fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
6k1/1pp2rpp/6r1/p7/2PQPp1q/PP3B2/5Pb1/R1B3K1 w - - 0 26 | Bxg2 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2q3k1/pb1r1p1p/1p1P2p1/4R3/3N4/2P3Q1/PP4PP/6K1 w - - 5 32 | Nf5 | Does White have any passed pawns? | Yes: d6 | structure |
3r2k1/5p2/5P1p/PB4p1/2pqr3/Q2n2RP/1P4P1/5R1K w - - 1 48 | Qc3 | Is the move from a3 to e7 legal? | Yes | legality |
8/5Q1k/7p/p3P3/Pp6/1P5P/6P1/2n4K b - - 2 46 | f8f7 | Is the Black king in check? | Yes | check |
r1b2rk1/ppp1qppp/2np1n2/2b1pP2/2B1P1P1/2NP4/PPP4P/R1BQK1NR w KQ - 1 8 | Nf3 | What piece is on a7? | Black Pawn | occupancy |
r4Bk1/pp1b3p/6p1/2pP1p2/2P5/1P4N1/P5PP/b3R1K1 w - - 0 27 | Bxc5 | Identify any Black knight outposts on the board. | e4 | outposts |
8/1p4p1/pP2p3/5k1K/P6B/8/8/8 b - - 7 45 | e5 | Is the move from a6 to a5 legal? | Yes | legality |
7r/2k3p1/2pp1p2/1p4p1/1Pq1P1P1/P3R2P/5PK1/3Q4 w - - 1 39 | a4 | Is the move from e3 to d3 legal? | Yes | legality |
2k5/pp6/2p1p3/6p1/1P1P1b2/2P1B1p1/P4PRr/5K2 b - - 3 32 | Rh1+ | Identify any Black knight outposts on the board. | f4, f5, h4 | outposts |
rn2R1k1/1p3rp1/6Np/p7/P7/3P4/1qP2PPP/3Q2K1 b - - 1 20 | e6e8 | What is the material balance in this position? | Black is up 3 pawns of material | material |
5kr1/5q2/p2pQb1r/1p1Pp1p1/2p1P3/P5NP/1PP2PP1/3R1RK1 w - - 10 30 | a7f7 | What is the material balance in this position? | White is up 2 pawns of material | material |
4R3/pp3p2/3P1kp1/3P4/1K6/P7/3r4/8 w - - 7 17 | d7 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r2qk1r1/ppp2pPp/1bn1b3/8/2pP4/5N2/P4PPP/RNBQR1K1 w q - 1 13 | d5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r4r1k/pbn2p1p/np3p2/8/3N1B2/6PB/PP3P1P/R3R1K1 b - - 0 20 | Rfe8 | What piece is on b7? | Black Bishop | occupancy |
1K6/6kP/6P1/1p6/8/8/n7/8 w - - 1 3 | Kc7 | Is the White king in check? | No | check |
r3r1k1/2p1np1p/p3n1p1/1p1pP3/P6q/2P2Q2/1PBB1PPP/R3R1K1 b - - 0 22 | Qc4 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1b4r/2qn3p/1p2p1pk/p3P3/2pP2Q1/2P5/PPB3PP/5RK1 w - - 0 19 | Rf7 | Is the White king in check? | No | check |
3bqn1k/5p1p/2p2pr1/1p3N1R/rP1PpP1R/2Q5/5KPP/1B6 w - - 0 40 | Qh3 | What piece is on g4? | Empty | occupancy |
2rnr1k1/1b3p1p/pp2pbpB/3P3q/8/PB2QN2/1P3PPP/3RR1K1 w - - 1 2 | d6 | What is the material balance in this position? | Equal | material |
8/8/p1kn2p1/2p1p1bp/2P1P3/2K4P/P4BP1/4N3 w - - 21 63 | Kd3 | Is the move from e1 to f3 legal? | Yes | legality |
8/2p5/3b4/1p1P4/1p3B2/5Kp1/Bk4N1/8 w - - 1 70 | Bc1+ | Is the move from g2 to e1 legal? | Yes | legality |
r1b3k1/1pP2pp1/1q3n2/pN2p3/1np1P3/Q3P2P/6P1/R3NK1R w - - 0 24 | Qxb4 | Identify any Black knight outposts on the board. | b3, b4 | outposts |
2b1r1k1/3q1pnp/p2p2p1/2pP2B1/1pP3P1/1PbB1N1P/P4P2/1RQ3K1 w - - 3 26 | Bd2 | Identify any White knight outposts on the board. | None | outposts |
2br2k1/6p1/2p1pp1p/4N3/P6P/3B1Q2/qp3PP1/2KR4 w - - 0 32 | b3b2 | Is the White king in check? | Yes | check |
2b5/2Pk4/p3P3/1p6/1P3n2/P3N3/3RPP2/4K3 b - - 0 37 | d5e6 | Is the Black king in check? | Yes | check |
1r3b1r/1p2pp1p/pNkpb1p1/7n/4P3/2R1BP2/PPP1N1PP/2K4R b - - 5 18 | d3c3 | Is the Black king in check? | Yes | check |
R5k1/1b3pp1/2q4p/1p1N1P2/2PB4/1P1P1Q2/1P4PP/6K1 b - - 0 25 | a1a8 | Is the Black king in check? | Yes | check |
r1b2rk1/ppp3pp/2nppb2/7q/2PPRB2/5NP1/PP3PBP/R2Q2K1 w - - 3 13 | Ng5 | Are there any open files in this position? | No | files |
r5k1/pp1b2pp/1q1bp3/3p2P1/3n2B1/PP5P/3N1PK1/R2Q3R b - - 1 20 | Rf8 | Identify any Black knight outposts on the board. | d5 | outposts |
r1b1Qbkr/1p1n2p1/p7/3n2p1/5P2/8/P1P3PP/4RR1K b - - 0 24 | N7f6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3k2r/ppp3pp/6b1/4Pp2/1B1q1P2/Pn4N1/1P4PP/R2Q1RK1 w kq - 4 17 | d5d4 | Is the Black king in check? | No | check |
rnbq2k1/pp4pp/2p2n2/2b4Q/3pP3/8/PPP3PP/RNB2RK1 w - - 2 12 | Qxc5 | What piece is on f7? | Empty | occupancy |
4nrk1/1p1q1pbp/p3p1p1/B2Nr3/2P5/1P1N4/P5PP/R2Q1RK1 b - - 1 23 | Rh5 | What is the material balance in this position? | White is up 2 pawns of material | material |
2r1k3/1pp1p2r/p5pb/3P3p/1PP1Bp2/6BP/P1K2P1P/3R4 b - - 1 25 | fxg3 | Does White have any isolated pawns? | Yes: f2, h2, h3 | structure |
r2q1bk1/1b4p1/p2p1n1p/1ppPrp2/Pn2P3/5R1P/1P1N1PPN/1BBQR1K1 w - - 4 22 | b3 | What piece is on d7? | Empty | occupancy |
rnbqkbnr/pp2pp2/2p3p1/3pP2p/3P1P2/2N2N2/PPP3PP/R1BQKB1R b KQkq - 1 6 | Nh6 | Does White have any isolated pawns? | No | structure |
r3k2r/1pp1qpp1/2bp1n1p/p7/2PQ2P1/PP5P/1B2PP2/R3KBR1 w Qkq - 3 15 | Rg3 | What piece is on b6? | Empty | occupancy |
8/kp6/6p1/p1NpP3/b1pP1P2/P1Pr2Q1/2P1K3/1qB1R3 b - - 0 43 | Qxc2+ | Does White have any passed pawns? | Yes: e5 | structure |
r1bqkb1r/5p2/p1ppp2p/3nP1P1/7B/2N5/PPP3PP/R2QKB1R w KQkq - 1 12 | Ne4 | Is the move from d1 to e2 legal? | Yes | legality |
2b1rrk1/2pR1p2/1pq1pQp1/p3P1N1/P1PR3P/6K1/2P2P2/8 b - - 0 34 | Bxd7 | What is the material balance in this position? | Equal | material |
3n1k2/1p3p1p/p5p1/PP2b3/2P1B2P/8/3B1PP1/6K1 b - - 0 32 | Ke8 | Is the move from d8 to h3 legal? | No | legality |
3r1r1k/pb1q1p2/5b1p/8/2BNn1P1/2PQB3/PP3PP1/3R1RK1 b - - 0 24 | h3g4 | What is the material balance in this position? | White is up 3 pawns of material | material |
r4rk1/5ppp/3ppn1q/p7/3P4/P3PN1P/1P1Q1PP1/R1B2RK1 w - - 1 20 | g4f6 | What is the material balance in this position? | White is up 4 pawns of material | material |
4k2r/2b2pp1/b2p4/q3pPP1/1p1nP3/1P2B3/2PQ2B1/3NR1K1 w k - 1 28 | Bf2 | Is the move from g1 to h7 legal? | No | legality |
r1b2r2/4bk1p/p1p1p2Q/4pR2/4N3/6R1/4q1PP/6K1 b - - 0 22 | exf5 | Does Black have any passed pawns? | Yes: a6, c6, e5, e6 | structure |
q4rk1/1b1nbppp/2p1p3/4P3/1p1P4/3B1N2/1P3PPP/2BQ1RK1 w - - 1 17 | Bg5 | Is the Black king in check? | No | check |
r3qrk1/pp5p/n1b1p1p1/2p2p2/1P6/2Q2NP1/P3PPBP/1R3RK1 w - - 0 17 | b5 | Is the move from c3 to e1 legal? | Yes | legality |
rnb2r1k/pp2q1pp/2p1p3/3pN3/2PP1P2/1QN2pP1/PP5P/2R2RK1 w - - 0 16 | Rce1 | Does Black have any isolated pawns? | No | structure |
8/p1pk3R/1p6/3Bn3/2Pr4/1P6/P5PP/6K1 b - - 2 34 | h6h7 | Is the White king in check? | No | check |
r1bqkb1r/3npppp/p1p2n2/1pPp4/3P4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 1 7 | Bd2 | Is the White king in check? | No | check |
r3r1k1/3nb2p/4Rp2/p2p4/Pp1P1B2/5N2/1P3PPP/R5K1 b - - 0 26 | b3 | Does Black have any passed pawns? | No | structure |
r1b1k2r/pp4pp/4pp2/8/4n3/4KN2/PPPR1PPP/R7 w kq - 0 15 | Kxe4 | Is the move from b2 to b3 legal? | Yes | legality |
rnbqk1nr/pppp1ppp/4p3/2b5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3 | Qe2 | What is the material balance in this position? | Equal | material |
3r4/1p2k2p/2p2pp1/b3p3/p1P1P3/P2n1NP1/1PK1RPBP/8 b - - 0 25 | Nc5 | Is the move from d3 to e1 legal? | Yes | legality |
6k1/pb5p/8/4P3/Pn6/2p5/1R4PP/7K w - - 0 35 | Rxb4 | Identify any White knight outposts on the board. | d6, f6 | outposts |
r2rb1k1/1p1nq2p/p1p1p1p1/3p1p2/1PPP1P2/3BPN2/P4QPP/1RR3K1 b - - 2 19 | Rdc8 | What piece is on a7? | Empty | occupancy |
r1b2rk1/p3q1n1/2Pp2pb/1N1Pp2p/PQ2P2P/3N3P/4BBK1/7R b - - 3 32 | Ne8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1rr2k2/p5bp/5pp1/q2B2Q1/1p2P1P1/P4P2/1PP5/1K1R3R w - - 1 22 | Qd2 | What is the material balance in this position? | White is up 1 pawn of material | material |
4qrbk/2p1r1bp/6p1/1pp5/3pP2P/1P1P1N1N/2P2RPQ/5RK1 b - - 1 32 | Ref7 | What is the material balance in this position? | Equal | material |
r1b4r/1p1qpQ1p/p2P1npB/8/2P1k3/8/P4R1P/2K5 w - - 0 26 | Rxf6 | Does Black have any isolated pawns? | Yes: e7 | structure |
1rbqk2r/ppp2ppp/2n1p3/6Q1/3Pn3/B4NP1/p3PPBP/R4RK1 w k - 2 12 | Qg4 | Identify any Black knight outposts on the board. | None | outposts |
rnbq1rk1/pp2bppp/4pn2/8/P1Bp4/2N1PN2/1P2QPPP/R1B2RK1 w - - 0 10 | exd4 | Does Black have any passed pawns? | No | structure |
r1q1k1nr/pppbppbp/2np2p1/8/3PP3/5NP1/PPP2PBP/RNBQR1K1 b kq - 2 7 | Bh3 | Are there any open files in this position? | No | files |
rnbqr1k1/pp3pb1/3p1npB/2pP4/4P3/2N2P2/PP1Q2PP/R3KBNR b KQ - 0 11 | Nxe4 | Identify any White knight outposts on the board. | None | outposts |
4r1k1/1pp1rp2/3p1Qp1/p1bP4/8/5BPP/PPb4K/5R2 b - - 1 26 | Bd3 | Is the Black king in check? | No | check |
b4rk1/2Q2p2/3p2pp/2p5/8/3R3P/3N1PP1/4r1K1 w - - 2 28 | Kh2 | What is the material balance in this position? | White is up 2 pawns of material | material |
3r2k1/1pp1qbp1/p1p1np1p/8/4P3/2N1QPBP/PPP3PK/3R4 w - - 1 22 | Qa7 | What is the material balance in this position? | Equal | material |
r2qk2r/5pb1/p1bpp3/1p4p1/4Pn1P/1BN2QB1/PPP3P1/2KR3R b kq - 1 19 | Be5 | Are there any open files in this position? | No | files |
r3kb2/5pp1/p3p3/1p1bP2r/8/P1B2P1p/1P4PP/R3KB1R b KQq - 2 20 | Rg5 | What piece is on a6? | Black Pawn | occupancy |
1r4k1/1N5p/3Ppp2/1P2n3/3n2p1/8/5PPP/3R1BK1 w - - 3 36 | Nc5 | What piece is on h3? | Empty | occupancy |
r3k2r/ppp1bppp/2n1b3/6NQ/8/q1PB2N1/P4PPP/R4RK1 b kq - 6 15 | Bxg5 | Does White have any passed pawns? | No | structure |
3rk2r/pR3p1p/2p1p1Bp/3n4/3q2P1/4RP2/P1P2Kb1/2BQ4 b k - 1 21 | Ne7 | Does Black have any isolated pawns? | Yes: a7, c6, h6, h7 | structure |
3r4/5p1P/5p2/3p1k2/3P4/1R6/5P2/6K1 b - - 0 46 | Rh8 | What piece is on h7? | White Pawn | occupancy |
rnb1kb1r/1p1ppppp/pq3n2/8/3P1B2/2N5/PPP2PPP/1R1QKBNR b Kkq - 1 6 | d5 | Identify any White knight outposts on the board. | None | outposts |
5r1k/3b2pp/p3p3/3pPpB1/2pP3Q/4P2R/n1q3PP/5BK1 b - - 3 25 | f4 | Does White have any passed pawns? | No | structure |
2r1b1k1/p1q1brp1/1p2p1QB/4p3/4N3/2PBR3/P4PPP/6K1 w - - 0 1 | Qh7+ | Is the move from g6 to h5 legal? | Yes | legality |
2kr1b1r/ppp4p/2npqp2/8/2N1p3/8/PPP1BPPP/RN1QR1K1 b - - 1 12 | f1e1 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/pp6/2p2n1K/4kP2/7P/P7/8/8 b - - 0 41 | Kxf5 | What piece is on h6? | White King | occupancy |
2rr4/pp3pk1/3qp1pp/1b1n4/3P1PN1/2P3Q1/P5PP/1BR2RK1 w - - 0 25 | Ne5 | Are there any open files in this position? | No | files |
3qr1k1/1b3pp1/3b4/2npp1N1/4P3/2BP4/BQ3PP1/4R1K1 w - - 0 28 | Bd2 | What piece is on b4? | Empty | occupancy |
4k1b1/2R3p1/p2PNp1p/3P1P2/4P1P1/1n3K1P/pr2N3/8 w - - 2 45 | Re7# | What piece is on a6? | Black Pawn | occupancy |
rnb1kbnr/1p3ppp/p7/2ppqP2/8/3PNNP1/P1PB3P/1R1QK2R b Kkq - 1 13 | g1f3 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r1b4r/1p2k2p/2p2pp1/p1n1p3/4P2P/2P1NP2/PPK3P1/R4B1R b - - 0 15 | h5 | Is the move from h8 to b5 legal? | No | legality |
5K1k/8/8/8/8/4R3/2b5/8 b - - 0 3 | Bh7 | Is the White king in check? | No | check |
rn2kbnr/pp3ppp/Q1p1p3/3pP3/3P4/2P2N2/PP3PPP/RNB1K2R b KQkq - 0 8 | Nxa6 | Does Black have any isolated pawns? | No | structure |
2q1r1k1/1b2rpbp/p2p1np1/1p6/1Pn1PP2/1RNQ2PP/P1N3BK/2B1R3 w - - 11 22 | Ne3 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
8/p2R1kb1/Pp3p2/1n3Pp1/3P2N1/1r6/5B1P/7K b - - 3 43 | Kf8 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
2rqr1k1/5p1p/p2p2p1/1p1Pn1P1/6Bb/1P2B2P/P1PQ4/1K1R1R2 b - - 1 24 | Rc7 | Are there any open files in this position? | Yes: e | files |
6k1/5pp1/3N2b1/3Bp1B1/7K/5P2/6r1/8 w - - 14 44 | Be3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2k5/1r6/3B3R/3K4/8/8/8/8 b - - 15 70 | Kd7 | Is the b-file open, semi-open, or closed? | open | files |
8/p1k5/8/P1p5/3p4/3P4/2K1r3/8 w - - 2 49 | e7e2 | Is the White king in check? | Yes | check |
rnbqkbnr/ppp2ppp/8/3Pp3/8/3P4/PPP2PPP/RNBQKBNR b KQkq - 0 3 | e4d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqr1kb/ppp1np1p/2np2pB/8/2BPP3/2N2N2/PPP2QPP/R4RK1 b - - 5 11 | Bg4 | Does White have any passed pawns? | No | structure |
r2q1rk1/p5pp/bppbpn2/3p1p2/2PP4/1P4P1/PB1NPPBP/2RQ1RK1 w - - 4 15 | Nf3 | Is the White king in check? | No | check |
2r2rk1/p2qbppp/bp2p3/3nB3/3P4/2N3P1/PP3PBP/R1RQ2K1 b - - 2 20 | Nb4 | Does Black have any passed pawns? | No | structure |
r2r2k1/pb1qbp1p/2n1p1p1/1N2P3/PP1p1PP1/2PQ3P/4NB1K/R2R4 w - - 4 22 | Nexd4 | Does Black have any isolated pawns? | Yes: a7 | structure |
r2q1rk1/1bp2ppN/p7/1pbBP3/3n4/8/PPPP2PP/RNBQR1K1 b - - 0 13 | Qh4 | Identify any White knight outposts on the board. | None | outposts |
2b1r1k1/5p2/p2q2pp/1p6/P2Pr2P/2P1B1P1/P3QPK1/3RR3 b - - 5 30 | Qd5 | What is the material balance in this position? | White is up 2 pawns of material | material |
2r1k3/7p/p2Qppr1/2n2p1B/1pP5/6P1/Pq3P1P/3RR1K1 w - - 2 27 | Bxg6+ | Does White have any isolated pawns? | Yes: a2, c4 | structure |
3rr3/ppk1N1bp/2p1b1p1/5p2/Q1P5/5B2/Pq3PPP/R3R1K1 b - - 3 24 | Bd4 | Is the Black king in check? | No | check |
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