fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
8/5p1k/4b3/3p4/P2P4/1R4Rp/r4K2/8 w - - 6 75 | Kg1 | Is the move from f2 to f3 legal? | Yes | legality |
6nk/R7/7p/4K1pP/6P1/8/8/8 w - - 8 20 | Ke6 | What piece is on g8? | Black Knight | occupancy |
6rk/3b2pp/p3p2B/3pP3/2pP1R1Q/4P3/n1q3PP/5BK1 w - - 1 27 | Bxg7+ | Does Black have any isolated pawns? | Yes: a6 | structure |
5r2/1p1Np1k1/2ppB3/p1P3p1/8/1P2RpP1/P6r/5K2 b - - 12 41 | Re2 | Does White have any passed pawns? | No | structure |
3r1rRk/5p1p/2p1b2P/p7/1p6/2B5/PPP5/2K5 b - - 2 2 | Kxg8 | What is the material balance in this position? | Black is up 6 pawns of material | material |
rnbqk1nr/pppp1ppp/8/2b1p2Q/2B1P3/8/PPPP1PPP/RNB1K1NR b KQkq - 3 3 | Nc6 | Does White have any isolated pawns? | No | structure |
r1b1r1k1/p1n2p1p/1p1p2p1/2pP4/P2bP3/7P/1PQNB3/R1BNRK2 b - - 0 18 | Bxh3# | What piece is on g8? | Black King | occupancy |
k1K5/2PR4/8/1p5r/8/8/8/8 b - - 0 82 | Ka7 | Does White have any isolated pawns? | Yes: c7 | structure |
rn1qkbnr/pp3ppp/2p1p3/3pPb2/3P3P/8/PPP1BPP1/RNBQK1NR b KQkq - 0 5 | h6 | What piece is on d4? | White Pawn | occupancy |
rq3nk1/1b2brpp/p2p4/3P1BP1/1p1B1P1P/5Q2/PPP5/2K1R2R w - - 1 21 | Qe4 | What piece is on d7? | Empty | occupancy |
r2qk2r/ppp2ppp/3p4/2b1n3/2P3b1/1PN1P1P1/P4PBP/R1BQK2R w KQkq - 1 11 | f3 | Is the move from g2 to d1 legal? | No | legality |
r3qr1k/pp3pbp/2pn4/7Q/3pP3/2NB3P/PPP3P1/R4RK1 w - - 0 19 | Rf6 | Is the move from a1 to b1 legal? | Yes | legality |
1R6/4p1kp/4p1p1/pR6/7P/6q1/8/7K b - - 1 32 | a4 | Are there any open files in this position? | Yes: b, c, d, f | files |
r1bq1rk1/5pb1/1p1p1np1/1p1Pp2p/4P2P/2N2P2/PP1QN1P1/1K1R1B1R b - - 1 14 | b4 | What piece is on a1? | Empty | occupancy |
r5k1/6pp/8/2pp4/1p2bb2/pP6/P2NRPPP/2KR4 b - - 3 30 | c4 | Identify any White knight outposts on the board. | None | outposts |
r3rk2/pp3p2/4q1pP/3pPp2/8/P2B2Q1/1PP5/1K2RR2 w - - 2 30 | h7 | Identify any Black knight outposts on the board. | e4, g4, h5 | outposts |
3r1n2/7k/pN4pp/4BP2/8/8/b1P3PP/5R1K w - - 0 33 | h3 | Does Black have any passed pawns? | Yes: a6 | structure |
1R2n2r/1N2kpp1/p3p3/4n2p/2P4P/5bR1/B1P5/1K6 w - - 4 36 | Na5 | What piece is on e3? | Empty | occupancy |
b7/P3B3/2r2P2/8/8/8/1K3R2/3k4 b - - 2 61 | d6e7 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/R5k1/3KP3/8/8/8/8/1r6 b - - 1 71 | Kf6 | Identify any White knight outposts on the board. | None | outposts |
rnbqk2r/ppppbppp/3n4/4p2Q/8/1BN5/PPPP1PPP/R1B1K1NR w KQkq - 4 6 | Nf3 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/5pp1/4pn1p/8/2RP1B2/b3PNP1/5P1P/R5K1 b - - 0 26 | g5 | Are there any open files in this position? | Yes: a, b, c | files |
8/R7/6kp/P5p1/5p2/4n2P/6r1/7K b - - 1 37 | g1h1 | What is the material balance in this position? | Black is up 4 pawns of material | material |
1r4k1/4bpp1/3p1q1p/2pPp3/r1P5/1P1P1P2/3QN1PP/R4RK1 b - - 0 21 | a2b3 | What is the material balance in this position? | White is up 1 pawn of material | material |
5r2/7k/p7/p1p1p1N1/4P1R1/2KPP2r/P1P5/4n3 b - - 6 38 | f7g5 | Is the Black king in check? | Yes | check |
r3k3/p1p5/1p1b2Q1/2nP2B1/3p4/3P4/PPP3PP/5RK1 b q - 0 22 | h7g6 | Is the Black king in check? | Yes | check |
8/8/6p1/1P4k1/2K5/2P4P/5b1P/8 b - - 0 45 | Kh4 | Is the move from f2 to f6 legal? | No | legality |
r2qnrk1/3nbppp/3p4/4pPP1/1p2P3/1P2B3/1P1QN2P/1K1R1B1R b - - 0 9 | Ra1+ | Does Black have any isolated pawns? | Yes: b4 | structure |
2k5/pqr2p2/2r5/R2B4/1ppB4/6P1/1P3P1P/5RK1 w - - 1 28 | h4 | What piece is on d8? | Empty | occupancy |
r1b2rk1/2q2ppp/p1N1pn2/1p1p4/5P2/PP1Bb3/1BP3PP/RN1Q1RK1 w - - 0 13 | Kh1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
2Q5/8/3p4/3krK2/8/8/8/8 w - - 20 11 | Kf6 | Identify any White knight outposts on the board. | None | outposts |
1k4r1/p4N2/1bb2P2/4P2p/2p5/1PB4P/P2R3K/8 w - - 0 43 | h4 | Is the White king in check? | No | check |
r5k1/2qb1r1p/p1n3p1/3pP1P1/Pp6/3QB3/1PP1N1P1/2KR3R b - - 0 22 | Rc8 | What is the material balance in this position? | White is up 1 pawn of material | material |
1r5k/p5pp/6p1/2Q5/1K4B1/4P2P/P1P5/5q2 w - - 1 38 | d8b8 | Is the White king in check? | Yes | check |
2r2rk1/1R2qppp/n3p3/2bp4/8/B4N2/5PPP/1Q2RBK1 b - - 0 23 | Bxf2+ | What piece is on f8? | Black Rook | occupancy |
rnb1k1nr/p2pppbp/2p3p1/1p6/3PP3/q1N1BN2/P1PQ1PPP/1R2KB1R w Kkq - 0 8 | Bxb5 | Are there any open files in this position? | No | files |
8/k5q1/3Q4/P1K5/1P6/8/8/8 w - - 7 7 | Qd4 | Is the move from b4 to g8 legal? | No | legality |
1n1q1rk1/1r3ppp/4p3/1pQp4/1P2P3/2R2BP1/P4P1P/3R2K1 b - - 0 21 | Nd7 | Is the White king in check? | No | check |
8/8/3k1p2/p6R/P2K1Nnp/1P6/8/7r w - - 2 51 | Ke4 | Does White have any isolated pawns? | No | structure |
r2k3r/1p3ppp/p1n1b3/4p3/1b4P1/2N1B2P/PPP2PB1/2KR3R b - - 4 14 | Ke7 | Is the Black king in check? | Yes | check |
8/7R/8/5r2/8/8/4K1p1/6k1 w - - 6 74 | Rh8 | What piece is on g2? | Black Pawn | occupancy |
r2qkb1r/1p2pppp/p1n1bn2/3p4/3P4/2NNPQ1P/PP3PP1/R1B1KB1R w KQkq - 1 11 | Bd2 | Is the c-file open, semi-open, or closed? | open | files |
q4rk1/4ppbp/pn4p1/2p5/3P4/2N1P2P/PP3PP1/R1BQ1RK1 b - - 3 17 | a4d1 | What is the material balance in this position? | White is up 6 pawns of material | material |
8/1pp2n2/pkP5/3q4/P7/5P1P/1B3QP1/7K b - - 8 53 | c2f2 | Is the Black king in check? | Yes | check |
8/8/8/2p3p1/4Q3/1pkn1KP1/8/8 w - - 4 62 | Ke3 | Identify any Black knight outposts on the board. | b4, d4 | outposts |
rn1qk2r/pb2bppp/1pp1pn2/3p4/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 w kq - 0 8 | Nd2 | Are there any open files in this position? | No | files |
8/5p2/3Npk2/3p2pp/3K4/5RP1/4RP2/r7 b - - 2 37 | d3f3 | Is the Black king in check? | Yes | check |
8/pp5k/7p/3P1q2/3R1P2/8/PP3K2/8 w - - 3 41 | g4f5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1b2rk1/5ppp/p3p3/1pbp4/8/2PB1N2/PP1N1PPP/n4RK1 w - - 0 17 | b7b5 | What is the material balance in this position? | Black is up 6 pawns of material | material |
2k5/1p4p1/p1r5/3nBp1p/7P/5K2/P4PP1/2R5 w - - 6 33 | Rd1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2r5/pp1bppkp/3p1npQ/q7/2r1P1P1/2N2P2/PPP1N3/2KR3R b - - 1 19 | Kg8 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b1kb1r/1p1n1ppp/p1q1pn2/2p5/2PP4/2N1BN2/PP2BPPP/R2QK2R b KQkq - 4 9 | cxd4 | What is the material balance in this position? | Equal | material |
5rk1/7p/p4qr1/1p1P1p2/2p2Q2/2P2PN1/4PK1P/3R4 b - - 0 31 | Qxc3 | Identify any White knight outposts on the board. | c6, e6 | outposts |
1b6/1P6/8/pB6/P3Kpp1/6k1/8/8 w - - 2 62 | Kf5 | Is the move from b5 to d7 legal? | Yes | legality |
8/8/6k1/pp2q3/3p1QP1/P2P2K1/2P5/8 b - - 0 2 | Qxf4+ | Does Black have any passed pawns? | No | structure |
1rr3k1/3p1p2/4p1p1/pP2P2p/3P1P2/8/1R2R3/2K5 w - - 1 31 | f8c8 | Is the White king in check? | Yes | check |
rnbqr1k1/pp1n1pbp/3p2p1/1BpP4/4PB2/2N2N2/PP3PPP/R2QR1K1 b - - 8 11 | Bf8 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
r1b2rk1/3nppbp/p2p2p1/1ppP4/3PP3/4BP2/PP1RN1PP/1K3B1R b - - 0 13 | f5 | Is the move from f7 to h8 legal? | No | legality |
r1b5/p3nkpp/1p3n2/8/3P4/2N5/PP3PPP/2RR2K1 w - - 0 22 | Nb5 | Does White have any passed pawns? | Yes: d4 | structure |
2b1q1rk/4b3/1pN1Pp1P/2np2Q1/r7/8/1BP3P1/4RRK1 w - - 1 32 | Rxf6 | Is the move from g5 to f8 legal? | No | legality |
Q4bk1/5p1p/1p6/2p1P3/2qp1B2/6P1/4P2P/6K1 w - - 1 34 | Bh6 | Is the move from g3 to h1 legal? | No | legality |
r3r1k1/4qpp1/p2b1n1p/1ppP4/2P1pP1B/8/PP1QB1PP/3R1RK1 w - - 0 20 | b3 | What piece is on a8? | Black Rook | occupancy |
5r1k/pp1b3p/2pb3q/3p4/3P1p2/2P2Q2/PP2NP1P/3BRRK1 w - - 2 27 | Kh1 | What piece is on b1? | Empty | occupancy |
r1b1r1k1/2p1qpp1/2p5/p3p1p1/2P1P3/1P2Q1NP/P4PP1/3RR1K1 b - - 0 22 | f6 | Identify any White knight outposts on the board. | a4, c4 | outposts |
r2q1rk1/pb1nbppp/1p1p1n2/3PpN2/2P5/2NB4/PP3PPP/R1BQ1RK1 w - - 4 12 | Qf3 | What piece is on c2? | Empty | occupancy |
8/8/8/3k4/1p1pp1p1/1P2PnP1/3NKP2/8 w - - 12 58 | Nxf3 | What is the material balance in this position? | Equal | material |
6k1/p4p1p/r3p1p1/1p6/3PRP2/1PP3bP/1B4P1/7K b - - 2 38 | Ra2 | Is the move from e6 to b2 legal? | No | legality |
3rr1k1/pbq2pb1/1pn3pp/2p1P1n1/P2p4/2P3BP/1PQN1PPN/3RRBK1 w - - 1 24 | Ng4 | Identify any White knight outposts on the board. | d6 | outposts |
2b4r/1pN2kpp/q3pp2/p7/1n1Q4/1K6/P2P1nBP/R1B4R b - - 3 23 | Qe2 | Does White have any isolated pawns? | Yes: a2, d2, h2 | structure |
8/p7/6pk/3p1pR1/3N4/1P2P3/P4B1K/1q6 w - - 0 45 | Rg2 | What piece is on e5? | Empty | occupancy |
rnbqkbnr/ppppp1pp/8/8/3Pp3/8/PPP2PPP/RNBQKBNR w KQkq - 0 3 | Nd2 | What piece is on f3? | Empty | occupancy |
4k2r/1p1bqpp1/pb6/3pPpN1/PP3P1p/2p5/2P1Q1PP/R1R4K w k - 0 22 | Qf3 | Identify any White knight outposts on the board. | d6 | outposts |
Q2n3r/p3kppp/1qBRpn2/8/8/2N2N2/PP2KPPP/R7 w - - 1 17 | Rad1 | Is the move from a8 to a7 legal? | Yes | legality |
3k4/R7/P1p5/2Pp4/1p6/r5p1/1K4P1/8 b - - 0 52 | Ra5 | What piece is on e8? | Empty | occupancy |
3q1rk1/2r1ppb1/p4np1/1p1bN1Bp/3P3Q/1BP4R/P4PPP/4R1K1 w - - 0 23 | Bc2 | What piece is on h4? | White Queen | occupancy |
8/1Kbk4/3P3p/2P1p1pP/4P1P1/8/8/8 b - - 0 68 | Bd8 | Is the White king in check? | No | check |
rn2kb1r/ppp1pppp/5n2/q7/3P2b1/2N2N1P/PPP2PP1/R1BQKB1R b KQkq - 0 6 | Qh5 | Is the move from b7 to a2 legal? | No | legality |
R7/P4pk1/7p/7P/3p2p1/r5P1/4PPK1/8 b - - 0 36 | Kh7 | Are there any open files in this position? | Yes: b, c | files |
r3r1k1/1p2p3/2npn1PB/q7/p3PP1Q/1P3B2/P1Nb4/1R3bK1 w - - 0 26 | Bg7 | What piece is on e7? | Black Pawn | occupancy |
2k1r3/pppq2pp/1bp2p2/7n/4P3/5R1b/PP1B3P/K1N1Q2R b - - 5 22 | Bg2 | Does White have any passed pawns? | No | structure |
3rk1r1/3n1p2/bq2pb1p/1N1p1Pp1/B2P4/2P4P/1P2Q1P1/R4RK1 w - - 1 28 | e7f6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
k1r4r/pR1b2pp/Pp2pp2/1p6/3PP3/N3KPP1/7P/2R5 w - - 4 35 | Rxd7 | Does Black have any passed pawns? | Yes: b5, b6 | structure |
6rk/pQ3p2/3b1p2/3ppNrp/8/1P2P1P1/P4P1P/R4RK1 w - - 1 26 | g7g5 | Identify any White knight outposts on the board. | a4, h4 | outposts |
r1bq1n1r/2p1pBbk/3pp2p/p2nP2Q/Pp1P1P2/6N1/1PP3PP/R1B2RK1 w - - 7 17 | f5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r5k1/1p1R1R1p/p5p1/8/P3n1BP/8/1Pr3K1/8 w - - 3 33 | Kg1 | What is the material balance in this position? | Black is up 1 pawn of material | material |
rnbqk2r/ppp2pbp/4pnp1/3p4/5PP1/1P2P3/PBPPB2P/RN1QK1NR b KQkq - 2 6 | Nxg4 | Is the move from b7 to b5 legal? | Yes | legality |
1r3r1k/1b2bppp/p1qp4/1p3PP1/3B3Q/1PN2R2/1PP4P/5RK1 b - - 4 22 | b4 | Is the move from e7 to f6 legal? | Yes | legality |
8/1R6/8/p4Kp1/r1p2b2/2k5/8/8 w - - 0 61 | c5c4 | What is the material balance in this position? | Black is up 6 pawns of material | material |
r3q1k1/ppp2ppp/1bbp1n2/8/4P3/5N1P/PP1B1PP1/R2QR1K1 w - - 9 17 | Be3 | Are there any open files in this position? | No | files |
rn2k2r/pp3ppp/5B2/4pP2/6K1/2q5/P4PPP/R2Q3R b kq - 0 15 | Nd7 | What piece is on c3? | Black Queen | occupancy |
4K3/5P2/1p5R/8/P1k5/4r2p/8/8 w - - 9 71 | f3e3 | Is the White king in check? | Yes | check |
r3r3/pp1k1p1P/4q1p1/1B1pPp2/7Q/P7/1PP5/1K2RR2 b - - 4 32 | Kc7 | What piece is on e8? | Black Rook | occupancy |
r1rq2k1/5pp1/p2Bp2p/nR1pP3/P1pP1n2/2P2N1P/1RQ2PP1/6K1 w - - 0 24 | Rb6 | Identify any White knight outposts on the board. | None | outposts |
r2r2k1/pb1nbp1p/1p2pnp1/8/qPP5/P2B1N1P/1B1NQPP1/1K1R2R1 w - - 1 18 | Rge1 | Is the move from d1 to e8 legal? | No | legality |
2kr3r/ppp1b3/6p1/4p2p/3pP3/P2P1Nq1/1PPQBN2/R5K1 w - - 1 21 | Kf1 | Is the g-file open, semi-open, or closed? | semi-open for White | files |
r2qr2Q/2pk1p2/p1nbbPp1/1p1p2N1/3P4/2PB4/PP1B2PP/R4RK1 w - - 1 19 | e7d7 | What is the material balance in this position? | White is up 1 pawn of material | material |
2rrn1k1/p1q1bpp1/4p1bp/1Pp1P3/2N5/PQn2NP1/5P1P/2R1RBK1 w - - 0 25 | Qxc3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
6k1/ppp4p/3p2p1/4p3/2P2r2/1PP2K2/P5PP/1R6 w - - 6 24 | e4f4 | Is the White king in check? | Yes | check |
5k2/3b4/1p1p2p1/3Pn2p/2P2b1P/5PR1/3qBP2/4NK1Q b - - 0 37 | Bf5 | Is the move from d2 to d2 legal? | No | legality |
5rk1/1q1brpnp/p1n3pB/1p2p3/2p1P2Q/2P2N1P/PPB2PP1/2R1R1K1 w - - 4 24 | Be3 | Is the White king in check? | No | check |
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