position? | Yes: b, d, f, g | files |
rqbb1nr1/6kp/p2p4/3P1BPQ/1p3P2/8/PPP4P/2K1R2R w - - 1 22 | Be6 | What piece is on h3? | Empty | occupancy |
r1q1b1k1/ppp1n1r1/n2p3p/2bPp1N1/2P1P3/4N1Q1/PP2BPP1/R1B2RK1 w - - 0 18 | h7h6 | What is the material balance in this position? | White is up 1 pawn of material | material |
4k3/3R1ppp/8/2N5/2rp4/8/1P3PPP/6K1 w - - 1 31 | Nd3 | Is the move from d7 to d6 legal? | Yes | legality |
rn1q1rk1/pbp2pp1/1p3b1p/3p4/3P4/2N1PN2/PP3PPP/2RQKB1R w K - 0 11 | b4 | Is the move from g2 to g4 legal? | Yes | legality |
3r4/5p2/p4kp1/1p1p3p/5K1P/P1P3P1/1P1R1P2/8 b - - 2 42 | Re8 | What piece is on b5? | Black Pawn | occupancy |
r7/pp2n1k1/2ppPpp1/6Q1/2B5/7R/PP3P1P/6K1 b - - 0 26 | fxg5 | Is the Black king in check? | No | check |
8/8/8/3p1r1p/3B1P1P/4PkrK/2R5/8 w - - 25 57 | g4g3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5r2/1r1k1p1p/1p2p1p1/p3P3/P1RP2P1/1P2K2P/8/5R2 w - - 1 37 | Ke4 | Identify any Black knight outposts on the board. | None | outposts |
8/8/5k1P/1R6/5p2/7K/2r3P1/8 b - - 0 50 | Kg6 | What piece is on b5? | White Rook | occupancy |
4Q3/k2r4/1p5p/p5pP/3r4/1Pqp2P1/P2R1P2/4R1K1 w - - 1 42 | Re7 | What is the material balance in this position? | Equal | material |
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