fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r4rk1/pp3pp1/2n3p1/2pp4/2B2PPq/3P4/PPPBQ3/2KR4 w - - 0 18 | e6d5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2r1r1k1/pp3pBp/3pp1n1/3q1p1Q/8/1NP4P/PP4P1/4RR1K b - - 0 23 | Kxg7 | Identify any White knight outposts on the board. | None | outposts |
8/kp5r/1R2N1p1/P3Pn1p/3p3P/2rR1PPK/8/8 w - - 1 61 | Nf4 | Is the White king in check? | No | check |
rnbqk2r/ppppppbp/5np1/8/3P1B2/5N2/PPP1PPPP/RN1QKB1R w KQkq - 2 4 | e3 | Is the move from h1 to g3 legal? | No | legality |
1r4k1/2p1Bpp1/p3p3/3p4/P2P4/2PnP1nP/5PP1/R5K1 b - - 0 21 | g5e7 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2kr3r/ppp2ppp/1n6/2bP4/4P3/P1N3P1/1Pn2PBP/1RBR2K1 w - - 1 16 | b4 | What is the material balance in this position? | White is up 1 pawn of material | material |
7r/1bq2kpp/3rpn2/pp6/5B2/1B5Q/PPP2PPP/2K1R3 w - - 0 22 | Rxe6 | What is the material balance in this position? | Black is up 4 pawns of material | material |
r2Qk1nr/ppp2ppp/8/2b1n3/4P1b1/5N2/PPP1BPPP/RNB1K2R b KQkq - 0 8 | d1d8 | Is the Black king in check? | Yes | check |
r7/8/2pbk3/pr2p1p1/R3P3/5PB1/5PK1/R7 w - - 0 29 | Rc1 | Does White have any passed pawns? | No | structure |
8/7K/R1np3p/3k4/p5P1/8/3N1P2/r7 b - - 5 64 | Kc5 | What piece is on a6? | White Rook | occupancy |
r7/pbp1bRk1/8/2p1P3/2B1n3/2N5/PPP3PP/R5K1 b - - 0 20 | f1f7 | Is the White king in check? | No | check |
5r2/4qp1k/b1pp2p1/4b1Pp/p1P1PNnP/Pr1B2Q1/R7/3R3K w - - 5 30 | b8b3 | What is the material balance in this position? | Black is up 4 pawns of material | material |
5r1r/6pp/p1k1P3/1p1p4/5n2/3RB3/PP3PPP/4R2K w - - 2 27 | Rc3+ | What is the material balance in this position? | White is up 1 pawn of material | material |
8/p3k1pp/8/2BP1q2/2Q5/P2p4/6PP/6K1 b - - 2 38 | e3c5 | What is the material balance in this position? | White is up 3 pawns of material | material |
rn1q1rk1/pbpp1pbp/1p2pnp1/8/2PP4/2N2NP1/PP2PPBP/R1BQR1K1 b - - 1 8 | Ne4 | What piece is on e8? | Empty | occupancy |
r3r1k1/p1p3bp/1p1pn1p1/3N1p2/2PPn3/5N1P/PP3PPB/R3R1K1 w - - 0 19 | Rad1 | What piece is on d1? | Empty | occupancy |
2kr3r/pp1bqp1p/2n2n2/2P5/8/2N1PB2/P4PPP/R1BQ1RK1 b - - 0 15 | Ne5 | What piece is on h5? | Empty | occupancy |
8/5b1k/8/4B1PP/6K1/8/8/8 b - - 0 10 | Be6+ | Is the d-file open, semi-open, or closed? | open | files |
n1k5/P1p5/2p5/2P1B3/3P2p1/3P1p2/3K4/8 w - - 1 44 | Ke3 | Is the move from e5 to h8 legal? | Yes | legality |
1qr2b1r/1Nk1npp1/2n4p/4p3/4PB2/8/PP3PPP/2RQR1K1 w Q - 0 7 | Bxe5+ | Identify any Black knight outposts on the board. | None | outposts |
8/8/1p4K1/8/6k1/4b3/6Q1/3q4 b - - 1 6 | Kf4 | What is the material balance in this position? | Black is up 4 pawns of material | material |
2R5/4rk2/7b/4p2P/4PP2/5KP1/8/8 b - - 8 74 | Re6 | Is the move from e5 to f4 legal? | Yes | legality |
3rk1r1/pp3p1p/2n1pp2/q7/4PP2/P1N5/1P4PP/R3QRK1 b - - 2 16 | Qb6+ | Is the Black king in check? | No | check |
3r1rk1/pp3ppp/8/2b1p3/1n6/1PN2P2/P1K3PP/R5NR w - - 5 18 | c6b4 | Is the White king in check? | Yes | check |
r1bq1k1r/pp2b1pp/5n2/2p5/2BnP3/2NQ4/PPP2PPP/R1B2RK1 b - - 3 11 | Be6 | Are there any open files in this position? | Yes: d | files |
r5k1/5pp1/7p/P2p4/8/P1R3PP/r3PPK1/1R6 b - - 4 30 | Rxa5 | Does White have any isolated pawns? | Yes: a3, a5 | structure |
rnbqkb1r/ppppp2p/5np1/5p2/3P4/5NP1/PPP1PP1P/RNBQKB1R w KQkq - 0 4 | Bg2 | Identify any Black knight outposts on the board. | None | outposts |
5rk1/5rpp/p5q1/1pnp4/2pNp2P/2Pb4/PP1Q1BP1/3BR1KN w - - 1 28 | h5 | Does White have any passed pawns? | No | structure |
5rk1/pbr2pp1/1p1qp2p/n7/3PP1N1/4Q3/P4PPP/3RRBK1 w - - 10 20 | e5 | Does White have any passed pawns? | No | structure |
rn2r1k1/pp3p1p/1n4p1/2bPq1B1/5Q2/1BN2P2/PP4RP/R3K3 w Q - 0 19 | Re2 | What is the material balance in this position? | Equal | material |
2r5/5k1Q/p3pb2/1p1p4/3P1Pp1/P7/2r2BK1/8 b - - 5 47 | Ke8 | Is the move from c8 to d6 legal? | No | legality |
3r1rk1/1bq1bppp/p2ppn2/1p6/3BPP2/P1N3Q1/1PP1B1PP/4RR1K b - - 2 15 | Rd7 | What is the material balance in this position? | Equal | material |
8/2R5/4kp2/2P3p1/2N1P3/3p1pP1/4bK2/5r2 w - - 5 46 | a1f1 | Is the White king in check? | Yes | check |
r1r1qnk1/5pb1/2P2np1/2P1p3/pP6/P6P/1BQN1pB1/1R1R3K w - - 2 31 | Nc4 | Is the Black king in check? | No | check |
4rbn1/1q3p1k/p4B1p/1pp1pP2/6PQ/2P2b1P/PPB1RP2/3R2K1 b - - 0 32 | Bxe2 | What piece is on h2? | Empty | occupancy |
7b/8/k7/P1PK3P/8/1N6/8/8 b - - 0 164 | Kb7 | Is the move from h8 to a1 legal? | Yes | legality |
r2qk2r/ppp1bpp1/5n2/3P3p/2BP1QbP/2N2N2/PPP3P1/R4K1R b kq - 0 14 | O-O | Is the f-file open, semi-open, or closed? | semi-open for White | files |
r6r/pb2nkpp/8/1P1n4/RbpN4/6P1/1P2PPBP/2BR2K1 b - - 4 18 | a5 | Identify any Black knight outposts on the board. | b3 | outposts |
2kr3r/1pp5/p1n1q1pp/4pn2/4N2b/1PN1R2Q/PBPP2PP/2K2R2 b - - 3 21 | b6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r1b1r1k1/pp5p/6p1/3nBp2/2pPp3/P1P1PP1B/6PP/4RRK1 w - - 3 22 | Rf2 | Is the White king in check? | No | check |
2rqrbk1/Np3p2/5n1p/3p1Np1/8/P2B2BP/1P3PP1/R2R2K1 b - - 0 21 | b5a7 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rnbqk2r/ppp2ppp/3b1n2/3p4/3P1B2/2N5/PPP2PPP/R2QKBNR w KQkq - 0 6 | Qd2 | Is the move from b2 to g6 legal? | No | legality |
r2q1rk1/1p1b4/2p2n1p/p1b1Ppp1/2P1P3/1PN3P1/P1Q3BP/R1BR3K b - - 2 21 | Ng4 | Identify any White knight outposts on the board. | f6 | outposts |
rnbqkb1r/pp1ppppp/5n2/8/3P4/5N2/PPP2PPP/RNBQKB1R b KQkq - 0 4 | d5 | Are there any open files in this position? | No | files |
6k1/5pp1/p2p3p/8/R3P1P1/P6r/5P2/6K1 w - - 0 38 | Rxa6 | What piece is on h7? | Empty | occupancy |
2k5/ppp2p1p/5B2/6p1/2b2rP1/r6P/5K2/8 w - - 8 37 | e4f4 | Is the White king in check? | Yes | check |
1r4qr/8/kn6/pp1pP3/b1pP1PPn/P1P1NQ1p/R1P4B/5RK1 w - - 1 37 | Qg3 | Identify any Black knight outposts on the board. | a4 | outposts |
rnb2r2/ppp1q1kp/6p1/4Np2/2BPnN2/7R/P4PPP/3Q1RK1 b - - 5 4 | Nc6 | Is the Black king in check? | No | check |
2r3k1/4pNb1/1p4P1/p7/P2p4/3Qp3/2P3q1/3KR3 b - - 0 52 | Rc3 | Is the move from g2 to d2 legal? | Yes | legality |
8/5p2/4b2k/3p4/PR1P3p/6K1/6R1/7r w - - 0 71 | Kf2 | Does White have any isolated pawns? | Yes: a4, d4 | structure |
4rrk1/1bqnb1pp/p3p3/2pp2P1/P4P2/4B1N1/1PP1Q1BP/4RRK1 b - - 1 20 | Bd6 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
2k3r1/1pp2p2/p1n1p2b/3nP2q/3P4/P2Q1NP1/1PP1N3/1K1R2B1 w - - 11 26 | d8g8 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r1qk2r/p1pnbppp/2B1b3/8/3p4/2N5/PPP1QPPP/R1B1R1K1 w k - 0 14 | Nb5 | What piece is on c3? | White Knight | occupancy |
rnb1k2r/ppp2ppp/5n2/bN4B1/4p3/2N5/PPP2PPP/R3KB1R w KQkq - 5 9 | b4 | Are there any open files in this position? | Yes: d | files |
r3r1k1/1p3pbp/1pp3p1/8/1Qb5/2n2N2/P4PPP/3R2KR b - - 1 24 | Ra4 | Is the move from a8 to a4 legal? | Yes | legality |
r5k1/2R3p1/5b1p/8/3P1P2/p1P1B1P1/2r3P1/R5K1 w - - 0 33 | a4a3 | What is the material balance in this position? | White is up 2 pawns of material | material |
r4k2/r2N1ppp/p1b5/3pR3/PP6/3B1P2/6PP/2R3K1 b - - 0 24 | Bxd7 | Identify any White knight outposts on the board. | a5 | outposts |
6k1/7q/1pbp4/p1p3p1/P1P1PpP1/2PR1P1r/2B3K1/5Q2 b - - 8 43 | Rh2+ | Does White have any isolated pawns? | Yes: a4, c3, c4 | structure |
7r/2qn2k1/B3p2p/3b3P/3R4/1P2b3/P1P2rP1/B6K w - - 0 31 | Rg4+ | Is the Black king in check? | No | check |
8/2b2kp1/p7/3P3p/2P1b3/4Np2/P2B3P/6K1 b - - 0 37 | Bd6 | Identify any Black knight outposts on the board. | None | outposts |
6k1/5p1p/1p2r1p1/1qp5/8/P2pP1RP/5KP1/2Q5 w - - 0 39 | d4d3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
3N4/p1k1ppbp/2p2np1/8/PP6/4B1P1/4bP1P/4R1K1 b - - 2 25 | Kxd8 | Identify any Black knight outposts on the board. | d5 | outposts |
r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NPP2/2N5/PPP1Q1PP/R3KB1R b KQkq - 2 8 | Qc7 | Is the move from h7 to h5 legal? | Yes | legality |
7r/1p3pk1/1n1q1p2/3P3r/1P3P1p/4RQ1P/2B3P1/3R2K1 b - - 4 30 | Nxd5 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r4k1/4pp1p/3p2p1/3P4/q1pbPP2/P1NrB1PP/QP2R1K1/8 b - - 4 30 | Bxc3 | Is the move from h7 to h5 legal? | Yes | legality |
r1bq1k1r/pppnb1pp/4pn2/6N1/3P4/8/PPP2PPP/R1BQKB1R w KQ - 2 9 | Nxe6+ | Does Black have any passed pawns? | No | structure |
r4r2/1b1n1pkp/pp1p2q1/1PpP1p2/P1P1p3/6NP/3QBPP1/R4RK1 b - - 3 23 | Nf6 | Is the move from a6 to d6 legal? | No | legality |
8/8/8/8/3p4/1kp5/2R5/1K6 w - - 0 54 | Rg2 | Is the h-file open, semi-open, or closed? | open | files |
rn1qkb1r/ppp2ppp/1n2p3/4Pb2/2PP4/2N2N2/PP4PP/R1BQKB1R b KQkq - 0 8 | Bb4 | Does Black have any passed pawns? | No | structure |
5rk1/p2Bn3/1p2P2p/1P3rp1/P2bp3/4B2P/4RPP1/6K1 w - - 0 33 | Bxd4 | Are there any open files in this position? | Yes: c, d | files |
r2r2k1/pp3ppp/4n3/3p1q2/8/P3P3/1P2BPPP/R2Q1RK1 w - - 2 17 | Bg4 | Is the move from a1 to c1 legal? | Yes | legality |
8/ppp2Qpk/3b3p/3q3B/8/3K3P/PPP2P2/R7 w - - 1 23 | g2d5 | Is the White king in check? | Yes | check |
4q1k1/4n1p1/6P1/8/ppP1pQ2/4P3/1P2BK2/8 w - - 5 43 | c5 | Does Black have any isolated pawns? | Yes: e4, g7 | structure |
rnbq1rk1/p5p1/1ppbpn1p/6N1/1P5P/3BP3/PBQP1P2/RN2K2R w KQ - 0 15 | Bc4 | What piece is on d6? | Black Bishop | occupancy |
rnbq1bnr/ppp3k1/7p/3B4/4PppP/8/PPPP2P1/RNBQK2R w KQ - 1 9 | Bxb7 | Are there any open files in this position? | No | files |
2k3rr/pp1b4/4pp1B/1P1p4/8/P2BPP2/7b/RN1Q1R1K b - - 0 20 | Rxh6 | Are there any open files in this position? | Yes: c, g, h | files |
4rrk1/p1p3b1/1p2pp1B/7R/8/5B2/PPP5/2KR4 w - - 0 27 | f7f6 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r4k1/2p1qppp/6b1/2R5/3P4/PBQ4P/1P2rP1K/6R1 w - - 4 33 | Qg3 | Does White have any passed pawns? | Yes: a3 | structure |
5r2/p4pk1/br4pP/K7/P7/6P1/8/2q1n3 b - - 0 41 | h5h6 | Is the Black king in check? | Yes | check |
8/8/3kpn2/5p2/1pBPpPp1/pP2P1P1/P2K4/8 w - - 3 3 | Ke1 | What piece is on g3? | White Pawn | occupancy |
5r2/pb1k4/1p2pB2/3pP2p/1P1b1R2/6rP/P4RP1/6K1 w - - 0 32 | Rxd4 | Identify any White knight outposts on the board. | None | outposts |
8/8/Q7/2pnk2P/1p6/2p2P2/P1P2P2/1R4K1 w - - 2 43 | d6e5 | What is the material balance in this position? | White is up 13 pawns of material | material |
1rb2r1k/3n2bp/2R2p1q/pp1B1P2/4pP2/4B1Q1/PPP4P/2K3R1 w - - 4 27 | Rc7 | What piece is on b4? | Empty | occupancy |
6k1/1r4p1/4Kp1p/8/5B1P/3B2P1/5P2/8 w - - 21 56 | Kf5 | What piece is on g7? | Black Pawn | occupancy |
r3rk2/pp3p1P/4q1p1/3pPp2/8/P2B2Q1/1PP5/1K2RR2 b - - 0 30 | Ke7 | Is the move from f8 to g7 legal? | Yes | legality |
r2q1r1k/pp1bp1bp/2np2p1/5P2/3N1P2/2N1B2P/PPPQ2P1/3R1RK1 b - - 0 14 | gxf5 | Is the White king in check? | No | check |
r1b2k2/pp3p2/7r/q2Pp1bP/4P1B1/2P4R/P5N1/R2QK3 b Q - 2 27 | Qc5 | Is the move from a7 to f4 legal? | No | legality |
8/5R1p/8/2rp1k2/5PpK/4P3/5P2/8 b - - 0 107 | Kg6 | Is the move from f5 to c3 legal? | No | legality |
r1bq1rk1/ppppbpp1/2n2n1p/1B2p3/4P2B/2PP1N2/PP3PPP/RN1QK2R w KQ - 2 8 | Bxc6 | Is the White king in check? | No | check |
3nk3/1p3p1p/p5p1/PP2b3/2P1B2P/8/3B1PP1/6K1 w - - 1 33 | Bxb7 | Is the move from e4 to f3 legal? | Yes | legality |
4r1k1/1pp2ppp/1b3r2/p2P4/1P6/5NPb/P3Bn1P/RQ2R1K1 b - - 0 25 | a4 | Does Black have any passed pawns? | No | structure |
rnbqk2r/pp2bppp/3p1n2/4p3/2P1P3/1N3P2/PP4PP/RNBQKB1R b KQkq - 0 7 | a5 | Does White have any isolated pawns? | No | structure |
7k/6Rp/p2n2pB/3P4/pP4P1/3b3P/1r3P2/6K1 w - - 0 36 | Rd7 | What piece is on f2? | White Pawn | occupancy |
4kbB1/P7/6p1/7p/3Bb2P/1K6/1N4r1/8 b - - 0 37 | Kd8 | Is the move from h5 to d7 legal? | No | legality |
r1br2k1/2q1bppp/p1np1n2/6B1/1p2PNP1/1N1B4/PPP4P/1K1RQ1R1 b - - 0 17 | Qa7 | Is the move from c6 to e5 legal? | Yes | legality |
r1bqr1k1/1p3pbp/2pp1np1/p1n5/2PNP3/2N1BP2/PPQ1B1PP/R2R2K1 b - - 1 13 | Nfd7 | Does Black have any isolated pawns? | No | structure |
r2qk2r/pp1nbpp1/2p1pn1p/7P/3P1B2/3Q1NN1/PPP2PP1/2KR3R w kq - 2 13 | Ne5 | Is the move from f4 to g6 legal? | No | legality |
3Q4/1b5p/pk2p3/1pp1p1P1/4P1nq/2NP4/PPP3P1/5RK1 b - - 6 26 | Ka7 | Does White have any isolated pawns? | Yes: g2, g5 | structure |
5rk1/3Q2p1/1p2p3/p3p3/P2nP3/3P2pP/1P2r1P1/6RK b - - 2 35 | Rxb2 | Does Black have any isolated pawns? | Yes: e5, e6, g3, g7 | structure |
k1rb4/p3r3/PP1P1p2/3P2q1/7p/1R5P/2R3PK/6B1 b - - 0 4 | Rec7 | Does White have any passed pawns? | Yes: d5, d6 | structure |
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