fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/R7/8/3r4/p6P/3k2B1/4q1K1/8 w - - 2 42 | d1e2 | Is the White king in check? | Yes | check |
2rq1rk1/1p2bppn/p1npb2p/4p3/P1P1P3/1P3N1P/NB3PP1/R2QRBK1 b - - 0 16 | f5 | Does White have any passed pawns? | No | structure |
rnbq1rk1/4bppp/p2p4/1P1Pp3/8/N3B3/PP3PPP/R2QKB1R w KQ - 1 13 | Qd2 | Does Black have any isolated pawns? | Yes: a6 | structure |
5rk1/Q4p1p/2bpr1p1/2p5/8/2R2N1P/5PP1/6K1 w - - 1 25 | Qc7 | What is the material balance in this position? | White is up 2 pawns of material | material |
6R1/1p1r1k2/p2p2n1/3Pp2p/1P2Pp2/3B1Pp1/2R3PP/7K b - - 0 40 | Kxg8 | What piece is on d1? | Empty | occupancy |
r2qk2r/pb1n1pb1/2p1pn1p/1p2N1p1/2pPPP2/2N3B1/PP2B1PP/R2Q1RK1 b kq - 0 12 | Nxe5 | Is the move from c4 to a7 legal? | No | legality |
r2q1k1r/p1pp2bP/1p3n2/4n1B1/2P2N1Q/2p5/PPB2P1P/2K4R b - - 3 16 | Kf7 | Is the Black king in check? | No | check |
8/7r/5R1k/6Rp/p1p1K2P/P1P3P1/1P6/8 b - - 14 43 | f2f6 | Is the Black king in check? | Yes | check |
rn3rk1/pb1q1pbp/6p1/2pPN3/2N2P2/8/PP3KPP/R1BQ3R b - - 4 15 | Qxd5 | Is the move from d7 to e8 legal? | Yes | legality |
4Q3/P1r2pk1/4p2p/4N1p1/3q4/8/5PPP/R5K1 w - - 0 34 | d5d4 | What is the material balance in this position? | White is up 3 pawns of material | material |
r4rk1/2qb4/p4PpQ/1p1pp1P1/1P6/b2R4/2P3PP/5R1K b - - 1 30 | Bf5 | Identify any Black knight outposts on the board. | e4 | outposts |
5r1k/6R1/7p/2P1Bp2/1P6/1P6/5KPP/1r6 w - - 3 39 | c6 | Identify any Black knight outposts on the board. | e4 | outposts |
r1bqk2r/4bppp/p2p1n2/npp1p3/4P3/2P2N1P/PPBP1PP1/RNBQR1K1 b kq - 0 10 | O-O | Are there any open files in this position? | No | files |
8/p2r2Bk/1p5p/3b4/4PppP/1P6/1PP3P1/3R2K1 b - - 0 32 | Bc6 | What piece is on e7? | Empty | occupancy |
N7/1pk3p1/2pp4/4p3/pK5P/n1P5/5R2/2b5 b - - 0 46 | b6a8 | Is the White king in check? | No | check |
6k1/q2brpb1/1npp2p1/1p4P1/1PnPPB2/1NP2Q2/2B2RN1/6K1 w - - 17 34 | Qg3 | What piece is on e8? | Empty | occupancy |
8/8/8/K1b5/1nk5/8/8/8 w - - 30 16 | Ka4 | What is the material balance in this position? | Black is up 6 pawns of material | material |
rnbq1bnr/ppp2k2/7p/3p4/3PPBpP/8/PPP3P1/RN1QKB1R b KQ - 0 8 | Nf6 | Are there any open files in this position? | Yes: f | files |
5rk1/pp3ppp/2p1p3/4P2P/4Q1P1/2q1P3/P1Pr4/R4RK1 w - - 1 23 | d8d2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3b1qrk/1b1n1p1p/pp1p2r1/3Np3/2P1P1n1/4B3/PP1R1NPP/4RBQK b - - 3 28 | Bh4 | What piece is on a2? | White Pawn | occupancy |
3r4/p3k1p1/1rp1Nb1p/1p5B/P1p2B2/8/2K3PP/4R3 w - - 16 29 | Nc5+ | Are there any open files in this position? | Yes: d, e, f | files |
rn1qkbnr/pbp1pppp/1p6/1B2p3/3P1P2/8/PPP3PP/RNBQK1NR b KQkq - 1 5 | f1b5 | Is the White king in check? | No | check |
4rkQ1/pp1n1r2/2p1p3/5n2/8/2P3R1/P1P5/2K5 b - - 1 39 | g5g8 | Is the Black king in check? | Yes | check |
r2qk2r/3bbppp/p1p2n2/1p1p4/4P3/P1NQ2P1/1P3PBP/R1B2RK1 w kq - 0 16 | exd5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqr2k/pp6/4pbQ1/2p3B1/3P1P2/2P5/P5PP/R4RK1 b - - 2 17 | Bxg5 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
rn6/pb3p2/1p5k/2p1PB2/2P2pQp/P1P5/5PPP/3q2K1 w - - 0 25 | Qxd1 | Identify any White knight outposts on the board. | d6, f6 | outposts |
8/b7/P1B2k2/5p2/1P6/5KPP/8/8 w - - 1 49 | Bd7 | Is the a-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/2pq1pp1/7p/pp1pPb2/3P4/1PP4P/5PP1/R2QRNK1 b - - 1 20 | Ra6 | Is the move from f5 to f6 legal? | No | legality |
rn3rk1/pp5p/1n2Pp1B/3P4/1bqQ4/2N2P2/PP5P/R3K3 w Q - 0 19 | Qg1+ | What piece is on e6? | White Pawn | occupancy |
2rb2k1/pb3r1p/qp1PQpp1/8/8/P4N2/1B3PPP/2R2RK1 w - - 1 24 | Ng5 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
r6k/ppp3p1/3p3p/8/4q3/7b/PP4QP/RNB4K b - - 1 28 | Qxg2# | Does White have any isolated pawns? | Yes: h2 | structure |
4r2k/r6p/p2R2pq/1p1Q1p2/8/1P2P2P/P4PP1/2R3K1 w - - 2 35 | Rd8 | Does Black have any passed pawns? | No | structure |
r2q1r2/1ppb1nk1/3p2pb/p1nPpp1p/2P1P3/PPN2P1P/2QNBBP1/1R2K2R w K - 0 19 | g4 | Are there any open files in this position? | No | files |
rn1q1bnr/pp1bkBpp/2p2p2/4P3/8/1QN1P3/PP3PPP/R1B1K1NR b KQ - 0 8 | d4e5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2r5/8/8/7p/5K1k/7p/2p3P1/8 w - - 0 3 | g3# | Is the move from g2 to h3 legal? | Yes | legality |
r1b1Qbkr/1p1n2p1/p7/3n2p1/5P2/8/P1P3PP/4RR1K b - - 0 24 | N7f6 | Is the d-file open, semi-open, or closed? | open | files |
8/p7/pp6/2P5/8/7k/8/7K w - - 0 3 | c6 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
2r2rk1/1bq1bppp/p3p3/2P5/1Q6/4BP2/PP2B1PP/2R1K2R b K - 0 20 | a5 | Are there any open files in this position? | Yes: d | files |
r1bqkb1r/ppp2ppp/5n2/3Pp3/2pnP3/P1N2N2/1P3PPP/R1BQKB1R w KQkq - 1 8 | c6d4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn5r/1pp2k2/4p2p/p3Pp2/3P1P1q/2P5/P2N2PP/R3KR2 w Q - 2 17 | d8h4 | Is the White king in check? | Yes | check |
r3r1k1/1p2qppp/4b1n1/pP1pN3/Q2P1P2/3BP2P/6P1/R1R3K1 b - - 0 26 | Qd6 | What piece is on g7? | Black Pawn | occupancy |
1r2rbk1/5ppp/1p6/8/2BB4/1P2P1P1/P4P1P/R5K1 w - - 3 23 | a4 | What piece is on h7? | Black Pawn | occupancy |
8/3k1p2/p1PP4/1r1PKp2/7p/3N4/8/8 b - - 0 50 | c5c6 | Is the Black king in check? | Yes | check |
r1b1k2r/1ppp1pp1/p1n2n2/1N2p3/2B1P3/1P1P1P2/P1P3K1/8 w q - 0 20 | a7a6 | What is the material balance in this position? | Black is up 14 pawns of material | material |
r4rk1/2qnb1pp/ppbppp2/8/P1BBPP2/2N3Q1/1PP3PP/3R1RK1 b - - 1 16 | d5 | Are there any open files in this position? | No | files |
8/5p1p/p4B2/1p1n4/4k3/1PP5/1P1K3P/8 w - - 8 38 | Bd4 | Is the move from c3 to a2 legal? | No | legality |
5k2/1p1r1p1p/p1n1pp2/2R5/6P1/1P2P3/P3KP1P/4N3 w - - 3 24 | Nd3 | What piece is on b4? | Empty | occupancy |
5rk1/5rpp/p5q1/1pnp4/2pNp2P/2Pb4/PP1Q1BP1/3BR1KN w - - 1 28 | h5 | Is the move from d1 to g4 legal? | Yes | legality |
6k1/ppp2ppp/2nb3Q/8/8/2PbKP2/PP1P2PP/R1BB1r2 b - - 3 21 | gxh6 | What is the material balance in this position? | White is up 7 pawns of material | material |
2r1k3/2q1b3/p1n1p2Q/1p1pPp2/1P5p/P1PB1NrP/2R3PK/4R3 b - - 1 26 | Kd7 | Are there any open files in this position? | No | files |
2b1r3/4qk1p/1np2pp1/p1Np4/Pp1P1P1P/1P1B1PP1/3Q1K2/2R5 b - - 2 41 | Kg7 | Identify any Black knight outposts on the board. | d5 | outposts |
6k1/4b1p1/4p2p/pPq1Pr2/2Qp1P2/1P2p1KN/7P/5R2 b - - 3 31 | d3c4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1rnqb1k1/1pr2pbp/p2p2p1/2nP4/PR2P3/N1N3PP/3B1PB1/1QR3K1 b - - 6 22 | b5 | Is the White king in check? | No | check |
6k1/r5pp/5p2/P7/1Pn5/5PK1/2R3PP/8 w - - 0 41 | c7a7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3k2r/pppq1ppp/4bn2/8/1PPn4/8/PB1PBPPP/RN1Q1RK1 b kq - 1 10 | O-O-O | What piece is on g7? | Black Pawn | occupancy |
r1br2k1/pp2qppn/4p3/1PP5/2p1P3/2Nn1N2/1P3PPP/R1BQ1K1R w - - 1 14 | Be3 | What piece is on h7? | Black Knight | occupancy |
3r4/8/8/P1k2P2/1N2K1P1/8/8/8 b - - 0 77 | Kxb4 | Does Black have any isolated pawns? | No | structure |
5rk1/6pp/p7/8/P2p4/6rq/2P1RP2/6K1 w - - 0 36 | f3g3 | Is the White king in check? | Yes | check |
rn1q1knr/p2p3p/bp1p4/5p1B/8/3P1Q2/PPP2PPP/RNB1K2R b KQ - 3 10 | Nf6 | Is the move from f8 to g7 legal? | Yes | legality |
1Q4k1/5pbp/p3p1p1/8/5P2/1P6/P1q3PP/3R1R1K b - - 0 34 | d6b8 | Is the Black king in check? | Yes | check |
8/7P/6p1/B3k3/8/1K6/4q3/8 b - - 1 4 | Qb5+ | Is the White king in check? | No | check |
r2rq3/1p2npbk/p1b1p1pp/2P1P3/2N2P2/1BP1B2P/P4QP1/R2R2K1 b - - 1 23 | Nf5 | Identify any Black knight outposts on the board. | None | outposts |
r1bk2r1/pppp1pBp/8/b2P4/2B4q/1Q6/P4PP1/R3R1K1 w - - 3 17 | Qg3 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
3qkb1r/rp2pppp/p1n5/8/3PpBn1/1Q2PN2/PP2BP1P/R3K2R w KQk - 0 12 | Ng5 | Does White have any passed pawns? | No | structure |
rnbqkb1r/pppp1ppp/5n2/4p3/2B1P3/8/PPPP1PPP/RNBQK1NR w KQkq - 2 3 | Nf3 | What piece is on b6? | Empty | occupancy |
r4r2/ppqb2kp/2n3p1/3p4/2pNp3/P1P1Q3/RPB2PPP/4R1K1 b - - 1 22 | Ne5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn1qkb1r/pp2pppp/2p2n2/8/2PP4/3Q1N2/PP3PPP/RNB1K2R w KQkq - 1 8 | O-O | What piece is on f5? | Empty | occupancy |
8/6k1/7p/2p5/2Pp1K2/1P5b/2B2R2/4r3 b - - 0 54 | Rf1 | Is the White king in check? | No | check |
r2q1r1k/1pp1bppp/pnnp4/4p2b/3PP3/1BP1BN1P/PP3PP1/RN1QR1K1 w - - 1 13 | dxe5 | Are there any open files in this position? | No | files |
2kr2r1/ppqbnp2/2n1p3/4P3/3p1P2/P1Q3N1/2P3PP/R1B1KB1R w KQ - 0 15 | Qc5 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
1rb2rk1/2q2pbp/3p2p1/3B4/1p1NPp2/2P2P2/1P2Q1PP/3R1RK1 w - - 0 22 | Nb5 | Is the a-file open, semi-open, or closed? | open | files |
5rbk/1p1P2rp/5q2/p1P2B1R/1p6/6N1/P2Q1P1K/8 w - - 0 43 | Ne4 | Does White have any passed pawns? | Yes: d7, f2 | structure |
8/p2k4/5np1/6N1/4b3/4P3/PBr5/R3K2r w - - 2 30 | h2h1 | Is the White king in check? | Yes | check |
r1b1Qb1r/ppk5/2n1p3/2ppn1B1/3P4/2P5/PP3PPP/R3K2R b KQ - 0 16 | Bg7 | Is the White king in check? | No | check |
2kr4/ppp5/2b1pN1p/4npp1/4P3/1P4K1/P1P2PPP/7R w - - 1 19 | b5c6 | What is the material balance in this position? | Black is up 3 pawns of material | material |
kq2r2r/1p2P1p1/pBR2n2/8/1Q1P4/6p1/PP4BP/6K1 w - - 0 27 | Bc5 | Is the move from d4 to e6 legal? | No | legality |
3q3k/Q2n3p/4b1p1/2p5/1p3r2/5B2/PPN2KPP/3R4 b - - 0 26 | Rf7 | Is the Black king in check? | No | check |
6rk/3b3p/2Np3b/1p1P1p2/p1pRpn2/P1P3qP/1PB3P1/5QRK b - - 1 42 | Ne2 | What piece is on h6? | Black Bishop | occupancy |
3r4/pb3pkp/1p2p1p1/1B2b2P/Pq2P3/3Q4/4nPP1/2RR1K2 w - - 0 23 | Qxe2 | Does Black have any isolated pawns? | No | structure |
6k1/2q2pp1/p4nnp/1pP1p3/4P3/P1Q1B3/1P3NPP/6K1 w - - 0 28 | b4 | Identify any White knight outposts on the board. | d6 | outposts |
rnbq1rk1/ppppppbp/5np1/8/8/3P1NP1/PPP1PPBP/RNBQ1RK1 b - - 0 5 | d6 | Are there any open files in this position? | No | files |
4r1k1/1p3p1p/p2p2p1/3P4/2P5/4Q3/P3B1PP/6K1 b - - 0 28 | Rxe3 | What piece is on c4? | White Pawn | occupancy |
r3k1nr/1ppBqppp/pn6/2b5/4P3/1P1P4/PBP2PPP/1R1QK2R b Kkq - 0 13 | g4d7 | Is the Black king in check? | Yes | check |
8/1R3p1p/4pk2/1B6/PP3pn1/2r5/5PPP/6K1 b - - 0 33 | Rc1+ | What is the material balance in this position? | White is up 1 pawn of material | material |
2r4k/pp2b1rp/8/6q1/3QR3/2pN4/P1P2RP1/6K1 b - - 7 26 | Rf8 | What piece is on e3? | Empty | occupancy |
8/8/8/5k2/7p/7K/8/8 w - - 2 54 | Kxh4 | Does White have any isolated pawns? | No | structure |
r1b4r/ppQn2k1/2p2p2/5ppP/3P4/2PB4/P4PP1/R4RK1 w - - 4 23 | b8d7 | What is the material balance in this position? | White is up 6 pawns of material | material |
6k1/5pp1/1pp5/6np/1bP1q3/4Nn2/1Q6/2K5 b - - 1 40 | e2b2 | What is the material balance in this position? | Black is up 10 pawns of material | material |
8/1p6/p1b4k/P1P1pp2/8/8/1PB2K1P/8 w - - 0 37 | Bxf5 | What is the material balance in this position? | Equal | material |
4rbk1/1p1r1p1p/qBpp2p1/2P5/p1b1PP2/PnN3PP/1P3Q1K/3RRB2 w - - 1 29 | Bxc4 | What is the material balance in this position? | Equal | material |
r2q1rk1/p2n1pp1/2b2b1p/2pp4/3P4/2N1PN2/P3BPPP/1R1Q1RK1 w - - 4 15 | Bb5 | Does Black have any isolated pawns? | Yes: a7 | structure |
r1b3k1/pp2rpp1/6np/1Np5/2P2P2/2P3P1/P3P1BP/R3K2R w KQ - 0 17 | e4 | Is the move from a2 to a4 legal? | Yes | legality |
r1bqkb1r/pp2pppp/2n2n2/3p4/3P4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 4 5 | Bf4 | Are there any open files in this position? | Yes: c | files |
r1q2rk1/2p1bpp1/2n2n1p/pp2p3/1P2P3/PQP1NN2/1B3PPP/R3R1K1 b - - 3 16 | Qe6 | Does Black have any passed pawns? | No | structure |
2r3k1/5p2/p2b3p/1p2n3/q2N4/2r5/P2R1PB1/1Q2R1K1 w - - 0 35 | Bd5 | Does Black have any passed pawns? | Yes: h6 | structure |
rnbqk1nr/3p4/p4p2/1p1R1P1p/4P1pP/2B1b3/PPP3Q1/2K2BNR w kq - 0 20 | c5e3 | Is the Black king in check? | No | check |
r4rk1/5pbp/3pbnp1/1Np5/Pq2P3/1P2BPN1/5KPP/1R1Q3R b - - 4 19 | c4 | Does White have any passed pawns? | Yes: a4 | structure |
1r1r1bk1/2q2pp1/7p/2ppn3/8/1PP1B3/2QR1PPP/3R1NK1 b - - 0 25 | Nc6 | What piece is on g6? | Empty | occupancy |
R7/2B2ppk/4b2p/pp6/8/7P/r4PP1/6K1 b - - 1 30 | f8a8 | What is the material balance in this position? | Black is up 2 pawns of material | material |
4rr1k/1p6/pN1pP2p/P1pP1p2/5R2/8/2q3PP/2B2RK1 w - - 0 31 | R4f2 | Is the Black king in check? | No | check |
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