fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
4nk2/R2n2r1/1p1p3Q/4p2P/4P3/2qP4/2P2P2/4K2R w K - 1 41 | c6c3 | Is the White king in check? | Yes | check |
2kr3r/2p3pp/p1P2b2/8/pB1p4/1Np5/5PPP/R4RK1 b - - 0 22 | d3 | Is the move from d8 to h7 legal? | No | legality |
8/8/4K3/8/8/4Q3/3p4/3k4 b - - 23 13 | Kc2 | Is the move from d1 to c1 legal? | Yes | legality |
r1bq1rk1/1p1nbppp/2p5/p2pP3/5B2/2N3P1/PP2PPBP/R2Q1RK1 w - - 0 13 | e4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r1b1k2r/2qn1ppp/3ppn2/1p6/3QPP2/P1N1B2P/1PP3P1/R4R1K w kq - 0 15 | Nxb5 | What piece is on b4? | Empty | occupancy |
r3kb1r/pp2pppp/1np2n2/1P6/8/Nb3NP1/3PPPBP/R1B2RK1 b kq - 0 12 | c5 | Are there any open files in this position? | No | files |
r1b1k2r/3p1pp1/1pn1pq1p/8/1bP5/1QN2N2/PP2PPPP/R3KB1R w KQkq - 0 10 | e3 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1q1rk1/1b1nbppp/p2p4/1p2pNP1/4P3/2N4P/PPP3B1/R1BQ1RK1 w - - 1 15 | Qg4 | Identify any Black knight outposts on the board. | e5 | outposts |
rn2kbnr/1pN2pp1/p1q3bp/2p5/3pPBPP/N4P2/PPP1B3/R2QK2R b KQkq - 5 16 | d5c7 | Is the Black king in check? | Yes | check |
8/6p1/8/6bp/3k4/N4P2/4K3/8 b - - 3 64 | Bf4 | Does White have any passed pawns? | No | structure |
r3k2r/pp1n1p2/2pqppb1/3P3p/2B4P/6N1/PPP2PP1/R2QR1K1 b kq - 0 14 | Nb6 | Is the move from a7 to b1 legal? | No | legality |
8/5k2/8/p2P1n2/P1p2B2/Np3n1P/1P5r/1R1K4 b - - 19 49 | Rf2 | Identify any Black knight outposts on the board. | b3, d3 | outposts |
r2qk2r/p2pbppp/bpn1p3/2pnP3/2P1B3/3P1N2/PP3PPP/RNBQK2R b KQkq - 0 9 | f5 | What piece is on b2? | White Pawn | occupancy |
2k1r2r/pppb2p1/7p/3p1p1n/PP6/3B1P2/2P2BPP/R4R1K w - - 2 23 | Bxa7 | Is the move from f2 to d3 legal? | No | legality |
1kr2r2/pb4pp/4p3/1qR1N3/8/6Q1/PP3PPP/2R3K1 w - - 1 25 | Nd3+ | What is the material balance in this position? | White is up 1 pawn of material | material |
1n4k1/1q1nbppp/p3N3/8/2r1P1N1/1P2QPP1/1B4KP/8 w - - 0 2 | Nh6+ | Is the move from e6 to h6 legal? | No | legality |
r5k1/2p2pp1/3p3p/3N3P/Q5P1/8/KPPn4/R1R5 b - - 4 36 | Rxa4# | What piece is on d5? | White Knight | occupancy |
rn2kbnr/ppp2ppp/3p4/4P3/2BP4/5bPq/PPP2K2/RNBQ3R w kq - 0 11 | Qxf3 | Identify any Black knight outposts on the board. | None | outposts |
8/4r1p1/pR1bk3/4p3/8/2P2QP1/5PK1/2q5 w - - 20 38 | a3d6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r3k2r/1pp1bpp1/p1pqbn1p/4p3/P3P3/N2P4/1PPN1PPP/R1BQ1RK1 b kq - 1 10 | Qd8 | What piece is on d3? | White Pawn | occupancy |
r1bqr1k1/ppp2pp1/2np1n1p/4p3/1PB1P3/P1NPPQ1N/2P3PP/R3K2R w KQ - 0 11 | Rf1 | Are there any open files in this position? | No | files |
rn1q2k1/pb2b3/2p3Q1/1p2PpB1/2pP4/2P5/P5P1/R4K2 b - - 5 28 | Kh8 | Identify any Black knight outposts on the board. | a4, g4 | outposts |
7r/k6p/3QP2b/8/1r5q/7B/PPP4P/1K1R4 w - - 1 39 | Qc5+ | What piece is on f7? | Empty | occupancy |
r3k2r/pp1b1n1p/4pp2/2PpN3/1P3qP1/P7/1B3P1P/2RQKBR1 b kq - 0 18 | fxe5 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
8/5k2/8/2p1P1p1/p1Pp2Pp/b6P/P1K5/4N3 w - - 4 126 | Nf3 | Identify any White knight outposts on the board. | d6, f6 | outposts |
5b2/7p/1p4p1/1k1p1p2/1PpPpP2/n1P1P1P1/1R1K1B1P/r2N4 b - - 11 42 | Ka4 | What piece is on c4? | Black Pawn | occupancy |
8/p7/8/r1pB1Pkp/b1P1P2p/7K/R7/8 w - - 4 38 | Bb7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr2r1/pp3p1p/2b1qn2/2P1n3/5Q2/2N1P1P1/P3BP1P/R1B2RK1 b - - 4 19 | Qh3 | Are there any open files in this position? | Yes: d | files |
r5k1/1p5p/p3b1p1/2n1b3/2P5/N1N2BqP/PPR3P1/3Q1K2 b - - 2 24 | Rf8 | Identify any White knight outposts on the board. | d5 | outposts |
5rk1/1p2Qp1p/b5p1/3P4/8/1B3P1P/Pq4P1/4R2K w - - 2 32 | d6 | Is the move from e1 to h6 legal? | No | legality |
4r1k1/1p3b1p/2p2r2/2N1np2/2PR4/1P4PP/6B1/5RK1 b - - 0 28 | b5 | What piece is on g6? | Empty | occupancy |
r2qkbnr/pp2pppp/8/2Ppn3/6b1/2P2N2/PP3PPP/RNBQKB1R w KQkq - 2 7 | Nxe5 | Is the Black king in check? | No | check |
8/p1pk4/1p6/1r1K4/8/1n6/8/8 w - - 0 45 | b4b5 | Is the Black king in check? | No | check |
rnb1r1k1/3pPpb1/5n1p/qpp1B1p1/8/2N2N2/PP1QPPPP/R3KB1R b KQ - 2 13 | Nc6 | Identify any White knight outposts on the board. | None | outposts |
r3r1k1/1pqbbppp/p2ppn2/P7/1n2PP2/2NBBN2/1PP3PP/R2Q1R1K b - - 2 14 | Rac8 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rn1q1rk1/pp3ppp/2pb4/6N1/2PPp1b1/1Q6/PP3PPP/RNB2RK1 b - - 1 11 | Be7 | Is the White king in check? | No | check |
5rk1/p4ppp/bpP2n2/8/5B2/6P1/P2q1PBP/R5K1 w - - 0 23 | Bxd2 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
2kr1b1r/ppp3pp/2n1b3/4q3/4N1P1/2P1pP2/PPQ1P1BP/R3K1NR b KQ - 1 14 | Be7 | What piece is on g3? | Empty | occupancy |
r1b1qrk1/ppp3bp/n4ppn/4p3/2P1P3/2N2N1P/PP1BBPP1/R2Q1RK1 w - - 2 13 | c5 | Is the d-file open, semi-open, or closed? | open | files |
rnbqk2r/ppppbppp/5n2/6B1/2BQ4/5N2/PPP2PPP/RN2K2R w KQkq - 3 4 | Nc3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3r2k/p4pb1/2NB3p/5N2/2PP1pn1/1Q2p3/P3P1Bq/R2R1K2 b - - 2 27 | Bf6 | Is the Black king in check? | No | check |
2b3r1/2R5/2P5/1k1pPpP1/8/5B2/5KP1/8 w - - 0 40 | Bxd5 | What piece is on e5? | White Pawn | occupancy |
2kr3r/p4p2/1p3P2/3B1qpp/2P1p3/5nB1/P1P2PRP/1R1Q1K2 w - - 0 22 | c3 | Does White have any passed pawns? | No | structure |
6Q1/8/4R2p/2p2kp1/5p2/8/P1P2PPP/q5K1 w - - 1 35 | e5a1 | Is the White king in check? | Yes | check |
rnb1kb1r/ppp2ppp/5n2/3q4/5P2/3B1N2/PPPN2PP/R1BQK2R b KQkq - 1 7 | Be7 | What piece is on c7? | Black Pawn | occupancy |
rn1q1rk1/1ppbbppp/p3pn2/8/P1pP4/5NP1/1PQ1PPBP/RNB2RK1 w - - 1 9 | Qxc4 | What piece is on b3? | Empty | occupancy |
1rbq1rk1/1p2ppbp/p1np1np1/2p5/2P1P3/2NP2PP/PP2NPB1/R1BQ1RK1 w - - 0 10 | a4 | Is the White king in check? | No | check |
Q5nr/p2k1Rpp/8/4P1B1/6b1/2P5/PP4pP/RN4K1 b - - 0 18 | f1f7 | Is the Black king in check? | Yes | check |
3r1rk1/1b3p1p/pp1b2p1/3p1q2/4n3/2BQPN2/PP3PPP/1NRR2K1 b - - 13 22 | Qh5 | Are there any open files in this position? | Yes: c | files |
4r2k/pb3K1p/2q5/6p1/3P2n1/8/PP1PQPP1/RNB2R2 b - - 8 23 | Nh6# | Identify any White knight outposts on the board. | c5, e5 | outposts |
r3r2k/5Bpp/p2q1n2/1p2p3/4Q3/8/PP3PPP/2RR2K1 w - - 1 25 | Qf5 | Is the move from a2 to f8 legal? | No | legality |
8/8/5kp1/2pB1p1p/b3p2P/2K1P1P1/5P2/8 b - - 4 74 | g5 | Is the move from f6 to g7 legal? | Yes | legality |
r2q1r1k/1p3p2/p2p2pp/2bPpb1N/8/2PB4/PP4PP/R2Q1R1K w - - 2 21 | Bxf5 | Is the move from c3 to a7 legal? | No | legality |
r4r2/1b3pkp/pp1p1nq1/1PpP1p2/P1P1p3/6NP/3QBPP1/R4RK1 w - - 4 24 | Qf4 | Are there any open files in this position? | No | files |
r1bq1rk1/1p1nb1p1/2p1p2p/p2p1p2/2PP1B2/1PN3P1/P1Q1PPBP/R2R2K1 b - - 1 15 | g5 | Is the f-file open, semi-open, or closed? | closed | files |
r4rk1/p2nqpp1/4b2p/2pp4/4P3/3B1N2/PP3PPP/2RQ1RK1 b - - 0 15 | d4 | What piece is on f6? | Empty | occupancy |
r1b2rk1/1p4p1/p3pp2/2n2NqQ/8/7R/PPP3PP/R6K w - - 0 21 | Ne7# | Does White have any isolated pawns? | No | structure |
rn1r2k1/pp2qpp1/1bb1p2p/8/2BPN3/P4N2/1PQ1RPPP/4R1K1 b - - 8 17 | Kh8 | Identify any Black knight outposts on the board. | d5 | outposts |
R7/2pk3p/6p1/2P5/8/8/3r1PPP/6K1 w - - 0 34 | g3 | Is the White king in check? | No | check |
rnbqkb1r/pppp1ppp/5n2/4Q3/4P3/8/PPPP1PPP/RNB1KBNR b KQkq - 0 3 | h5e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1qkb1r/3n1pp1/p1p1p1p1/1pPp4/3P2P1/1PN1P2P/P4P2/R1BQKB1R w KQkq - 0 12 | Bg2 | What is the material balance in this position? | Equal | material |
r2q1r1k/1p1n2pp/p1p2n2/2Ppb3/8/2N1PP2/PPQBN1PP/2KR3R b - - 2 15 | Nxc5 | What piece is on g1? | Empty | occupancy |
4kb1r/2q2pp1/1r1p1n1p/p1p1p3/2P1P3/1PP1Q2P/P4PP1/RNB1K2R b KQk - 3 17 | Be7 | What piece is on h2? | Empty | occupancy |
r3k2r/pp2ppbp/2npqnp1/8/2P1P3/2N5/PP2NPPP/R1BQ1RK1 w kq - 3 11 | Nd5 | Are there any open files in this position? | No | files |
r3r1k1/1p1q1npp/1Pp1ppb1/2Pp4/P2P1P2/2BNP3/2BQ2PP/5RK1 w - - 1 20 | a5 | Is the a-file open, semi-open, or closed? | semi-open for Black | files |
rnbqk2r/ppp1ppb1/5n1p/6p1/2pPP2B/2N2N2/PP3PPP/R2QKB1R w KQkq - 0 8 | g6g5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2b1rk1/1p3ppp/p2N4/2pP4/P1Pn1pq1/1P1Q4/1BP4P/R4R1K w - - 0 21 | Bxd4 | Is the Black king in check? | No | check |
5k2/p3Np1p/1b4p1/1p6/1P2p3/2P3P1/P4PP1/5K2 w - - 3 33 | Nd5 | Is the move from g2 to e6 legal? | No | legality |
7r/8/2pkp1R1/2b5/p1P3P1/2B5/P1K1P3/8 b - - 0 41 | Rh2 | Identify any Black knight outposts on the board. | None | outposts |
3bk2r/3b3p/3p1p2/3Pp1p1/4r1P1/1K5P/4N3/1B1R1R2 w k - 0 36 | a4e4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
7Q/1pp4p/3pk3/2P1p3/1P5q/4KP2/6PP/5R2 w - - 0 36 | Qc8+ | What is the material balance in this position? | White is up 5 pawns of material | material |
r1bqk2r/p2nbppp/1p2pn2/3pN3/3P1P2/2PB4/PP1N2PP/R1BQK2R b KQkq - 1 9 | Nxe5 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/ppp2p1p/2n1b1p1/2N1b1B1/2P5/8/PP2BPPP/2KRR3 b - - 5 14 | Rfe8 | Does Black have any isolated pawns? | No | structure |
3Qnr1k/6pp/p2Ppp2/1p1n4/3PN1P1/1P1B2BP/P4P2/2q3K1 w - - 1 35 | Kh2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1k1r1b1r/ppp4p/6p1/5q2/1nPpNP2/5Q2/P3PPBP/R2R2K1 w - - 0 19 | Nd6 | Are there any open files in this position? | No | files |
5rk1/3q4/5n1p/pp3Pp1/8/1P1pQ1P1/P6P/R2R2K1 b - - 0 29 | Re8 | Identify any White knight outposts on the board. | e6 | outposts |
rnb3kr/ppp2ppp/1b6/3q4/3pN3/Q4N2/PPP2KPP/R1B1R3 w - - 0 12 | Nf6+ | Identify any White knight outposts on the board. | None | outposts |
5r1k/2p1r2p/ppq1P3/2p4Q/P7/1P1PpN2/2P3P1/4R1K1 w - - 0 41 | Ng5 | Is the move from e1 to b1 legal? | Yes | legality |
5r2/1p4p1/2b1pp2/2P2k1p/p2R1P2/P5PP/1P1B1K2/8 w - - 7 32 | Kg1 | Identify any Black knight outposts on the board. | None | outposts |
4R3/1pp2ppp/2p1k3/2B2b2/8/1PP3KP/r5P1/7r b - - 5 31 | f8e8 | Is the Black king in check? | Yes | check |
5R2/pp1q2pk/6br/3pB3/3P1Q2/6P1/PP4P1/6K1 b - - 11 32 | Rh5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1kqr3/pb2R3/8/1ppPQ3/2P3BP/2P5/PB4P1/R5K1 b - - 2 23 | h5g4 | Is the Black king in check? | Yes | check |
5rk1/5p1p/6bQ/2R5/2pP4/2q5/7P/5BK1 w - - 0 37 | Qf4 | Does Black have any isolated pawns? | Yes: c4, f7, h7 | structure |
rn1qkb1r/pp2pppp/2p2n2/3p1b2/2PP4/5N2/PP1NPPPP/R1BQKB1R w KQkq - 4 5 | Nh4 | Does Black have any isolated pawns? | No | structure |
r2qk2N/ppp1bppp/2nnb3/3p4/8/2NP4/PPP1QPPP/R1B1KB1R w KQq - 3 9 | b8c6 | What is the material balance in this position? | White is up 5 pawns of material | material |
r1b1r1k1/1pq2ppp/p1nbpn2/3p4/2PP4/1P1B1N2/PB1N1PPP/R2QR1K1 w - - 9 12 | Rc1 | Are there any open files in this position? | No | files |
5rk1/1p3pb1/2bpp1pq/5n2/1RP1N3/3PP1P1/r2B1PB1/3QR1K1 b - - 8 22 | d5 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
2r2k2/4pp1p/P2p2p1/1p1r4/5PPP/PK2R3/2P5/5B2 w - - 0 30 | Rc3 | What piece is on a3? | White Pawn | occupancy |
r2q2k1/3n2pr/p7/1p1N4/4Q2b/4B2P/PPP5/3RKR2 w - - 3 25 | f6h4 | Is the White king in check? | Yes | check |
8/7p/2k3p1/2pp4/2R1pb2/P7/5K1P/3R4 b - - 0 38 | dxc4 | Does White have any passed pawns? | Yes: a3 | structure |
r3qr1k/1p1b1p1p/2p5/p3P1Q1/8/6P1/PP3PBP/5RK1 w - - 0 21 | Qf6+ | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
8/ppp3p1/3p1Rk1/8/5P1Q/2P5/P1P3P1/6K1 b - - 0 30 | e6f6 | Is the Black king in check? | Yes | check |
r5r1/pb1kb2p/1pp1pR2/3pP3/6q1/3P1NB1/PPQ3PP/2R3K1 w - - 0 23 | d4 | Does White have any passed pawns? | No | structure |
6k1/pp2p1b1/2n5/2p3Q1/P1Np2pP/1PnP2q1/2P2rB1/R5RK b - - 3 33 | Kf8 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
2r4k/br5p/2q1bp2/1p3np1/1P1pN3/2P1P2P/1Q2BPPB/2R1N1K1 b - - 0 31 | dxe3 | What piece is on b3? | Empty | occupancy |
2rq1rk1/1b3ppp/pn1bp3/1p2N3/2PPpP2/2P1P3/P2BB1PP/1R1Q1RK1 b - - 0 17 | Bxe5 | Is the White king in check? | No | check |
1rbqk2r/5ppp/p1np4/3Np1b1/1pP1P3/5Q2/PPN2PPP/R3KB1R w KQk - 4 15 | b3 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/pppp1ppp/8/4n3/4Q3/P1P4P/1PP2PP1/R1B1KB1R b KQ - 0 9 | d5 | What piece is on f5? | Empty | occupancy |
3r1rk1/pp3p1p/3qpp2/7P/5n2/1B1b1QN1/PP3PP1/R3R1K1 w - - 1 20 | Ne4 | Is the move from g3 to e2 legal? | Yes | legality |
r1bq1rk1/p4pb1/1p2p1np/2p3p1/P1BnP3/2NP1NB1/1PP3PP/R2Q1R1K b - - 0 14 | Bb7 | Identify any White knight outposts on the board. | None | outposts |
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