fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rqb2rk1/5pp1/p2b4/2N2Pp1/1P1pQ3/P4N2/5P1P/1R1R2K1 b - - 0 25 | Ra7 | What piece is on g6? | Empty | occupancy |
5kB1/7P/p4b2/1pr2p2/5P2/8/PPP5/1K4R1 w - - 1 34 | Bb3 | Is the move from g1 to b2 legal? | No | legality |
3b1k2/p5pp/q1p1p3/2P5/Pn1PN3/R3P3/2K3PP/8 w - - 1 28 | d3b4 | Is the White king in check? | Yes | check |
r1bqk2r/pp1n1ppp/3bp3/1Bp1N3/3P2Q1/2P5/PP3PPP/R1B1K2R b KQkq - 5 10 | Kf8 | What piece is on f6? | Empty | occupancy |
r4rk1/pp2b1p1/1q2pn1p/2p4P/4N3/8/PPPBQP2/1K1R3R w - - 0 20 | Nc3 | Does Black have any isolated pawns? | Yes: e6 | structure |
2r5/pq2p2Q/3p1k2/1p1P1p2/3r4/5P2/PPP5/1K2R2R w - - 0 26 | Re6+ | Identify any White knight outposts on the board. | None | outposts |
r3kb1r/2qnpppp/b1p2n2/1pPp4/1p1P4/P1N1PN2/3B1PPP/2RQKB1R w Kkq - 0 11 | axb4 | What piece is on b2? | Empty | occupancy |
r1bq1rk1/3nppb1/p1p3p1/6P1/3PB3/4PN2/PPQ2PP1/1K1R3R b - - 0 16 | Rb8 | Does Black have any isolated pawns? | Yes: a6, c6 | structure |
rkbrnqnb/pppppp1p/6p1/8/8/6P1/PPPPPP1P/RKBRNQNB w KQkq - 0 2 | a4 | Is the b-file open, semi-open, or closed? | closed | files |
r4rk1/1p4p1/2p4p/2PqRn2/p2p4/P4N1P/1PQ2PP1/4R1K1 b - - 8 30 | Qf7 | What is the material balance in this position? | Equal | material |
r3k2r/1q1nbppb/p2p1n1p/1p1Pp2P/4P1P1/PNN1BP2/1P2Q3/2R1KB1R b Kkq - 0 17 | Bd8 | What piece is on c3? | White Knight | occupancy |
8/8/4p3/bP1p1p2/p2P4/P2kP3/2N5/2K5 b - - 8 69 | Kc4 | What piece is on h6? | Empty | occupancy |
r1b1k1nr/pppp1ppp/2n2q2/8/1b1NP3/4B3/PPP2PPP/RN1QKB1R w KQkq - 3 6 | f8b4 | Is the White king in check? | Yes | check |
r4r1k/pp4b1/3p3p/1P2p3/Q3P2q/3PB1nb/P1NR1RB1/6K1 w - - 2 26 | Qb4 | Is the move from g1 to h2 legal? | Yes | legality |
5k2/pp1Pq3/n4p1r/2Pp2pP/8/Q3P3/PP3R2/2K2R2 b - - 0 32 | Kf7 | Are there any open files in this position? | No | files |
4r1k1/2rb1pb1/1q1p2pp/1p1Pn3/1Qn1P1PP/2N3RB/4NPK1/2B2R2 b - - 0 27 | Qa5 | What piece is on g2? | White King | occupancy |
3q2k1/2p4p/6p1/1PQ2p2/2P5/2bP3P/5PP1/r2R2K1 w - - 1 27 | a3a1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3rk2r/2pb1p2/p1pb1q2/4p1pp/BP2P3/P2R2Q1/2P1NPPP/3R3K b k - 0 20 | g4 | Identify any White knight outposts on the board. | a5, c5 | outposts |
r2qr1k1/pp1nbppp/2p1pn2/4N3/2PP1B2/2N4P/PP2QPP1/R2R2K1 w - - 7 17 | Rd3 | What piece is on e7? | Black Bishop | occupancy |
6k1/5pp1/1p5p/6r1/P3pN2/1Q2bn1P/1B1r1PP1/5K2 w - - 0 43 | fxe3 | Is the move from f4 to b1 legal? | No | legality |
8/6R1/1p5k/2b2PBp/4K2P/6P1/p4r2/8 b - - 2 48 | f6g5 | Is the Black king in check? | Yes | check |
8/1kn5/8/1b6/1K6/1P1p4/2r5/3Q4 b - - 5 78 | Nd5+ | Identify any Black knight outposts on the board. | None | outposts |
rnbqk2r/ppp1ppbp/3p1np1/8/2PPP3/2N2N2/PP3PPP/R1BQKB1R b KQkq - 1 5 | O-O | Are there any open files in this position? | No | files |
1q1rk2r/4b2p/pN2Q1p1/2p5/8/1P4P1/P4PbP/R2R2K1 w k - 0 22 | Kxg2 | Is the move from d1 to h3 legal? | No | legality |
r3k2r/pppq1pb1/2npbnpp/4p3/2B1P3/2NPBPQ1/PPP1N1PP/R3K2R b KQkq - 1 11 | d5 | Identify any White knight outposts on the board. | None | outposts |
r1q1k1r1/pp1nbpPp/4p3/2nP4/bpP5/5QN1/PB1NBPP1/2R1K2R w Kq - 3 18 | Qxf7+ | What piece is on g4? | Empty | occupancy |
rnbqkbnr/ppp1pppp/8/8/4p3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 0 3 | d5e4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2r2rk1/1p3pp1/1q2b2p/p1bpPn2/8/P2B1N2/1PRBQPPP/5RK1 b - - 7 19 | Nd4 | Identify any White knight outposts on the board. | d6 | outposts |
r1b2qk1/1p2rp2/p3pp1Q/3p4/3P4/2PBN2P/PP4P1/R5K1 w - - 1 22 | Qxf6 | Does White have any isolated pawns? | No | structure |
2b2r1k/5pbp/3p1qp1/2p5/2B1PP2/P5PP/1r3Q1N/3RR1K1 w - - 0 24 | e5 | Are there any open files in this position? | Yes: b | files |
2r1k2r/3nb1pp/pp1ppq2/8/2P5/2N3P1/PP2QPKP/R1B2R2 w k - 1 15 | Re1 | Are there any open files in this position? | No | files |
Q1bqk2r/p3bpp1/5n1p/np2p3/4N3/8/PPPP1PPP/RNB2RK1 b k - 1 11 | Qd7 | Is the Black king in check? | No | check |
r2qk2r/1b1nbppp/p1p1pn2/1p6/P1pPP3/2N2NP1/1PQB1PBP/R4RK1 b kq - 2 11 | O-O | Is the White king in check? | No | check |
rnb2Q2/pp1p3p/1k2p3/1N6/4P3/8/P1PN1PrP/2qBK2R w K - 5 20 | a4 | What piece is on h5? | Empty | occupancy |
5rk1/4R1p1/pqpp3p/2bp1b1Q/5P2/2P4P/P2B2PK/4R3 w - - 0 32 | Rxg7+ | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
r1b1r1k1/3pPpb1/2n2B1p/qpp3p1/8/2N2N2/PP1QPPPP/R3KB1R b KQ - 0 14 | Bxf6 | Is the move from g8 to c7 legal? | No | legality |
rn2kbnr/1p3ppp/p3p3/2p5/P1B2PPq/2NP1Q2/1PPB3P/R3K2R w KQkq - 1 12 | d8h4 | Is the White king in check? | Yes | check |
r1b2rk1/ppq1npp1/4p1np/3pP2Q/2pP4/P1PBBN2/2P2PPP/R3K2R w KQ - 0 14 | Be2 | Identify any White knight outposts on the board. | None | outposts |
1r2k3/5RR1/1p1r3p/p1p5/8/2B2P2/PP3KPP/8 w - - 3 34 | f8e8 | What is the material balance in this position? | White is up 4 pawns of material | material |
2q1k2r/pp2ppbp/2b2np1/4B3/2r4P/1NN2P2/PPPQ2P1/2KR3R w k - 1 18 | Qe2 | Is the d-file open, semi-open, or closed? | open | files |
2kr3r/ppq2pp1/1npbpnp1/6B1/1P1P1P2/P5N1/2P1B1PP/R2Q1RK1 b - - 2 15 | e5 | Is the White king in check? | No | check |
r1b2rk1/ppq3b1/3pp2p/5p2/1QPPn1p1/6P1/PB2PPBP/1R2NRK1 w - - 1 17 | Rd1 | Identify any Black knight outposts on the board. | None | outposts |
2N1bbrq/5p1k/5Q2/pPp2pP1/P4NRp/7P/8/7K w - - 4 38 | Rxh4+ | Identify any Black knight outposts on the board. | d4, e4 | outposts |
5rk1/rb3ppp/pNQ1p1n1/8/4P3/2P5/5PPP/5RK1 w - - 3 21 | Qc7 | Does White have any isolated pawns? | Yes: c3 | structure |
8/5k2/2q3p1/1p2bp1p/1P2P3/3Q1KPP/5B2/8 w - - 2 46 | Qd5+ | What piece is on h5? | Black Pawn | occupancy |
2r2nk1/1p2qrnp/p2p1ppB/3Pp3/PP4PN/2P1P1R1/2Q4P/6RK b - - 0 26 | Rc7 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
rnbqkb1r/pp1ppppp/8/2pnP3/8/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 2 4 | Nxc3 | Is the move from a7 to a2 legal? | No | legality |
4r1k1/P1p2ppp/4r3/8/8/2P2B2/R2P1PPP/2B2bK1 b - - 0 21 | Bc4 | What piece is on b2? | Empty | occupancy |
8/8/1p6/3P1R2/2k2b2/7P/1r2K3/8 w - - 5 47 | b3b2 | Is the Black king in check? | No | check |
rnbqk2r/pppp1ppp/4pn2/8/1bPP4/6P1/PP2PP1P/RNBQKBNR w KQkq - 1 4 | Nd2 | Identify any White knight outposts on the board. | None | outposts |
1kqr1bnr/ppp3p1/2n1bp2/2P1N2p/Q2p1B2/P5PB/1P2PP1P/RN2K2R b KQ - 1 13 | fxe5 | What piece is on a3? | White Pawn | occupancy |
r1bqk2r/pp1pbppp/2n2n2/2p1p3/4P3/2PB1N2/PP1PQPPP/RNB1K2R w KQkq - 2 6 | Bc2 | Are there any open files in this position? | No | files |
r1b2n1r/p4kbp/1qp2p2/5Q2/1p1P4/5N2/PPPBN1PP/R3K2R w KQ - 3 18 | Qd3 | What piece is on c5? | Empty | occupancy |
r1r3k1/pnpqnpp1/1p2p2p/3pP3/PB1P4/2PP1N1P/2Q2PP1/RR4K1 b - - 0 16 | Ng6 | What piece is on f4? | Empty | occupancy |
8/3k2p1/p3p2p/3bPP2/3K3r/8/1PR5/8 w - - 1 47 | h3h4 | Is the White king in check? | Yes | check |
r3kb1r/ppp1pppp/2n2n2/6N1/3P3q/2N5/PPP1BP2/R1BQ1RK1 w kq - 2 11 | Nb5 | What piece is on b7? | Black Pawn | occupancy |
6k1/pp4pp/2p3n1/3p4/5b2/1PPR2P1/PB4KP/4r1N1 b - - 2 30 | Ne5 | Identify any Black knight outposts on the board. | e4 | outposts |
r4rk1/4q1p1/p2p3p/nppPpp2/1P4n1/2PP1N2/P1B2PPP/R2QR1K1 b - - 0 19 | Nb7 | Is the move from d6 to d4 legal? | No | legality |
r1b1k2r/pppp1pp1/5qnp/8/2PN1P2/2P3P1/P3P2P/R2QKB1R b KQkq - 0 11 | O-O | Is the move from e8 to e7 legal? | Yes | legality |
4k2r/pp1b1ppp/2n1p3/4P3/8/5P2/PP1NBKPP/2R5 b k - 0 18 | Rf8 | Identify any White knight outposts on the board. | None | outposts |
8/5k2/8/3PK3/1p2P3/8/8/8 w - - 0 7 | Kd4 | Identify any Black knight outposts on the board. | a3, c3 | outposts |
r1b1k2r/1p2b1pp/p3pq2/3p4/5PR1/2N5/PPPQB2P/2KR4 w kq - 0 19 | f5 | Is the move from d2 to d5 legal? | Yes | legality |
r3r1k1/p2qBpp1/2p2n1p/3p4/N7/6P1/PP2PPKP/2RQ1R2 b - - 0 17 | Rxe7 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
rnbqkb1r/ppp1pppp/5n2/8/2pP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 3 4 | a6 | What piece is on e8? | Black King | occupancy |
3r4/pb4k1/1pn2R1p/2p1p1p1/2P1Pn2/2P1NP2/P4BPP/5BK1 w - - 1 25 | Rd6 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
8/1r4k1/3p2pp/2p2p2/2q1nP2/4RN1P/1P4PK/4Q3 w - - 15 35 | Qa1 | Is the move from e1 to f2 legal? | Yes | legality |
3q1rk1/pQ2bp2/2R1p2p/8/3Pn3/6P1/PP2PP2/3R2K1 w - - 0 21 | Rc7 | Is the c-file open, semi-open, or closed? | open | files |
2krn2r/pp2qppp/2n5/4p3/1pNpPP2/P2P2PP/2P1Q1B1/R4RK1 b - - 1 17 | f6 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
rnbqkbnr/ppp1pppp/8/3p4/3PP3/8/PPP2PPP/RNBQKBNR b KQkq - 0 2 | f5 | Is the h-file open, semi-open, or closed? | closed | files |
r1b2rk1/1p2bppp/pB1ppn2/8/4PP2/2N5/PPP1B1PP/2KR3R b - - 0 13 | Bd7 | Identify any White knight outposts on the board. | None | outposts |
8/1r6/2N1ppk1/8/3Pn3/4Pp1P/R4P1K/8 b - - 15 55 | Kh6 | Does White have any passed pawns? | Yes: h3 | structure |
r4rk1/2p3pp/3p1nq1/pp1Ppn2/PP2Np1b/1BPP1P2/4Q1PP/R1B2RK1 w - - 0 23 | axb5 | Is the White king in check? | No | check |
rnb1k1nr/1p2ppbp/p2p2p1/q1pP4/4P3/2N2N1P/PPPB1PP1/R2QKB1R b KQkq - 1 7 | Qb4 | Identify any White knight outposts on the board. | None | outposts |
1r1q1rk1/p1p3pp/b1nbp3/3p1p2/2PPnB2/4PNP1/P2N1PBP/R1Q2RK1 b - - 0 13 | Na5 | What is the material balance in this position? | Equal | material |
1rbq1rk1/4bppp/3p4/p3p3/R1B1P3/1PP5/2N2PPP/3Q1RK1 b - - 1 18 | Be6 | Is the White king in check? | No | check |
r2q1rk1/pp1n1ppp/2pbpnb1/8/2PP4/1P1B1NN1/PB3PPP/R2Q1RK1 b - - 2 11 | Qc7 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r2q1rk1/pp1bbppp/3p1n2/2pnp3/P1N1P3/3P2PP/1PP2PB1/R1BQ1RK1 w - - 0 13 | exd5 | Identify any White knight outposts on the board. | None | outposts |
r2qkbnr/pp2pppp/8/2PpN3/8/2P5/PP3PPP/RNBbKB1R w KQkq - 0 8 | Bb5+ | Is the move from f1 to d6 legal? | No | legality |
r2qr1k1/2p1b1pp/p3Pp2/1p1p1P2/2nP4/2P1BN1P/P4P2/R2QR1K1 w - - 1 21 | Nh4 | Does White have any passed pawns? | Yes: e6 | structure |
8/p1n5/5p1k/1PP1pP2/P1K1N1P1/8/7P/8 b - - 0 43 | Kg7 | What piece is on e8? | Empty | occupancy |
2r5/4p1kp/3p1pp1/q1rB4/1pbQP3/1P3P2/2PR1KPP/2R5 b - - 0 24 | e5 | Does White have any isolated pawns? | No | structure |
bn1brkrn/p1pppppp/1p6/8/2PP4/NP6/q3PPPP/B1QBRKRN b KQkq - 1 4 | d5 | Is the move from f8 to a1 legal? | No | legality |
2kr3r/ppp1qppp/2n5/3b4/1b6/8/PP1BBPPP/RN1Q1KNR w - - 2 11 | Qe1 | What is the material balance in this position? | White is up 2 pawns of material | material |
4R3/p4r1k/2rp2pp/4p1B1/2P5/8/P4PPP/3R2K1 b - - 0 29 | hxg5 | Is the move from c6 to b6 legal? | Yes | legality |
1r1q1r1k/6pp/p1npb3/3Np1b1/1pP1Pp2/1P1Q1B2/P1N2PPP/3R1RK1 w - - 0 19 | a3 | Is the move from d3 to d4 legal? | Yes | legality |
7r/pk2Rp2/2q2P2/2pN1Q2/1p3b2/1Pp3P1/Pn3P2/6K1 b - - 1 32 | Ka8 | What piece is on f7? | Black Pawn | occupancy |
kn2K1Q1/p3r3/P7/8/2p2p1p/2P2P1p/7P/8 w - - 5 7 | Kf8 | Identify any Black knight outposts on the board. | None | outposts |
8/1p4p1/2np1k1p/1K6/Pp6/7P/8/8 w - - 0 44 | a5b4 | What is the material balance in this position? | Black is up 6 pawns of material | material |
r1b2rk1/pp3pbp/2pp1np1/q3n3/2PNP3/2N3PP/PP2QPB1/R1B1R1K1 b - - 2 12 | Qc5 | Are there any open files in this position? | No | files |
r2nk2r/pb2qp1p/4p1pQ/1p1nP1N1/2pP3P/2P3R1/3B1PP1/R3KB2 b Qkq - 1 16 | f5 | Are there any open files in this position? | No | files |
k1r5/p5pp/p3bp2/1P6/2n2P1P/2R5/4PP2/3R2K1 w - - 2 31 | bxa6 | Is the Black king in check? | No | check |
r1bq1rk1/ppp1bppp/4pn2/4N3/3P1P2/1BN5/PP3PPP/R2Q1RK1 b - - 6 11 | Nd7 | Is the move from f7 to b8 legal? | No | legality |
8/8/4kp1p/1P2p1pP/4P1K1/5PP1/5b2/5B2 w - - 7 54 | Be2 | Is the move from f1 to h6 legal? | No | legality |
r3k2r/pp2bp2/2np1n1p/2pNp1p1/1PP5/3P2Pq/P1N1PP1P/R1BQ1RK1 w kq - 0 13 | Nce3 | Does Black have any passed pawns? | No | structure |
r5k1/2ppqppp/2b5/3B1P2/2Q1P2n/2P5/1P1BR2P/7K b - - 4 24 | Qg5 | Is the White king in check? | No | check |
r1b1k2r/ppp1nppp/3p2q1/2b1n3/3N4/2P1B3/PP1NBPPP/R2Q1R1K w kq - 2 12 | Nb5 | Is the move from d1 to d6 legal? | No | legality |
1r4nk/1p1qbr1p/3p4/p1pPpp2/2P1P3/2N1BP1P/PP1Q2RK/5R2 b - - 1 28 | f4 | Is the g-file open, semi-open, or closed? | open | files |
r2qk2r/pp3p1p/2npb1p1/2p4n/2P1PP2/2PB4/P3N1PP/R1BQ1RK1 b kq - 0 11 | Bd7 | What piece is on c4? | White Pawn | occupancy |
5r1r/pppqbkpp/2n1b3/3pP3/8/3Q1N2/PPP2PPP/RNB1R1K1 w - - 4 12 | Nc3 | Is the move from e1 to d1 legal? | Yes | legality |
r2k3r/pp1B1Rpp/4p3/8/8/4n3/PP4PP/3R2K1 w - - 0 23 | Rd3 | Identify any Black knight outposts on the board. | d5 | outposts |
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