fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
6k1/5p2/1p2p2p/2b3p1/4P3/R5PP/5P2/5BK1 b - - 0 37 | Bxa3 | What piece is on c5? | Black Bishop | occupancy |
rnbqkb1r/ppppp1pp/5n2/5pB1/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - 3 3 | g6 | What piece is on e4? | Empty | occupancy |
7r/p1k3pp/1p1Qp1q1/5p2/2PPb3/8/PP3PPP/R4RK1 b - - 0 21 | f4d6 | Is the White king in check? | No | check |
r1bq1rk1/p1pnbppB/1p2p2p/6N1/3P4/5N2/PPPQ1PPP/2KR3R b - - 1 12 | Kh8 | What piece is on a1? | Empty | occupancy |
1r1qkb1r/p1p2p1p/6p1/3Bp3/2Pn4/1P1b2P1/PB1P1P1P/R1Q1K2R b KQk - 0 13 | g2d5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2qrnk1/p4ppp/P1b1p3/3pN2n/3P4/2NBP2P/2Q2PP1/RR4K1 b - - 3 23 | Bd7 | Identify any White knight outposts on the board. | None | outposts |
r2qr1k1/pp3ppp/2n5/1Nbp4/5Pb1/2Pn1N2/PP1BB1PP/2KR3R w - - 0 14 | f2d3 | What is the material balance in this position? | Black is up 9 pawns of material | material |
4r1k1/1pp2bp1/1b1p1q1p/p2n4/3P2QN/P3B3/1P3PPP/R4RK1 b - - 10 24 | h5 | Is the White king in check? | No | check |
r2q1rk1/1ppb1pp1/p2p2n1/3P2bN/4P3/P1QP4/1PP1B1P1/R3K2R w KQ - 0 22 | a7a6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2rr4/1p1nkp1p/pb2pp2/8/2R1N1P1/1P2PN2/P4P1P/3R1K2 w - - 1 18 | Rdc1 | What piece is on c5? | Empty | occupancy |
8/p1p5/2p3k1/2b1rpB1/7K/2P3PP/P1P2r2/3R3R b - - 1 30 | Rf4+ | Is the Black king in check? | No | check |
r2qkbnr/pp1n1ppp/2p1p1b1/8/3P1B2/3B1NN1/PPP2PPP/R2QK2R b KQkq - 1 8 | Ngf6 | Is the Black king in check? | No | check |
3r1r1k/p2R1pRp/5P2/2p5/1PP4P/P2Q4/1q4K1/8 w - - 4 34 | Kh3 | What is the material balance in this position? | White is up 1 pawn of material | material |
r4rk1/2pq1ppp/2n5/1p1pP3/3Pb3/4B3/PRB2PPP/3Q1RK1 w - - 0 20 | Bd3 | Is the move from d1 to f6 legal? | No | legality |
2r2bk1/4pR1p/4P1p1/Rp6/4KP2/1P6/P7/8 b - - 0 50 | Rc6 | Identify any White knight outposts on the board. | e5 | outposts |
8/1p6/1Pp1k3/2Pp1p2/3bpP1p/7R/3q2P1/6K1 w - - 0 45 | f6d4 | Is the White king in check? | Yes | check |
R7/2p5/p3np2/2Pp1k2/4p3/4P1r1/3K4/8 b - - 7 40 | c3d2 | What is the material balance in this position? | Black is up 6 pawns of material | material |
1r4k1/p1p3pp/2p3r1/4pb2/NbP5/6P1/PP2BP1P/R3K2R w - - 7 18 | c5b4 | Is the White king in check? | Yes | check |
r2qkbnr/pp1nppp1/2p3bp/8/3P3P/5NN1/PPP2PP1/R1BQKB1R w KQkq - 2 8 | h5 | Are there any open files in this position? | No | files |
4r1k1/1R3p2/p1p2B2/r5P1/2p5/4P3/P3bP2/R5K1 b - - 0 33 | Rd5 | What is the material balance in this position? | Equal | material |
1B4k1/5pbp/4P1p1/p7/1pbrP1n1/8/PKB2PPP/1R1R4 b - - 0 24 | f4b8 | What is the material balance in this position? | White is up 3 pawns of material | material |
rn1qkbnr/pp3ppp/2p1p3/3p4/2P3b1/1Q3NP1/PP1PPPBP/RNB1K2R b KQkq - 1 5 | Qb6 | Is the move from g4 to d2 legal? | No | legality |
2rq1rk1/1b4pp/p2bp3/1p1nNp2/3PpP2/1RP1P1B1/P2QB1PP/5RK1 b - - 0 20 | Qa5 | Does White have any isolated pawns? | Yes: a2 | structure |
r3kb1r/ppq1pppp/2n2n2/8/1PN3b1/P3PN2/1B3PPP/R2QKB1R b KQkq - 2 10 | b5 | What piece is on e5? | Empty | occupancy |
3r4/ppk1np2/2p1b1pr/2P1pP2/4P3/3BBP2/1PK1N3/3R4 b - - 0 20 | Rh3 | Are there any open files in this position? | Yes: d, h | files |
rnbqk2r/ppp1bppp/4pn2/3p2B1/2PP4/2N1P3/PP3PPP/R2QKBNR b KQkq - 0 5 | Ne4 | Is the move from e7 to d6 legal? | Yes | legality |
rnb1kbnr/p1q1pppp/8/1p6/2pP4/1P2P3/5PPP/RNBQKBNR w KQkq - 1 7 | d8c7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bq1r1k/pp4bp/2np4/1P2p1pn/Q3Pp1P/3P1NP1/P1N2PB1/R1B2RK1 b - - 0 17 | Ne7 | What piece is on h8? | Black King | occupancy |
6k1/rp1r1ppp/q1p2n2/Q7/pPN3b1/4P1P1/P4PBP/R1R3K1 w - - 2 25 | Qc5 | Is the move from a1 to h8 legal? | No | legality |
r1b2rk1/p3bppp/2p5/3p4/6n1/2NB1PP1/PPP2qKP/R1BQR3 w - - 2 15 | d4f2 | Is the White king in check? | Yes | check |
1k4r1/1b6/p3Pn2/Pp2p3/1Pp2ppp/2P5/3RBPP1/6RK b - - 0 35 | Ne4 | Is the move from f6 to e8 legal? | Yes | legality |
1qr3k1/p4p1p/5np1/2Npr3/3B4/1P2PP2/P3Q1PP/3R2K1 b - - 2 25 | Ree8 | What piece is on f2? | Empty | occupancy |
8/8/8/pp3p1K/1p1k1P2/1P2r1P1/P1P3R1/8 b - - 0 44 | Kc3 | Is the e-file open, semi-open, or closed? | open | files |
rn1qkb1r/ppp2ppp/4p3/3nNb2/3P4/5Q2/PPP2PPP/RNB1KB1R w KQkq - 0 7 | Bd3 | Does Black have any isolated pawns? | No | structure |
r1b1r1k1/2p3pp/ppp2pn1/4b3/3BP3/1NN5/PPP2PPP/1K1RR3 b - - 3 16 | Nh4 | What piece is on a2? | White Pawn | occupancy |
3br1k1/pb3q1p/n1p1pPp1/2p1B1P1/P3BP2/5N1Q/7P/3R3K w - - 3 42 | Bd6 | Identify any White knight outposts on the board. | e5 | outposts |
5rk1/3p1ppp/b1pNq1n1/p1P5/3Q4/P5P1/1r2PPBP/R3R1K1 b - - 0 21 | Rfb8 | Are there any open files in this position? | Yes: b | files |
r1bq1rk1/pp2npp1/2n1p3/2ppP1NQ/3P4/P1P5/2P2PPP/R1B1K2R b KQ - 3 11 | Re8 | What piece is on h1? | White Rook | occupancy |
3r1rk1/ppq2ppp/2n2nb1/1Bp5/3Pp3/P1P1P2P/1B1NQPP1/R4RK1 w - - 2 16 | Bxc6 | Does Black have any isolated pawns? | No | structure |
r1bqr1k1/1p3pp1/2pb3p/p2pP3/1P1P4/P1NB2P1/2Q2P1P/1R2R1K1 b - - 0 19 | Bf8 | What is the material balance in this position? | Equal | material |
rnb1k2r/p3b1p1/2p5/q1p1Pp1p/2B2B1P/2P5/PP2QP2/R3K1R1 w Qkq - 0 17 | Rxg7 | Does White have any passed pawns? | Yes: e5 | structure |
5rk1/1b3ppp/4p3/q2nQ3/1p2P3/1n3N2/1P1BBPPP/5RK1 b - - 2 20 | Nc3 | What piece is on g6? | Empty | occupancy |
1R3Nk1/5np1/8/6PP/5K2/8/8/6r1 b - - 4 58 | Rf1+ | What piece is on b8? | White Rook | occupancy |
rnbN1b1r/1p4pp/4Rnk1/qp4B1/8/2NQ4/P1P3PP/3K4 b - - 3 20 | Kh5 | Is the Black king in check? | Yes | check |
3r1k2/1p3b1p/p1p1pPp1/2PpN1P1/PP1P1K1P/8/8/1R6 w - - 7 50 | b5 | What piece is on h2? | Empty | occupancy |
1r3rk1/pp4pp/n3pp2/P2p4/8/4N3/1PK3PP/R4B1R b - - 1 19 | Rfc8+ | Identify any White knight outposts on the board. | None | outposts |
6k1/ppR1bp1p/4pp2/8/8/4P3/PP3PPP/3rN1K1 b - - 4 21 | Rxe1# | Is the d-file open, semi-open, or closed? | open | files |
8/R1pB3p/5p1k/b3r3/5PK1/2r5/P6P/R7 b - - 0 34 | Rh5 | Is the move from f6 to f5 legal? | Yes | legality |
3r4/1p2k3/p7/4Pp1p/1R2p2P/P2rK1P1/5P2/2R5 w - - 1 32 | Kf4 | Identify any Black knight outposts on the board. | d3 | outposts |
1r2kb1r/5ppp/p1q1pn2/1P6/8/1QP1B3/1P3PPP/RN3RK1 b k - 0 15 | axb5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
1r6/pp4pp/3npk2/P1rp1p2/3N4/1R6/1P2B1PP/1K1R4 w - - 10 27 | g4 | What piece is on d7? | Empty | occupancy |
3k4/8/2K4p/2P5/5bB1/7P/8/8 b - - 0 77 | Bg3 | What piece is on f4? | Black Bishop | occupancy |
5r2/p5kp/1q6/1b2p3/3b4/1Q3BP1/PP3P1P/3RB1K1 b - - 2 28 | Qa6 | Is the move from d4 to f2 legal? | Yes | legality |
r1r3k1/4bppp/q3bn2/1N1p4/1P2p3/PB4B1/4QPPP/R2R2K1 b - - 7 24 | Bg4 | Does White have any isolated pawns? | No | structure |
r3r1k1/2pq2pp/1p6/4P3/2np1P2/2R3P1/PB4KP/R2Q4 w - - 1 25 | Rf3 | Is the White king in check? | No | check |
r1bn2k1/p2p2P1/2pqr3/1p2p2P/2B1Pn2/1P6/P1PP4/1K4R1 w - - 0 4 | h6 | Identify any Black knight outposts on the board. | None | outposts |
1rbq1rk1/1pp1b1pp/p1n1pn2/5p2/3P1B2/1QN2NP1/P3PPBP/R4RK1 w - - 1 12 | Rad1 | Is the Black king in check? | No | check |
r4r1k/p2n2pp/1bR5/4pp2/N7/4PN2/PB3PPP/6K1 w - - 1 22 | c7b6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/8/8/8/8/p2K1k2/1p6/1R6 w - - 10 6 | Kc2 | Identify any White knight outposts on the board. | None | outposts |
1q1r1rk1/pp2b1pp/2p1bp2/4n3/P3NB2/2Q3P1/1P2PPBP/3R1RK1 w - - 0 18 | Ng5 | Are there any open files in this position? | Yes: d | files |
r1b1kb1r/pp3ppp/1qn1p2n/3pP3/3P4/5N2/PP2BPPP/RNBQ1RK1 b kq - 0 8 | Nf5 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/7p/p2p4/nppPn3/2P2P2/1P6/PQ1NB2P/R2N1RK1 b - - 0 20 | Rxf4 | Is the move from a8 to a7 legal? | Yes | legality |
q2Br1k1/1b3pp1/p3n2p/8/N2p4/5N2/PP1nBPPP/2RQ2K1 b - - 0 27 | Nf4 | Identify any White knight outposts on the board. | None | outposts |
1rr3k1/2bq1p1p/4b1pP/pp1pPp2/1P6/P1P1BN2/3Q1PP1/R3R1K1 w - - 4 28 | Bc5 | Does White have any passed pawns? | No | structure |
r2qr1k1/ppp2p1p/2npbp1B/2b1p3/2B1P3/3P1N2/PPP2PPP/R2QK2R w KQ - 2 10 | Nh4 | Are there any open files in this position? | No | files |
r1bqkb1r/pp1p1ppp/2n1pn2/8/3NP3/2N1B3/PPP2PPP/R2QKB1R b KQkq - 4 6 | Bb4 | Is the move from d8 to a5 legal? | Yes | legality |
2r2k2/5rb1/3P4/pq2p2p/1p6/1B2BP2/PPPQ4/1K1R4 b - - 0 27 | Rf6 | What piece is on c3? | Empty | occupancy |
8/8/2r1P2P/5kn1/p7/P4pp1/1R6/5RK1 b - - 0 66 | Kg4 | Does Black have any passed pawns? | Yes: f3, g3 | structure |
1k6/p1p3q1/3r1b2/R1Np1p2/3P1P2/4P2p/1P3P1P/6RK b - - 1 26 | f1g1 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rnbqkb1r/pp3ppp/3pp3/3nP3/2BP4/8/PP3PPP/RNBQK1NR w KQkq - 0 8 | Nf3 | What is the material balance in this position? | Equal | material |
4r1k1/6pp/p1p5/1p1p4/3B1r2/1BP1N2b/PP5P/4R1K1 b - - 5 24 | Re6 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1bqkb1r/ppp1pppp/2n2n2/8/2PP4/2N2N2/PP3PPP/R1BQKB1R b KQkq - 2 6 | Bg4 | Identify any White knight outposts on the board. | None | outposts |
r1q1kR2/ppp4p/2np2pQ/4p1N1/4P3/2NP3P/PPP3P1/R5K1 b - - 0 15 | f2f8 | Is the Black king in check? | Yes | check |
3b4/2k5/4n3/1p1pPp2/3p1P1p/pP1N3P/P3KB2/8 w - - 2 64 | Bg1 | Is the move from f2 to h4 legal? | Yes | legality |
7Q/4bk2/6p1/3q3p/8/4BP1P/5PK1/8 b - - 6 70 | Qe6 | Identify any White knight outposts on the board. | e4 | outposts |
3r1k2/p7/4p1p1/R1PP2p1/N4pb1/P1N3p1/3K1bP1/5R2 b - - 0 35 | exd5 | Is the move from g5 to a1 legal? | No | legality |
6k1/8/4N1n1/p2PPq2/P1p2P2/1p2Q3/1P5P/6K1 w - - 1 44 | Kf2 | What piece is on c3? | Empty | occupancy |
2bn1r1k/r4q1p/p2Ppp1Q/5P2/2B5/6R1/PpP4P/1K4R1 w - - 4 26 | d7 | Is the move from h6 to h5 legal? | Yes | legality |
r3r1k1/5pp1/1p4qp/p1BP4/P1P4n/1Q4PP/R2N1Pb1/4R1K1 w - - 1 23 | Be7 | Does Black have any passed pawns? | No | structure |
5r1k/pp3p1p/1q6/3rP3/2Q5/2P3P1/PP5P/R2B3K b - - 2 28 | Qf2 | What piece is on a1? | White Rook | occupancy |
q1r1r3/p6p/b1p4k/2P2p2/P2P4/1Q4P1/5PK1/3RR3 w - - 0 38 | Qf7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2qkb1r/pQ3ppp/2p1p3/4Nb2/2P1p3/6P1/PP1P1PBP/nNBK3R b kq - 1 12 | Bg6 | Is the Black king in check? | No | check |
r2q2k1/5ppp/5b2/1p6/2nPN3/3Q1N2/5PPP/4R1K1 w - - 0 25 | Nc3 | What piece is on f2? | White Pawn | occupancy |
r1bq3k/pp1B2pn/2p2r1p/5p2/8/3PBNP1/PPPQ2PP/R3R1K1 b - - 0 17 | e6d7 | What is the material balance in this position? | White is up 4 pawns of material | material |
r2qkb1r/p1pp1ppp/n3p3/np6/3P4/P4NP1/1P2PP1P/R1BQKB1R w KQkq - 4 16 | e4 | What piece is on h6? | Empty | occupancy |
r1b2rk1/1p3ppp/4pn2/p7/Ppp5/3PqN2/2Q1P1PP/1N2KB1R b K - 1 17 | g1f3 | Identify any Black knight outposts on the board. | a3, b3 | outposts |
4r3/q4pk1/3pr2p/1pbN1RpP/p3P3/P1P5/KP1Q2P1/4R3 b - - 1 30 | Rxe4 | Does White have any isolated pawns? | Yes: e4 | structure |
r2qkb1r/ppp2ppp/2npp3/3nP3/2PP2b1/5N2/PP2BPPP/RNBQ1RK1 b kq - 0 7 | Nde7 | Is the move from a7 to a5 legal? | Yes | legality |
rnbqkb1r/ppp1pp1p/3p1np1/8/3PP3/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 4 | f4 | What is the material balance in this position? | Equal | material |
r1b1kb1r/p3pp1p/1pn3p1/2p5/P3P3/2P1BN2/1P3PPP/R2K1B1R w kq - 1 10 | Bb5 | Does Black have any isolated pawns? | No | structure |
8/8/2k2BPb/P7/4K2p/8/6P1/8 w - - 1 60 | g7 | What piece is on e4? | White King | occupancy |
3r1r2/2q1nbk1/1p5p/pPp1P3/P1Pp1p2/5N2/2Q1BPP1/2R3KR b - - 6 30 | Ng6 | Is the White king in check? | No | check |
r3kbnr/pbpp1p1p/1pn1p1p1/4q3/7P/5Q2/PPPP1PP1/RNB1KB1R w KQkq - 0 8 | g5e5 | Is the White king in check? | Yes | check |
8/4k1p1/7p/7P/6P1/2nR1K2/8/8 b - - 14 22 | Nb5 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/2R5/3R2k1/p4pp1/5n2/r7/P4K2/8 b - - 7 40 | d2d6 | Is the Black king in check? | Yes | check |
2r5/3pkp1p/r3p1p1/8/1R5P/4P3/PP3PP1/R5K1 b - - 0 22 | Rd6 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
1r3r2/1qp2ppk/p2b4/2n1p1p1/P1Q1P3/2PPP1P1/B6R/5K2 b - - 1 2 | Kg8 | Does Black have any isolated pawns? | Yes: a6, c7 | structure |
r1bqk2r/ppp2pp1/3p3p/3np3/2B1P3/3P1P2/PPPQ2PP/R3K2R w KQkq - 0 11 | f6d5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
4r3/1N6/5k2/1B1p2p1/1P1p4/5P2/r5P1/6K1 w - - 0 38 | Bxe8 | Does Black have any isolated pawns? | Yes: d4, d5, g5 | structure |
1rn3k1/6b1/6p1/1bpPP3/p1N4P/8/1R2N1B1/6K1 b - - 1 38 | Nd6 | Does Black have any passed pawns? | Yes: a4, c5 | structure |
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