fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
4R3/6kp/1r6/1p6/2p5/2P4P/1P4P1/7K b - - 0 33 | Kf6 | Does White have any passed pawns? | No | structure |
r2q1rk1/pbnp2p1/1p2pb1p/8/3P3P/P2B1N1R/1P1BQPP1/R3K3 b Q - 1 16 | d6 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
8/1p1r4/p3k3/P3pb2/2P2p2/R2P1Pr1/2KNR3/3N2b1 w - - 7 55 | Rb3 | What piece is on e5? | Black Pawn | occupancy |
3q2k1/1p4r1/p1p1R1Pp/8/3P4/1P3r2/3Q1PP1/6K1 w - - 0 47 | gxf3 | Identify any Black knight outposts on the board. | b5, d5 | outposts |
2kr1b1r/p1p1qppp/2p5/2P1n3/Q3N3/5P2/PP3PKP/R1B2R2 b - - 4 15 | Qe6 | Identify any Black knight outposts on the board. | None | outposts |
r2q1rk1/pp2p1bp/2n3p1/2Pp2B1/2P3b1/5N2/P3BPPP/1R1Q1RK1 b - - 2 14 | Bf5 | Are there any open files in this position? | No | files |
r2q1rk1/2p2ppp/p1n1b3/1p1pP3/8/2P2N2/PPBN1KPP/R1BQ4 b - - 0 13 | f6 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
3r1r2/pbp4q/1p2P1k1/3PQp2/4p3/2N1P3/PP3p2/5RK1 w - - 0 28 | Rxf2 | Is the move from g1 to f2 legal? | Yes | legality |
2R3Q1/6p1/6kp/4p1q1/4P3/rp3PP1/P5P1/6K1 w - - 3 48 | Rc6+ | What piece is on a3? | Black Rook | occupancy |
r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/5NP1/PP2PPBP/RNBQ1RK1 w kq - 1 7 | cxd5 | What is the material balance in this position? | Equal | material |
2q3r1/4k1p1/5p1p/pPpQpP2/8/1P4RP/6PK/8 w - - 0 46 | b6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
7k/3p2p1/7p/2PQ1p2/P2B4/1NP4P/6PK/1q2r3 w - - 0 34 | Nd2 | What is the material balance in this position? | White is up 2 pawns of material | material |
2r3k1/2Pr2p1/1QR4p/p3p3/8/4P2P/q2p1PP1/3R2K1 b - - 0 30 | Qa4 | Is the White king in check? | No | check |
rnbqkb1r/pppppp1p/5np1/8/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 0 3 | f3 | Is the move from c1 to d2 legal? | Yes | legality |
5r2/2pr4/p5k1/P3R3/1p1PP1p1/1N2P1P1/1PP5/6K1 b - - 0 32 | Rf3 | What piece is on c7? | Black Pawn | occupancy |
8/4k3/4P3/5P1p/7P/1p1p4/3K4/8 b - - 2 56 | b2 | Is the move from d3 to b7 legal? | No | legality |
7Q/1p6/3p2K1/6P1/8/8/3p4/1k6 b - - 0 50 | d1=Q | Does White have any passed pawns? | Yes: g5 | structure |
1b4k1/p2bqp1p/3N2p1/2PpP3/3N1Q2/7P/P4PP1/6K1 w - - 0 30 | Nf3 | Does Black have any passed pawns? | Yes: d5 | structure |
2kr3r/ppp2ppp/8/4pB2/3P2P1/2P1BP2/P4P2/R3K2R b KQ - 1 16 | d3f5 | Is the Black king in check? | Yes | check |
rn3rk1/p1q2p2/1pp3pQ/4PbP1/2B5/5N1P/P1P5/3R1RK1 b - - 2 27 | Qe7 | Does Black have any passed pawns? | No | structure |
r1bqk2r/pp2b2p/2n1ppp1/2pp3n/3P4/2P1PNB1/PP1NBPPP/R2QK2R w KQkq - 2 10 | dxc5 | Identify any White knight outposts on the board. | None | outposts |
rnbq1rk1/pp1pp1bp/2p2np1/5pB1/2PP4/2N1P1P1/PP3PBP/R2QK1NR b KQ - 0 7 | d6 | Identify any Black knight outposts on the board. | None | outposts |
r2r4/4kppp/1pbpn3/P3p3/P1P1P3/1N1B1P2/5KPP/R1R5 b - - 0 23 | Nc5 | What piece is on d2? | Empty | occupancy |
rn1qkbnr/pbpppppp/8/8/2pPP3/2N5/PP3PPP/R1BQKBNR b KQkq - 2 4 | b1c3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2q2rk1/5p1R/3p1p2/1p3Np1/2r1P3/P4P2/1P4P1/1K5R b - - 5 25 | Rc1+ | Is the Black king in check? | No | check |
6k1/p1r4p/6p1/1P1p1p2/3Rp3/1r2P2P/5PPK/8 b - - 2 33 | a4d4 | Identify any Black knight outposts on the board. | c4 | outposts |
3r1rk1/ppp3pp/2n1qn2/2P5/1P1p1Bb1/P5P1/3NPPBP/R2QR1K1 b - - 3 16 | b1d2 | What is the material balance in this position? | White is up 1 pawn of material | material |
3r1rk1/ppqn1pp1/2p2n1p/2P1b3/NP6/PQ3BP1/5P2/1RB1R2K b - - 2 19 | d1b3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2bqkbnr/4pppp/r1Bp4/p1P5/3P4/4P3/1P3PPP/RNBQK1NR b KQk - 0 8 | b5c6 | Is the Black king in check? | Yes | check |
6k1/1p6/4P3/3P3p/p1r5/b1B3NK/1P6/8 b - - 0 48 | Rxc3 | Is the move from c4 to b8 legal? | No | legality |
r1q2rnk/pb1nbppp/1p1p4/2p1pP2/2P1P1P1/2NP4/PP4BP/R1BQ1RNK w - - 1 14 | g5 | What is the material balance in this position? | Equal | material |
4k1r1/3b1p1p/p1p1pBp1/2N5/3pP3/8/PPP2PPP/6K1 w - - 0 22 | h4 | What piece is on a3? | Empty | occupancy |
r1b2rk1/1p2bppp/p1n5/2P5/4p1n1/N7/PP1BBPPP/2RRN1K1 b - - 1 16 | Nge5 | Identify any Black knight outposts on the board. | d3 | outposts |
2q1n2k/5Bp1/6QP/1P6/P2pP1p1/3P4/6P1/6K1 w - - 1 47 | hxg7+ | Identify any White knight outposts on the board. | a6, b5, c6, d5 | outposts |
3r4/7R/8/8/8/8/2K4p/7k w - - 0 51 | Rg7 | What piece is on d8? | Black Rook | occupancy |
2B3k1/1p2bp1p/p3pp2/n7/8/4PN2/PP3PPP/6K1 b - - 0 19 | Kf8 | Is the move from f7 to h2 legal? | No | legality |
6k1/R5b1/1q1p1nbp/2pPp1p1/2P1N3/P1N2P2/1r1B2PP/3Q2K1 w - - 3 31 | Ra8+ | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1r3/4P1k1/p7/3p2P1/1p6/8/PPP2R1P/2K4R b - - 0 30 | Rxe7 | Is the move from a6 to a5 legal? | Yes | legality |
r2q1rk1/2p2ppp/p1Q2b2/1p6/1P4b1/PB1P4/1B1N1PpP/1R2R1K1 b - - 1 17 | c1b2 | What is the material balance in this position? | White is up 1 pawn of material | material |
6Q1/2Q5/8/1pk1p3/3bP2K/r6P/5n2/q7 b - - 0 46 | b8c7 | Is the Black king in check? | Yes | check |
3q2k1/p2P1pp1/7p/1p3B2/8/3R2P1/5P1P/6K1 w - - 1 33 | Rc3 | Does White have any isolated pawns? | Yes: d7 | structure |
5r2/p3b1pk/2p4p/2n2p2/1pB1pP2/2N3PP/PPPr4/2R2RK1 w - - 2 24 | Rf2 | What piece is on h2? | Empty | occupancy |
3r1rk1/1p4q1/p3b3/3pp3/6p1/1P2Q3/P1PN2PP/3R1RK1 w - - 0 26 | Rde1 | What piece is on b3? | White Pawn | occupancy |
r1b3k1/ppq4p/2nbpr1p/3p4/NP1P4/P4N2/4BPPP/R2Q1K1R b - - 0 15 | Qf7 | Is the c-file open, semi-open, or closed? | open | files |
rnb2Q2/pp1p3p/1k2p3/1N6/4P3/8/P1PN1PrP/2qBK2R w K - 5 20 | a4 | Are there any open files in this position? | Yes: g | files |
2r1k2r/p1nq2pp/1pnbbp2/2p5/4Np2/1P1N2P1/PB1PP1BP/2RQ1RK1 w k - 0 15 | Nxd6+ | Are there any open files in this position? | No | files |
r1bqkb1r/pp1ppp1p/5np1/8/2PQP3/2N5/PP3PPP/R1B1KB1R b KQkq - 0 7 | d6 | Is the move from f8 to h6 legal? | Yes | legality |
8/1p3p1p/1k4p1/p4p2/2P2P2/PP5P/2K1NnP1/8 b - - 0 34 | Kc5 | Does White have any passed pawns? | No | structure |
r3k2r/pb1nq3/1p1pp3/5ppp/2NP4/2P1P1B1/P3QPPP/R4RK1 b kq - 1 18 | f4 | Does Black have any passed pawns? | No | structure |
r2q1rk1/1bpp1ppp/p1nb1n2/1p2p3/P3P3/1BPP1N2/1P3PPP/RNBQ1RK1 b - - 0 9 | h6 | Are there any open files in this position? | No | files |
4r1k1/4q1pp/1r2Nn2/1p6/2p5/2P1R2P/1P2Q1P1/4R2K b - - 0 29 | Qd7 | Identify any Black knight outposts on the board. | None | outposts |
8/1b2q3/pp2pknQ/6N1/P3Pr2/2N5/1P4PP/3R2K1 w - - 3 33 | Nf3 | Does Black have any isolated pawns? | Yes: e6 | structure |
r2qk2r/pb1n1p2/3p3p/1Ppnp1p1/4B3/2b1P1B1/PP2NPPP/R2Q1RK1 w kq - 0 14 | Bxd5 | Is the Black king in check? | No | check |
r1bq1rk1/ppp1ppbp/2np1np1/3P4/4P3/2N2N2/PPP1BPPP/R1BQ1RK1 b - - 0 7 | Nb8 | Is the move from e7 to e6 legal? | Yes | legality |
r2qkbnr/ppp1pppp/8/3Pn3/2p1P1b1/5N2/PP3PPP/RNBQKB1R w KQkq - 1 6 | Qd4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kr4/pp1n4/q3pp2/2pp4/3Pr3/2P1B2Q/PP1K1P1P/R6R b - - 0 22 | cxd4 | What piece is on e6? | Black Pawn | occupancy |
3Q2k1/4pp1p/p2p2p1/1b1P4/1P2P3/r6P/4rPP1/2R3K1 b - - 1 28 | b6d8 | Is the White king in check? | No | check |
2b1Bk2/4n3/ppR5/6p1/2PPPP2/2N5/PP1B1K2/8 b - - 0 37 | d6c6 | Identify any White knight outposts on the board. | d5, e5, g5 | outposts |
rn1k3r/pp4Qp/2p1p3/4N1n1/P1p5/8/2q3PP/R3KB1R b - - 3 16 | Qc3+ | Identify any Black knight outposts on the board. | b3, d3, d5 | outposts |
1rb3k1/p2p1pb1/2p3pp/2Bn2N1/1P2N1PP/q6B/2QKP3/3R4 w - - 0 26 | Nf3 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r1b1k2r/3p1pp1/1pn1pq1p/8/1bP5/1QN2N2/PP2PPPP/R3KB1R w KQkq - 0 10 | e3 | Is the move from e2 to c3 legal? | No | legality |
3kr3/pB1b1p1p/1p2pB2/2p3r1/8/7P/PPP2PP1/3RK2R b K - 6 25 | Re7 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
r1bq1rk1/2p1npp1/p6p/1pp5/2N1P3/2NP3P/P1PQ1PP1/R4RK1 w - - 0 14 | b7b5 | Identify any Black knight outposts on the board. | a4 | outposts |
3r1rk1/pb3ppp/1pq1p1n1/8/2PP4/P3Q2P/1B3PP1/3RRBK1 w - - 4 27 | Qc3 | Is the move from e3 to f3 legal? | Yes | legality |
1bk5/8/P1p5/2Pp3P/1P6/5K2/8/8 w - - 1 61 | Kg4 | What piece is on f3? | White King | occupancy |
2b1r1k1/5pbp/6p1/4P3/1p2n3/1P5P/4N1P1/rN1RKBBR b K - 0 24 | Bxe5 | What piece is on h8? | Empty | occupancy |
8/1R6/3k3p/8/6P1/1pr2P1P/2p5/2K5 b - - 1 42 | Rxf3 | What piece is on d6? | Black King | occupancy |
r1bq1b1r/1p2pQpp/p2k1n2/2pPn3/2P2B2/2NB4/PP3PPP/R3K2R b KQ - 1 13 | g6 | Is the move from e7 to e6 legal? | Yes | legality |
r2q1rk1/p6p/2pp1nBQ/1p2P3/8/2N5/PPP2P2/2KR3b b - - 0 18 | Qc7 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r1r3k1/pp1nq1pp/4b3/3pNp2/1b1PBP2/2N3PP/PPQB4/1K4RR b - - 0 18 | d3e4 | What is the material balance in this position? | White is up 3 pawns of material | material |
rnbqkbnr/ppp2ppp/4p3/3P4/2B5/8/PPPP1PPP/RNBQK1NR b KQkq - 0 3 | e4d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
2kb4/pp3p1p/1np1pp2/1q6/6Q1/P3B3/1PPN1PPP/2K5 b - - 3 20 | Qe5 | What piece is on d2? | White Knight | occupancy |
rnb2r1k/1pp2ppp/1n1p1b1B/p4q2/2PPN3/3Q1NR1/1P2BPPP/4K2R w K - 8 15 | Nxf6 | Is the move from e4 to c3 legal? | Yes | legality |
4r1k1/q2nbppp/b4N2/p7/2p5/6P1/P5BP/1R1QR2K b - - 0 24 | Nxf6 | What is the material balance in this position? | Equal | material |
8/6p1/6kp/1R3p2/4p2P/6P1/3r1P2/5K2 w - - 4 65 | Ra5 | Identify any White knight outposts on the board. | None | outposts |
1k6/8/8/pQ2Pp2/P4Pp1/1Pp5/6q1/K7 b - - 4 132 | Kc8 | Is the move from b8 to a8 legal? | Yes | legality |
3r1r2/4k1pp/p7/1n2pP2/2Q1B1q1/2b3P1/P4P1P/5RK1 w - - 0 22 | Qe6# | What piece is on e4? | White Bishop | occupancy |
r1r5/p3bpk1/1pN1q1n1/1P1pPp2/P1b2P1p/2Q1B2P/3N2P1/R2R2K1 w - - 6 29 | Nd4 | What piece is on f7? | Black Pawn | occupancy |
r1q2rk1/p4p2/4pQp1/1p2P3/2p5/4b3/PP3PPP/3RR1K1 w - - 2 24 | Rxe3 | Is the move from f2 to f6 legal? | No | legality |
2kr1b1r/pppbnppp/2n5/1B2P3/4pB2/2N5/PPP1NPPP/R3K2R b KQ - 8 9 | Nb4 | Is the move from d7 to f5 legal? | Yes | legality |
1r1qk2r/ppp1npp1/2n1pb1p/3p4/2PP2b1/1QN1PNP1/PP3PBP/R1B2RK1 w k - 4 10 | Nd2 | Is the move from a2 to e8 legal? | No | legality |
5r1k/pp4bp/1q2p2p/1b1p4/1N2R1B1/8/PP1Q1PKP/1R6 b - - 0 24 | dxe4 | What piece is on e3? | Empty | occupancy |
r4rk1/p1pbq2p/1p1n2pb/3Pp3/4P3/2N2PP1/PPQ2BB1/3RR1K1 w - - 2 20 | Be3 | Does White have any isolated pawns? | No | structure |
8/6pk/1P5p/8/8/8/KR1R1P2/5q2 b - - 31 60 | Qa6+ | Identify any White knight outposts on the board. | None | outposts |
3r1r1k/pR3p1n/1p2pb2/2p5/2P2B2/5P1Q/PP5P/1K6 w - - 3 27 | Bh6 | Identify any Black knight outposts on the board. | f5 | outposts |
r2r4/pb2kppp/4pn2/2P5/Q7/3qPN2/1P3PPP/R1B1K2R w KQ - 1 16 | Ne5 | Is the move from e3 to e4 legal? | Yes | legality |
2bq1k1r/Qp2np1p/5bp1/1P1p4/1B1p1P2/1N1P4/1PP3PP/5RK1 b - - 2 18 | b6 | What piece is on e5? | Empty | occupancy |
rnb1kbnr/pppp1ppp/5q2/4p3/2B1P3/5Q2/PPPP1PPP/RNB1K1NR b KQkq - 3 3 | Nh6 | Does White have any isolated pawns? | No | structure |
r4rk1/1p1qn2p/2nN1bp1/p1Ppp3/P5b1/2P2N2/1PB2PPP/R1BQ1RK1 w - - 4 18 | h3 | What is the material balance in this position? | White is up 1 pawn of material | material |
3Rk3/1p6/p1p2p2/1nP1pPr1/8/1P3B1P/P4PP1/3R2K1 b - - 1 36 | d7d8 | Is the White king in check? | No | check |
3n4/8/4kp2/8/4K3/8/8/8 w - - 2 60 | Kf4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2r1k2r/pbp1bppp/1pp5/4Pn2/8/1P3N2/PBP1NPPP/R2R2K1 w - - 3 14 | Nf4 | What piece is on e4? | Empty | occupancy |
3k4/R7/8/5p1R/1p3P2/p1b3P1/2r1P2P/5K2 w - - 0 41 | Rg5 | Is the move from h5 to g3 legal? | No | legality |
6k1/4rp1p/6p1/2pn4/3b1P2/N6P/1r4P1/1R2BR1K w - - 0 28 | Bh4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r4/2b2pk1/6p1/1q1P1p1p/1prP4/1N3Q1P/1P3PP1/3RR1K1 b - - 9 31 | Qxd5 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/8/8/5Kpk/8/6pP/6P1/8 b - - 3 75 | Kh4 | Is the Black king in check? | No | check |
2rb2k1/1p2qppp/p1rp4/P3p3/QR2P3/2P4P/1P2BPP1/3R2K1 w - - 1 31 | Rd3 | Are there any open files in this position? | No | files |
rnbqk2r/ppp2ppp/4pn2/3p4/1bPP4/4PN2/PP3PPP/RNBQKB1R w KQkq - 3 5 | f8b4 | Is the White king in check? | Yes | check |
2kr3r/p1p1np1p/1p1bbp2/2p5/N3PP2/2P1B3/PP3KPP/R4B1R w - - 0 15 | c4 | Is the move from g2 to e8 legal? | No | legality |
q4rk1/3b1pp1/rn5p/p2pP3/P2R3N/6P1/4QPBP/R5K1 b - - 0 33 | Ra7 | Identify any Black knight outposts on the board. | c4 | outposts |
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