fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqk2r/pppp1ppp/8/8/1bPN4/3Q4/PP1NPPPP/R3KB1R b KQkq - 0 7 | O-O | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
1K1q4/P7/8/8/6k1/8/8/8 w - - 14 64 | d7d8 | Is the White king in check? | Yes | check |
2n1qrk1/1R3pp1/4b2p/b2p4/2pP2P1/p1P2QB1/P1B2PP1/5NK1 w - - 2 27 | g5 | Is the move from b7 to c3 legal? | No | legality |
8/8/1k6/3R1K2/1PP5/3P4/8/1b6 b - - 4 54 | c5d5 | What is the material balance in this position? | White is up 5 pawns of material | material |
rnbqkb1r/pp2pp1p/2p2np1/3p4/2PP4/2N1P3/PP3PPP/R1BQKBNR w KQkq - 0 5 | f4 | What piece is on d6? | Empty | occupancy |
5r1k/6bp/2p3p1/q3nb2/P4N2/1Q2BP2/5KPP/5B1R w - - 2 24 | h4 | Is the White king in check? | No | check |
r4rk1/p2q1pbp/2R1p1p1/3n4/Q7/6P1/P2BPPBP/5RK1 w - - 2 19 | Rfc1 | Is the move from e2 to c7 legal? | No | legality |
r3r1k1/1p2pp2/3p1qp1/p2P3p/P1P1RP2/1P1Q2PP/4RBK1/b7 w - - 1 45 | c5 | Are there any open files in this position? | No | files |
2b5/5k2/2pb2p1/3p2P1/p2Prp1p/P1q4P/1PN2PN1/3K2R1 w - - 0 56 | bxc3 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
4k2r/4bpp1/pn2b2p/1p2p3/6PP/P1P2P2/2PB4/1K1R1B1R w k - 2 21 | Re1 | What is the material balance in this position? | White is up 2 pawns of material | material |
2krr3/p1p2p1p/1pnb4/2pN1b2/2P2P2/4B3/PP3KPP/3R1B1R b - - 3 19 | Nb4 | Are there any open files in this position? | Yes: d, e | files |
r7/3kb3/p5Rp/1q1p4/1p1B4/1P6/P4PPP/3Q2K1 w - - 1 35 | Rb6 | What piece is on c5? | Empty | occupancy |
7k/6rq/5Q2/8/K7/8/8/6R1 w - - 0 1 | Ka5 | What piece is on a4? | White King | occupancy |
8/5pp1/3p2p1/3k4/r2P4/P2R3P/4KP2/8 b - - 10 45 | g5 | Is the c-file open, semi-open, or closed? | open | files |
r1b4r/1p1p1pp1/p2kp2p/q3N3/P1B5/2P1Q2P/1P4P1/R3K2n w Q - 0 17 | Nxf7+ | What is the material balance in this position? | Black is up 7 pawns of material | material |
rnbq1rk1/1pp1ppbp/p2p1np1/8/P2PP3/2N1BN1P/1PP2PP1/R2QKB1R b KQ - 2 7 | b6 | Identify any Black knight outposts on the board. | None | outposts |
rnbqk2r/pppp1ppp/4pn2/8/1bPP4/5N2/PP1NPPPP/R1BQKB1R b KQkq - 3 4 | Nc6 | Does Black have any isolated pawns? | No | structure |
3Q4/5pk1/2r1P1p1/1p5p/4q2P/6P1/5P2/R5K1 b - - 0 40 | Rc3 | What piece is on c1? | Empty | occupancy |
rn1r2k1/ppq2pp1/1bb1p2p/6N1/1PBP4/P4N2/2Q2PPP/3RR1K1 b - - 6 18 | hxg5 | Is the move from d8 to d4 legal? | Yes | legality |
N1bk1r2/p2n3p/2p2n2/2p1p3/4P3/5P2/PPP3PP/RN1R2K1 w - - 0 21 | Rd3 | Are there any open files in this position? | Yes: d | files |
8/8/6kp/r2p4/5PP1/3R2KP/8/8 w - - 1 52 | Kh4 | What piece is on e7? | Empty | occupancy |
2r1qrk1/p3bp2/bp3np1/3pN2p/2PNB3/1P4PQ/PB3P1P/3R1RK1 b - - 0 19 | dxe4 | What is the material balance in this position? | White is up 3 pawns of material | material |
r3kb1r/pp1q2pp/4pn2/8/1n1p4/2N1PN2/PP3PPP/R1BQK2R w KQkq - 0 11 | exd4 | What piece is on b4? | Black Knight | occupancy |
2r1r1k1/1bpq1p2/pp1p1p1p/3P4/1P1QPP2/P5P1/2R3BP/2R3K1 b - - 1 22 | Kg7 | Identify any Black knight outposts on the board. | None | outposts |
2rR1nk1/5p1p/5p2/5N2/2q1Q3/6P1/5PKP/8 w - - 2 3 | Rxf8+ | Is the Black king in check? | No | check |
8/1R6/8/p5p1/5b2/2K5/r1p5/3k4 w - - 2 67 | c1d1 | What is the material balance in this position? | Black is up 6 pawns of material | material |
rn1qkb1r/1p2ppp1/p1p2n1p/4N3/P2P3P/3Q2N1/1PP2PP1/R1B1K2R b KQkq - 0 11 | e6 | Identify any White knight outposts on the board. | None | outposts |
rn1qr2Q/pbppk1p1/1p2p3/3nP1N1/1b1P4/2N5/PPP2PPP/R1B1K2R w KQ - 7 15 | Qxg7# | Is the move from e1 to c6 legal? | No | legality |
3q1rk1/p1ppnpbp/b5p1/8/1rn1P3/PBNQ1N2/1PPB1PPP/2KR3R b - - 0 14 | Nxd2 | Identify any White knight outposts on the board. | None | outposts |
2b5/8/p2p2k1/P1pP3p/4K2P/8/1P2B3/8 w - - 61 79 | Ke3 | Identify any White knight outposts on the board. | None | outposts |
r6r/ppk1bBp1/2pp1pn1/7p/3BPPbP/6P1/P1P1N3/1R3RK1 w - - 8 20 | Bxg6 | Is the White king in check? | No | check |
r1bq1rk1/pp2bppp/2n1pn2/1N6/8/1NP1B3/PPQ2PPP/R3KB1R b KQ - 4 11 | Nd5 | Is the move from e6 to f4 legal? | No | legality |
rnbqk2r/pp3pbp/2p2pp1/8/2BP4/5N1P/PPP2PP1/R1BQK2R b KQkq - 1 8 | O-O | What is the material balance in this position? | Equal | material |
r7/2pn1pk1/p1p1p1p1/3PP2r/N2q1P2/1P2P2P/PK6/R6R w - - 0 29 | b4d4 | Is the White king in check? | Yes | check |
3r2k1/5ppp/p3p3/2p4B/2p2B2/3r1n2/PP2QPPP/3R2K1 w - - 4 24 | d2f3 | Is the Black king in check? | No | check |
8/1p2k3/2p1p3/p1PpN1p1/8/1P4P1/P2K4/r2B4 b - - 11 52 | Kf6 | Does Black have any isolated pawns? | Yes: g5 | structure |
4k2r/1p1b1pp1/pb6/3pPp2/P2q1P2/2pN1Q2/2P3PP/R1R4K b k - 3 25 | Bxa4 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
rnbqkb1r/ppp2ppp/4pn2/8/3P4/4BN2/PPPN2PP/R2QKB1R b KQkq - 0 6 | Be7 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/3n2b1/2qpb3/1p2ppPQ/1P2P3/2PBB3/8/1N3R1K w - - 0 39 | Qh3 | What is the material balance in this position? | Equal | material |
8/4kp2/p7/5pP1/1PpBp1n1/P7/2K2P2/8 w - - 1 38 | a4 | Identify any White knight outposts on the board. | a5, c5, f6, h6 | outposts |
2r1r1k1/2q1b1p1/p3p1Pp/1pnbP3/3NpPB1/2P1B3/PPQ5/1K1R3R w - - 2 22 | Rh5 | What is the material balance in this position? | Equal | material |
3r1rk1/p1q1b2p/2p1bpp1/2P1n3/3pPB2/1N1B2QP/PP4P1/2R2RK1 w - - 0 20 | h4 | Does Black have any isolated pawns? | Yes: a7 | structure |
r4rk1/1pp3pp/1P1p4/3Pp3/1P4qn/4P1P1/PBQ2P1K/R4R2 b - - 2 22 | Nf3+ | Is the move from c7 to c6 legal? | Yes | legality |
rnbqk1nr/pppp1ppp/8/4p3/1bP5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3 | Nd5 | What is the material balance in this position? | Equal | material |
R7/8/8/5k2/5p2/3P4/1r6/3K4 w - - 6 50 | Ke1 | Identify any Black knight outposts on the board. | g3 | outposts |
r1b1r1k1/p2p1pbp/2pB1np1/6N1/2q1n1PP/Q7/PP2PN2/1K1R1B1R w - - 4 21 | e3 | Is the move from a3 to a6 legal? | Yes | legality |
2r1k2r/1p3pb1/p1nBb1pp/8/4P1B1/2N3NP/PqPQ4/R3KR2 w Qk - 0 18 | e5 | What piece is on b7? | Black Pawn | occupancy |
r1bq1rk1/1p3ppp/p1n5/4p3/2Pb4/1PN3P1/PB1Q1PBP/R4RK1 b - - 1 17 | Qa5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r3r2k/p2R2pp/Pp2Pbq1/1Pp2p2/4pP2/1QP1B3/4B1PP/6K1 b - - 0 24 | Re7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r3qrk1/1ppb2bp/1n1p2p1/3Pp1B1/1PP1p3/2N4P/2Q1BPP1/1R2K2R b K - 1 19 | e3 | Is the move from d7 to f5 legal? | Yes | legality |
r2qk3/pp2n3/2ppPpp1/6p1/2B5/7P/PP1Q1P1P/4R1K1 b q - 1 20 | d5 | Is the White king in check? | No | check |
r1br2k1/ppp1bppp/2n1pn2/8/2NP4/4PNP1/PP1B1PBP/R1R3K1 b - - 0 13 | Rb8 | Does Black have any passed pawns? | No | structure |
2r2r2/Qp3kpp/4pq2/2ppPn2/8/2P5/PP3PPP/RN2R1K1 b - - 0 17 | d4e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2r5/R4p2/4nkp1/8/p1P1P2p/2K5/P4NPP/8 b - - 3 41 | Nc5 | Does White have any isolated pawns? | Yes: a2, c4, e4 | structure |
r2r2k1/2q2p1p/6p1/1p1P4/2pQN3/3n2P1/P4PP1/2R1R1K1 b - - 3 23 | Qa7 | What piece is on c7? | Black Queen | occupancy |
8/8/7p/3Npq2/p7/Pn6/KP4k1/4Q3 b - - 1 48 | Kh3 | Does Black have any passed pawns? | Yes: e5, h6 | structure |
8/3k4/p2n1bp1/2p1p2p/2P1P3/3K3P/P4BP1/4N3 b - - 26 65 | Kc6 | Does White have any isolated pawns? | Yes: a2, c4, e4 | structure |
1q1r1nk1/1b3pp1/1B2p2p/p7/Bb2P3/4QN2/1P3PPP/2R3K1 b - - 7 24 | Rc8 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
2r3r1/1p3p1k/6p1/1BqpPbBp/P1n2Q1P/2R3R1/5PPK/8 b - - 13 38 | Be6 | Identify any White knight outposts on the board. | b5, d6 | outposts |
4r3/pkp5/1p2r3/7p/4p1p1/6P1/PPPBR1P1/4R1K1 b - - 1 25 | c3d2 | What is the material balance in this position? | White is up 2 pawns of material | material |
2rq1rk1/pb3ppp/1p2pn2/4N3/1b1PPB2/4R1P1/P4PBP/R2Q2K1 w - - 5 16 | d5 | Is the move from f4 to e8 legal? | No | legality |
r1bqk1nr/pp1p1ppp/2p5/8/2BPP3/2b5/PP3PPP/R1BQ1RK1 w kq - 0 10 | bxc3 | Is the Black king in check? | No | check |
7k/5pqp/B1Nb4/4pPr1/1Q6/8/PPP5/1K5R w - - 0 31 | Qb6 | What piece is on f6? | Empty | occupancy |
r6b/1p1b1qk1/1n2p3/3pP1NQ/pB1P1P2/P5P1/1P6/n3K3 w - - 0 25 | Qxf7+ | Is the c-file open, semi-open, or closed? | open | files |
8/8/6k1/3p1p2/3P1QpP/4P1P1/5PK1/1q6 w - - 13 48 | Qd6+ | Is the move from g3 to g6 legal? | No | legality |
r1bqr1k1/p1n2pbp/1p1p2p1/2pP4/P3P1n1/2N4P/1PQNBPP1/R1B1R1K1 b - - 0 14 | Nxf2 | Identify any White knight outposts on the board. | None | outposts |
8/1q3p1k/6p1/2p4p/2B2Q1P/5nPK/8/8 b - - 2 49 | Ne5 | What piece is on f7? | Black Pawn | occupancy |
r1br4/1p3pBp/4p1p1/pqp2nk1/2N1R3/1P1P2P1/1PP2PBP/R5K1 w - - 4 22 | f4+ | Is the move from b3 to f7 legal? | No | legality |
8/8/8/5k1p/7P/1K6/1P6/8 w - - 1 47 | Kc3 | Are there any open files in this position? | Yes: a, c, d, e, f, g | files |
2r5/k7/3p4/1QbNp3/6K1/8/8/8 w - - 21 63 | Ne7 | What is the material balance in this position? | White is up 2 pawns of material | material |
rnb1k2r/ppB2ppp/4p3/1P6/4n3/P4N2/4PPPP/R3KB1R b KQkq - 2 15 | f6 | Is the move from e4 to d2 legal? | Yes | legality |
3r3r/1kp2ppp/1p1bp3/PB1n4/3P4/1R2BK2/5PPP/1R6 b - - 0 25 | a4a5 | Identify any Black knight outposts on the board. | a5, d5 | outposts |
4rk2/1b2qp2/p3pn1Q/1pp1N3/3r4/3B4/PPP2PPP/4R1K1 b - - 3 26 | g5h6 | Is the Black king in check? | Yes | check |
r3k2r/pp2npb1/2p1bnp1/4P1Bp/2p1P2P/2N2PP1/PP1RN1B1/5RK1 b kq - 0 16 | Nh7 | Is the move from e6 to d7 legal? | Yes | legality |
r4rk1/2p3pp/p3bq2/1p1pn3/8/2P2N1P/PPBN1KP1/R1BQ4 w - - 1 16 | Qe2 | Is the Black king in check? | No | check |
2r2k2/pp3pp1/4p2p/1P1p4/N2P4/3BP2P/5PP1/6K1 w - - 0 31 | Nc5 | Does White have any passed pawns? | No | structure |
4r1k1/4qpb1/1pr4p/3pP1p1/P4n2/R3NN1P/5PP1/3QR1K1 w - - 0 27 | Ra2 | What is the material balance in this position? | Equal | material |
8/1p4p1/pP2p3/5k1K/P6B/8/8/8 b - - 7 45 | e5 | What piece is on f4? | Empty | occupancy |
r1bqkb1r/pp1n1ppp/2p1pn2/8/2BP4/2N1PN2/PP3PPP/R1BQK2R b KQkq - 0 7 | b5 | Is the Black king in check? | No | check |
1rb2rk1/1p1Npp2/6p1/3P3p/3b3P/P4PB1/1q1Q2P1/2R1KB1R b K - 2 22 | Bxd7 | Is the move from f7 to f6 legal? | Yes | legality |
2kr1b1r/pb3p2/5P2/1qnp4/Npp3Q1/4B1P1/1P3PBP/R4RK1 b - - 3 20 | Rd7 | Does White have any passed pawns? | Yes: h2 | structure |
3r4/2k2p2/1pq1pP2/8/1p6/1Pp3P1/4QP1P/R5K1 b - - 1 30 | Qc5 | Identify any Black knight outposts on the board. | d5 | outposts |
r4rk1/5ppp/p2R3B/8/2p1P3/8/PP1Q1KP1/q7 b - - 1 32 | c3 | Does White have any isolated pawns? | Yes: e4, g2 | structure |
8/8/7p/2R2p1k/8/1r4P1/p7/K7 b - - 0 51 | Kg5 | Identify any White knight outposts on the board. | f4, h4 | outposts |
8/8/3k4/1p3PP1/pP1K4/P7/8/3b4 b - - 0 45 | Bc2 | Identify any Black knight outposts on the board. | None | outposts |
3rk2r/pp3p2/1bp1p3/4Pp2/5qp1/2Q3P1/P3RP2/3NR1K1 b k - 0 29 | Qh6 | What piece is on h7? | Empty | occupancy |
r1b4r/pp1nkppp/4p3/q7/2PpQ3/5NP1/PP2KP1P/R4B1R w - - 0 14 | Nxd4 | Identify any White knight outposts on the board. | None | outposts |
r4r2/5pk1/n1p3p1/p3p2p/P1Q1P2b/2P1B2P/1q1NR1PK/5R2 w - - 0 29 | Nf3 | Is the move from g2 to g4 legal? | Yes | legality |
1k6/1r6/8/3p4/Q7/1nKb4/8/8 b - - 17 107 | d4+ | Is the move from b3 to a1 legal? | Yes | legality |
8/8/8/1N1P4/8/2k2Kp1/1p6/8 b - - 4 76 | Kb4 | Does Black have any isolated pawns? | Yes: b2, g3 | structure |
8/pp2q1k1/7p/5p2/2PpBPr1/3P2PQ/PP6/4R1K1 w - - 1 36 | Kf2 | Does Black have any passed pawns? | No | structure |
r5k1/1b3p1p/3p2p1/4p3/7b/2P1QP2/PPBP2qP/R1B1KR2 w Q - 2 19 | e7h4 | Is the White king in check? | Yes | check |
r4rk1/p1pQ1p1p/1p4p1/8/8/P3P1PP/2R2P2/q3K1NR w K - 1 27 | e5a1 | Is the White king in check? | Yes | check |
3q1krr/p4p2/4p3/2Pp2P1/3PbB1p/1P4P1/P6K/R2QR3 w - - 0 28 | Qg4 | Identify any White knight outposts on the board. | a4, h4, h6 | outposts |
1b1r1rk1/pp1qnppp/2n5/3p2N1/3N4/2P1B3/PP2QPPP/R3R1K1 b - - 0 16 | Nxd4 | Does Black have any isolated pawns? | Yes: d5 | structure |
8/8/1r1k2p1/1P2Rp1p/1K3P2/6P1/7P/8 b - - 1 48 | e1e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
rn1q1rk1/p2p1ppp/bp2p3/2pP4/2P1n3/P1B1P3/1P2NPPP/R2QKB1R w KQ - 1 10 | Qd3 | What piece is on d6? | Empty | occupancy |
r1bqkbnr/ppp1pppp/2n5/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R b KQkq - 2 3 | Bf5 | What is the material balance in this position? | Equal | material |
1rn5/2R1b3/5p2/4p2k/1P1pP1Pp/PK5P/5P2/2B2N2 b - - 0 41 | f3g4 | Is the Black king in check? | Yes | check |
3BRbk1/5ppp/p2Q4/P4qP1/5P2/1Pp5/7P/1K6 w - - 1 32 | Kc1 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
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