fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
4r3/8/3R4/6k1/3KP3/8/8/8 b - - 7 4 | Ra8 | What is the material balance in this position? | White is up 1 pawn of material | material |
2kr1bnr/pppq1pp1/2n5/4P2p/2Pp2b1/5NP1/PP1NPPBP/R1BQ1RK1 w - - 0 9 | b4 | Is the move from d1 to a4 legal? | Yes | legality |
5rk1/1BB2pp1/4bq1p/3p1n2/1Q6/2P4P/5PP1/3R2K1 b - - 14 36 | Qg5 | What is the material balance in this position? | Equal | material |
3n4/pp6/2p1k3/8/4pN2/2P5/PP6/2K5 b - - 5 31 | g6f4 | Is the Black king in check? | Yes | check |
2r3k1/5pbp/r4np1/1b1Pp3/pp2P3/P1P1BPPP/4N1B1/4RRK1 b - - 0 24 | b3 | Does Black have any passed pawns? | No | structure |
r2qkbr1/1p1bpp2/p1np1n1p/8/3PP1p1/Pp3N1P/2PN1PP1/R1BQRBK1 w q - 0 13 | hxg4 | Does White have any isolated pawns? | Yes: a3 | structure |
2b4r/4r1kp/3R2pq/3Qpp2/2p3P1/2P5/1P2BP1P/3R2K1 w - - 3 33 | Rd8 | Is the Black king in check? | No | check |
r3k2r/pp2qppp/2p5/2bpP2b/8/6PP/PP1BPPB1/2RQ1RK1 w kq - 3 14 | Kh2 | Identify any Black knight outposts on the board. | None | outposts |
r1bkr3/ppp1np1p/3p1N2/4n3/2B2QPq/3P4/PPP5/4RRK1 w - - 2 20 | Rxe5 | What piece is on e5? | Black Knight | occupancy |
r3k2r/pp1b1p1p/4p3/4P1b1/4B1p1/PnNN4/1P3PPP/R2R2K1 w kq - 9 22 | Rab1 | Is the move from a1 to c1 legal? | Yes | legality |
r4k2/ppp2P1p/6p1/8/3Q4/P3P1K1/1B3PPP/n6q b - - 0 25 | Kxf7 | What is the material balance in this position? | Black is up 4 pawns of material | material |
4r1k1/1p3qp1/p1n4p/4pp2/P4P2/1PB1Q2P/2P1R1P1/2K5 b - - 1 27 | e4 | What is the material balance in this position? | Equal | material |
r2qr1k1/pp1n1pp1/5b1p/3P4/6b1/2N2N2/PPQ1BPPP/R4RK1 w - - 6 14 | b8d7 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3k2r/pp2pp1p/3p2p1/2p5/4PP2/6PP/bB2N1B1/5KNR b kq - 0 18 | Rg8 | Is the move from g6 to g5 legal? | Yes | legality |
5rk1/pp1q2p1/2n1pr1p/3p4/5P2/PN3R2/1PP3PP/4QR1K b - - 1 23 | Qc7 | Is the move from d5 to g3 legal? | No | legality |
1Rb1kbnr/8/8/1P2qP1P/1p1p1p1p/8/4N3/1NBQKB1R b Kk - 2 15 | Qxb8 | Identify any Black knight outposts on the board. | a3, c3, e3, g3 | outposts |
rk1q1r2/pb4p1/n4bB1/2p5/3pPP2/1Q4P1/PP1B3P/2RR2K1 b - - 6 23 | Qb6 | Does White have any isolated pawns? | No | structure |
4r2k/5qb1/1p3n1p/pPpP3r/P3pB1N/6PP/3Q1P2/4RRK1 b - - 0 37 | g2g3 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/1q3pk1/1p4pn/1Q6/3Pp2P/4P2P/P4P2/5BK1 w - - 3 39 | h5 | Identify any White knight outposts on the board. | None | outposts |
r7/1pPk1pbp/2n1b1p1/4p3/1P2P3/5N2/3P1PPP/BN2R1K1 w - - 1 19 | Bc3 | Is the move from e1 to d8 legal? | No | legality |
r1bqk2r/pp1npp1p/2np2p1/8/2P1P3/1NP1B3/P3BPPP/R2QK2R b KQkq - 0 10 | b6 | Does White have any passed pawns? | No | structure |
1n3rk1/3r1ppp/1q2p3/1pRp4/1P6/3Q1BP1/P3PP1P/3R2K1 b - - 3 21 | Rb7 | Is the move from f8 to h2 legal? | No | legality |
2r5/p3n1k1/1p2Pr1p/3p2p1/6PP/5B2/PQ3P2/6K1 w - - 0 28 | Bg2 | Does White have any passed pawns? | Yes: e6 | structure |
2kr1b1r/pppb2pp/5q2/3p1p2/3Pn3/2PB4/PP1N1PPP/R1BQ1RK1 w - - 1 10 | f3 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/5ppp/p3pn2/1p6/3P4/2PB1P2/P4P1P/2R1R1K1 b - - 0 21 | Rfd8 | What is the material balance in this position? | Equal | material |
r1bq1rk1/1p2ppbp/p2p2p1/3N1n2/2PP4/1P4P1/PB3PBP/R2Q1RK1 w - - 0 14 | Qd3 | Identify any White knight outposts on the board. | None | outposts |
rnb1kb1r/p1p2ppp/1p2pq2/8/2PP4/2P5/P3BPPP/R1BQK1NR b KQkq - 1 8 | Bb7 | Is the move from f6 to e1 legal? | No | legality |
7q/8/1k1bQ2P/1p6/p7/P1P5/KP4P1/8 w - - 0 44 | Qxd6+ | Is the d-file open, semi-open, or closed? | open | files |
r3kb1r/1b2q1pp/p1npN3/3Bn1P1/4P3/2p1B3/PPP4P/R2Q1RK1 w - - 8 17 | Bb6 | Is the f-file open, semi-open, or closed? | open | files |
r3r1k1/1p2qpp1/2pp3p/4p3/p1PnPP1P/3P2P1/PP4BK/R2Q1R2 b - - 0 19 | Reb8 | Identify any White knight outposts on the board. | None | outposts |
r1b3k1/ppq3p1/4p2p/2QR4/5rn1/PNN5/1PP3PP/5R1K w - - 0 23 | Nd2 | Are there any open files in this position? | Yes: d, f | files |
8/7p/2k2Kp1/8/2P2P2/6PP/3n4/6B1 b - - 2 42 | e5f6 | What is the material balance in this position? | White is up 2 pawns of material | material |
2bq1rk1/1pp1nppp/r7/p1bPQ3/B7/2PP4/PP3PPP/RNB2RK1 b - - 0 11 | Rg6 | Is the e-file open, semi-open, or closed? | open | files |
r2q1rk1/pb3ppp/1pn1pn2/6B1/2BP4/P1b2N2/1P3PPP/R2QR1K1 w - - 0 13 | bxc3 | Identify any Black knight outposts on the board. | d5 | outposts |
2b2r2/krnnq3/1p1pBpp1/p1pPp2p/P1P1P2P/NRP1BPP1/KQ6/1R6 b - - 23 37 | Na8 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
R3b3/4k3/3p2p1/2pPp1P1/4P1KP/1P6/8/4b3 b - - 3 2 | Bd7+ | What piece is on d5? | White Pawn | occupancy |
6k1/5p1p/4b3/8/4P1P1/3B1p1P/Pp5K/8 w - - 0 40 | Bb1 | What is the material balance in this position? | Equal | material |
r1q1k1nr/pppbppbp/2np2p1/8/2PP4/5NP1/PP2PPBP/RNBQR1K1 b kq - 0 7 | Bh3 | What piece is on h8? | Black Rook | occupancy |
r1bq1rk1/ppppnpbp/2n3p1/8/4P3/2N1Q3/PPPB1PPP/2KR1BNR w - - 6 8 | Bc4 | Identify any Black knight outposts on the board. | None | outposts |
r3k2r/ppp1q1pp/3p1n2/5b2/2Bb4/2N2Q2/PPPP1PPP/R1B2K1R b kq - 1 11 | Be6 | What piece is on d3? | Empty | occupancy |
r3q1rk/5pp1/p2R1b1p/Pb1Bp3/4P3/2P2N1P/2Q2PP1/4R1K1 b - - 2 26 | c4d5 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bqk2r/pppp1ppp/2n2n2/4p3/1b2P3/2N2N2/PPPP1PPP/R1BQKBR1 w Qkq - 6 5 | d4 | Does Black have any isolated pawns? | No | structure |
2r3k1/p4pp1/1p5p/r1N5/P6P/2P3P1/5P2/R2R2K1 b - - 0 26 | Rcxc5 | Does White have any passed pawns? | No | structure |
8/7R/p4kp1/1p1N1p2/1r6/6PP/5P2/6K1 b - - 1 41 | c7d5 | Is the Black king in check? | Yes | check |
8/6pk/6q1/4b2p/2Q4P/p3B1P1/2p2P2/5K2 w - - 2 64 | g4 | Does White have any isolated pawns? | No | structure |
3q1rk1/1b2bp1p/p1Np2p1/1prPn1P1/7P/P7/1PP2QB1/2BR1RK1 b - - 2 22 | Nxc6 | Is the move from e7 to f6 legal? | Yes | legality |
1r4k1/3nqpp1/1p2pn1p/pN6/P1PR1P2/4P1P1/3Q2BP/6K1 w - - 1 29 | Na7 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
6k1/P5p1/1Qp2pb1/1p2p3/4P1P1/4NP2/3q2K1/8 w - - 3 50 | Kg1 | Is the Black king in check? | No | check |
r2q1rk1/1b2bppp/p1n1p3/1p6/1P2B3/P3PN2/1B3PPP/R2Q1RK1 b - - 0 14 | f5 | What is the material balance in this position? | Equal | material |
8/P1k5/2b4p/2K3pP/6P1/3B4/8/8 b - - 0 7 | Bg2 | Does White have any passed pawns? | Yes: a7 | structure |
r2r2k1/1p3p1p/6pB/p2R4/2B1p1P1/8/P1P2P1P/1q4K1 w - - 5 28 | b6b1 | Is the White king in check? | Yes | check |
5k2/8/7p/1p2p1p1/1K6/P7/8/5r2 b - - 1 49 | b3b4 | Identify any White knight outposts on the board. | b4 | outposts |
r1q3rk/2p3Np/p2p1Qn1/np1Pp1p1/4P1b1/2P3PP/PPB2PK1/R1B1R3 b - - 0 23 | Rf8 | Is the move from g8 to g7 legal? | Yes | legality |
2br2k1/p1q4p/3r2p1/3PQp2/5P2/2P5/6BP/R4R1K b - - 0 26 | Qc5 | Identify any White knight outposts on the board. | c6, d4, e6 | outposts |
r1b1k2r/pp3ppp/1qn1p3/3p2B1/3Pn3/P1bQ1N2/1P3PPP/1R2KB1R w Kkq - 0 11 | b4c3 | Is the White king in check? | Yes | check |
r5k1/2p3p1/3p3p/2pn4/Pp2R3/5P2/6PP/R5K1 b - - 0 30 | Nc3 | Is the move from c7 to c6 legal? | Yes | legality |
r3n1k1/3r1pbp/pB2p1p1/8/P1P1P3/1P1N1P2/5NPP/1n3RK1 w - - 0 26 | Rxb1 | Does Black have any isolated pawns? | Yes: a6 | structure |
r4rk1/p5pp/2pq1n2/8/3PpB2/8/PPP1Q1PP/R4RK1 b - - 0 16 | Qxd4+ | Does White have any isolated pawns? | No | structure |
2r3k1/1p3pp1/8/p4q2/PnPPp2p/7P/1KPQ1PP1/2R4R b - - 0 27 | Rxc4 | Identify any White knight outposts on the board. | d5 | outposts |
r1bq2k1/pp3rb1/2npp1Qp/2p5/2B1p3/2NP4/PPP3PP/R1B2RK1 b - - 0 14 | Ne5 | Identify any White knight outposts on the board. | None | outposts |
6k1/1q3rp1/1p5p/1Pp2b2/7b/1Q2P1B1/P4nPP/R4RK1 b - - 3 29 | Qxg2+ | Is the move from g8 to b4 legal? | No | legality |
rnbqkb1r/pp2ppp1/2p2B2/8/3P4/6p1/PPP2PPP/R2QKBNR w KQkq - 0 8 | Be5 | Are there any open files in this position? | No | files |
r4r1k/3b3p/2Np3b/1p1P1p2/p1p1pN1q/P1P4P/1P2QPP1/1B1RR2K b - - 0 37 | Bxf4 | Identify any White knight outposts on the board. | None | outposts |
r4k1r/ppp2ppp/8/1P1p1b2/3P2P1/N1PKP2P/P4n2/R5NR w - - 0 18 | e4f2 | Is the White king in check? | Yes | check |
5r2/1P6/3Q2k1/p2Pp1p1/4Pp1p/5P2/2K2BP1/1R6 b - - 0 39 | c7d6 | Is the White king in check? | No | check |
8/8/N7/1p6/1PkP4/P3K3/8/7b w - - 7 62 | Nc5 | What piece is on g8? | Empty | occupancy |
6k1/pp2B1pp/P1p3q1/3pP3/8/2Q4b/1PPN1rPP/6K1 w - - 0 22 | Qxh3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
2r2rk1/pp1bqppp/8/4p1NQ/1n2P3/6P1/PP3PBP/R2R2K1 b - - 0 18 | h6 | What piece is on c7? | Empty | occupancy |
r2q1rk1/ppb3pp/2p1pn2/2P2p1b/2NPp3/1P4P1/PB2PPBP/R2QR1K1 w - - 3 15 | f3 | Are there any open files in this position? | No | files |
r4r1k/ppp3bp/2n5/3Q4/3P2pP/2Pq2B1/PP1N3R/5RK1 w - - 1 22 | Rg2 | What piece is on g3? | White Bishop | occupancy |
4rk2/p5p1/3b4/8/3q4/3Bp2P/PP2Q1P1/5RKR b - - 4 36 | d1f1 | Is the White king in check? | No | check |
r2q1r2/1p1n1pQ1/p2p4/2b1pPk1/8/2P2b2/PPB2PPP/R4RK1 b - - 15 26 | Kh5 | Is the Black king in check? | Yes | check |
r4rk1/ppp2ppp/2n2q2/2b1p2b/8/2PP1NPP/P1P2PB1/R1BQR1K1 w - - 1 12 | g4 | Identify any White knight outposts on the board. | None | outposts |
2k1r3/1pqb1pr1/p3p3/8/4P3/2N1BB2/PPPN1P2/2KR3R w - - 2 26 | Rh5 | Identify any Black knight outposts on the board. | None | outposts |
1Q6/3RR3/8/7p/5p2/2kp4/5PKP/8 b - - 0 48 | b7b8q | What is the material balance in this position? | White is up 18 pawns of material | material |
1rbqk2r/1p1nppbp/p4np1/3P4/Q7/1BN2N2/PP1P1PPP/R1B1K2R w KQk - 4 10 | Qf4 | Identify any White knight outposts on the board. | None | outposts |
2r5/5kPp/1n3N1B/4n3/p7/P2R3P/8/4K3 w - - 2 45 | Rc3 | What piece is on a4? | Black Pawn | occupancy |
4r1rk/1p1N1Rp1/p6p/2b5/2P1P1P1/1P1p3P/8/3R2K1 w - - 2 35 | d6c5 | Is the White king in check? | Yes | check |
2r3k1/pQ3ppp/3p4/3P2q1/8/1P6/P1r2PPP/3RR1K1 w - - 3 23 | c1c2 | Identify any White knight outposts on the board. | a4 | outposts |
rnb2rk1/1pq2ppp/4pn2/2P1N3/1pPp4/6P1/PP2PPBP/RNQ1K2R w KQ - 2 11 | Qf4 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/6R1/8/7p/8/5p1k/1r6/6K1 w - - 0 75 | Rg8 | Is the Black king in check? | No | check |
6k1/1P4p1/7p/8/1R2p1p1/3p3P/3Rnr1K/8 w - - 0 44 | Kh1 | Is the move from h2 to h1 legal? | Yes | legality |
3r4/4k2p/1pnr1pp1/p1pn4/8/6P1/PP2PPBP/R1R1BK2 w - - 0 20 | Rab1 | What piece is on g8? | Empty | occupancy |
r1b1rbk1/1pqn1p1p/p2p1np1/2pP4/P1N5/2N1PP1P/1P2B1PB/R1Q1K2R w KQ - 1 17 | e4 | Is the move from c1 to h6 legal? | No | legality |
r2qrnk1/pp3ppp/2pbbn2/3pN3/3P1B2/2NBP2P/PPQ2PP1/R4RK1 b - - 4 13 | Rc8 | Is the move from f7 to g8 legal? | No | legality |
4r1k1/p4p2/1p4p1/2p1P1Rp/7P/5P2/PP1r1RKQ/3q4 w - - 8 29 | d4d2 | Identify any Black knight outposts on the board. | d4, h5 | outposts |
6k1/3b1pbp/r2p1np1/Np1Pp3/r3P3/6PP/PR1B1PB1/3R2K1 w - - 1 23 | Nc6 | Is the move from d1 to a1 legal? | Yes | legality |
rn2k1n1/pp1b1pp1/2p1p3/3p4/3P4/1PP5/P3P3/RNBQK1qB w Qq - 0 14 | g5g1 | Is the White king in check? | Yes | check |
rnb1k2r/pppn1ppp/4p3/3pP1q1/3P4/2N4N/PPP2PP1/R2QKB1R b KQkq - 1 8 | Qh4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1r5k/7p/3n4/p2P4/P1p1pr2/2N5/1P5P/2R1R2K w - - 1 38 | Re2 | Identify any White knight outposts on the board. | c6, e6 | outposts |
r2q1rk1/pp1n1pp1/4bn1p/3p4/3b3B/2NBP3/PPQ2PPP/R3K2R w KQ - 0 13 | exd4 | Does Black have any isolated pawns? | Yes: d5 | structure |
rn1qk2r/p3nppp/1p2p3/1bppP3/P2P4/2P2N2/2P2PPP/R1BQK2R w KQkq - 0 10 | axb5 | Does White have any isolated pawns? | Yes: a4 | structure |
5k2/pp4p1/2b3B1/4B3/5P2/1P5P/P1P3PK/3r4 b - - 0 31 | Rd2 | Does Black have any isolated pawns? | Yes: g7 | structure |
rnb2rk1/3pppb1/p4npp/qPpP4/7B/2N2N2/PP1QPPPP/R3KB1R w KQ - 0 10 | d6 | Identify any Black knight outposts on the board. | None | outposts |
rn1qk1nr/p3bppp/2p3b1/1p6/3pNB2/1B3N2/PPP1QPPP/R3K2R b KQkq - 3 10 | Bb4+ | Identify any White knight outposts on the board. | None | outposts |
8/5pk1/7p/3p2p1/2nPp1P1/4P2P/K1N5/8 w - - 1 43 | b6c4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r2qk2r/pbp2pp1/1pn1p3/4P3/1b1p1P2/1P1P1NPB/1PPBQ2R/R3K3 b Qkq - 3 15 | Bxd2+ | Is the move from g7 to g6 legal? | Yes | legality |
2r5/1b1nkp1p/4p3/1Bq5/P2p1pQN/8/1P3PPP/R5K1 b - - 3 25 | Qe5 | Identify any Black knight outposts on the board. | d5 | outposts |
rnbq1rk1/ppp1ppbp/3p1np1/8/3PP3/2N1B3/PPPQ1PPP/R3KBNR w KQ - 4 6 | O-O-O | Is the move from g1 to a4 legal? | No | legality |
8/1N6/p1n1P3/P7/1PK2p2/4k3/8/8 b - - 0 46 | f3 | What piece is on b4? | White Pawn | occupancy |
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