fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqkbnr/ppp2ppp/8/3pp3/8/3PP3/PPP2PPP/RNBQKBNR w KQkq - 0 3 | d4 | Is the c-file open, semi-open, or closed? | closed | files |
2rq1bk1/8/p1R2p2/1pnB1P2/2p5/3p3P/3Q1PPN/6K1 b - - 3 35 | Qxd5 | What piece is on a6? | Black Pawn | occupancy |
rnbq1rk1/ppp1bppp/1n1p4/8/2PP4/2NB4/PP2NPPP/R1BQK2R b KQ - 5 8 | Nc6 | Is the move from c7 to d5 legal? | No | legality |
5r1k/pp1q2pp/5p2/b7/P2pR3/1P1P3P/3Q1PP1/2r3K1 w - - 0 24 | c8c1 | Is the White king in check? | Yes | check |
r4rk1/pp4p1/2b1p2p/n2n4/3PN3/P2BB3/5PPP/2R2RK1 w - - 2 23 | Nc5 | Is the White king in check? | No | check |
2r3k1/pprb2pp/4pp2/3p4/PPqP4/2P2N2/5PPP/R1R2QK1 w - - 7 27 | Qxc4 | What is the material balance in this position? | Equal | material |
8/pp2R2p/3BNkb1/3P1p2/7p/8/PP1rr2P/5R1K w - - 1 32 | Bb4 | Does Black have any isolated pawns? | Yes: f5, h4, h7 | structure |
rnb1kb1r/pp2qppp/5n2/3p2N1/4p3/2N5/PPQPPPPP/R1B1KB1R w KQkq - 0 8 | Nxd5 | What piece is on c4? | Empty | occupancy |
r1b4r/p2pkpbp/2nN2p1/3pP3/8/2Q5/2P2PPP/R5K1 w - - 4 22 | f4 | What piece is on c6? | Black Knight | occupancy |
6k1/pp4p1/2q2b1p/3p3Q/2rP4/P7/P2R2PP/1K1R4 b - - 7 25 | Bg5 | Is the move from g8 to h7 legal? | Yes | legality |
2rr2k1/p4ppp/bp1np3/8/8/P4PP1/PR1BPKBP/7R w - - 5 23 | Bb4 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/3npp1N/2p3PQ/p7/3Pn3/8/1PPK1PP1/q4R1R w - - 0 21 | Ke3 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
rnbq1rk1/pppp1ppp/4pn2/8/1bPP4/2N2N2/PPQ1PPPP/R1B1KB1R b KQ - 5 5 | c5 | Identify any White knight outposts on the board. | None | outposts |
2rq1rk1/3n1ppp/1p1np3/p1pb4/3P4/1P2PNP1/PQ2NPBP/R2R2K1 w - - 2 17 | Nf4 | What piece is on g4? | Empty | occupancy |
2Q1nk2/5p2/3p2p1/pq1P3p/2pP4/5N1P/1P3PPK/8 w - - 0 35 | Ne5 | What piece is on h1? | Empty | occupancy |
3n4/1p2bp1p/p3k1p1/4p1P1/4B3/2P1BP2/PP2K2P/8 b - - 0 28 | f5 | Is the Black king in check? | No | check |
r1b2r1k/pp1nq1pp/2pbp2n/3p1p2/2PP4/2NBP2P/PPQBNPP1/R4RK1 w - - 3 11 | cxd5 | Is the f-file open, semi-open, or closed? | closed | files |
r2qkbnr/ppp1pppp/2n3b1/8/3P2P1/5N1P/PPPN4/R1BQKB1R w KQkq - 1 8 | h5g6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbq1rk1/ppppppbp/5np1/4P3/2PP4/2N5/PP3PPP/R1BQKBNR b KQ - 0 5 | Ne8 | Identify any White knight outposts on the board. | None | outposts |
6k1/1p1q1pp1/p1r1b2p/3p4/3P4/P4B1P/1P1Q1PP1/4R1K1 w - - 2 29 | Rc1 | Does Black have any passed pawns? | No | structure |
r4rk1/2p3bp/p5p1/2pPP1q1/5p2/1PNb1P2/PB1P2PP/R3QRK1 w - - 3 20 | Ne4 | What piece is on a1? | White Rook | occupancy |
rnbq1rk1/pp3ppp/2pb4/3p4/2PPn3/1Q1B1N2/PP3PPP/RNB2RK1 b - - 1 9 | dxc4 | What piece is on g5? | Empty | occupancy |
r4rk1/2pqbppp/p1n5/1p1pP2b/3P4/2P1BN1P/P1B2PP1/R2QR1K1 b - - 2 16 | Nd8 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r3kb1r/ppp1q2p/3p1p2/2n1pnpb/2B1P3/2NP2BP/PPPQ1PP1/R3K2R w KQkq - 0 12 | h6f5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
3r1rk1/p1q1b2p/2p1bpp1/2P1n3/3pPB2/1N1B2QP/PP4P1/2R2RK1 w - - 0 20 | h4 | Is the move from f1 to e1 legal? | Yes | legality |
8/nk2p3/8/8/1K6/P7/2R5/8 w - - 9 71 | Kc5 | What piece is on b4? | White King | occupancy |
6k1/5ppp/3r4/8/8/3q4/5PPP/R2B2K1 b - - 0 1 | Qxd1+ | Does White have any passed pawns? | No | structure |
3k4/1r2np1p/p3p3/P1R1P1p1/1p6/8/1P1NKPPP/8 b - - 5 33 | b3 | Is the White king in check? | No | check |
3r4/p3kp2/2p2b1p/2r1p3/4P1PP/1PPP1N2/P3K3/R6R w - - 1 24 | b5c5 | Identify any White knight outposts on the board. | a4, c4, h5 | outposts |
6n1/4n2k/R5p1/p3P3/8/7P/1P1q2P1/1B4QK w - - 3 44 | Qf1 | What is the material balance in this position? | White is up 4 pawns of material | material |
3n4/2R2pb1/6p1/3rp2p/8/3kBN1P/5PP1/5K2 b - - 0 30 | Ke4 | Does White have any isolated pawns? | No | structure |
8/8/8/4p3/1p1N4/7K/5k2/8 w - - 0 7 | Nc6 | What piece is on b4? | Black Pawn | occupancy |
6rk/4Q2p/b4ppB/q2P4/3p4/2N4P/PP4P1/7K b - - 0 7 | Qb6 | What piece is on d1? | Empty | occupancy |
r3r2k/5Bbp/p5p1/4P3/1B2QPn1/8/1qPK2PP/3R3R w - - 1 23 | Bxe8 | Is the move from e4 to f3 legal? | Yes | legality |
r1br2k1/p3qpb1/1p6/n2PpP1Q/2p1P2R/2P3P1/P2B2B1/R3K3 b Q - 2 23 | Kf8 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r3r3/3kb3/p1pB2p1/2Pn2Pp/q7/7P/5QP1/2R1R1K1 w - - 4 36 | Qf7 | What piece is on h3? | White Pawn | occupancy |
3q4/6p1/Q1pk1p2/2b1PP1r/3p4/2P4P/PP6/2KR3R b - - 0 28 | f4e5 | Is the Black king in check? | Yes | check |
r1bq1rk1/p4ppp/2pb4/n2np3/8/3B1N2/PPPP1PPP/RNBQR1K1 b - - 7 11 | Qc7 | What piece is on a7? | Black Pawn | occupancy |
r3kbr1/ppp4p/2n2Qb1/q2pp3/8/1BP1B3/PPP2PPP/R4RK1 w q - 1 16 | Rad1 | Identify any Black knight outposts on the board. | None | outposts |
4r1k1/3n1bpp/nq3p2/pp6/8/B2P1NP1/P3P1BP/1R1Q1K2 w - - 0 25 | Bb2 | What piece is on h2? | White Pawn | occupancy |
2kr3r/3p1p2/p3pb1n/3n4/qpP1Q2p/1N5P/PP5B/1K1RR3 b - c3 0 28 | Qa3 | Identify any Black knight outposts on the board. | f5 | outposts |
r1b2rk1/4b1pp/1B1p4/PB1P2q1/4pp2/R7/2P2PPP/3Q1R1K b - - 0 24 | Rf6 | Is the move from f8 to f5 legal? | Yes | legality |
rn1qkbnr/pp2pppp/2p3b1/8/3P3P/6N1/PPP2PP1/R1BQKBNR b KQkq - 0 6 | h6 | Does Black have any passed pawns? | No | structure |
r4rk1/ppp2p1p/2n1b1p1/5PB1/2Pb4/6N1/PP2B1PP/2KRR3 b - - 0 16 | gxf5 | Does Black have any passed pawns? | No | structure |
r1br2k1/1pp1qppp/2n1p3/2N5/2PP2n1/P4NP1/P4PBP/R2Q1RK1 w - - 1 16 | Nb3 | Identify any Black knight outposts on the board. | None | outposts |
r1b2rk1/1p3ppp/4pn2/p7/Pp6/3pqN2/2Q1P1PP/1N2KB1R w K - 0 18 | c4d3 | Identify any Black knight outposts on the board. | a3, c3 | outposts |
q4rk1/p4ppp/8/4p3/1bp1n3/2Nb1NP1/PP1B1P1P/R2QK1R1 b Q - 6 18 | Rd8 | What piece is on a6? | Empty | occupancy |
8/8/p3N3/5p1p/P1P1pb2/3K3k/5P2/8 w - - 0 45 | e5e4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2rq1rk1/pb3pbp/1p2p1p1/3p4/2PP4/PPR4R/1B3PPP/3Q1BK1 w - - 2 20 | Rc1 | Are there any open files in this position? | No | files |
r1bqkbnr/ppp2pp1/2np3p/4p3/2B1P3/5N1P/PPPP1PP1/RNBQK2R w KQkq - 0 5 | c3 | Does White have any isolated pawns? | No | structure |
2rq1r2/pb3pp1/1p4k1/3pP1N1/5Q1P/8/Pn3PP1/3RR1K1 b - - 0 21 | Rc4 | Does Black have any isolated pawns? | Yes: d5 | structure |
2r2q1k/pp1b1r1n/4pP1Q/3p4/8/7R/PPB2PPP/2R3K1 w - - 1 27 | Bg6 | Identify any Black knight outposts on the board. | d5 | outposts |
r1b1nrk1/ppp2ppp/1b1p4/3NP1q1/B2n4/2PN4/PP1P1PPP/R1BQ1K1R b - - 2 11 | Bg4 | What piece is on g5? | Black Queen | occupancy |
2r3k1/5p1p/4np2/3R4/2P1Q2N/1q4P1/5PKP/8 w - - 0 1 | Qg4+ | Is the b-file open, semi-open, or closed? | open | files |
3k4/6R1/3K4/3P4/8/8/8/2r5 b - - 0 1 | Kc8 | Is the move from c1 to b2 legal? | No | legality |
3rn3/1b4k1/p2pppp1/2p5/P3P2r/2NR2P1/1PP1BP2/3R2K1 b - - 0 24 | Rh7 | Is the move from f6 to e6 legal? | No | legality |
3rr3/bpq2ppk/p1p1b2p/1P1pP2N/3Pn3/4BN1P/1P3PP1/R1Q1R1K1 b - - 0 21 | Rc8 | Are there any open files in this position? | No | files |
rn2kb1r/pp2pppp/2pp4/3nP3/1qBP4/5N1P/PP2QPP1/R1B2RK1 b kq - 0 12 | e6 | Are there any open files in this position? | No | files |
8/1p6/6p1/4bpk1/3R4/1P1B2rP/5K2/8 b - - 3 49 | Rxh3 | Does White have any passed pawns? | No | structure |
r1b1k2r/1p4pp/1qn1pn2/2bp4/p7/2PB1N2/PP1NQPPP/R1B1R1K1 w kq - 0 13 | Nf1 | Is the move from d2 to e2 legal? | No | legality |
5rk1/5p1p/5p2/2P5/1P2p3/6P1/5P1P/5BK1 w - - 0 27 | b5 | Is the move from f1 to b5 legal? | Yes | legality |
4r1k1/1p3pBp/pqrpb1p1/8/4nN2/1P1R3P/P1P3P1/5RQK w - - 0 24 | Bd4 | What piece is on d6? | Black Pawn | occupancy |
6k1/pbp3B1/1p3P2/3p4/3P4/8/PPP4P/6rK w - - 0 29 | Kxg1 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
1r4k1/5ppp/pp1p1b2/3qn3/P2N4/4P1P1/2Q2P1P/1R1B2K1 w - - 0 31 | Rxb6 | Is the move from h2 to b1 legal? | No | legality |
r1bqkb1r/pp3ppp/4p3/3pn3/2P5/6P1/PPQ1PPBP/RNB2RK1 b kq - 4 10 | Nxc4 | Is the move from f8 to b4 legal? | Yes | legality |
rn1qkb1r/pbp2pp1/1p1ppn1p/8/2PP1B2/4PN2/PP2BPPP/RN1Q1RK1 b kq - 0 7 | g5 | Is the Black king in check? | No | check |
rn1r2k1/2p2pbp/p5p1/1p2N3/4b3/2P3NP/PP3PP1/R1B1R1K1 w - - 0 19 | Rxe4 | Identify any Black knight outposts on the board. | None | outposts |
8/K7/P3n3/8/8/7k/8/8 w - - 1 64 | Kb6 | Is the White king in check? | No | check |
5rk1/5pbp/b1pQ1np1/8/1p2PP2/1P1R2qP/4K3/1N3BBR b - - 2 22 | Nd5 | What is the material balance in this position? | White is up 4 pawns of material | material |
r1bQkbnr/p3pppp/2p5/6B1/2p5/2N5/PP2PPPP/R3KB1R b KQkq - 0 8 | d1d8 | What is the material balance in this position? | White is up 8 pawns of material | material |
r4k2/1R2n1p1/4Q2p/4N3/p7/3P3P/5PPK/2q5 b - - 2 31 | Qf4+ | Does White have any passed pawns? | Yes: d3 | structure |
r1bR1rk1/pp4pp/1b3n2/4pp1Q/BNp5/2P1P3/PP3PPP/R1B3K1 b - - 0 17 | Nxh5 | What piece is on e3? | White Pawn | occupancy |
5rk1/5p1p/6p1/8/1p2qP1P/1P1n4/N2KB1P1/6QR b - - 0 30 | Rd8 | What piece is on a2? | White Knight | occupancy |
rnbqkb1r/pp2pppp/5n2/3p4/3P4/2PB4/PP3PPP/RNBQK1NR b KQkq - 0 5 | Bg4 | Is the move from f7 to g1 legal? | No | legality |
r2r2k1/1pq3pp/1np2p2/p3pN1P/P2P4/2P5/1P2QPP1/R4RK1 w - - 3 29 | Rfe1 | Is the White king in check? | No | check |
rnbq1rk1/ppp3bp/3p1np1/4Pp2/1PP5/5NP1/PB2PPBP/RN1QK2R b KQ - 0 8 | Nfd7 | Does White have any passed pawns? | No | structure |
rnb1kb1r/2pq1ppp/p7/1p1pP1NQ/2pP4/8/PP3PPP/R1B1KB1R w KQkq - 0 10 | Nxh7 | Does Black have any passed pawns? | No | structure |
k4b1r/p4Npp/B1p1p3/3P4/6q1/6B1/PP3P2/3R1RK1 b - - 0 22 | Bc5 | What piece is on h1? | Empty | occupancy |
8/4b1k1/6qp/4PQ2/P1B5/8/6PP/7K w - - 4 36 | Qxg6+ | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
7r/7p/7b/5P1k/5Q2/2N5/PPP5/R5K1 w - - 3 35 | g7h6 | What is the material balance in this position? | White is up 12 pawns of material | material |
8/8/6B1/3p4/3b4/k3p3/1p2K3/8 w - - 4 11 | Bb1 | Does Black have any passed pawns? | Yes: b2, d5, e3 | structure |
r1b3rk/1p5p/p2p3q/1p1Pp3/8/2PPRp2/PP1R2PN/4Q1K1 w - - 0 25 | Rxf3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5R2/8/8/6kp/8/5PP1/6K1/7r b - - 2 64 | Ra1 | What piece is on g5? | Black King | occupancy |
7r/1ppQ1pk1/5q2/p1b1p1p1/4P2P/2P3P1/PP3P2/R4RK1 b - - 0 27 | Qf3 | Is the move from h8 to e3 legal? | No | legality |
b7/N2k1pp1/3np2p/1PKp4/3P4/3B1P2/6PP/8 w - - 5 32 | b6 | Does White have any passed pawns? | Yes: b5 | structure |
rq1b2rk/1p5p/p2p1pp1/3NpP1b/4P3/2B4Q/PPP4P/2K2BR1 w - - 1 23 | Bc4 | Are there any open files in this position? | No | files |
r2qk2r/pp1n2pp/8/3pP2Q/3Pp3/8/PP4PP/R1B1K2R b KQkq - 1 14 | d1h5 | Is the Black king in check? | Yes | check |
rnbq1rk1/pppnbppp/4p3/3pP1B1/3P2QP/2N5/PPP2PP1/R3KBNR b KQ - 2 7 | Re8 | Is the g-file open, semi-open, or closed? | closed | files |
5k2/p6p/1p1p2p1/2pP1b2/2Pq2P1/7P/PP2Q2K/5B2 b - - 0 35 | Bb1 | Are there any open files in this position? | Yes: e, f | files |
r1bqr1k1/pp1nppbp/2pp1np1/8/2PP4/1P2PN2/PB2BPPP/RN1Q1RK1 w - - 1 9 | b4 | Does White have any isolated pawns? | No | structure |
5b1r/p2rk1pp/4pp2/1R6/8/2P1BP2/P3KP1P/7R w - - 0 19 | Rd1 | Does White have any isolated pawns? | Yes: a2, c3, f2, f3, h2 | structure |
rn1q1rk1/pp3ppp/2pb1n2/3pN1Bb/3P1P2/2N1P3/PPQ3PP/R3KB1R b KQ - 0 10 | Qa5 | Are there any open files in this position? | No | files |
1r1q1rk1/1b6/5p1p/pPN1p3/P1P2PQ1/3Bp1P1/7P/R3R1K1 b - - 1 32 | e2g4 | Is the White king in check? | No | check |
7r/r7/pk2Q3/2pP4/2P1PB2/1P4P1/P5KP/b7 b - - 3 31 | g4e6 | Is the Black king in check? | Yes | check |
r3k2r/1p2b1p1/1nn1bp2/pq2P3/8/5NP1/3NP2P/B1RQR1KB b kq - 0 22 | fxe5 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/5ppp/b1n1pn2/2p5/8/5NP1/PP1QPPBP/RN2K2R w KQ - 0 14 | O-O | Identify any White knight outposts on the board. | None | outposts |
r4rk1/p1qP1p1p/1pb2bp1/2pN1N1n/6Q1/6P1/PP3P1P/R1BR2K1 b - - 2 21 | Bxd5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
8/6kp/6p1/pp6/8/1r3P2/1K6/8 w - - 0 44 | a3b3 | Is the White king in check? | Yes | check |
r3kb1r/1bq2p1p/p2p1np1/1pn1PN2/4P1P1/P1N2B2/1PP1Q2P/R1B2RK1 b kq - 0 14 | dxe5 | Is the move from b5 to e4 legal? | No | legality |
1rbq1rk1/3nbppp/p2p2n1/1ppP4/P3P3/7P/1PBN1PPN/R1BQR1K1 w - - 3 17 | Ndf1 | Are there any open files in this position? | No | files |
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