fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
6r1/k1p5/1p6/pP1p3Q/P2P4/2P1NR2/3qr3/5R1K w - - 1 41 | Qh7 | Does Black have any passed pawns? | No | structure |
2r1kb1r/1b2q2p/pBnpN1p1/3Bn1P1/4P3/2P5/P1P4P/R2Q1RK1 w - - 0 19 | Rf6 | What piece is on a1? | White Rook | occupancy |
r2q1rk1/pppn1pp1/7p/2p1p3/2PnP3/3PBBPP/PP3P2/R2Q1RK1 w - - 1 14 | Bg2 | What piece is on d8? | Black Queen | occupancy |
r3R1k1/pppq1p1p/6p1/3P4/3p4/3Q2Pb/PPP2PBP/5RK1 b - - 0 17 | e1e8 | Is the Black king in check? | Yes | check |
6k1/pN2ppbp/6p1/8/2r5/1R2PKP1/P4P1P/8 w - - 0 27 | Ra3 | What piece is on f1? | Empty | occupancy |
2b4r/2r2pk1/p3p2p/1p1pP2p/3K1PP1/1P1B4/P1P4R/7R w - - 0 31 | Rxh5 | Identify any Black knight outposts on the board. | None | outposts |
2kr3r/1pp1b2p/1p4p1/4pp2/1PN1P3/P1P5/2K2PPP/R6R b - - 1 17 | Bf6 | Is the move from e7 to h8 legal? | No | legality |
r1bQ4/pp2r2p/1npk4/8/4P3/4bP1B/PP3q1P/RN1K3R b - - 16 29 | h8d8 | Is the Black king in check? | Yes | check |
8/p1k2p2/1p1p1P2/2pP4/4B2n/P1P5/5K2/8 w - - 2 6 | Kg3 | What piece is on f4? | Empty | occupancy |
1k1r3r/1pq2pp1/p1n1pnp1/P7/2PP1P2/6N1/1Q2B1PP/3R1RK1 b - - 3 29 | Qxa5 | Does Black have any passed pawns? | No | structure |
8/8/5pk1/1R5p/7P/rPP5/5K2/8 w - - 0 55 | c4 | What is the material balance in this position? | White is up 1 pawn of material | material |
3q3r/ppk2pQP/4bP2/3p4/P1pP4/2P5/2PK1P2/4R3 b - - 4 36 | Bf5 | Identify any Black knight outposts on the board. | None | outposts |
4k1r1/pp5p/2Q4r/4P2n/8/2B2Pp1/PP5P/2R2RK1 b - - 0 31 | bxc6 | Is the move from e8 to f8 legal? | Yes | legality |
4rrk1/2pb1p2/1pq1pQp1/p3P1Kp/P1PR3P/5N2/2P2PP1/8 w - - 0 3 | Kh6 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r1bqk2r/pp2nppp/3p1n2/2pPp3/2P1P2N/2PB4/P4PPP/R1BQK2R b KQkq - 2 10 | h6 | What piece is on f8? | Empty | occupancy |
4r1k1/1P2P1pp/8/5p2/3p3Q/6P1/2q4P/4KR2 b - - 0 34 | d3 | Identify any Black knight outposts on the board. | c3, e3, e4 | outposts |
r3k1nr/pp1b1ppp/2n1p3/qBb1P3/3p4/P1N2N2/1BP2PPP/R2Q1RK1 w kq - 0 12 | d5d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5rk1/qpp2pp1/6p1/r2PRn2/3P4/bB3QP1/1B3P1P/R5K1 w - - 0 22 | d6 | What piece is on b6? | Empty | occupancy |
3r2k1/2nrqppp/3N4/p1p1PP2/1b3Q2/4B3/1P4PP/2RR3K w - - 3 28 | Qg3 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r3kb1r/ppBb2pp/5qn1/3P1p2/8/5P2/PPP1NP1P/R2Q1RK1 w kq - 1 15 | e7g6 | Identify any White knight outposts on the board. | e6 | outposts |
r1r1n3/3nk1p1/4p2p/2p1Pp1Q/5P2/P1N2R1P/1qP3P1/3R3K b - - 1 22 | Nf8 | What piece is on b4? | Empty | occupancy |
r4rk1/1b2bp2/p1qpp3/1p2n2Q/4P3/P1NB4/1PP2PPP/R3R1K1 w - - 3 18 | Nd5 | Are there any open files in this position? | No | files |
4kq2/4b3/6p1/7p/3Q1B2/5P2/5PKP/8 b - - 7 58 | Qf5 | Does Black have any isolated pawns? | No | structure |
2r2kr1/qp1bpp1p/2npn1p1/p1pN4/2P5/PP1P2P1/1Q2PP1P/2RN1KRB w KQkq - 2 10 | N1c3 | Is the e-file open, semi-open, or closed? | closed | files |
3r1k2/2q2pp1/1p5p/p1bB3P/P1Pp2Q1/3P2P1/5PK1/4R3 w - - 12 37 | Qe4 | Identify any White knight outposts on the board. | d5 | outposts |
r1b2rk1/pp2ppbp/1q3np1/n2p4/3P1B2/P1NBPN1P/1P3PP1/R2Q1RK1 b - - 2 11 | Bf5 | What piece is on b6? | Black Queen | occupancy |
4R1k1/8/1p1Q2pq/3pBp1p/3P4/6P1/PP3PKP/8 b - - 11 40 | e7e8 | Is the Black king in check? | Yes | check |
3r1bk1/ppqb2pp/2p5/2P1rP1B/3B4/1P4P1/P1Q4P/R4RK1 b - - 0 20 | Rxf5 | What piece is on a3? | Empty | occupancy |
r4rk1/2Bqbppp/p1R1pn2/8/Q2pP3/3B4/PP3PPP/5RK1 w - - 3 17 | Rfc1 | Does Black have any passed pawns? | Yes: d4 | structure |
r1b2rk1/2p2ppp/p2b4/1p6/6nq/1BP2Q1P/PP1P1PP1/RNB1R1K1 w - - 3 15 | d4 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/pp3ppp/2n2p2/3q4/3P2b1/2P2N2/P2QBPPP/R3K2R w KQ - 4 13 | O-O | What piece is on h5? | Empty | occupancy |
1n3rk1/3r1ppp/3ppq2/1p6/1P6/2R1QBP1/P3PP1P/3R2K1 w - - 1 20 | Rdc1 | What piece is on a7? | Empty | occupancy |
1rbq1rk1/Np1n1ppp/p3pn2/b1p5/P7/1Q1P1NP1/1P1BPPBP/R3K2R b KQ - 1 13 | c4 | What piece is on b2? | White Pawn | occupancy |
8/2Q2k2/5n2/3P1b2/1pP1r2p/1P3K2/8/8 b - - 1 60 | Kg6 | What piece is on b3? | White Pawn | occupancy |
2r2rk1/p2nqppp/2pbpn2/1p1p3b/2PP3N/1PN3PP/PB2PPB1/R1Q2RK1 w - - 0 13 | e4 | What is the material balance in this position? | Equal | material |
r3r1k1/1bpqbpp1/p1n4p/1p1n4/3PN3/1B3N1P/PP1B1PP1/R2QR1K1 b - - 3 18 | Nf6 | What piece is on e3? | Empty | occupancy |
rnbqk1nr/ppppppbp/6p1/8/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 2 3 | Bf4 | What is the material balance in this position? | Equal | material |
4k3/p3r2R/4p3/7p/2P5/P2K4/7P/8 w - - 0 41 | Rxe7+ | Does Black have any isolated pawns? | Yes: a7, e6, h5 | structure |
r5k1/p1Np2pp/b7/1p2rp2/2ppP3/PB1P4/1PPb1PPP/R4RK1 w - - 0 19 | Ba2 | What piece is on d5? | Empty | occupancy |
r2qkbnr/pp3ppp/2B1p3/3p4/4P3/8/PPPN1PPP/R1BQK2R b KQkq - 0 8 | bxc6 | Is the Black king in check? | Yes | check |
4k3/2Q5/4p3/1p4qp/8/6P1/6K1/8 w - - 10 62 | Qc8+ | Does White have any passed pawns? | No | structure |
6Q1/8/2p5/7K/2p4P/2k5/2P2p2/8 b - - 0 51 | f1=Q | Does White have any isolated pawns? | Yes: c2, h4 | structure |
2r1r1k1/3nqp2/p2p2p1/7p/1PnpP3/5B2/R2B1PPP/R2Q2K1 w - - 3 26 | Be1 | Identify any Black knight outposts on the board. | b5, c3 | outposts |
5bk1/5p2/p3p3/P3P3/2p5/2q1P2P/6Q1/5K2 b - - 17 53 | Kh8 | What piece is on c3? | Black Queen | occupancy |
r5k1/1p3pp1/2p4p/p1bpP3/4P2q/P1NB3b/1PQ1NR2/3R2K1 w - - 1 21 | Nd4 | Are there any open files in this position? | No | files |
2bqr1k1/R2n1p2/6pQ/2pPp3/2Pp1P2/3B2N1/6PP/6K1 w - - 0 29 | Nh5 | Is the move from d3 to e2 legal? | Yes | legality |
1R6/5pk1/7p/3KPP2/r5P1/8/8/8 b - - 6 69 | Ra5+ | Identify any White knight outposts on the board. | d6, f5, f6, h5 | outposts |
rnbqkbnr/ppp2ppp/8/3pp3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3 | Nxe5 | Is the move from f2 to g4 legal? | No | legality |
r2q1rk1/2p1bppp/p1np1n2/1p6/3PP3/1B3Q1P/PP3PP1/RNB1R1K1 b - - 0 12 | Nxd4 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
r3k2r/1bqnb1pp/p3Qn2/1p2p1B1/5P2/2N5/PPP3PP/2KR1B1R w kq - 1 14 | Bxb5 | Is the move from g2 to c7 legal? | No | legality |
5rk1/6pp/8/1p1r1p2/3q4/5PP1/P2N3P/R2R1Q1K b - - 3 32 | Rfd8 | Is the Black king in check? | No | check |
r4rk1/p5pp/4np2/2p5/8/P3P1B1/2R2PPP/R5K1 b - - 1 22 | Rfd8 | What piece is on g4? | Empty | occupancy |
rq2k1nr/p1N2ppp/3n4/Qb2N3/P3P3/2PP4/1P3PPP/R1B1K2R b KQkq - 0 15 | d5c7 | Is the White king in check? | No | check |
1r6/p3kpb1/2p5/2r1p1N1/4P2P/1PPP4/P1R1K3/7R b - - 0 27 | f3g5 | Identify any White knight outposts on the board. | a4, c4 | outposts |
5k2/2B2p1p/p5p1/1r1K4/1P3P2/4b1P1/7P/1R6 w - - 11 46 | Kc6 | Does Black have any passed pawns? | No | structure |
2kr1b1r/ppq3pp/1Np2p2/4nb2/P4B2/2N3P1/1P2PPBP/2RQ1RK1 b - - 0 14 | Qxb6 | Identify any White knight outposts on the board. | None | outposts |
rn1qkbnr/pp2pppp/2p5/3p4/6b1/5NP1/PPPPPPBP/RNBQK2R w KQkq - 2 4 | c4 | What is the material balance in this position? | Equal | material |
2r2bk1/pb3r1p/q2PQpp1/1p6/8/P4N2/1B3PPP/2RR2K1 w - - 2 25 | Be5 | Identify any White knight outposts on the board. | None | outposts |
rn2kb1r/p2p1ppp/1p6/2pQ4/8/4PN2/P2R1PPP/2q1KB1R w Kkq - 2 13 | Ke2 | What piece is on c3? | Empty | occupancy |
r1q3k1/1ppb1pb1/3p2p1/1NnP3p/p1P5/4P1PP/PPQ3BK/R2R4 b - - 0 20 | Be5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
3rb2k/p1r1qpp1/1p2pR2/3pP1QP/2pP4/2P1P3/PPB3P1/5RK1 w - - 1 26 | Rh6+ | Are there any open files in this position? | No | files |
2r1r1k1/5pb1/5qp1/pRnp4/7p/P1p2PN1/2Q1B1PP/2BR2K1 w - - 0 27 | Nh1 | Does White have any isolated pawns? | Yes: a3 | structure |
5k2/p2b2pp/8/2pB2p1/P1P5/6P1/3rPP1P/5RK1 w - - 3 29 | Rb1 | Are there any open files in this position? | Yes: b, d | files |
2r5/5kp1/1p2p3/pPB1P1p1/P5P1/2pKP2P/2R5/8 b - - 0 35 | Rxc5 | Is the Black king in check? | No | check |
8/1K4p1/p7/6p1/2P2p2/PP2k3/6PP/8 w - - 0 50 | c5 | Is the move from c4 to c3 legal? | No | legality |
2R5/8/5K2/7P/4bp2/1R2k3/2p3r1/8 b - - 3 56 | Bd3 | Is the White king in check? | No | check |
1Rb1k3/4n2p/P5p1/4p3/4P3/5P1B/1P3K1P/2r5 w - - 0 43 | a7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3n4/1p1N4/p3p2k/5p2/1P3P2/P3P3/4K3/8 w - - 1 39 | Kd3 | What is the material balance in this position? | Equal | material |
3r2k1/prp4p/6p1/4N1B1/2Pn1P2/8/PP4PP/2K1R3 b - - 3 22 | Re8 | What piece is on c5? | Empty | occupancy |
r1bqr1k1/p1p2ppp/2pp2n1/2b2N1Q/4P3/8/PPPB1PPP/RN3RK1 w - - 2 11 | b4 | Are there any open files in this position? | No | files |
3r1bk1/p4pp1/b4q1p/3n4/N2pB3/1P3N2/P2Q1PPP/3R2K1 b - - 9 31 | Nf4 | Is the move from d8 to h2 legal? | No | legality |
1r3rk1/pb3p2/3Ppqpp/3n4/Q7/8/PP3PPP/RBB2RK1 b - - 2 22 | Rfd8 | Does Black have any isolated pawns? | Yes: a7 | structure |
rnbk2nr/pp2pp1p/6p1/2p5/2P5/2P2N2/P3PPPP/R1B1KB1R w KQ - 0 8 | g3 | Does Black have any passed pawns? | No | structure |
3r4/pp4pp/6k1/PPKr4/8/5RP1/8/8 w - - 1 35 | d7d5 | Is the White king in check? | Yes | check |
5rk1/4pp1p/3p2P1/q2P4/1p1Q4/4KP2/1Pr3P1/3R3R b - - 0 24 | e5 | Is the a-file open, semi-open, or closed? | open | files |
r1r3k1/1bq2pp1/p2p3p/1p2p2n/P3Pb1P/5P2/BPPNQBP1/2RR2K1 b - - 0 25 | bxa4 | Are there any open files in this position? | No | files |
5r2/7k/4Bnq1/3P4/1p5P/5pP1/rPQ2P2/4R1K1 w - - 0 37 | Bf5 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
4r1k1/p2q2p1/2r1b2p/1p1pR2P/5R2/P1P3PB/1P2Q3/1K6 w - - 2 47 | Rf1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
rn3rk1/p4ppp/1ppb4/q2P4/8/1R3N1B/P4PPP/3Q1RK1 b - - 0 19 | Qxd5 | What piece is on a2? | White Pawn | occupancy |
rq2r1k1/1b1n1ppp/2pb1n2/1p6/1P1NP3/1QN1B1P1/4BP1P/2RR2K1 b - - 0 21 | Ne5 | Is the move from a8 to f2 legal? | No | legality |
r6r/1p1b1k1p/p3pqpQ/2p2p2/6P1/2PB3R/PP3P1P/3R2K1 w - - 3 24 | Bc4 | What piece is on a6? | Black Pawn | occupancy |
r1bqk2r/pppp1Npp/2n2n2/4p3/2B1P3/8/PPPP1bPP/RNBQK2R w KQkq - 0 6 | Ke2 | What is the material balance in this position? | Equal | material |
r4rk1/1pp2pp1/p1npbq1p/4p3/P1BNP3/3PP3/1PP3PP/R2Q1RK1 b - - 1 12 | Qg6 | Is the move from c6 to e7 legal? | Yes | legality |
1r1kr3/3qb1Q1/p2p4/8/4RP2/1P6/1P4PP/1K2R3 w - - 6 29 | g4 | Identify any Black knight outposts on the board. | b5 | outposts |
r2qk1nr/1ppn1ppp/3b4/pP2p3/2Pp4/P2P1PP1/5P1P/RNBQKB1R w KQkq - 1 9 | Bg2 | Is the move from h2 to h5 legal? | No | legality |
rn2r1k1/p3Bpbp/2qP2p1/1p1Qn3/2p5/5N2/PP2B1PP/R4R1K w - - 1 19 | Rad1 | Is the move from e2 to h8 legal? | No | legality |
r4r1k/pbn1Np1N/np4p1/3p4/3q1B1Q/6PB/P4P1P/b3R1K1 w - - 0 23 | Nf6+ | What is the material balance in this position? | Black is up 6 pawns of material | material |
7r/R2Bkppp/4pn2/1bp1b3/2P5/1P6/1P1P2PP/2B2RK1 b - - 0 18 | Bxd7 | What is the material balance in this position? | White is up 3 pawns of material | material |
nnrkbrqb/pppppppp/8/8/8/6P1/PPPPPP1P/NNRKBRQB b KQkq - 0 1 | g6 | What piece is on a6? | Empty | occupancy |
rn2k2r/ppq1bppp/2p1pnN1/3p4/2PPP1P1/1Q3P2/PP1N3P/R1B1KB1R b KQkq - 0 10 | hxg6 | Is the move from h8 to f7 legal? | No | legality |
rnbq3r/pp3kpp/3b1n2/2pP4/2BP4/8/PPP2PPP/RNBQK2R w KQ - 1 8 | O-O | Identify any Black knight outposts on the board. | None | outposts |
2r1kr2/pb2b3/3q2p1/PPp1p1Np/2QpP2P/5NP1/1P3P2/2R1R1K1 w - - 3 27 | Kg2 | Is the move from c4 to d4 legal? | Yes | legality |
2rr4/1b2bpk1/pq3npp/2p5/Q2p4/P1N1PNP1/1P1R1PP1/1B1R2K1 w - - 0 25 | Ne2 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r4r1k/ppq1p1bp/2n1b1p1/2Pp1p2/Q2Pn3/2N1BN2/PP2BPPP/3RR1K1 w - - 4 14 | Bb5 | What piece is on c4? | Empty | occupancy |
r3k3/1pp2pp1/p1pb1qn1/4p3/3PP1Q1/8/PPPN1PPr/R1B1R1K1 b q - 0 13 | Qh4 | What piece is on d1? | Empty | occupancy |
r2qk2r/pbpn1pb1/1p1pp2p/6p1/2PP4/2NBPNP1/PP4PP/R2Q1RK1 w kq - 2 12 | Bc2 | Are there any open files in this position? | No | files |
8/8/2p3r1/8/1KRk4/8/8/8 b - - 17 68 | c5c4 | Is the Black king in check? | Yes | check |
rn2k2r/p1pp1ppp/4p3/4P3/3P1N1q/3B4/P2B1P1P/R2QK2b b Qkq - 3 13 | c3d2 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2r3k1/5ppp/2r1p3/p2p1b2/3P1B2/4PP2/PP4PP/R3R1K1 b - - 2 19 | Bg6 | Are there any open files in this position? | Yes: c | files |
br3r2/5ppk/3pp3/p3b2P/4P3/5P2/1P2B3/1KBR3R w - - 2 28 | Bd3 | Does White have any passed pawns? | No | structure |
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