fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqkb1r/pp1p1ppp/4pn2/2pP4/2P5/8/PP2PPPP/RNBQKBNR w KQkq - 0 4 | Nc3 | Is the White king in check? | No | check |
r4b1k/pp6/3p1n1p/3Pp3/4P1n1/1P1N2N1/1P1B2P1/2R3K1 b - - 2 26 | h5 | Is the h-file open, semi-open, or closed? | semi-open for White | files |
1r6/5kp1/RqQb1p1p/1p1PpP2/1Pp1B3/2P4P/6P1/5K2 b - - 14 45 | Qe3 | Is the move from b6 to c6 legal? | Yes | legality |
2kr3r/1pq2p2/p1nbp3/3p1bpp/3Pn3/2PNBN1P/PP2BPP1/2RQ1RK1 w - - 0 16 | Nxg5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
8/8/3k3p/p4P2/P7/2NK1N2/8/r7 b - - 2 68 | Ke7 | What piece is on c5? | Empty | occupancy |
rnbqkb1r/pp2pppp/5n2/2pp4/8/5NP1/PPPPPPBP/RNBQ1RK1 b kq - 1 4 | e6 | Does White have any passed pawns? | No | structure |
r2qkb1r/pp2pppp/2n2n2/3p1b2/3P1B2/2N2N2/PP2PPPP/R2QKB1R w KQkq - 3 7 | Qb3 | Are there any open files in this position? | Yes: c | files |
8/4k1p1/4P2p/3R1KPP/r7/8/8/8 b - - 0 67 | Ra7 | Is the move from a4 to b4 legal? | Yes | legality |
4r3/8/8/7k/4P3/4K3/8/6R1 b - - 5 3 | Kh4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qkb1r/1p3ppp/p2pp3/4n2n/4P3/1BN1BP2/PP2QP1P/R2R2K1 b kq - 0 13 | Qh4 | Is the c-file open, semi-open, or closed? | open | files |
4rr1k/pb4pB/3bq3/2p5/3p1P2/BP2P1P1/P1Q4P/4RRK1 w - - 1 22 | Bg6 | Identify any White knight outposts on the board. | a4, e5, g5 | outposts |
r1br2k1/pp2pp1p/2n2bpP/q1pP4/4P3/2N2NP1/PP1Q1P2/2R1KB1R w K - 1 17 | Bg2 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r1b1kbnr/1p1nppp1/p2p4/q2N2P1/3NP3/8/PPP1B2P/R1BQK2R w KQkq - 3 12 | b4 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
3q1rk1/pp2ppbp/4n1p1/3pP3/8/4QBP1/PPr2P1P/R1BR2K1 w - - 0 20 | Bxd5 | Is the move from h2 to f5 legal? | No | legality |
rnb2bnr/ppp2k2/1q4pp/5p1Q/2B5/1P6/PBP2PPP/R4RK1 b - - 1 14 | Be6 | Is the e-file open, semi-open, or closed? | open | files |
r3q1k1/pppn2pp/5r2/5n2/N1PP4/1P6/P2QBRPP/5RK1 b - - 1 20 | a1f1 | What is the material balance in this position? | White is up 1 pawn of material | material |
r2qkb1r/1p1bnppp/p3p3/3pP2Q/8/2NP1N2/PP3PPP/R1B2RK1 w kq - 1 11 | Ne2 | What piece is on f3? | White Knight | occupancy |
N2k1b1r/pp4pp/2np4/2p1Pq2/2P3n1/3PB3/PP4BP/R2Q1RK1 w - - 1 18 | f6g4 | What is the material balance in this position? | White is up 5 pawns of material | material |
8/ppp3pk/4q3/8/PP2P3/2P5/2K4p/2N1R3 b - - 0 40 | Qh3 | Is the move from e6 to c8 legal? | Yes | legality |
r4r1k/2q2ppp/1np1b3/p1b1pNB1/2B1P3/8/PPP1Q1PP/3R1R1K w - - 6 19 | Nxg7 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/pq1nbppp/1p2p3/3pP3/1n1P3P/2NN2P1/PP3PK1/R1BQR3 w - - 1 16 | Bg5 | Identify any White knight outposts on the board. | None | outposts |
r1bq1rk1/3n1ppp/p2p1b2/nppPp3/4P3/2PQ1N1P/PPB2PP1/RNB1R1K1 b - - 0 13 | Nb6 | Is the f-file open, semi-open, or closed? | closed | files |
r3nrk1/pR1b2p1/4p2Q/3pPp2/8/2qB2R1/P2N1PPP/6K1 b - - 0 19 | Qc1+ | What piece is on c1? | Empty | occupancy |
1kr4r/pp2q1p1/2n1p2n/3pP2B/2pP3P/2P2QP1/PP1N4/2KR1R2 b - - 0 22 | g6h5 | What is the material balance in this position? | White is up 1 pawn of material | material |
6k1/r3rp2/2B1p1pb/pR5p/P1Pp4/3P2PP/5P2/3R2K1 w - - 1 31 | Bf3 | Identify any Black knight outposts on the board. | None | outposts |
8/p4k1p/B1b5/2Ppp1Pp/7P/4K3/8/8 b - - 0 39 | h6 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
rn1q1rk1/p2p1ppp/bp6/2pQ4/2P1n3/P1B1P3/1P2NPPP/R3KB1R b KQ - 0 11 | Qe7 | Identify any Black knight outposts on the board. | None | outposts |
rnbqkb1r/ppppp1pp/5n2/6B1/3Pp3/2N5/PPP2PPP/R2QKBNR b KQkq - 3 4 | d5 | Is the move from f8 to e5 legal? | No | legality |
rn1qkb1r/pp2pppp/5n2/3p1b2/3P4/1QN1P3/PP3PPP/R1B1KBNR b KQkq - 1 6 | Qb6 | What piece is on d5? | Black Pawn | occupancy |
2rr2k1/pb1n1qp1/2pbp2p/2p2p2/3P4/1P1B1N1P/PBQ2PP1/R3R1K1 w - - 0 19 | Rxe6 | Identify any Black knight outposts on the board. | d4, d5 | outposts |
r1bq1rk1/2p1bppp/p1n1pn2/1p6/2pPP3/P1N1BNP1/1P3PBP/R2Q1RK1 w - - 0 11 | h4 | Identify any Black knight outposts on the board. | d3 | outposts |
8/2k3p1/1p1q3p/1BbQ4/P6P/1P3PP1/6K1/8 w - - 3 4 | Qa8 | Identify any Black knight outposts on the board. | None | outposts |
8/p5p1/p4b2/3p1k1p/3P1B1P/4PPK1/1P2r3/R7 b - - 1 33 | Rxb2 | Identify any White knight outposts on the board. | d4 | outposts |
rnb4r/pp1pkp1p/4pp1Q/2pP4/4P3/2N5/PqP1BPPP/1N2K2R w K - 4 11 | e5 | What piece is on g3? | Empty | occupancy |
8/3b1k2/2B1p1p1/3pP2p/2pP1P1N/K1P5/7P/8 b - - 0 21 | Bxc6 | Does Black have any passed pawns? | No | structure |
r3k2r/p2bn2p/1q2p1p1/4Pp2/8/RB6/1B2QPPP/6KR w kq - 1 22 | h4 | Is the move from e2 to e4 legal? | Yes | legality |
8/p7/3kpP2/2pb2P1/8/P2Q4/4KP2/5q1r w - - 4 39 | g2f1 | Is the White king in check? | Yes | check |
r2qrb1k/1ppb1pp1/p2p1n1p/8/3NP3/2N3QP/PPPB1PP1/R3R1K1 w - - 4 16 | Qd3 | What is the material balance in this position? | Equal | material |
2kr3r/2qb2Pp/p2pP3/2n5/1p6/5Q2/PPP4P/2KR1B2 b - - 0 22 | Rhg8 | Does Black have any isolated pawns? | Yes: d6, h7 | structure |
r1b2rk1/pp1nqppp/2pbpn2/3p4/2PP4/5NP1/PPQNPPBP/R1B2RK1 w - - 8 9 | Re1 | Are there any open files in this position? | No | files |
rnb1k2r/5pp1/pp2p2p/3p4/3N1P2/3BB3/n1PR2PP/2K1R3 w kq - 0 16 | c3a2 | Is the White king in check? | Yes | check |
2k4r/1p6/p7/3R3p/4P3/1PP2P2/2K3p1/8 w - - 0 32 | Rg5 | Does White have any isolated pawns? | No | structure |
b4rk1/pqpp1p1p/1p4p1/4Q3/3N4/3N4/6rP/B5RK w - - 0 2 | Qg7+ | Does Black have any passed pawns? | Yes: a7, b6, c7, d7, f7 | structure |
3r2k1/p4pp1/1p5p/3p4/3P3P/1PRn1NK1/P4P2/8 b - - 1 24 | Nb2 | Does White have any isolated pawns? | Yes: d4, f2, h4 | structure |
r2qkb1r/1b3ppp/p1n1pn2/1pp5/3P4/2NBPN2/PP2QPPP/R1B2RK1 w kq - 2 10 | a4 | Is the move from e2 to d2 legal? | Yes | legality |
r6k/pp6/3p1n2/3PpRbp/4P3/1P1N2N1/1P4P1/6K1 b - - 3 30 | Rg8 | What is the material balance in this position? | Equal | material |
br2r1k1/3n1pb1/6pp/1Pn1p3/1pN1P3/6PP/1B1N1P2/R3RBK1 w - - 6 34 | f3 | Does Black have any isolated pawns? | Yes: b4 | structure |
2r3k1/p2q2p1/4p1Qp/8/6nP/PbN3P1/KP6/8 w - - 0 36 | d5b3 | Is the White king in check? | Yes | check |
r1b2rk1/pRp2q2/P1Pp1npb/3Pp2p/Q3P3/2NN2PP/3nB1K1/4B2R b - - 2 32 | Ng4 | Does White have any isolated pawns? | Yes: a6 | structure |
r1b1k2r/p1p2ppp/2p5/4p1bQ/4P1PP/2P1nP2/PPq2K2/RN4NR w kq - 3 14 | d1c2 | Is the White king in check? | Yes | check |
6k1/p6p/6p1/3b4/2p5/4R3/PP4PP/6K1 w - - 1 31 | Ra3 | What piece is on a2? | White Pawn | occupancy |
1r2r3/p6p/3k1np1/P4p2/2BK4/5P2/1R4PP/1R6 b - - 4 29 | Rbd8 | Is the Black king in check? | No | check |
r1r3k1/4Rpp1/p6p/8/2n4P/2P3P1/R2BPPK1/8 b - - 0 31 | a5 | Identify any Black knight outposts on the board. | None | outposts |
4n3/2pqn1k1/1p3pp1/p3p2p/P1N1P2P/1PP1NPP1/4Q1K1/8 b - - 0 29 | Kf7 | Identify any Black knight outposts on the board. | None | outposts |
rn2k2r/ppp3pp/4b3/2b2p2/2B5/2P5/P3NPPP/R3K2R w KQkq - 0 15 | Bxe6 | Does Black have any passed pawns? | No | structure |
r3r1k1/2q2pb1/p1Np1np1/P2P3p/2B5/Q4p2/1P4PP/1K1RR3 w - - 0 24 | Qxf3 | What piece is on e4? | Empty | occupancy |
8/8/R2k2p1/P4b2/r1p1n3/2R1K1P1/4N3/8 b - - 0 53 | Ke5 | Identify any Black knight outposts on the board. | b3, d3 | outposts |
5rk1/p1qB1p1p/1pP1p1p1/n7/4P2P/P1b2N2/4QPP1/3R2K1 w - - 2 24 | Rc1 | Identify any Black knight outposts on the board. | a5, c5 | outposts |
rnbqk2r/pp1p1ppp/4pn2/2b3B1/4N3/8/PPP1PPPP/R2QKBNR b KQkq - 1 5 | Nxe4 | What is the material balance in this position? | Equal | material |
r1b1r1k1/pp3ppp/8/q1P5/3pn3/P2Q1NP1/4PPBP/R3K2R w KQ - 1 17 | d8a5 | Is the White king in check? | Yes | check |
2rq2rk/3b1p1N/4pN2/p1bpn3/7Q/3B4/1PP2PPP/3R1RK1 b - - 11 27 | Nf3+ | Are there any open files in this position? | No | files |
r3r1k1/1p1n1ppp/p4n2/6B1/Pq6/8/2P1NPPP/R2QK2R w KQ - 0 16 | a5b4 | Is the White king in check? | Yes | check |
4r3/2p1BN2/p5pk/1p3n1p/8/1B1P3P/PPP2PP1/4R1K1 b - - 0 31 | g5f7 | Is the Black king in check? | Yes | check |
3rr3/pb4k1/1ppb1pn1/6p1/3PP2p/P5P1/1P1N1BBP/2R1R1K1 w - - 0 29 | e5 | What piece is on c5? | Empty | occupancy |
r3kb1r/pp2qnpp/2p1N3/4P3/1P2p3/2B4B/P1PQ1P2/3RK3 b kq - 4 20 | Nd8 | Does White have any passed pawns? | Yes: e5 | structure |
r2q1r1k/ppp1n2p/3pPbp1/4pp1n/1PP1P3/2N2PP1/P3B2P/R1BQR1K1 w - - 1 16 | c5 | What piece is on e5? | Black Pawn | occupancy |
r1b5/ppNp1Bpr/3k4/8/3n4/8/PP4PP/2R3K1 b - - 7 24 | d5c7 | What is the material balance in this position? | Black is up 5 pawns of material | material |
1r6/4k1p1/p2Np1b1/1p1pn2p/7P/P5RB/6P1/3R2K1 b - - 1 32 | Kxd6 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/1b4pp/p7/8/Np2P3/1P3Nbq/7P/R1BQ1RK1 w - - 0 24 | Qe2 | Identify any White knight outposts on the board. | d5 | outposts |
r3kb1r/p2q1pp1/npp1p2p/3pPn2/3P2Q1/P4N2/1PPBNPPP/R3K2R b KQkq - 5 13 | c5 | What is the material balance in this position? | Equal | material |
5rk1/1ppb1ppp/8/1pbNp3/4n3/8/1P1K2PP/r1B2R2 w - - 0 24 | f2e4 | Is the White king in check? | Yes | check |
r3k2r/ppp5/2b2p1p/6p1/3Bn3/2P2N2/P1P2PPP/3R1RK1 b kq - 1 17 | Kf7 | What piece is on b8? | Empty | occupancy |
r2q1rk1/pp3ppp/2n1pn2/1B1p1b2/1b1P1B2/1QN1PN2/PP3PPP/R3K2R w KQ - 4 10 | Bxc6 | Is the White king in check? | No | check |
r1bqnrk1/p3ppbp/1pp3p1/2p5/4PP2/2NP1N2/PPP3PP/R1B1QRK1 w - - 2 10 | f5 | What is the material balance in this position? | Equal | material |
r1bqk1nr/ppppbppp/8/n7/3QP3/2P2N2/P3BPPP/RNB1K2R b KQkq - 0 8 | Nf6 | Does White have any passed pawns? | No | structure |
r4rk1/p1n1nppp/3qp3/2pp4/PP2P3/2BQ1P1N/2P3PP/R4RK1 w - - 1 15 | Rab1 | Identify any White knight outposts on the board. | a5 | outposts |
r6r/pQ1nb1p1/2pk3p/4p3/3P4/2P5/P1P3PP/1R4K1 w - - 1 21 | Rd1 | Is the move from b7 to b6 legal? | Yes | legality |
1k6/8/8/1PpQ4/K1P1Pp1p/P1q2PbP/6P1/8 w - - 7 63 | b6 | What piece is on c5? | Black Pawn | occupancy |
r2qkb1r/1b1npp1p/p2p1np1/1p6/3NP3/1BN1BP2/PPP3PP/R2QK2R w KQkq - 4 10 | a4 | Is the move from e4 to e5 legal? | Yes | legality |
8/5pkp/3R2p1/1P2p3/1P6/2r3P1/5PKP/8 b - - 0 30 | Rb3 | Is the move from c3 to b3 legal? | Yes | legality |
rnbqkbnr/1p2pppp/p1p5/3p4/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 4 | e3 | Is the d-file open, semi-open, or closed? | closed | files |
r1bqr1k1/pp4bp/3p2pn/PB1Ppp2/8/NQP5/1P3PPP/R1B2RK1 b - - 1 16 | Rf8 | Does White have any passed pawns? | No | structure |
2bq1rk1/3n1p1p/6p1/4P3/1p2nP1P/1P6/N1p3P1/1N1RKBQR w K - 0 24 | Qd4 | Is the move from h1 to h2 legal? | Yes | legality |
rnb1k2r/pp1ppp1p/6p1/2pP4/3q4/4R3/P1P2PPP/2BQKB1R w Kkq - 2 12 | Qe2 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
rn2k2r/pp1b1ppp/4pB2/qB6/1b1NP3/2N5/PP3PPP/R2QK2R b KQkq - 0 10 | Bxb5 | Is the move from b4 to e7 legal? | Yes | legality |
r4rk1/pp1b2pp/1qnbpn2/3p2B1/3P4/P1NB1N2/1P3PPP/R2Q1RK1 b - - 2 14 | Qxb2 | What piece is on a6? | Empty | occupancy |
rn1q1rk1/pb2bppp/1pp5/5N2/8/2n3P1/PP3PBP/R1BQ1RK1 w - - 0 14 | Qg4 | Identify any White knight outposts on the board. | None | outposts |
r1br2k1/ppq1pp1p/2n3p1/2p1b3/2BPPB2/2P5/P3NPPP/2RQ1RK1 w - - 10 13 | Bg3 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/p1pp1ppp/1p3b2/5n2/3P1B2/2P5/PP2RPPP/RN1Q1BK1 b - - 0 12 | Ba6 | Is the move from h7 to f8 legal? | No | legality |
r2q3r/1p3pk1/2npb1pp/p1bNp3/4P3/2P1NP2/PP1Q2PP/1K1R1B1R b - - 0 17 | a4 | Is the White king in check? | No | check |
8/5p2/k6K/P2r1p1p/7P/R5P1/8/8 w - - 2 72 | Kg5 | What is the material balance in this position? | Equal | material |
5r2/3bp1k1/p2p1ppp/2pPn3/2N1P1PP/Pr3P2/1P2BK2/1R5R b - - 0 24 | Rfb8 | Is the move from h6 to g6 legal? | No | legality |
r1bq1rk1/pp3ppp/2pp4/3N1B2/3P4/8/PPP2PPP/2RQR1K1 b - - 0 15 | Bxf5 | Is the e-file open, semi-open, or closed? | open | files |
r1rq1bk1/1n1b1p1p/3p1np1/1p1Pp3/1Pp1P3/2P1BNNP/R2Q1PP1/1B2R1K1 w - - 2 24 | Ba7 | Is the move from d2 to d1 legal? | Yes | legality |
r1bqk2r/p1p2ppp/1p1p1n2/4n3/1PP5/P1Q1PN2/3P2PP/R1B1KB1R b KQkq - 0 11 | Ne4 | What is the material balance in this position? | Equal | material |
2bq1rk1/3n1p1p/6p1/4P3/1pP1nP1P/8/r3N1P1/1N1RKBQR b K - 0 22 | Qa5 | Identify any White knight outposts on the board. | b5, d5, d6 | outposts |
Rrk5/5p1r/8/1q1p4/1p1B4/2p3P1/1P3PBP/4R1K1 w - - 4 31 | Ra7 | Is the Black king in check? | No | check |
r1b2k2/ppp2pp1/1b5p/3rn3/2pNN3/1PP3BP/P2R1PP1/3R2K1 b - - 0 22 | f5 | Are there any open files in this position? | Yes: d, e | files |
r5k1/1b4p1/1B2p1qp/P1P5/4p3/5P2/2Q3PP/5RK1 b - - 1 29 | Bc6 | Is the White king in check? | No | check |
8/1b1nk2p/p5p1/2p2p2/2P5/P1PR1NPP/B5PK/2r5 b - - 0 9 | Bxf3 | Does White have any isolated pawns? | Yes: a3, c3, c4 | structure |
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