fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1bqkb1r/pp3pp1/2n1pn1p/1Bpp4/3P4/5N2/PPP2PPP/RNBQR1K1 b kq - 1 9 | c4b5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqkb1r/pp1n1p1p/4p1p1/2ppP3/3P1P2/2N1BN2/PPPQ2PP/2KR1B1R b kq - 1 10 | Nc6 | Identify any Black knight outposts on the board. | None | outposts |
r1b2rk1/p3n1pp/q2b1p2/1p1p4/2pP1NP1/2P2P2/PPBB1Q1P/R1K4R w - - 2 21 | Qh4 | Does White have any isolated pawns? | No | structure |
1r1r2k1/5ppp/Rb1q4/7n/3P4/1B2BP2/5P1P/3Q2RK b - - 3 24 | Qd7 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r4k1/5pPp/p3pP2/3pP3/N1B1n1P1/8/2PK4/7R w - - 1 31 | Ke3 | Does Black have any isolated pawns? | Yes: a6, h7 | structure |
2r1k2r/1p3pb1/p2BB1pp/8/8/2N3NP/PRPn4/4KR2 b k - 0 21 | fxe6 | Does White have any isolated pawns? | Yes: a2, c2, h3 | structure |
rn1q1r2/pb3pp1/1p3b1k/2pp2N1/3P3P/2N1P3/PP3PP1/R2QK2R w KQ - 2 13 | Qc2 | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r1b1kb1r/1pp2ppp/p3pn2/8/2N5/5BP1/PP2PP1P/R1Bq1RK1 w kq - 0 10 | Rxd1 | Identify any Black knight outposts on the board. | None | outposts |
rnbqk2r/ppp1bppp/4pn2/6B1/3P4/2NB1N2/PPP2PPP/R2QK2R b KQkq - 3 7 | O-O | Does White have any isolated pawns? | No | structure |
3rr1k1/1bqnb1B1/ppp1p1p1/6N1/3P3Q/8/PPP2PPP/3R2K1 b - - 1 20 | Kxg7 | Does Black have any isolated pawns? | Yes: e6, g6 | structure |
rn1q1rk1/pb2bppp/1p3n2/2ppN3/3P4/5NP1/PP2PPBP/R1BQ1RK1 b - - 1 10 | Nbd7 | Is the move from f6 to e4 legal? | Yes | legality |
r3k2r/pbpp1p2/1p2pp1p/2bnP3/2N2P2/2P5/P3Q1PP/R4R1K w kq - 0 20 | exf6 | Are there any open files in this position? | No | files |
2r2k2/5ppp/pp4r1/8/6B1/6P1/PP3P1P/2R3K1 w - - 0 34 | Bxc8 | Is the move from g4 to h5 legal? | Yes | legality |
5r2/p1p4k/2p5/8/4Nrp1/3P4/PPP4R/4R1K1 b - - 3 27 | g2h2 | Is the Black king in check? | Yes | check |
3k3r/2Rb1p1p/2p2P2/1p2p1P1/3bP3/1PP2K2/7P/3R4 w - - 1 37 | Rxd7+ | Identify any Black knight outposts on the board. | None | outposts |
q4rk1/pbrnbp1p/6p1/2pp4/4P3/1PBB1N2/P1Q2PPP/2RR2K1 w - - 1 18 | e5 | What is the material balance in this position? | Equal | material |
r4rk1/5p1p/pb4PQ/3P1bP1/1p2pq2/3B4/PPP5/1K2R2R b - - 0 25 | Bxg6 | What piece is on g3? | Empty | occupancy |
2k3r1/1b3r1p/p2pn1qB/4p1p1/2p1P3/2PPQNP1/1P2KP1R/7R w - - 0 29 | dxc4 | Are there any open files in this position? | No | files |
4k1r1/1p2p3/p3N3/4n3/8/N3P3/P4Kr1/3R4 w - - 0 35 | h2g2 | Is the Black king in check? | No | check |
rnbqk1nr/ppppppbp/6p1/8/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 3 | f4 | Is the d-file open, semi-open, or closed? | closed | files |
q4rk1/p1p2ppp/4p3/3bP1N1/3PNn2/b7/2QR1PPP/4R1K1 b - - 1 23 | Ng6 | What piece is on h6? | Empty | occupancy |
r3r1k1/pp3ppp/8/q1bp1bB1/2Pnp1n1/P1N1P3/1P1N1PPP/1Q1RKB1R w K - 2 16 | cxd5 | What piece is on g6? | Empty | occupancy |
2r5/Q2b1k1p/2P2n2/3PpP2/1p2P3/5K2/1p6/8 w - - 0 54 | Qa2 | What piece is on d5? | White Pawn | occupancy |
5R2/4k3/1p4pQ/3P1B2/1p6/8/r3q2P/6K1 w - - 1 36 | d6+ | Does Black have any isolated pawns? | Yes: b4, b6, g6 | structure |
1r3rk1/5pb1/3p2p1/7p/2Q4P/P4P2/1P4P1/5K1R b - - 0 29 | Rxb2 | Is the move from f8 to d8 legal? | Yes | legality |
r1b2rk1/pp2ppbp/5np1/q3Q1B1/5P2/2N4P/PPP3P1/2KR1B1R b - - 0 12 | Qb6 | What is the material balance in this position? | Equal | material |
1r3rk1/p2n1p2/q1nQb1p1/2p5/2P1P3/1NP1BPPp/P3B2P/1R3RK1 b - - 0 21 | Nde5 | What is the material balance in this position? | White is up 2 pawns of material | material |
3rrnk1/4bpp1/pq6/1ppPPB2/P5pP/6P1/1P4K1/R1BQR3 b - - 0 27 | Qb7 | What piece is on a1? | White Rook | occupancy |
r1bn2QQ/p2pk3/2p1r3/1p2p3/2BqPn2/1P6/P1PP4/1K4R1 b - - 0 7 | Kd6 | Does White have any isolated pawns? | No | structure |
5rk1/3Q1ppp/n1p5/8/2P5/4bq2/PP6/RNBKR3 w - - 6 28 | Re2 | Does Black have any isolated pawns? | Yes: c6 | structure |
1r1q1rk1/p4p1p/3p1npQ/3NpP2/1p5P/1P3P2/1PP3P1/2KR3R b - - 0 18 | Nxd5 | Does Black have any isolated pawns? | No | structure |
2b2k2/4b1pp/p4n2/1p6/8/4P3/PP1B1PPP/3R2K1 w - - 0 20 | Bb4 | What piece is on f4? | Empty | occupancy |
rnb1kb1r/pppp2q1/5pp1/4p3/2B3QN/2P5/PPP3PP/R1B1K2R b KQkq - 1 10 | Kd8 | Is the White king in check? | No | check |
1k5r/pp1Q2pp/8/8/3q4/2B4P/P1P2PPK/R4R2 b - - 0 5 | Qxd7 | Is the d-file open, semi-open, or closed? | open | files |
r2q1rk1/p3n1b1/1p2P1pp/3pp3/1P6/4B3/P1B2PPP/R2QR1K1 w - - 0 20 | Ba4 | Is the Black king in check? | No | check |
8/5p1p/pN6/2pk1K2/P2b2P1/1P6/7P/8 b - - 8 45 | Kc6 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r2r2k1/1p3ppp/1q1p1n2/2b1p3/p1PpP3/3P3P/PP1BNPP1/1R1Q1RK1 w - - 0 1 | Bg5 | What piece is on c4? | White Pawn | occupancy |
8/5pkp/1p2p1p1/p2bQ3/5nq1/8/PPP2P1P/3NK3 b - - 4 32 | b8e5 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r1bq1rk1/ppp3bp/3p1nn1/3Pp1p1/2P1Pp2/2N2P2/PP1BB1PP/R2QNRK1 b - - 4 15 | h5 | Are there any open files in this position? | No | files |
4r3/p2p1p1k/3Bp1bp/2Pn1q2/1p1Q4/P3P1R1/1P3PP1/4KB2 w - - 4 26 | e4 | Identify any White knight outposts on the board. | None | outposts |
3K4/7p/3q4/p1p5/P7/6nk/5Q2/8 w - - 29 71 | a6d6 | Is the White king in check? | Yes | check |
2R2b1r/p2r1kpp/1n2Np2/1p2BQ2/3P4/P7/1q3PPP/5RK1 w - - 5 24 | Ng5+ | Does White have any isolated pawns? | Yes: a3, d4 | structure |
r6r/1p6/2p2k2/2Pp2p1/pP2p1B1/4P1KP/P4P2/1R6 w - - 0 30 | a5a4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
6k1/p3B2p/2p2pp1/3p3K/5r2/8/P6P/8 w - - 0 40 | g7g6 | Is the White king in check? | Yes | check |
r1q1kb1r/pp3ppp/2n1pn2/3p4/3P1B2/1QP2b1P/PP1N1PP1/R3KB1R w KQkq - 0 10 | Nxf3 | Is the Black king in check? | No | check |
8/2Pb2pp/1p2pk2/pP2p3/P3K3/1B6/5PPP/8 b - - 1 31 | Bc8 | Is the White king in check? | No | check |
1qr2rk1/5p1p/pp1ppPp1/8/2PNQ3/1P4Pb/P4P1P/R2R2K1 w - - 3 20 | Qh4 | What is the material balance in this position? | Equal | material |
2br1b2/1rq5/p2ppk2/7Q/2pNP3/2N1BP2/PPP5/2K5 w - - 0 30 | Nf5 | Identify any White knight outposts on the board. | g4 | outposts |
r2q1rk1/4bppp/p1b1pn2/1p1p4/3P1B2/1QN3P1/PP2PPBP/2R2RK1 w - - 0 14 | h3 | Is the Black king in check? | No | check |
8/8/8/5r2/4pPkp/8/4R2K/4B3 b - - 1 62 | g3e1 | What is the material balance in this position? | White is up 2 pawns of material | material |
4r1nk/3b3p/7Q/2pPpP2/ppP1P3/1P3K2/P7/8 w - - 4 50 | Qd6 | Is the move from f3 to g3 legal? | Yes | legality |
1qr3k1/4bp1p/p2p1np1/Nb1Pp3/1p2P1P1/PPr1B1NP/3Q1P2/R3R1K1 b - - 0 28 | bxa3 | What piece is on e3? | White Bishop | occupancy |
r4rk1/pp2bppp/1qb1p3/8/3P4/2BQ1N2/PP3PPP/R3R1K1 w - - 3 18 | b3 | Identify any Black knight outposts on the board. | d5 | outposts |
rn3rk1/ppp2ppp/3p2q1/3N1b2/3P4/8/PP3PPP/R1BQ1RK1 w - - 0 13 | c8f5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r6r/pppk1ppp/2q2n2/5Q2/3B4/1P1P1PP1/P1P4P/RN4K1 b - - 6 19 | b5f5 | Is the Black king in check? | Yes | check |
1r1q1rk1/ppp2ppp/2nb4/4pb2/8/2PP1NPP/P1P2PB1/1RBQR1K1 b - - 4 12 | h6 | Does White have any passed pawns? | No | structure |
2r4r/R3n3/4b1k1/2p1P1B1/4P3/2N5/PPP3PP/5RK1 w - - 1 21 | f7g6 | Identify any White knight outposts on the board. | d6, f5, f6 | outposts |
6k1/2p1npp1/p3b2p/8/P1NpP3/3P3P/2r2PP1/4R1K1 b - - 0 23 | a2a4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
8/p7/6p1/1r1R2Pp/4pk1P/2r2P1K/8/8 b - - 0 42 | f2f3 | Identify any Black knight outposts on the board. | d3, f3 | outposts |
8/8/5p2/8/p1Pb1k1Q/8/P3R2P/5K2 b - - 4 34 | h5h4 | Is the Black king in check? | Yes | check |
4rr2/2pk2p1/8/7p/2Q5/5pP1/PPPP1K1n/R1B5 w - - 0 25 | Qd5+ | Identify any Black knight outposts on the board. | g4 | outposts |
2rq1rk1/pb1p1p2/n3p2p/1p4p1/3Pn3/P3P1B1/1P1N1PPP/R2QKB1R b KQ - 7 15 | Nc7 | What is the material balance in this position? | Equal | material |
r1bq1k1r/2pnp1b1/3pp1Bp/p2nP3/Pp1P1P2/6N1/1PP3PP/R1BQ1RK1 b - - 2 14 | Kg8 | Does White have any isolated pawns? | No | structure |
1k6/1p6/8/4P3/P2rbPP1/7r/1K6/1RB2B2 b - - 11 36 | Rb4+ | Does White have any passed pawns? | Yes: e5, f4, g4 | structure |
r1b2rk1/2p2ppp/p2b4/1p6/3P2nq/1BP2Q1P/PP2R1P1/RNB3K1 w - - 2 17 | Nd2 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
r6r/pQ2R3/3Pn1k1/2p2q1p/8/2R3P1/P4P1P/6K1 b - - 0 28 | Rab8 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
rnbqkb1r/p4pp1/2p1pn1p/1p2P3/2pP3B/2N2N2/PP3PPP/R2QKB1R b KQkq - 0 8 | g5 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r4rk1/pb3pq1/2p1p2p/1p2P1p1/1bpP1P2/2N5/PPQ1B1PP/3R1RK1 b - - 0 17 | c5 | Does Black have any isolated pawns? | No | structure |
r1b2rk1/1pp1pp1p/B3q1pB/8/8/2p1QN2/2P2PPP/2KR3R b - - 1 16 | Qxe3+ | Are there any open files in this position? | Yes: a, d | files |
rnbq1r1k/1pN3bp/pn1P1p2/4p3/2p4N/8/PPB2PPP/R2QR1K1 w - - 2 22 | Qh5 | Are there any open files in this position? | No | files |
5r2/R2Q1pk1/3b3p/3Pp1q1/3nP3/1R4P1/PP3P2/6K1 w - - 1 30 | Qxd6 | Identify any Black knight outposts on the board. | None | outposts |
8/7p/p4kp1/2p1np2/2P5/PBP1R1PP/6PK/2r5 b - - 4 12 | a5 | Is the move from f5 to b6 legal? | No | legality |
5r2/6N1/p6p/1pnk1Pp1/4p1Pb/1P5P/P1P1R3/1K6 w - - 2 35 | d6d5 | Identify any Black knight outposts on the board. | f3 | outposts |
rnb1kbnr/1p1p1ppp/pq6/2p2P2/8/2NP2P1/P1PB3P/R2QK1NR w KQkq - 2 10 | b2b6 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2kr3r/pppq1pp1/4b3/7p/2P3n1/2NPPB2/PP2Q1PP/R4RK1 w - - 3 14 | d4 | Does Black have any passed pawns? | No | structure |
2kr3r/pp3ppp/2ppb3/4n3/2P1P2q/1PN2PN1/P2Q1KPP/R2R4 b - - 6 19 | g6 | Identify any White knight outposts on the board. | None | outposts |
3r4/6p1/7p/1pp1k2P/8/4q1b1/5RP1/Q2R2K1 b - - 5 42 | Rd4 | Identify any Black knight outposts on the board. | a4, b4, c4, d4 | outposts |
r1b2nk1/1p3p1p/1qpp2p1/p7/2PNr1P1/1P6/P5PP/1RBQRB1K b - - 0 17 | Rxe1 | What piece is on f4? | Empty | occupancy |
2bq1r1k/2p5/p2p2Q1/3N3P/2n1P1p1/5P2/r7/2KR2R1 w - - 1 25 | Qh6+ | What is the material balance in this position? | Black is up 4 pawns of material | material |
3r2k1/5pp1/5n2/5P2/8/2K4p/8/8 w - - 2 44 | d2d8 | What is the material balance in this position? | Black is up 10 pawns of material | material |
8/8/4kP2/R1n3PK/1r5P/8/p7/8 b - - 8 71 | Ra4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/p5kp/8/8/1PP2r2/2K5/1P5R/8 b - - 2 35 | Kg6 | What piece is on h7? | Black Pawn | occupancy |
8/7p/1r3nk1/5B2/8/6P1/8/5RK1 b - - 2 44 | h3f5 | Is the Black king in check? | Yes | check |
8/2p1n1kp/1p2qpp1/p3p3/P1N1P1PP/1PPQ1P2/8/6K1 b - - 0 31 | h5 | Is the move from f6 to c1 legal? | No | legality |
2r2rk1/pb1nq1pp/1ppbpn2/3pNp2/2PP4/1P3NP1/PB2PPBP/2RQ1RK1 w - - 8 13 | Nxd7 | What piece is on f2? | White Pawn | occupancy |
4R3/r2r1p1p/p5pk/8/8/2Q4P/PPP2PP1/4R1K1 w - - 7 26 | b7d7 | What is the material balance in this position? | White is up 11 pawns of material | material |
r4rk1/pbp2ppp/qp3N2/4p3/8/1P2B2P/P5P1/3RQR1K b - - 0 23 | g4f6 | Is the Black king in check? | Yes | check |
rn1qk2r/4bppp/p2pbn2/1p2p3/4P1P1/1NN1BP2/PPPQ3P/R3KB1R b KQkq - 0 10 | Nbd7 | Is the White king in check? | No | check |
1rbq1rk1/1p2p1b1/n1pp1npp/p4p2/2PP4/1QN1BNP1/PP2PPBP/2RR2K1 b - - 3 12 | Bd7 | What piece is on a4? | Empty | occupancy |
2k5/R7/3bp3/B1p1r2p/1PP5/P2K4/7P/8 w - - 1 40 | Bb6 | What piece is on b4? | White Pawn | occupancy |
rn2k2r/1p4pp/p3pq2/3p1b2/1b1P4/2N1P3/PP1BB1PP/R2Q1RK1 b kq - 1 13 | Nc6 | Identify any Black knight outposts on the board. | None | outposts |
2k1r3/pppq2pp/1bp2p2/7n/4P3/7b/PP1B3P/K1N1QR1R w - - 4 22 | Rf3 | Identify any Black knight outposts on the board. | e5 | outposts |
4r1k1/pp4pp/2b1qp2/8/2p1p2N/2P1Q1P1/P4PP1/3R2K1 b - - 3 27 | d2e3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rnb1kb1r/ppp1pppp/3q4/3p4/3Pn2B/5N2/PPP1PPPP/RN1QKB1R w KQkq - 6 5 | c3 | Is the move from h4 to g3 legal? | Yes | legality |
r1b1qrk1/p1n2pbp/3p2p1/1Ppn2B1/8/2N2N1P/PP2BPP1/R1Q1R1K1 b - - 1 14 | Nxc3 | Is the move from f8 to f6 legal? | No | legality |
1qr1kb1r/1b1n1ppp/pp1ppn2/3N4/2PNP3/1P4P1/P3QPBP/R1B1R1K1 b k - 3 13 | g6 | Is the move from f7 to c7 legal? | No | legality |
8/1p1k1pp1/p3p3/4Pn1p/1P1p1P2/P7/2r2BPP/4RK2 b - - 1 28 | Kc6 | What piece is on c5? | Empty | occupancy |
r1b1k2r/4bp1p/p1pppp2/q4P2/4P3/2N5/P1PQB1PP/1R3R1K b kq - 0 3 | h5 | What piece is on f4? | Empty | occupancy |
rn4k1/pq3pp1/4b2p/1Brp4/8/Q3PN2/PP3PPP/4K2R w K - 0 17 | Qxc5 | Is the move from e1 to g1 legal? | Yes | legality |
2kr3r/ppp5/3b4/1P1N2pp/P4p2/2B4P/4nPP1/R4RK1 w - - 2 26 | d4e2 | Is the White king in check? | Yes | check |
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