fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2rnk3/2q1b3/p3Q3/4Pp2/1Pp4p/P4NrP/2R3PK/3R4 w - - 1 31 | Qxf5 | Identify any White knight outposts on the board. | a5, c5, d6, f6 | outposts |
1r4k1/4bp1p/4p1p1/8/8/2q5/4K3/8 b - - 3 50 | e3e2 | What is the material balance in this position? | Black is up 21 pawns of material | material |
5r1k/1pp3p1/3p1r1p/p2Pp3/1qP5/1PQ1RPP1/2P1R1KP/8 b - - 1 36 | Qc5 | What is the material balance in this position? | Equal | material |
r1bq1rk1/pp2nppp/2pp1n2/1B2p1B1/4P2N/2PP4/P1P2PPP/R2Q1RK1 w - - 0 10 | Ba4 | Is the move from a1 to g2 legal? | No | legality |
3q2k1/p4pbp/1pn3p1/2p1P3/5P2/1Q2B1N1/P5PP/6K1 b - - 2 8 | Nb4 | Does Black have any passed pawns? | Yes: c5 | structure |
2b5/7p/6pk/Rp1P4/1P3n1P/1B2p3/5Q2/3K4 b - - 0 47 | exf2 | What is the material balance in this position? | White is up 10 pawns of material | material |
rnbq1rk1/pp2ppbp/5np1/2pp4/2PP4/1P2PN2/PB3PPP/RN1QKB1R w KQ - 0 7 | dxc5 | Is the g-file open, semi-open, or closed? | closed | files |
2b3k1/pr2r1pp/4p1q1/1p2Q3/2pP4/P1N2P2/1P4PP/3R1RK1 b - - 1 26 | a6 | What piece is on g4? | Empty | occupancy |
8/R1p5/5p2/2P1k3/3n4/3Kp1r1/8/8 b - - 3 44 | a6a7 | What is the material balance in this position? | Black is up 5 pawns of material | material |
2r3k1/5pp1/4p1qp/1p2Pb2/3Q4/2P5/3R1PBP/1R4K1 b - - 4 30 | Rc4 | Is the move from f5 to h3 legal? | Yes | legality |
r1bqr1k1/ppp2pp1/2np1n1p/4p3/1PB1P3/P1NPPQ1N/2P3PP/R3KR2 b Q - 1 11 | Be6 | Are there any open files in this position? | No | files |
8/2pk1p2/7p/2rRQ1p1/8/6P1/P4P1P/5RK1 b - - 0 31 | d2d5 | What is the material balance in this position? | White is up 14 pawns of material | material |
5r1k/5p1p/8/p1nP4/PpB2R2/1P6/7P/7K b - - 0 36 | Kg7 | Does Black have any isolated pawns? | Yes: f7, h7 | structure |
3r1rk1/2q1b1pp/p2pP3/1ppQp1B1/7n/2P4P/PPB3PK/R4R2 b - - 3 25 | Ng6 | What piece is on g6? | Empty | occupancy |
3r1rk1/1b3ppp/3N4/p1P4q/1ppQ4/6P1/PP3P1P/3RR1K1 w - - 1 25 | Re3 | Is the Black king in check? | No | check |
2rqk3/p2b1p1p/1p2pnr1/2p5/8/B3QNP1/p4PBP/R2R2K1 w - - 2 21 | Bb2 | Is the move from d1 to e5 legal? | No | legality |
1R3bk1/5p2/3p2pP/8/7P/2n4b/5P2/4K3 b - - 0 43 | Be6 | Does Black have any isolated pawns? | Yes: d6 | structure |
r1bqkb1r/pp1n1ppp/2n1p3/2ppP3/3P4/2PB1N2/PP1N1PPP/R1BQK2R b KQkq - 2 7 | f6 | Identify any Black knight outposts on the board. | None | outposts |
r3k2r/pppq1ppp/2np1n2/8/3PPP2/P1b1BB1P/1P4P1/R2QK2R w KQkq - 0 13 | b4c3 | Is the White king in check? | Yes | check |
7k/5Bp1/p5P1/8/1P6/1KP5/8/1q6 w - - 9 55 | Kc4 | Does White have any passed pawns? | Yes: c3 | structure |
6kr/Q4Rp1/2br3p/1p6/3n2q1/6P1/PPP1PP2/2KR1B2 w - - 1 22 | Rf4 | Is the move from a7 to a8 legal? | Yes | legality |
r3r1k1/1bpnqpb1/pp3npp/4p3/1PN1P2B/2P2N2/P1Q2PPP/R3RBK1 b - - 1 15 | Rac8 | Identify any White knight outposts on the board. | None | outposts |
8/8/8/2b5/3p4/1k2p3/1p2K3/1B6 w - - 2 16 | Kd3 | Does White have any passed pawns? | No | structure |
6Q1/4k1pp/3p4/pPb1p1q1/P3Pn2/2P2bP1/R4P1P/1N3RK1 w - - 3 26 | Qxh7 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
1Q2R3/pp4pk/5p2/7p/3P3P/5PK1/2qr4/8 b - - 11 40 | Qg6+ | Identify any White knight outposts on the board. | None | outposts |
8/6p1/4p2p/2k2p2/p1r2P2/2K3P1/4R2P/8 w - - 10 47 | b4c4 | Is the White king in check? | Yes | check |
3r1bk1/1b6/p5Pp/4r3/1pPNp3/3n3Q/PP6/1K4R1 w - - 0 32 | g7 | Identify any Black knight outposts on the board. | d3, f3, g5 | outposts |
5r2/3r4/pk1P3p/3p1pp1/P7/6P1/K1P4P/1R6 b - - 1 37 | d1b1 | Is the Black king in check? | Yes | check |
r1b1k1n1/ppppqp2/8/3QP1p1/4Pp1r/BBP3p1/P1P3P1/R3KR2 b Qq - 1 14 | d6 | Identify any White knight outposts on the board. | f6 | outposts |
rn1q1rk1/p1p2pp1/bp2pn1p/8/Q2P3B/P7/1P2PPPP/3RKBNR b K - 1 11 | Qe7 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
4brk1/ppq3pp/4N3/3p2P1/1b1n2R1/1P3B2/P4P1P/R2Q2K1 b - - 0 22 | Nxe6 | Identify any Black knight outposts on the board. | None | outposts |
r2qrbk1/1bpn1p1p/p2p1np1/1p2p3/P2PP3/2P2NNP/1PB2PP1/R1BQR1K1 b - - 0 15 | c5 | Is the Black king in check? | No | check |
r4b1r/2pk4/2n2p1p/pp1p2p1/3P2P1/2P1P1N1/PP1NKPP1/R6R w - - 2 20 | Kd3 | Are there any open files in this position? | No | files |
rnbqk2r/pp1p1ppp/4pn2/2p5/1bPP4/2N2NP1/PP2PP1P/R1BQKB1R b KQkq - 0 5 | cxd4 | Are there any open files in this position? | No | files |
1r1q1r2/p2bppkp/3p1np1/np6/3NP2P/1BN2P2/PPPQ2P1/2KR3R b - - 0 14 | e5 | Identify any Black knight outposts on the board. | None | outposts |
r4bk1/3R4/2R4p/p1n3p1/8/1P6/2P2PPP/6K1 w - - 1 31 | Rdc7 | Is the e-file open, semi-open, or closed? | open | files |
8/8/8/8/5r1p/4pk1K/6R1/4B3 w - - 0 65 | e4e3 | What is the material balance in this position? | White is up 1 pawn of material | material |
1n2br2/r1b2k1p/p1p1p3/1pPpPp2/3N1Pq1/1P1B4/PBQ4P/R4R1K w - - 2 22 | Rg1 | Is the g-file open, semi-open, or closed? | open | files |
2kr3r/1pqbn3/p2b1p1n/1P1p2pp/P6Q/2NB1N2/1BP3PP/R4R1K w - - 0 19 | Qf2 | Does Black have any isolated pawns? | Yes: d5 | structure |
rn1qk2r/pp3ppp/2p5/3p1b2/1b1Pn3/P1N1PNP1/1PQ2P1P/R1B1KB1R b KQkq - 0 9 | Nxg3 | What is the material balance in this position? | Equal | material |
rnbk1b1r/pp3Qpp/8/2p3N1/2Bp3q/8/PPP2PPP/2KR3R w - - 2 13 | Rhe1 | What piece is on f8? | Black Bishop | occupancy |
1R6/7p/8/4pb2/3p3P/6P1/k1r5/1r1K4 w - - 0 52 | b2b1r | Is the Black king in check? | No | check |
2rr1k2/1n2qpb1/4p1p1/1p1p2N1/1P5Q/5NP1/P3PPK1/2RR4 w - - 0 30 | Nd4 | Are there any open files in this position? | Yes: c, h | files |
4r1k1/1p2qpbp/pNrpbnp1/4n3/3BPN2/1P1B3P/P1P3P1/3R1RQK w - - 11 22 | c4 | Is the move from b6 to a4 legal? | Yes | legality |
r1bqk2r/pp3ppp/2n1pn2/b1p5/2PP4/P1N1BN2/1P3PPP/R2QKB1R w KQkq - 5 10 | Qd3 | Identify any Black knight outposts on the board. | None | outposts |
7k/p1RR1B1p/1r3p2/5N2/1p3K2/6P1/Pn2bP1P/4r3 b - - 6 30 | Rb8 | Identify any Black knight outposts on the board. | a3, c3 | outposts |
8/2b2ppk/7p/8/4Q3/1P3P1P/P1r3P1/7K b - - 3 31 | e8e4 | Is the Black king in check? | Yes | check |
2krr3/ppp4p/1b3p2/5b2/5B2/5N2/1Pn2PPP/2RB1K1R w - - 0 19 | Bxc2 | Is the move from d1 to h2 legal? | No | legality |
N1bq1bnr/pp4pp/2np2k1/3Np3/4P3/5Q2/PPP2pPP/R3KB1R w KQ - 0 13 | Qxf2 | What is the material balance in this position? | White is up 1 pawn of material | material |
r5k1/2q2ppp/2p1bnn1/8/1P1pP3/4N2P/2Q2PP1/2B1RBK1 w - - 0 22 | Nf5 | Is the Black king in check? | No | check |
r1bqr1k1/ppp2ppp/2n2n2/4p1B1/1bBP4/2N1PN2/PP3PPP/R2Q1RK1 w - - 0 10 | Qb3 | Identify any Black knight outposts on the board. | None | outposts |
1nkR3r/pb5p/1p2q3/2b1Np2/4p3/P7/2Q1BPPP/5RK1 b - - 0 24 | d1d8 | Is the Black king in check? | Yes | check |
r1bqkb1r/1p2pppp/p1np1n2/8/3NP3/2N4P/PPP2PP1/R1BQKB1R w KQkq - 1 7 | g4 | Does Black have any passed pawns? | No | structure |
8/p3k3/P4n2/7p/3K3P/8/4B1P1/8 w - - 3 47 | Ke5 | Is the move from d4 to f5 legal? | No | legality |
8/4kp2/2P1n1p1/7p/1N2P3/p1K5/P2R2PP/2r5 w - - 3 47 | Kb3 | What is the material balance in this position? | White is up 1 pawn of material | material |
3k4/8/8/6p1/4P3/6P1/2rp4/3K4 b - - 3 54 | e2d1 | What is the material balance in this position? | Black is up 5 pawns of material | material |
4rk1r/pp3p2/7p/3QnNp1/1qn1R2P/1N6/PP3PP1/R5K1 b - - 2 22 | Qb6 | Does White have any passed pawns? | No | structure |
r2kQb1r/pbpp3p/1pn1p3/7B/3PP2q/P1N5/1PP2PPP/R3K2R b KQ - 2 13 | f7e8 | Is the Black king in check? | Yes | check |
8/r3bkp1/5p1p/2pR1P1K/1pP4P/1P2B3/5P2/8 b - - 2 60 | Ra5 | Does White have any isolated pawns? | Yes: f2, f5, h4 | structure |
r3r1k1/pp3ppN/2p5/2bp4/5P2/1PNB4/PBKP1qP1/1R5n w - - 3 21 | e1f2 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r4rk1/6pp/bqp2b1n/pp1p4/5P2/2NBPQ1P/PP1B2P1/R2R2K1 w - - 0 19 | Kh2 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
1k1r3r/pbp1qpp1/1pn1p3/4P1N1/3p1P2/1P1P2P1/1PPKQ1BR/7R b - - 6 19 | Rxh2 | Is the move from e7 to c6 legal? | No | legality |
8/p5pk/7p/2p2p1P/5P2/5K2/4r3/8 b - - 1 40 | Re8 | What is the material balance in this position? | Black is up 8 pawns of material | material |
r1b1kb1r/2q2p1p/p2ppP2/1pn5/3NP3/2N2Q2/PPP4P/2KR1B1R w kq - 1 16 | Qh5 | What is the material balance in this position? | Equal | material |
5b2/8/8/2p1k3/p1P3Pp/4K2P/P2N4/8 b - - 6 138 | Bh6+ | Identify any Black knight outposts on the board. | None | outposts |
rnbq1rk1/1pp2ppp/4pn2/p2p4/1bPP4/5NP1/PP1BPPBP/RN1QK2R w KQ - 2 7 | Qc1 | Does White have any isolated pawns? | No | structure |
5k1q/5p1P/p3p3/1p3p2/1P3P2/P7/2P5/1K5Q w - - 1 36 | Qa8+ | Is the Black king in check? | No | check |
2rqk2r/1p1n1p2/p6p/3p2p1/3Pn3/Q3BPP1/PP2B2P/2R2RK1 b k - 0 21 | Nef6 | Identify any White knight outposts on the board. | None | outposts |
4Q3/6b1/5qpk/p6p/4B2P/6P1/5PK1/8 b - - 0 41 | Qa6 | Is the move from f6 to b2 legal? | Yes | legality |
8/p4B2/8/7p/7p/1P4Pk/P1r4P/3n2K1 w - - 0 44 | Be6# | What piece is on f2? | Empty | occupancy |
5r2/5p2/2RP1k2/2P4p/3K1Pp1/1R6/7r/8 b - - 0 34 | h4 | Identify any Black knight outposts on the board. | f3, h3 | outposts |
5rk1/1pp3p1/3p1r1p/3Pp3/2P5/1Pp1RPP1/4R1KP/8 w - - 0 39 | Rxc3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2r4k/1q3p1p/p1p1r1p1/1pRpP3/3P1PP1/6QP/PP5K/2R5 b - - 9 29 | f5 | Identify any Black knight outposts on the board. | None | outposts |
r1b2rk1/pp2ppb1/2n3p1/q1pp4/3P1BN1/2N1P3/PPPQ1PP1/R3KB1R b KQ - 0 11 | Bxg4 | Identify any White knight outposts on the board. | None | outposts |
5rk1/ppp4p/8/3p2P1/8/8/P5PP/4rQ1K w - - 0 30 | Qxe1 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
rnbqk2r/pp2ppbp/3p1np1/2p1P3/2PP1P2/2N5/PP4PP/R1BQKBNR b KQkq - 0 6 | dxe5 | Identify any Black knight outposts on the board. | None | outposts |
1rr3k1/pp2ppbp/3p1np1/3P4/3B2PP/P4P2/1PPR4/2K2B1R b - - 0 16 | a6 | Are there any open files in this position? | No | files |
r3r1k1/2q3pp/p4p2/1p1N4/2pPn3/1P3Q1P/PBP2PPb/R3RK2 b - - 2 22 | Nd2# | Identify any Black knight outposts on the board. | None | outposts |
rnb2rk1/pp2q1pp/2pbpn2/3p1p2/2PP4/5NP1/PPQNPPBP/R1B2RK1 w - - 7 9 | Ne5 | Is the move from b2 to f1 legal? | No | legality |
r2q1Rk1/pp2b1p1/2n5/4p3/2Npb2P/3P2P1/PP6/R2Q2K1 b - - 0 18 | f1f8 | Is the Black king in check? | Yes | check |
r3kb1r/ppp2p1p/2np1Bp1/1N2p3/8/1B1P4/PPP2PbP/R3K1NR b KQkq - 1 13 | Bh6 | Does White have any isolated pawns? | Yes: f2, h2 | structure |
1r1r4/pb1qn1kp/1p2ppp1/2p5/4BPPP/2PPN3/PP4Q1/3R1RK1 w - - 1 23 | f5 | Does White have any isolated pawns? | No | structure |
5r2/5k2/8/6P1/8/5R1K/8/8 b - - 4 81 | Kg7 | Is the move from f7 to c4 legal? | No | legality |
r1bq1rk1/pp1n2pp/2pbp3/3p1p2/2PPn3/PPNBPN2/1BQ2PPP/R4RK1 b - - 2 11 | Qf6 | Is the b-file open, semi-open, or closed? | closed | files |
2r1k1r1/1pqb1p2/p3p3/n2pP3/P4PPn/3Q3P/2P1N3/R1B1KB1R w KQ - 1 18 | Qh7 | Identify any White knight outposts on the board. | h5 | outposts |
r1b1k2r/pp1n1ppp/4pB2/1B6/3NP3/2q5/P4PPP/R2QK2R w KQkq - 0 12 | Ke2 | Is the move from d4 to d4 legal? | No | legality |
r1bqk2r/ppppnppp/8/2bBP3/8/5NK1/PB4PP/RN1Q3R w kq - 1 11 | Ng5 | Is the e-file open, semi-open, or closed? | semi-open for Black | files |
2bq1r2/7k/pp2Q1np/4B1p1/P1PNP3/2P5/1P4PP/R6K w - - 1 24 | Qd6 | Identify any White knight outposts on the board. | d4, d5 | outposts |
2k1r2r/1ppbn2p/p5p1/2p2p2/3NP3/5P2/PPPN2PP/2KRR3 w - - 0 16 | N4b3 | Is the d-file open, semi-open, or closed? | open | files |
rnb2rk1/ppp3pp/8/3q1p2/5P2/2B2N2/PPP1QbPP/R1K2B1R b - - 1 12 | Rd8 | What is the material balance in this position? | Equal | material |
2r3k1/p1qb1r1p/4p1pQ/3p4/1p4P1/1N2RP2/PPP1R2P/1K6 b - - 7 25 | Qb6 | Is the move from c7 to d8 legal? | Yes | legality |
r5k1/p1p3r1/6B1/8/2Q5/P1N3P1/1P3P1P/2K5 b - - 2 29 | f4c4 | Is the Black king in check? | Yes | check |
5b2/p1r2k1p/1p2p1p1/n7/6B1/P7/5PPP/3RR1K1 b - - 3 27 | Bxa3 | Identify any White knight outposts on the board. | None | outposts |
6k1/2q2pp1/3p2p1/3P4/1pP2Pn1/r6P/P3R1PK/8 w - - 0 36 | e3g4 | What is the material balance in this position? | Black is up 11 pawns of material | material |
r4rk1/1b1n1ppp/p2pq3/1p1N4/4P3/P4Q2/1PP4P/1K1R1B1R w - - 4 19 | Bh3 | Identify any Black knight outposts on the board. | e5 | outposts |
r1Nq3r/pp2kppp/1bn2n2/8/1P6/P3p3/1B3PPP/R2QKBNR b KQ - 0 12 | Qxc8 | Does White have any isolated pawns? | No | structure |
2rrb1k1/pp2bppp/4pn2/q2nN3/3P4/1BN2QB1/PP3PPP/2R1R1K1 w - - 19 17 | Bh4 | Are there any open files in this position? | Yes: c | files |
2bq2k1/3r2pp/p2N4/1pQ5/2p5/P4P2/1P4PP/5RK1 w - - 4 34 | Qd5+ | Does White have any isolated pawns? | No | structure |
3r1rk1/pp3ppp/2n5/8/2B1b3/P3P3/1PQ2PqP/2KR3R w - - 2 18 | d5e4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1b1k3/pp1n1p1p/3b1np1/3p2B1/2pP3N/2P3P1/PPB2P1P/RN4K1 b - - 0 15 | Ng8 | What piece is on e6? | Empty | occupancy |
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