fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
1k1r1br1/1pp2pq1/1p1p2np/3N2p1/P2PP1B1/6B1/2PQ2PP/R5K1 w - - 4 25 | a5 | Identify any Black knight outposts on the board. | a5 | outposts |
r2q1rk1/pp1bpp1p/6pQ/1p2n1N1/8/1P5P/P1P2PP1/R3K2R b KQ - 1 16 | Qa5+ | What piece is on e5? | Black Knight | occupancy |
4n2Q/pb1p1kp1/4qp1B/1p6/3P3R/P5N1/6rP/2R2K2 b - - 1 25 | Qb3 | What is the material balance in this position? | White is up 3 pawns of material | material |
rr4k1/b5q1/P2p3p/3P2p1/1PB2p2/5P2/P1N3QP/1R5K w - - 2 33 | a4 | Identify any White knight outposts on the board. | a5 | outposts |
r2q4/1p5p/3nRr1k/3P2p1/P1P5/5P1Q/7P/1R4K1 b - - 2 34 | Kg7 | Does Black have any isolated pawns? | Yes: b7 | structure |
rn3rk1/pb1pb1pp/4p3/2pnP3/2N4q/N7/PP2BPPP/R1BQ1RK1 b - - 6 12 | Nc6 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
5R1k/6R1/7P/p7/3P4/2N5/PP4PK/8 b - - 0 39 | d8f8 | Is the Black king in check? | Yes | check |
r3N1k1/6bp/1P1p2p1/p2bp3/4n3/4B2P/1PP2PP1/5RK1 w - - 0 25 | Nc7 | Are there any open files in this position? | No | files |
1r4k1/4ppbp/3p2p1/q1pP4/2n1P3/PrN3P1/RPQ2PKP/2BR4 w - - 5 21 | Rd3 | Are there any open files in this position? | No | files |
3rr3/1bqn1kBQ/ppp1p1p1/6b1/3P4/8/PPP2PPP/3R2K1 b - - 3 22 | Nf8 | What is the material balance in this position? | Black is up 9 pawns of material | material |
3rr1k1/pp1q1pb1/1n3np1/3p1b1p/3P1N2/1QN1BB1P/PP3PP1/3RR1K1 w - - 6 19 | Rc1 | Are there any open files in this position? | Yes: c, e | files |
r4rk1/pbqp2pp/1p1b1p2/4p3/2PP1n2/PP6/1B1N1RPP/R2Q1BK1 b - - 2 18 | e4 | Identify any Black knight outposts on the board. | None | outposts |
5k2/p6R/3p2p1/2p5/4qP2/8/PBP3P1/5NK1 b - - 0 41 | Qxc2 | Is the move from e4 to g2 legal? | Yes | legality |
r1b1kb2/pppp4/2n2pN1/4p2r/2B3P1/2P5/PPP4P/R1B1K2R b KQq - 0 13 | Rh3 | Does Black have any passed pawns? | Yes: e5 | structure |
2b4r/2p5/1kp2p2/2N3p1/1P2Pn2/4R3/3B1P1P/6K1 w - - 4 37 | Ra3 | Does White have any isolated pawns? | Yes: b4, h2 | structure |
8/2R2kp1/1r1P3p/5b2/3nNPpP/6P1/5N2/5K2 b - - 1 40 | Kf8 | What is the material balance in this position? | White is up 1 pawn of material | material |
4r1k1/5ppp/r1nq4/3p3n/pP1P3P/P4P2/1KP1N3/R1BQ3R w - - 0 21 | Qd3 | Does White have any isolated pawns? | Yes: f3, h4 | structure |
4r1k1/2p2bbp/p1n3p1/1p3p2/8/2NN1P2/PPP3PP/1K1R1B2 b - - 1 24 | Bd4 | Is the move from a6 to e1 legal? | No | legality |
2kr3r/pp1b4/1qnbpp1n/3p4/1P1P4/P1N2N2/2B2PPP/R1BQ1RK1 b - - 4 15 | Kb8 | What piece is on f7? | Empty | occupancy |
r1bqkbnr/pp1n1ppp/4p3/2PpP2Q/8/5N2/PPP2PPP/RNB1KB1R b KQkq - 3 6 | Ne7 | Is the move from a7 to h4 legal? | No | legality |
r1bq2k1/p2n1rpp/3n4/3Pp1R1/1p2P3/2N1B3/BPQ2P1P/2K3R1 w - - 0 21 | Nb5 | What is the material balance in this position? | Equal | material |
3nk3/1B3p1p/6p1/Pp2b3/2P4P/8/3B1PP1/6K1 w - - 0 34 | a6 | Does White have any passed pawns? | Yes: a5 | structure |
1k6/5p1p/PKR1r1p1/8/6P1/7P/8/8 b - - 2 51 | Re8 | Identify any Black knight outposts on the board. | None | outposts |
3bbk2/5p2/2pp1p2/p3pP2/P3P2Q/1BN5/KPP3PP/6q1 w - - 1 30 | Qh8+ | Are there any open files in this position? | No | files |
6q1/3rkrp1/ppnpbpR1/7R/P1P1PB2/6Q1/4B1P1/6K1 w - - 3 39 | a5 | Is the Black king in check? | No | check |
2b1rqk1/p6p/1p4p1/2pP4/2P1p3/1P4QP/PB4P1/4R1K1 w - - 0 29 | Qc3 | What is the material balance in this position? | Equal | material |
6r1/2pp3p/pp3k2/4Pp2/P2P4/2P2K2/1P5P/R7 b - - 0 29 | Ke6 | Identify any White knight outposts on the board. | f6 | outposts |
r1bq3r/pppp1k1p/2n3p1/1BbQ4/4n3/8/PPPP1PPP/RNB2RK1 b - - 1 8 | Kg7 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
5rk1/4bppp/pq1pp3/6P1/1p1NbP1P/6R1/PPPQ4/1K1R4 w - - 0 24 | Nf3 | Identify any White knight outposts on the board. | None | outposts |
6k1/4qr1p/2p4B/p2p1P2/3Pr2b/2P5/PP4Q1/R4RK1 b - - 0 32 | g4f5 | Is the Black king in check? | Yes | check |
r4rk1/1p2ppbp/1p3np1/n2p1b2/3P1B2/2P2N1P/PP1NBPP1/R3K2R w KQ - 0 13 | g4 | What piece is on e7? | Black Pawn | occupancy |
4r1k1/p5b1/2p5/6pK/3P1p2/1P3q2/P7/7N w - - 0 43 | e2f3 | Is the Black king in check? | No | check |
8/6K1/8/8/8/7Q/6Q1/k7 w - - 9 69 | Qhh1# | What piece is on g2? | White Queen | occupancy |
Q4k1r/4npp1/p6p/qp6/4R3/4B2P/P4P1P/K6R b - - 0 23 | c6a8 | Is the Black king in check? | Yes | check |
r1bqk2r/ppp2ppp/2np1n2/2b5/2B1P3/2N2N2/PP3PPP/R1BQ1RK1 w kq - 0 8 | Bg5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2q1rk1/2p1bppp/p2pbn2/1p1Np3/1P1nP3/P2P1N2/B1P2PPP/R1BQ1RK1 w - - 3 13 | Ng5 | What piece is on a6? | Black Pawn | occupancy |
r1bqk2r/3nbppp/p1n1p3/1p1pP3/3p1P2/P1P2NN1/1P4PP/R1BQKB1R w KQkq - 0 11 | cxd4 | Are there any open files in this position? | No | files |
2k5/p7/1pp5/3pp3/3PK3/5r2/PPP3b1/5r2 w - - 0 40 | d7d5 | Is the White king in check? | Yes | check |
6k1/8/3p2pP/p2Pnp2/1p1K3P/1P5R/q3BQ2/3R4 b - - 1 44 | Qc2 | Identify any Black knight outposts on the board. | b4, e4, f5, h5 | outposts |
r1bqk2r/3nbppp/p3p3/2p1P3/N1Pp4/3B4/PP1BQPPP/R4RK1 b kq - 2 13 | Bb7 | Does Black have any isolated pawns? | Yes: a6 | structure |
1nkr3r/1ppq1p1p/3p4/1P2p2b/2B1P1n1/1QPPPN2/6PK/RN3R2 w - - 0 17 | f6g4 | Is the Black king in check? | No | check |
8/8/3BK1p1/1PRn3p/4k3/8/6rP/8 b - - 3 67 | Rd2 | Identify any Black knight outposts on the board. | f5, h5 | outposts |
2r1k2r/4p2p/p5pn/1ppNR3/8/8/PPP3PP/2KR4 b k - 0 20 | Ng8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rn1q1rk1/pb4pp/1pp1p3/3pPp2/1bPP4/1P1BPN2/PB4PP/R2Q1RK1 b - - 2 14 | Na6 | Is the Black king in check? | No | check |
1r4k1/4bppp/2n1pn2/2Pp4/N1bP4/5BP1/4NP1P/B3R1K1 b - - 0 20 | Nd7 | Are there any open files in this position? | Yes: a, b | files |
r1n4k/6b1/8/1NpP1p2/2P1p3/PK2P3/4QP1q/5R2 w - - 2 42 | Qd1 | Is the move from f2 to h5 legal? | No | legality |
r1bqr1k1/4bppp/p2p1n2/npp1p3/4P3/2PP1N2/PPBN1PPP/R1BQR1K1 w - - 2 12 | Nf1 | What is the material balance in this position? | Equal | material |
3brrk1/1pp2pp1/p1qp2bp/4p3/4P3/1QPPNN1P/PP3PP1/R3R1K1 w - - 6 17 | Qd5 | Is the a-file open, semi-open, or closed? | closed | files |
2k4r/pp3ppp/2n1b3/8/Qb6/2N1P3/PP1KNqPP/2R2B1R b - - 1 15 | Bf5 | What piece is on d2? | White King | occupancy |
4rrk1/pp3ppp/1b3n2/3p4/2B2Bq1/1NP5/PP2NP2/R2QRK2 b - - 2 20 | Bxf2 | Does Black have any passed pawns? | Yes: h7 | structure |
r1b1r3/pp1n1ppk/1q2p3/1N1pP2P/1n1p1PQ1/8/PPP3P1/2KR1B1R w - - 0 15 | Kb1 | Is the Black king in check? | No | check |
r2q1rk1/pb3ppp/1pn1pn2/8/3P4/P1N1B1P1/1P2BP1P/R2Q1RK1 w - - 2 14 | Bf3 | Is the Black king in check? | No | check |
1r3rk1/q3ppbp/3p2p1/PPpP4/8/5NP1/Q2B1P1P/1b3BK1 w - - 0 26 | Qxb1 | Does Black have any isolated pawns? | No | structure |
5k2/2N2b1r/R5p1/4p3/p3P3/P1P5/2P5/3K4 b - - 1 85 | g5 | What piece is on f7? | Black Bishop | occupancy |
8/2k1n3/1p4p1/pKp2p1p/P4P1P/2P2BP1/1P6/8 w - - 24 57 | Ka6 | Does Black have any passed pawns? | No | structure |
r1b3r1/pp1n1kpp/5n2/8/1b2Pp2/3Q4/P1P3PP/R1B1K2R w KQ - 0 17 | Bd2 | Does Black have any passed pawns? | No | structure |
7r/ppp3pp/1b2Bpk1/8/8/3K2P1/Pr5P/RN2R3 w - - 6 22 | Nc3 | What is the material balance in this position? | Equal | material |
2kr3r/1p3ppp/p1n5/2N1p3/2b3Pb/1PN1P2P/P1P3B1/1R4KR b - - 4 19 | Bg5 | What piece is on b6? | Empty | occupancy |
2r3k1/5pbp/r2n2p1/pbpPp3/1p2P3/4BPPP/PP2NRB1/4R1K1 b - - 2 23 | f5 | What piece is on h1? | Empty | occupancy |
r1b1kqnr/pp3pbp/n2p4/3Np1B1/2B5/5Q2/PPP3PP/R4RK1 w kq - 2 15 | Bb5+ | Identify any Black knight outposts on the board. | e5 | outposts |
2b1r3/p3q1kp/1pp3p1/2p1p3/2N1P3/1P1P3P/P1P2QP1/5RK1 b - - 12 32 | Rd8 | Is the move from g6 to b7 legal? | No | legality |
r5k1/p3qp2/1p2pn2/2p3B1/3nP3/P7/1P3PPP/2Q1KR2 w - - 0 20 | Qf4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
5k2/p3qpp1/1pB1pn1p/8/8/P1P3P1/1P1Q1PP1/6K1 b - - 0 24 | Qc7 | Is the move from e6 to e5 legal? | Yes | legality |
r5k1/5pPp/1B4P1/4p3/2r1b3/b7/7R/R2K4 b - - 0 36 | fxg6 | What piece is on e2? | Empty | occupancy |
r1q1kbnr/1p1b1ppp/p3p3/3pP3/3n1PPP/2N1B3/PPP1B3/R2QK2R w KQkq - 0 12 | Qxd4 | Identify any White knight outposts on the board. | None | outposts |
8/6k1/2p1K3/p1p1P3/P1P2P1b/8/8/8 w - - 0 52 | f5 | Is the White king in check? | No | check |
1r1k3r/3bnppp/p1pNp3/1pQ1P3/8/2P5/5PPP/5RK1 w - - 5 20 | Nxf7+ | Are there any open files in this position? | Yes: d | files |
3r1rk1/p1p4p/5b2/1PP1pb1q/2P1Np2/3N1P2/P5P1/1RBQ1RK1 w - - 3 23 | Qe2 | Does Black have any isolated pawns? | Yes: a7, c7, h7 | structure |
r3r1k1/p2b1nb1/1p1p1nq1/2pP1p2/PP3P1p/2N1BB1P/3Q1NP1/1R3RK1 w - - 3 23 | a5 | What piece is on b1? | White Rook | occupancy |
5rk1/1p1b2q1/p7/3P3p/P1r2Bp1/4R1P1/1P1Q4/5RK1 b - - 1 30 | Qd4 | Does White have any isolated pawns? | Yes: d5, g3 | structure |
4r1k1/p4pp1/3R3p/2p5/8/4B3/PPb2PPP/6K1 w - - 0 25 | Ra6 | Is the e-file open, semi-open, or closed? | open | files |
r1b1k2r/pp3pp1/2n2q2/2pp3p/3P4/P1P1P1P1/5PBP/R2QK1NR b KQkq - 1 11 | Bg4 | Does White have any isolated pawns? | Yes: a3 | structure |
5r1k/pp6/4q2K/5pR1/8/1P4P1/7P/8 w - - 1 42 | e4e6 | Is the White king in check? | Yes | check |
r1bq1rk1/ppp2ppp/2nb4/3np3/8/2PB1N1P/PP1PNPP1/R1BQ1RK1 w - - 1 10 | Bc2 | Does White have any passed pawns? | No | structure |
3r2k1/5pp1/p3p2p/1p6/1P2P3/r4N2/3K1PPP/7R w - - 2 32 | a8d8 | Is the Black king in check? | No | check |
rnbqk2r/ppp2p1p/5n2/3p4/3PPB2/2Q5/PPP3PP/2KR1B1R w kq - 1 10 | Bd3 | Are there any open files in this position? | No | files |
2nr1bnr/3k1p2/3p1qp1/1B1Pp2p/1P2P3/4B2P/5PP1/RNQ1R1K1 b - - 3 21 | e2b5 | Is the Black king in check? | Yes | check |
r1b1nrk1/5ppp/pq1pp3/1pb2P2/3NP2Q/2NBBP1P/PPP5/6RK w - - 3 18 | Rxg7+ | Are there any open files in this position? | No | files |
6k1/2p2qpp/p1n1n2r/1p1p4/P4PR1/2PN1r2/1PB1R2P/4Q2K w - - 0 30 | Nc5 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r4rk1/ppqn1p2/2p1RQp1/6Np/2BP4/8/P1P2PPP/6K1 w - - 1 21 | Qxg6+ | Identify any Black knight outposts on the board. | None | outposts |
Q2r1b1r/2pk1ppp/2B5/4p3/4N1bq/8/PP1P1PPP/nNB2K1R b - - 5 17 | d5c6 | Is the Black king in check? | Yes | check |
2B2kr1/1Q6/nPpp1p2/4p3/P1P1P2B/3q1P1p/7N/1R4bK w - - 1 36 | Bxf6 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
5n1b/2pp2k1/p5P1/1P3KP1/8/8/P7/8 w - - 1 3 | bxa6 | Is the move from f5 to e4 legal? | Yes | legality |
3R4/5b2/5p2/P5k1/2PN3p/1P6/5K2/1r6 b - - 2 63 | Rb2+ | Is the White king in check? | No | check |
8/kp6/6p1/p2pPn2/b1pP1P2/P1PN4/2P2Q2/1qBKR3 b - - 0 42 | cxd3 | Does White have any isolated pawns? | Yes: a3 | structure |
8/8/8/6p1/3KP1k1/8/8/8 w - - 0 72 | e5 | Is the move from d4 to f7 legal? | No | legality |
r2qkb1r/ppp2ppb/4p3/3p3P/3P4/N1NnPP1P/P7/R1BQKB1R w KQkq - 1 14 | b4d3 | Is the Black king in check? | No | check |
8/8/8/8/1KR5/8/1k6/4q3 w - - 22 85 | e4e1 | Is the White king in check? | Yes | check |
1rb2rk1/4ppbp/p2p2p1/1pn5/2nNP2P/5P2/PP4P1/1K1RQB1R b - - 2 17 | Na4 | What is the material balance in this position? | White is up 2 pawns of material | material |
r4r2/p2kp3/p1p1N2Q/3p4/6P1/5P2/P3q1KP/R6R w - - 5 28 | e5e2 | Is the White king in check? | Yes | check |
r2qk2r/p1bbnppp/2p1p3/3pP3/1P1N1P2/P1N1B3/2P3PP/R2QK2R w KQkq - 1 14 | Na4 | Identify any White knight outposts on the board. | a5 | outposts |
r1b2rk1/ppp4p/2np2pb/4n3/2P1Pp1q/1PNB1P2/PB2N1PP/R2Q1RK1 b - - 1 15 | g5 | What is the material balance in this position? | Equal | material |
rn1q2k1/pbp3pp/1p1pp2r/5p2/1BPPn3/3BP1P1/PP1NQP1P/R4RK1 b - - 0 13 | Qh4 | Is the e-file open, semi-open, or closed? | closed | files |
4brk1/1pn1q1rp/p1p1p1p1/2PpN1P1/PP1P1PN1/5R2/2Q4P/5RK1 w - - 3 33 | Nh6+ | What piece is on h5? | Empty | occupancy |
rnb1k2r/pp2qppp/2p5/3PQ3/2B2P2/2NP4/PPP3PP/R3K1Nn w Qkq - 1 11 | d6 | Is the e-file open, semi-open, or closed? | open | files |
3qr1k1/r4pp1/p1bp1b1p/1p2p2Q/n3P3/P1P3PP/BP1N1P1N/R3R1K1 w - - 1 24 | Rab1 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1b2rk1/pp1n1qp1/2nbp2p/3p4/3P4/3BNN2/PP3PPP/R1BQR1K1 w - - 4 14 | Ng4 | Is the White king in check? | No | check |
r2r2k1/5pp1/6np/qppP1N2/p1BnPP2/P5NP/1P3QP1/3R2K1 w - - 0 33 | Nxd4 | What piece is on d5? | White Pawn | occupancy |
rnb1k2r/ppq1nppp/4p3/2ppP3/3P3P/P1P5/2P2PP1/R1BQKBNR w KQkq - 1 8 | Nf3 | Are there any open files in this position? | No | files |
r4rk1/5pbn/3N2p1/p3q1Pp/2B1P2P/2p1p1N1/PP2Q3/1K1R3R b - - 0 24 | Rab8 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
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