fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
5rk1/p1p1bppp/1q2p3/1pNr2P1/1P1P3P/P3Q3/2P2P2/2KR3R w - - 0 6 | Nb3 | What piece is on d5? | Black Rook | occupancy |
5Q2/7k/7p/p3P3/Pp6/1P5P/n5P1/7K b - - 0 45 | f6f8 | What is the material balance in this position? | White is up 8 pawns of material | material |
r1b1rnk1/1pq3pp/p2bp3/2p2pN1/2PP4/3B4/PPQB1PPP/2KRR3 w - - 4 17 | d5 | Is the move from g5 to f7 legal? | Yes | legality |
r1bqkb1r/pppn1ppp/4pn2/3p4/2PP1B2/2N2N2/PP2PPPP/R2QKB1R b KQkq - 3 5 | Bb4 | Are there any open files in this position? | No | files |
r2qr1k1/pb1pbpp1/1pn2n1p/2p2N2/Q7/2N3P1/PP2PPBP/R1BR2K1 w - - 0 15 | Bf4 | Does Black have any isolated pawns? | No | structure |
5b2/4p2p/pp2Pkp1/3qp3/5r1P/2R3Q1/PP3P2/4R1K1 w - - 8 36 | Qg5+ | Is the Black king in check? | No | check |
r1b2rk1/1pqn1ppp/1n2p3/p1p5/P2PP3/2PB4/4NPPP/R1BQ1RK1 w - - 0 13 | Rb1 | Is the White king in check? | No | check |
5rk1/3p1ppp/2p4q/p1P2P2/4NR2/P2r2PP/1Q2bKB1/8 b - - 5 27 | Bd1 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r3kbnr/pp1n1ppp/2p1p3/8/2qB2b1/3P1NP1/P2NPPBP/R3K2R w KQkq - 0 11 | Nxc4 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
1r1r4/2b2k1p/3q4/7p/3P4/3QBP2/5P1P/2R4K w - - 0 35 | Rxc7+ | Identify any White knight outposts on the board. | c5, e4, e5 | outposts |
r1b1r1k1/3pPpb1/2n4p/q7/1pp2Np1/2N1P3/PP1Q1PPP/R3KB1R w KQ - 0 19 | Ncd5 | Does White have any passed pawns? | Yes: e7 | structure |
3r1r1k/1q2bpp1/2p1p2p/1p2P2P/1PnBNPQ1/2P5/6P1/3RR2K w - - 3 32 | f5 | Is the White king in check? | No | check |
5br1/1b1k1p1p/1q2pp2/r7/3p4/5N2/PP2QPPP/R1BR2K1 w - - 0 18 | Rxd4+ | What piece is on e1? | Empty | occupancy |
2q2rk1/5pp1/5b1p/pb1r4/1p2Q3/n6P/5PP1/1B1n2K1 w - - 0 1 | Qxd5 | What is the material balance in this position? | Black is up 21 pawns of material | material |
r6k/ppp3Nn/3p1p1p/3Pp2P/4P2P/4QP2/PPP5/2K5 b - - 0 26 | Kxg7 | Does White have any isolated pawns? | Yes: h4, h5 | structure |
6rk/2p3qp/p2p1p2/1p1PrP2/1PPQ4/PB2pR1P/3bR1P1/7K w - - 2 30 | Qa7 | Identify any White knight outposts on the board. | None | outposts |
rn1q1rk1/pp2ppbp/2p1bnp1/8/3P4/2PB1NNP/PP3PP1/R1BQ1RK1 b - - 4 10 | Bd5 | What piece is on a8? | Black Rook | occupancy |
1r3rk1/p1p2ppp/3p4/3Bp1q1/Pn2P3/3PPP2/1PP2K1P/1R1Q1R2 b - - 2 16 | Qh6 | Are there any open files in this position? | No | files |
r3r2k/pppq1p1b/3p1P1B/4p2P/2B1P3/3P4/PPPQ1K2/R5R1 b - - 0 19 | Qh3 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
2R5/5k2/3bNB2/2p4p/8/5P2/4nK2/8 w - - 1 58 | Kxe2 | What piece is on e2? | Black Knight | occupancy |
1r4k1/2nq1pbp/r2p1np1/2pP4/P4B2/2NQ1N2/1P3PPP/R3R1K1 w - - 2 18 | Nd2 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r2kb1r/2Nnq1pp/p4p1B/4p3/2BP4/1Q6/PPP2PPP/R4RK1 b k - 0 13 | b5c7 | Is the White king in check? | No | check |
2kr1b1r/p1p1qppp/2p5/2P1n3/Q3N3/5P2/PP3PKP/R1B2R2 b - - 4 15 | Qe6 | Is the move from d8 to e8 legal? | Yes | legality |
1r6/2b3kp/8/1R1B4/5p2/8/P4P1P/6K1 w - - 5 32 | Bb7 | Is the White king in check? | No | check |
r1b1kbnr/pp1p1ppp/4p3/4P3/3Nq3/8/PPP1KP1P/RNBQ3R w kq - 2 9 | g2e4 | Is the White king in check? | Yes | check |
4r1k1/5pb1/3p2p1/3P3p/2Q4P/1N3P2/PP3q2/KR6 b - - 2 36 | Re2 | Is the c-file open, semi-open, or closed? | open | files |
r1bqk1nr/ppp3pp/2np4/2b1p3/2B1PP2/2P2N2/PP4PP/RNBQK2R b KQkq - 0 7 | Nf6 | Is the move from c5 to f2 legal? | Yes | legality |
r2r2k1/5ppp/b1n1pn2/2p5/8/2N2NP1/PP2PPBP/R3K2R b KQ - 1 15 | Nd5 | Does Black have any isolated pawns? | Yes: c5 | structure |
8/pp6/6k1/3p4/3P2K1/8/PP3P2/8 w - - 2 41 | f3 | Identify any Black knight outposts on the board. | None | outposts |
1r1r4/8/3p1k2/4p1p1/1p2P3/1P6/1P2B3/1K3R2 b - - 3 41 | d1f1 | Is the Black king in check? | Yes | check |
r1q2rk1/1pp1npb1/3pb1pp/1Pn1p3/2P1P3/2NP2P1/2QBNPBP/R4RK1 b - - 5 18 | b6 | Identify any White knight outposts on the board. | None | outposts |
rqr3k1/1p1bppb1/3p2p1/7p/p2BPP1P/P1P5/1P2BQP1/1K1R3R b - - 0 23 | Bc6 | Is the move from b8 to a7 legal? | Yes | legality |
r1bqr2k/8/2pb1n1Q/p2p4/3P4/P1N1PN2/5PPP/1R3RK1 b - - 0 19 | Nh7 | Does White have any passed pawns? | Yes: f2, g2, h2 | structure |
4rrk1/2pqnpp1/1p1p4/p5N1/2P4Q/1P6/P4PPP/3RR1K1 b - - 1 1 | Qf5 | Identify any White knight outposts on the board. | None | outposts |
r1bqkbnr/pppp1p1p/2n3p1/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4 | Bg2 | Is the Black king in check? | No | check |
rnbqkb1r/5ppp/5n2/p1Ppp3/1P6/2N5/P4PPP/R1BQKBNR w KQkq - 0 9 | a3 | What piece is on g8? | Empty | occupancy |
6k1/p4p1p/2p1b1p1/2Pp3n/3Q2P1/1P1N1P1q/P3B3/R4RK1 b - - 6 5 | Qg3+ | Is the move from h5 to f4 legal? | Yes | legality |
rnb1k2r/2qnbppp/p2pp3/8/1p1NPNP1/1B2BQ2/PPP2P1P/R3K2R b KQkq - 3 12 | Ne5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
8/1p6/8/2R5/4p2P/2P2n1K/P4k2/8 w - - 1 56 | Rf5 | What piece is on e3? | Empty | occupancy |
3q1rk1/3b1ppp/r2b1n2/p2p4/8/P1N1P2P/1BQ1NPP1/R3K2R w KQ - 0 17 | Rd1 | Identify any Black knight outposts on the board. | c4 | outposts |
8/8/5B2/3p1p1p/5Pk1/5bP1/p4K2/8 b - - 5 59 | h4 | Is the move from d5 to c5 legal? | No | legality |
5k2/3n1p2/b5p1/3P4/2p3N1/Nr1B1QRP/1q3PPK/8 b - - 0 32 | Rxa3 | Is the Black king in check? | No | check |
r1bq2k1/pp6/6p1/3pQ3/6Pp/6b1/PPPKB3/R6R w - - 2 26 | Qe3 | What is the material balance in this position? | White is up 1 pawn of material | material |
5Q2/p6p/2p3k1/1pR1r1q1/1P1r2b1/3P2P1/P6P/5RK1 w - - 1 29 | Qf7+ | Identify any Black knight outposts on the board. | d5 | outposts |
2r3r1/1p2p2k/3q1pbb/pP1P2p1/2pNP3/P1N2P1P/2Q3K1/3R1R2 w - - 5 31 | a4 | Is the move from g2 to h1 legal? | Yes | legality |
r1b2rk1/1pp3pp/1p1p1n2/8/B2n3q/2NP4/PPP2PPP/R1BQ1R1K w - - 1 15 | f3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bq1rk1/1n2b2p/p2p2p1/2pPpp2/pPn1P3/2P2N1P/2B1QPP1/R1B1R1K1 w - - 0 18 | Qxc4 | Is the move from e2 to a2 legal? | No | legality |
r2q1rk1/ppb3pp/2p1pn2/2P2p1b/2NPp3/1P4P1/PB2PPBP/R2QR1K1 w - - 3 15 | f3 | Is the Black king in check? | No | check |
3r2k1/2p2p1p/1q4p1/p1p2p2/N2P4/P3P3/b1Q2P1P/4K1NR w K - 0 23 | e6a2 | Identify any Black knight outposts on the board. | h5 | outposts |
7k/1p2Bp1p/p1p2p2/2n5/8/2N4q/PPP2P1P/R3RK2 w - - 3 23 | Ke2 | Identify any White knight outposts on the board. | None | outposts |
1n6/4k3/1P3p2/P2KpP2/6P1/6N1/7P/8 w - - 5 49 | Ne4 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1k3r1/p3bpN1/2p1b2P/4P1p1/2p1P3/1P1R4/1B6/5RK1 w - - 0 37 | Rc3 | Identify any White knight outposts on the board. | a4, c4, f6 | outposts |
r3kb1r/ppp2p1p/2np1Bp1/1N2p3/8/1B1P4/PPP2PbP/R3K1NR b KQkq - 1 13 | Bh6 | What piece is on f4? | Empty | occupancy |
r2q1rk1/pp3ppp/1npp1n2/b2P1NB1/2BPp3/2P2P2/PP4PP/R2Q1RK1 b - - 0 13 | h6 | What is the material balance in this position? | Equal | material |
2kr4/1pp3p1/p1n2pp1/3r4/1P4PP/P3bN2/5P2/2KRR3 w - - 0 24 | d4e3 | Is the White king in check? | Yes | check |
6Q1/3q4/7p/7k/5P1P/4P1p1/4KP2/8 b - - 1 73 | Qc6 | Is the move from h6 to a6 legal? | No | legality |
r1b1kb2/ppp2p1p/n3pn2/1N6/4p1r1/7Q/PPPB1qPP/2KR1BNR w q - 2 12 | Kb1 | Is the White king in check? | No | check |
r3kb1r/1p3ppp/p1n1p1n1/q1PpP3/B7/P1N1BQ1P/1PP2PP1/R3K2R b KQkq - 0 12 | Qc7 | Is the move from e8 to d8 legal? | Yes | legality |
6Q1/6bk/pp4pp/8/2B5/1P5P/5PPK/q7 b - - 1 31 | f7g8 | Is the Black king in check? | Yes | check |
2k2r2/p3b1pp/1p6/2pNnP2/2P1q1P1/1P5P/P1KR4/2B2R2 w - - 0 29 | f3e4 | Is the White king in check? | Yes | check |
r3r3/pp1qnkpp/2n1bp2/1BPp4/8/5NB1/PP2QPPP/R3R1K1 w - - 3 19 | Rad1 | Identify any White knight outposts on the board. | d6 | outposts |
rnbqk2r/pppp1ppp/4pn2/8/2PP4/6P1/PP1bPP1P/RN1QKBNR w KQkq - 0 5 | Nxd2 | Are there any open files in this position? | No | files |
1r1k4/5p2/N2p1p1p/P2P4/2P1pbPP/8/4K3/8 w - - 0 41 | Nxb8 | Is the move from h4 to b8 legal? | No | legality |
r4bk1/3b4/p2pp1P1/1p6/2qNP3/2N1B2r/PPP2Q2/R3K3 b Q - 0 26 | Rh1+ | Is the White king in check? | No | check |
3Q1n1q/2p1r1k1/pp2b3/4P1p1/1P2Np2/P2P1P2/6Br/2RR3K w - - 0 35 | Kg1 | Are there any open files in this position? | Yes: h | files |
r1b2rk1/1pp2ppp/pn2p3/8/P1pP4/4P1P1/1P1N1PBP/R4RK1 b - - 0 16 | Bd7 | Is the move from a8 to a7 legal? | Yes | legality |
2k5/1pp5/7p/5pp1/7P/5K2/p2rrP2/5R2 b - - 0 35 | g4+ | Is the White king in check? | No | check |
8/5kp1/1b2pn1p/2q1B3/5P2/6NP/4Q1PK/8 w - - 1 36 | Qd1 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
8/p3k2p/2b1Pp2/5P2/1p6/8/2r3PP/3RR1K1 w - - 1 26 | Rc1 | What is the material balance in this position? | White is up 2 pawns of material | material |
r1bq1rk1/ppn1ppbp/5np1/8/2Pp4/1BN2N1P/PP3PP1/R1BQR1K1 w - - 0 14 | Nxd4 | What piece is on c4? | White Pawn | occupancy |
2q3k1/6p1/p1p2pb1/P1Q1p3/1P2P1P1/4NPK1/8/8 w - - 7 45 | b5 | Is the d-file open, semi-open, or closed? | open | files |
6k1/8/6rP/3p1N2/3P1K2/4P3/8/8 w - - 0 66 | Ne7+ | What piece is on d4? | White Pawn | occupancy |
4rrk1/2pb1p2/1pq1pQp1/p3P1N1/P1PR2pP/8/2P2P1K/8 w - - 0 34 | h5 | Does White have any isolated pawns? | Yes: a4, c2, c4, h4 | structure |
r2qkb1r/pp3ppp/2n1pn2/2pp4/3P2b1/4PN2/PPP1BPPP/RNBQ1RK1 w kq - 0 7 | Nbd2 | Is the g-file open, semi-open, or closed? | closed | files |
8/4kp2/1p2p3/p2r1p1p/P1R2P2/1P2P1PP/4K3/8 w - - 0 34 | Rc8 | Identify any Black knight outposts on the board. | None | outposts |
rn1q4/pbp1b1p1/1p2p2k/3p1rNP/3P4/2NQ4/PPP2PP1/R3K2R w KQ - 3 17 | Nxe6 | What piece is on d2? | Empty | occupancy |
r1bqr2k/pp3Qp1/2n1pb2/6N1/3P3P/P1P5/5PP1/R1B1K2R b KQ - 0 16 | e5 | What piece is on f7? | White Queen | occupancy |
rnbqkb1r/ppp2ppp/4pn2/3P4/3P4/2N5/PP2PPPP/R1BQKBNR b KQkq - 0 4 | exd5 | What piece is on b3? | Empty | occupancy |
2r3k1/5pbp/r5p1/pbpPp2n/1p2P3/4B1PP/PP2NPB1/4RRK1 w - - 1 22 | Bf3 | What piece is on c5? | Black Pawn | occupancy |
r2q1rk1/4n1bp/3p4/p2P1p2/R1N1pp2/2PB4/1P3PPP/3QR1K1 w - - 0 21 | Bf1 | What piece is on c3? | White Pawn | occupancy |
r3kbnr/pppb2pp/5pq1/4n3/8/2N5/PPP1BPPP/R1BQ1RK1 w kq - 0 11 | Bh5 | Is the move from a2 to g7 legal? | No | legality |
r3kb1r/ppp1pppp/2nq1n2/5b2/3P4/2N2N2/PPP1BPPP/R1BQK2R w KQkq - 0 7 | a3 | Are there any open files in this position? | No | files |
2b3k1/5pbp/p1p1p1p1/3p2PP/8/1q3N2/5P2/1K1R3R w - - 0 27 | b8b3 | Is the Black king in check? | No | check |
8/8/1kp1N3/p2p4/P5B1/1Pr5/5K2/8 b - - 0 63 | Rxb3 | What piece is on d5? | Black Pawn | occupancy |
1rb2bk1/R4p2/2n3p1/1ppNP1Pp/2p1PP2/4N1P1/PP4B1/6K1 w - - 1 28 | Nf6+ | What is the material balance in this position? | White is up 1 pawn of material | material |
r2q1r1k/1p2n1bp/6p1/3PBb2/P1PQNn2/5P2/4B1PP/R3R1K1 b - - 2 22 | Ne6 | Identify any Black knight outposts on the board. | None | outposts |
1k1r1b1r/pp3b1p/2p2p2/6p1/PP6/3NP1P1/4P1BP/R1R3K1 w - - 1 25 | b5 | Does White have any isolated pawns? | Yes: e2, e3 | structure |
5rk1/2nn2q1/1p1p2Bp/p1pP4/P1P2P2/2PQ2Bp/8/1R4K1 w - - 0 29 | Kh2 | What piece is on h4? | Empty | occupancy |
r4rk1/2p1bpp1/p3pn1p/1p1qNn2/3P1P2/2PQ1N2/PP4PP/R1B2RK1 b - - 1 17 | h5 | Does White have any isolated pawns? | No | structure |
5k2/pp2R3/3P2p1/4p2p/4P3/1P1K2P1/P4r2/8 w - - 1 33 | Rxe5 | Identify any Black knight outposts on the board. | g4 | outposts |
r3k2r/1pp1bpp1/p1pqbn1p/4p3/P3P3/N2P4/1PPN1PPP/R1BQ1RK1 b kq - 1 10 | Qd8 | Is the White king in check? | No | check |
1r6/5qk1/3p2pp/2p2p2/2Q1nP2/5N1P/1P2R1P1/6K1 w - - 5 30 | Qa6 | What piece is on g4? | Empty | occupancy |
8/2R2Rpk/4p2n/p2p2p1/N5P1/1P3P1P/P2r4/6K1 w - - 1 38 | f5h6 | What is the material balance in this position? | White is up 5 pawns of material | material |
r1bq1rk1/pp3pbp/3pp1p1/2p5/3nPP2/2NP2P1/PPP2BBP/R2Q1RK1 w - - 3 13 | e5 | Does Black have any isolated pawns? | No | structure |
r2qkn1r/pb2bp2/1pp1p3/5p1p/2BPN3/5NQ1/PPP2PPP/1K1RR3 w kq - 0 16 | d5 | What piece is on f6? | Empty | occupancy |
4r3/p1p1rpk1/1p4p1/4P3/8/P5Q1/B5P1/6K1 w - - 0 31 | Qf4 | Are there any open files in this position? | Yes: d, h | files |
r2q1rk1/1pp2pb1/2npbn1p/p3p1p1/P1N1P3/1BPP1N2/1P3PPP/R1BQR1K1 b - - 4 11 | Re8 | Does Black have any passed pawns? | No | structure |
r2q3k/6p1/2p4p/3p4/1P6/2P1QP1P/4RKP1/8 w - - 3 43 | Qd4 | Is the move from c3 to h7 legal? | No | legality |
4rbk1/6p1/p2pp3/7R/1p2P2Q/2rbq3/PB4B1/K3R3 b - - 3 30 | Rec8 | Does White have any isolated pawns? | Yes: a2, e4 | structure |
6k1/6p1/2Q1p3/1p6/3P3p/7P/PP3qPK/8 w - - 0 31 | Qxe6+ | Identify any White knight outposts on the board. | e5 | outposts |
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