fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
5rk1/4p2R/3p2p1/q2P4/1p1Q4/4KP2/1Pr3P1/3R4 b - - 0 25 | e5 | Identify any Black knight outposts on the board. | None | outposts |
2r3k1/5p2/1q4p1/p7/Pr6/2pB1P1P/2Q4P/2RN1K2 b - - 0 37 | Qf6 | What piece is on e6? | Empty | occupancy |
2kr3r/1p6/p1n1p3/3nB3/3q1PP1/3B1QKP/8/1RR5 b - - 0 38 | Qa4 | What piece is on c7? | Empty | occupancy |
1k1r4/1pp3q1/p7/4pR2/P3P3/2P1Q1Pn/1P6/7K b - - 3 34 | Rh8 | Is the move from g7 to g5 legal? | Yes | legality |
r3r1k1/1b1n1pbp/1q2p1p1/2p1P3/p1Pp1PN1/1P5R/PBB1Q1PP/3R2K1 w - - 0 22 | Nf2 | Are there any open files in this position? | No | files |
rnbqk2r/ppp1ppbp/6p1/3pP3/3Pn1P1/2N5/PPP1BP1P/R1BQK1NR w KQkq - 1 7 | f4 | Is the h-file open, semi-open, or closed? | closed | files |
r1b2Q2/ppp3p1/4p1Bb/8/P1k5/8/1q4PP/3R3K b - - 1 24 | Bd2 | Does White have any isolated pawns? | Yes: a4 | structure |
3Q2rk/2n4p/p3p3/1pP1Pp2/8/2P5/PP5P/5K2 w - - 1 30 | Qxc7 | Are there any open files in this position? | Yes: d, g | files |
4knr1/R3bp2/8/1P2P1p1/1ppr2Bp/3p3P/1P3PPB/3R2K1 b - - 0 30 | Ne6 | What piece is on h7? | Empty | occupancy |
2bqk1nr/1p1p1pbp/6p1/1p2p3/1p2P3/5N2/2PP1PPP/BN1QR1K1 w k - 0 11 | Bxe5 | What piece is on g2? | White Pawn | occupancy |
5bk1/5pp1/7p/1Qp5/5B2/1P4P1/5PKP/3q4 b - - 6 30 | Qd5+ | Does White have any isolated pawns? | Yes: b3 | structure |
8/2n3k1/1p3p2/2P1pP2/P1K1N1P1/8/7P/8 w - - 0 45 | cxb6 | Is the Black king in check? | No | check |
r7/1p2bbk1/2p1npp1/2n1p3/p1P1P1P1/P1N1BP2/1P2B1K1/3R3N b - - 7 29 | Be8 | What piece is on h5? | Empty | occupancy |
1q3rk1/p1p2pbp/b2p2p1/3n4/4P3/PP3N2/1PQ2PPP/2KR3R w - - 0 19 | exd5 | What piece is on h4? | Empty | occupancy |
1r1kr3/2p2q2/p2p4/Qp1n4/6P1/3R1P2/PP6/K1R5 b - - 5 42 | Rb6 | Is the move from b8 to b6 legal? | Yes | legality |
r1b1r1k1/1p1nbpnp/2p3p1/q2pN3/p2P2P1/2NBP1BP/PPQ2P2/1K1R3R w - - 4 18 | f3 | Does Black have any isolated pawns? | No | structure |
2r2r2/pb1Rbpkn/1p2p3/2p5/2P2B2/5P2/PP5P/1K3Q2 b - - 1 24 | Bf6 | Identify any Black knight outposts on the board. | f5 | outposts |
r1bqk2r/ppppbp1p/1nn3p1/4P3/8/2P2NQ1/P3BPPP/RNB2RK1 w kq - 2 13 | Bh6 | Does Black have any passed pawns? | No | structure |
r3r1k1/pb1n1p1p/1p1q1np1/2pp4/3P4/1P1BPNN1/PQ3PPP/2RR2K1 b - - 1 19 | Rac8 | Is the White king in check? | No | check |
5qk1/pp3p1R/6p1/4p1N1/1P2P1P1/PK5R/5r2/8 b - - 3 32 | Qd6 | Identify any White knight outposts on the board. | None | outposts |
r2r4/1p2q1bk/p1bNpppp/2P1Pn2/5P2/1BP1B2P/P2R1QP1/R5K1 w - - 0 26 | Nxf5 | Are there any open files in this position? | Yes: d | files |
r1bq1rk1/pp2ppbp/1n4p1/2BP4/2n1P3/2N5/PP2BPPP/R2QK1NR w KQ - 1 12 | Bxc4 | What is the material balance in this position? | White is up 1 pawn of material | material |
3r3r/p2q1k2/2p2b2/2p3pp/2NnQp1P/1P6/PB1P2P1/4RRK1 w - - 0 25 | hxg5 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
8/8/4p3/4p3/2q1k1p1/2P5/1P4PP/Q2K4 b - - 0 55 | Qf1+ | What is the material balance in this position? | White is up 1 pawn of material | material |
2b2r1k/4Npbp/3p2p1/3B4/4Pp2/2q2P2/1r2Q1PP/3R1RK1 w - - 4 27 | Qc4 | Identify any Black knight outposts on the board. | c5 | outposts |
8/8/4kp1p/1P2p1pP/4P1K1/5PP1/5b2/5B2 w - - 7 54 | Be2 | Does Black have any passed pawns? | No | structure |
r4rk1/pbnq2p1/1p1ppb1p/8/3P3P/P4N1R/1P1BQPP1/1BR1K3 b - - 3 18 | Nd5 | Identify any White knight outposts on the board. | None | outposts |
r1r4k/pb1n1Qpp/2qn1p2/2p1p3/1P6/4PN2/1B3PPP/R2R1BK1 w - - 4 21 | Qe7 | Are there any open files in this position? | Yes: d | files |
r1b2k2/p4p2/2B4p/6p1/1P2P3/P7/5PPP/RNB2RK1 b - - 0 18 | b5c6 | Identify any White knight outposts on the board. | a5, c5, d5 | outposts |
2r3k1/5pb1/3p2p1/7p/7P/P4P2/2BQ1KP1/7r b - - 0 34 | Rxh4 | What piece is on g8? | Black King | occupancy |
r3k2r/pp1n2bp/2p1p1p1/1q6/3P4/1QP2N1P/PP3PP1/R1B3K1 w kq - 0 15 | Qxe6+ | What piece is on g7? | Black Bishop | occupancy |
r4k1r/1p1n1pp1/1qp4p/p4N1P/1P1Pn3/2PQ4/P4PP1/R3R1K1 b - - 0 20 | Nef6 | Identify any Black knight outposts on the board. | None | outposts |
3r4/2r1qpk1/pn5p/1ppBp1pP/2P1P3/1P1RQ3/P4PP1/3R2K1 b - - 2 29 | Nd7 | What piece is on a3? | Empty | occupancy |
1r4k1/p4ppp/2b5/3q4/3Pr2P/1PB5/5PPR/1R1Q1K2 w - - 5 26 | g3 | Identify any White knight outposts on the board. | a4, c4, c5 | outposts |
7k/p2bNr1p/1p1P1Pp1/2p5/2P2Q2/P1P2R2/6PK/3q4 w - - 7 42 | Rh3 | Is the move from c4 to f4 legal? | No | legality |
r4rk1/pp1q3p/3p2p1/3Np3/2Pn4/BP6/P2QbPPP/2R1R2K b - - 12 23 | Rxf2 | Is the move from e2 to d1 legal? | Yes | legality |
r3nrk1/p1qb2p1/4p2Q/3pPp2/1R6/6R1/P2N1PPP/5BK1 w - - 5 22 | Nf3 | What is the material balance in this position? | Equal | material |
1r6/p1p3k1/1p3qp1/8/3b4/3P4/PPPB2Pr/R6K w - - 0 24 | h8h2 | Is the Black king in check? | No | check |
r5k1/2p2ppp/8/1B2p1q1/5n2/2QPNb2/5PPP/R5K1 b - - 2 23 | Ne2+ | Is the e-file open, semi-open, or closed? | semi-open for White | files |
2kr3r/pb1nq1bp/1pp2Pp1/3p4/3P4/P2B2B1/1PN2PPP/R2Q1RK1 b - - 0 18 | e5f6 | What is the material balance in this position? | White is up 1 pawn of material | material |
4r1r1/2p1bk2/p1b1pp2/5p1p/7P/2P2NN1/PP3PP1/3RR1K1 w - - 0 23 | Nd4 | What piece is on h4? | White Pawn | occupancy |
rnb1kb1r/pp2pppp/2p2n2/q7/1P6/5N2/P1PPBPPP/RNBQ1RK1 b kq - 0 6 | Qxb4 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
3r1n2/p4k2/1p4p1/2p4p/P1P2P1N/2P3P1/2K1R2P/8 w - - 2 30 | Nf3 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
7r/7P/2R5/8/3k4/1P6/P3K3/7R b - - 2 40 | a6c6 | What is the material balance in this position? | White is up 8 pawns of material | material |
3rrn2/1pp2k1p/p4pp1/2p1p2N/4PP2/3PP3/PPP4P/2K2RR1 w - - 0 20 | fxe5 | Does Black have any passed pawns? | No | structure |
q7/4Npbk/1p1p2p1/1NrPp2p/Pp5P/5P2/P2Q2P1/K2R3R b - - 0 23 | Qxa4 | Is the White king in check? | No | check |
q1r3k1/4b1p1/2p1p2p/r2pP3/Pp6/4P2P/2Q1NPP1/1R1R2K1 b - - 1 24 | c5 | Identify any Black knight outposts on the board. | a3, c3, c4 | outposts |
2rq1rk1/pp3pbp/2np4/8/3p1B1P/2PN4/P1P3P1/R2Q1RK1 w - - 0 15 | Qg4 | Is the Black king in check? | No | check |
1r2k3/pp3p1p/2p3p1/8/b4PP1/P2R1B1P/5K2/8 w - - 5 28 | b3a4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/p7/5kp1/p1R2p1p/3Pr2P/3KP1P1/8/8 w - - 2 58 | Ke2 | What piece is on c8? | Empty | occupancy |
2kr3r/ppp2ppp/q4n2/3Pp3/2P5/2B5/PP2QPPP/R4RK1 b - - 0 15 | Rxd5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
6r1/pk5p/5n1P/4N1pn/1p1P4/2PB2P1/1P1K4/5R2 w - - 1 48 | Rf5 | What piece is on g1? | Empty | occupancy |
r2q1rk1/pp4b1/2ppPn1p/4pnp1/1PP5/2N1BB2/P4PPP/R2QR1K1 w - - 0 17 | b5 | Is the White king in check? | No | check |
r5k1/np3ppp/p1p1q3/4p3/8/1P2P2P/PB2QPP1/3R2K1 w - - 2 5 | Qg4 | Are there any open files in this position? | Yes: d | files |
rnbq1rk1/pp2nppp/4p3/2ppP3/3P2Q1/P1P5/2P2PPP/R1B1KBNR w KQ - 3 8 | Bd3 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r2q2k1/pp2n3/2ppPppQ/8/2B4p/4R3/PP3P1P/6K1 b - - 3 23 | Qa5 | What piece is on e6? | White Pawn | occupancy |
1r2rbk1/1q3ppp/p2p1nn1/N3p3/P3P3/1P1Q1N1P/3B1PP1/R3R1K1 b - - 2 24 | Qa8 | Is the move from b7 to b5 legal? | Yes | legality |
2kr3r/1pq2p2/p3pnP1/3p4/2nP1b1B/P1N2B2/1PP1QPK1/1R5R b - - 0 29 | Rhg8 | Is the h-file open, semi-open, or closed? | open | files |
2r2br1/p2R3p/4kp1p/7Q/P3P3/8/5PPP/3R2K1 w - - 3 29 | e7e6 | What is the material balance in this position? | White is up 7 pawns of material | material |
2q3k1/6p1/3Bnp1p/P5rP/1p2P1P1/8/2n2K2/3RRQ2 b - - 3 63 | Rxg4 | Is the move from c8 to c7 legal? | Yes | legality |
rnbqkbnr/1p1ppppp/p7/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 0 3 | d4 | Are there any open files in this position? | No | files |
2k5/7R/1B2p3/1Pp4p/2P3r1/PK6/8/6b1 w - - 6 45 | a4 | Identify any White knight outposts on the board. | a6, c6 | outposts |
8/p7/1pn1rkp1/1K3p1p/P2P3P/4PBP1/8/1R6 b - - 4 44 | Na5 | Is the move from e6 to e8 legal? | Yes | legality |
2br4/R7/7p/3B3k/2P5/P2PPP2/1r2K3/6R1 w - - 1 30 | b3b2 | Is the Black king in check? | No | check |
r2q1rk1/1p1bb1pp/1nn1p3/p1ppPpNQ/3P1P1P/PPPB2NR/6P1/R1B1K3 b Q - 3 16 | h6 | Is the e-file open, semi-open, or closed? | closed | files |
6k1/1p2p2p/2n1p1p1/p2rPr2/3qQB1P/6P1/5P2/1R2R1K1 w - - 0 26 | Rxb7 | Identify any Black knight outposts on the board. | b4 | outposts |
8/1p3Np1/3PBpkp/p3p3/4P1P1/8/3r1P1P/6K1 w - - 0 33 | Bd5 | Identify any Black knight outposts on the board. | b4 | outposts |
2r5/4k1p1/4P2p/p1rp4/P3n3/3B3P/1R3P2/4R1K1 b - - 6 48 | Nc3 | Is the move from e7 to f6 legal? | Yes | legality |
2r2r1k/pp1qb1pn/2p1p2p/2Pp1p1P/1P1P2P1/PN2PP2/1B2Q3/2R2RK1 b - - 1 23 | Rg8 | What is the material balance in this position? | Equal | material |
r1b1k1nr/pppp1ppp/5q2/4p3/3NP2b/2NP2P1/PPP2K1P/R1BQ1B1R w kq - 1 9 | d8f6 | Is the White king in check? | Yes | check |
4r3/k1pR4/2PB2p1/b6p/8/6P1/5P1P/5K2 b - - 2 36 | Kb6 | What is the material balance in this position? | White is up 1 pawn of material | material |
3n4/2rB1PK1/2P5/1P6/3k4/8/8/8 b - - 0 8 | Kc5 | Does White have any passed pawns? | Yes: b5, c6, f7 | structure |
rnb1k1nr/ppp2ppp/3p4/4q3/3pPN2/3B1Q2/PPP2PPP/RN2K2R w KQkq - 2 8 | f6e5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
5k2/1QN2p1p/6p1/4n1q1/p2r4/1P5P/2P2PP1/5RK1 w - - 0 37 | f4 | Are there any open files in this position? | Yes: d, e | files |
3r1bk1/2R1pr1p/pp3pp1/3Pnq2/4N2P/1Q3PB1/PP3PK1/4R3 b - - 0 26 | Kg7 | What piece is on d5? | White Pawn | occupancy |
8/8/6b1/6p1/p1p3P1/P1P1Bpb1/kP3N2/2K5 b - - 7 79 | Bd6 | What is the material balance in this position? | Equal | material |
bq3r2/4nppk/8/1p1pP1N1/2pP4/8/1P3PPP/3Q1RK1 b - - 1 20 | Kg6 | Identify any White knight outposts on the board. | d6 | outposts |
r1b2rk1/1pp2nbp/4pqp1/p2p4/2PP4/P4NPB/1P1BQP1P/1R1R2K1 b - - 1 17 | dxc4 | Identify any Black knight outposts on the board. | None | outposts |
8/3q1p1k/4pQp1/4P2p/3P3P/4B2K/8/8 b - - 34 84 | Qa7 | What is the material balance in this position? | White is up 2 pawns of material | material |
3r2k1/1p4rp/pqp1p1pQ/4Pp1P/3P4/3R2R1/1P3PP1/6K1 b - - 0 35 | Kf7 | Does Black have any isolated pawns? | No | structure |
r1b5/pp1k3Q/2p1p3/q2pPnB1/3b4/2NB4/PPP2rPP/R3K2R b - - 2 18 | g6h7 | Is the White king in check? | No | check |
r1bqk2r/ppp1bpp1/2Bp1n1p/4p3/4P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 0 7 | d5c6 | Is the Black king in check? | Yes | check |
b1rq1bkr/4ppp1/pp2nn1p/2p1N2P/3p4/NP2P1Q1/P1PP1PP1/B1R2BKR b KQkq - 1 11 | Ng5 | Is the White king in check? | No | check |
r1b2rk1/1p2bppp/p1n5/2P1p3/6n1/N3BN2/PP2BPPP/2RR2K1 w - - 1 15 | Bd2 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
r1bq1rk1/pp3ppp/3b2n1/2pP4/2P5/2N2N1P/P4PP1/R1BQ1RK1 w - - 1 13 | Ne4 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
1qr2nk1/1b1nbppp/pp1pp3/5PP1/P1r1P3/1NN3Q1/1PP1R1BP/2BR2K1 b - - 0 22 | Ne5 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
8/5k2/4P3/5PP1/8/Pp1K4/1P6/8 b - - 0 66 | e5e6 | Is the Black king in check? | Yes | check |
8/8/R7/6kP/2n3P1/p7/r4PK1/8 w - - 5 60 | Kg3 | Does White have any isolated pawns? | No | structure |
r3kbnr/1pp3p1/p1p2p2/4p2p/4P3/3P1N1P/PPP2PP1/RN1R2K1 b kq - 1 11 | c5 | Identify any Black knight outposts on the board. | None | outposts |
8/6pk/p2qn2p/5p2/1PP5/4Q2P/P5B1/7K b - - 0 41 | Ng5 | Is the move from a6 to a5 legal? | Yes | legality |
r4r2/pb1p1pk1/1p3N1p/4P1p1/1p3P2/1P1B4/P1P3PP/R4RK1 b - - 0 21 | f2f4 | Identify any White knight outposts on the board. | d6, f6 | outposts |
r1br3k/p2qnQp1/1p2p3/2p3N1/7P/6N1/PPP2PP1/R5K1 b - - 0 19 | Nf5 | What piece is on f3? | Empty | occupancy |
1b6/8/1P6/3k4/6p1/5pPp/1N5P/7K w - - 0 7 | Kg1 | Does White have any isolated pawns? | Yes: b6 | structure |
2r1k2r/1b3ppp/3qp3/n3n1P1/4P2P/1P2BP2/P1P1B3/2KR3R w k - 0 20 | Rxd6 | What is the material balance in this position? | Black is up 9 pawns of material | material |
r1bq1rk1/1pp2pb1/3p1np1/p1nPp2p/2P1P3/2N1B1N1/PP2BPPP/R2Q1RK1 w - - 0 11 | f3 | Is the c-file open, semi-open, or closed? | closed | files |
r4rk1/pp1n2pp/2pN4/4p3/5b1q/3P1P2/PPP2P2/R2Q1RK1 w - - 1 17 | d8h4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
rn1qkb1r/pp2pppp/2p2n2/8/3P4/2N4P/PPP2QP1/R1B1KB1R b KQkq - 1 8 | e6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2q3k1/p1n5/1p4p1/2p1P2P/5r1P/1P3B2/P1P1Q3/3R2K1 b - - 2 29 | Kf8 | What is the material balance in this position? | White is up 2 pawns of material | material |
4b1r1/1p2P1r1/p7/4P3/1p6/4QkP1/P4P1P/5RK1 b - - 3 36 | b6e3 | Is the Black king in check? | Yes | check |
2r1k3/p1q1b3/1p3pN1/n2r3Q/8/P7/5PPP/5RK1 w - - 0 27 | Ne5+ | Is the White king in check? | No | check |
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