fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2r2rk1/1p5p/p3p1p1/3p4/1P1PnP2/P5P1/4B2P/R4RK1 b - - 0 24 | Rc3 | What is the material balance in this position? | Equal | material |
3r2k1/6pp/4p1b1/p3p3/3P1B2/1P6/P1r3PP/3RR1K1 w - - 0 25 | Bxe5 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
1k1r1b1r/pp3bpp/2p2p2/2N1n3/P7/4B1P1/1P2PPBP/R1R3K1 w - - 8 20 | b4 | Is the move from c1 to c3 legal? | Yes | legality |
5rk1/6p1/3b4/8/p6q/3ppp2/8/7K w - - 0 55 | g3h4 | Is the Black king in check? | No | check |
r4rk1/1bpR1pbp/1pq1p1pB/p3P3/P1P4Q/5N1P/2P2PP1/3R2K1 w - - 10 27 | Bxg7 | Is the move from c4 to c5 legal? | Yes | legality |
2q2k2/pb1nb2Q/1n2pr1p/8/1p1p4/5NN1/PP3PPP/1B2R1K1 w - - 2 23 | Bg6 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r2r1bk1/1pp2pp1/p1n1qn1p/4p3/PPN1P3/2P2N2/4QPPP/1RB1R1K1 b - - 2 18 | Nd7 | Is the d-file open, semi-open, or closed? | open | files |
2r5/5pkp/6p1/rp1p4/3P1P2/2P1R3/P4PKP/1R6 w - - 2 33 | Rb3 | Does Black have any isolated pawns? | Yes: b5, d5 | structure |
2r1k2r/1bqnbp2/p5pp/2n1p1P1/1p1NP2P/8/PPPNQ1B1/1K1RB1R1 w k - 0 24 | Bg3 | What piece is on e5? | Black Pawn | occupancy |
r1b1qrk1/ppp2pbp/n2p2p1/6B1/2PNP1n1/2N5/PP2BPPP/R2QR1K1 b - - 0 11 | Nxh2 | Does White have any isolated pawns? | No | structure |
rnbqkbnr/pp2pppp/8/1B1p4/8/8/PPPP1PPP/RNBQK1NR b KQkq - 1 4 | c4b5 | Is the Black king in check? | Yes | check |
r4rk1/5pp1/p7/1p2q1p1/8/1P6/P4PPP/R3R1K1 w - - 0 24 | Rxe5 | Is the move from g2 to g8 legal? | No | legality |
4k2r/1p3pp1/pb6/3pPp2/b2q1P2/2pN1Q2/2P3PP/R1R4K w k - 0 26 | Rab1 | Are there any open files in this position? | No | files |
1qk5/p1r2p2/6r1/R2BB3/1pp5/6P1/1P3P1P/5RK1 b - - 2 28 | Qb6 | Is the Black king in check? | No | check |
5r1r/ppqk2p1/4p2p/2pn4/1P2NP2/P1PP1BP1/7P/R1B2RK1 b - - 0 20 | cxb4 | Is the move from f8 to h5 legal? | No | legality |
rnbqkbnr/ppp1pp1p/6p1/8/2pP4/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 4 | g7g6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r3k2r/ppq1ppbp/2n3pn/3p1b2/3P4/2P1BN1P/PP2BPP1/RN1Q1RK1 b kq - 8 10 | Ng8 | Identify any Black knight outposts on the board. | None | outposts |
r1bq1rk1/ppp1bpp1/2n2n1p/4p3/2P5/2NPBNP1/PP3PBP/R2QR1K1 w - - 0 11 | a3 | Identify any Black knight outposts on the board. | None | outposts |
r6r/1b2BN1k/p4Q2/1p1q4/7p/1P6/1PP3PP/2K5 b - - 0 27 | Qh5 | Does Black have any isolated pawns? | Yes: h4 | structure |
1r6/r1pk1pp1/4p2p/2R5/Pn1P4/1P2PBP1/3NKP1P/8 w - - 22 36 | h4 | What piece is on g3? | White Pawn | occupancy |
1r1r4/2q1bPkp/p5p1/1p1bP3/5R2/P2B3Q/1PP3PP/5R1K w - - 2 24 | e6 | Are there any open files in this position? | Yes: d | files |
r1b2rk1/1pq1bppp/p1nppn2/8/2PNP3/2N1B3/PP2BPPP/R2Q1RK1 w - - 0 12 | Rc1 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
1Q1bk3/3p1p2/p6p/1p6/1P6/7b/1P2BP1r/R4RNK w - - 0 25 | g2h2 | Is the White king in check? | Yes | check |
r1bq1rk1/ppP2ppp/1b3n2/8/B2n4/2NN4/PPPP1PPP/R1BQ1RK1 b - - 0 11 | Qd6 | Are there any open files in this position? | Yes: e | files |
3r1rk1/p3b3/4n1pp/Rb2Pp2/3p1P2/5NN1/1P1B2PP/3R2K1 b - - 0 27 | a6 | What is the material balance in this position? | Equal | material |
r3k2r/pp3pbp/2p5/1B6/1B1n4/5P2/PP3P1P/2KR3R w - - 0 17 | Rhe1+ | Does Black have any isolated pawns? | Yes: f7, h7 | structure |
r2qr1k1/p5bp/2p1b1p1/3nppN1/2B5/4BP2/PPP3PP/1K1RQ2R b - - 1 16 | Bc8 | What piece is on a7? | Black Pawn | occupancy |
8/2k4p/2p3pP/3p1pP1/1p1P3K/r4Q2/5P2/8 b - - 2 3 | Rxf3 | What piece is on h8? | Empty | occupancy |
r4r1k/2q1bpp1/p2p1nbp/2p1p3/2PnP1B1/P1NPBPP1/1R3N1P/3Q1RK1 w - - 4 21 | f4 | Is the White king in check? | No | check |
2q3k1/2p3b1/r3b1pp/2B5/2p1B2P/4Q1P1/P3P3/5RK1 w - - 0 2 | Bxg6 | Does Black have any isolated pawns? | Yes: c4, c7 | structure |
r3k2r/p4ppp/8/1ppqPb2/2n1n3/PQB2N2/1P2PPPP/R3KB1R b KQkq - 1 16 | O-O-O | Identify any White knight outposts on the board. | d6 | outposts |
r1b3kr/npq1b2p/p2p1p2/7Q/2P5/6P1/PP3P1P/R1B1R1K1 w - - 2 17 | Bh6 | Is the move from a2 to a1 legal? | No | legality |
8/2k3p1/4p2p/2B5/8/P3P2P/1PB1qPP1/1K1R4 w - - 1 41 | e4 | What piece is on f1? | Empty | occupancy |
1rb1k2r/Qpqp3p/4p1p1/2p1p3/4P3/B1P5/P4PPP/3R1RK1 w k - 0 27 | Bxc5 | Does White have any passed pawns? | No | structure |
r1b2rk1/ppppqpp1/3b1n1p/4p3/4PP2/2NP3P/PPP1n1PN/R1BQ1RK1 w - - 0 10 | d4e2 | Is the White king in check? | Yes | check |
k4rr1/1p6/p1p5/3qBp2/3Pn3/3Q4/PPP1R1PP/1K1R4 b - - 0 27 | c5 | Does Black have any isolated pawns? | Yes: f5 | structure |
8/1R3pk1/6p1/5rP1/2B1K3/8/8/8 w - - 1 52 | Rxf7+ | Does White have any passed pawns? | No | structure |
r1bqkb1r/pppp1ppp/2n2n2/8/2BpP3/5N2/PPP2PPP/RNBQ1RK1 b kq - 1 5 | Nxe4 | Is the move from h8 to c7 legal? | No | legality |
r5k1/ppp3q1/7R/5N1Q/8/8/PPP2PPP/6K1 w - - 1 32 | Nxg7 | Does Black have any isolated pawns? | No | structure |
r3r1k1/pp1nbppb/1q3n1p/2p5/3PP3/2N3N1/PP1QBBPP/R3K2R w KQ - 0 16 | e5 | Identify any Black knight outposts on the board. | None | outposts |
5R2/pp1q2pk/6b1/3pB3/3P1QPr/8/PP4P1/6K1 w - - 1 34 | Bf6 | Are there any open files in this position? | Yes: c, e, f, h | files |
N1bk3r/p5pp/3b1p2/3B4/3nP2K/3Pn3/PPP4P/R1B1Q2R b - - 2 17 | Nf3+ | What is the material balance in this position? | White is up 13 pawns of material | material |
rnbqkbnr/ppp2ppp/8/4N3/4p3/8/PPPP1PPP/RNBQKB1R w KQkq - 0 4 | Bc4 | Is the d-file open, semi-open, or closed? | semi-open for Black | files |
1rkr4/3b1Q1p/p1p4b/1Nq5/4R3/8/PPP2P1P/1K1R4 w - - 5 21 | Re8 | What piece is on d6? | Empty | occupancy |
5r1k/3b3p/p4n2/2pPpP2/1pP1P2Q/1P6/P4K2/8 b - - 1 46 | Kg7 | Does Black have any isolated pawns? | Yes: e5, h7 | structure |
8/B5kp/2rR1pp1/pN3p2/P7/2n3PP/5P2/6K1 b - - 0 38 | Rxd6 | Is the move from c3 to d1 legal? | Yes | legality |
q7/8/8/8/3kP1P1/p4P1P/6K1/Q7 b - - 8 54 | c1a1 | Is the Black king in check? | Yes | check |
6k1/5pp1/2R5/4Pb1p/5P2/4B1KP/1r4P1/8 b - - 0 31 | Rxg2+ | Is the move from b2 to c2 legal? | Yes | legality |
r2q2k1/2p1nr2/p4p2/n2p1P2/2p3R1/P1P1B2P/1PQ1B1P1/5RK1 b - - 3 25 | d4g4 | Is the Black king in check? | Yes | check |
r1q2rk1/pp1n1p1p/2nP2p1/2N1P1B1/5Q2/1B3P2/PP2K2P/2R5 b - - 0 22 | Ndxe5 | Are there any open files in this position? | Yes: c | files |
rn1qk2r/pbppppbp/1p3np1/6B1/3P4/4PN2/PPPN1PPP/R2QKB1R w KQkq - 1 6 | Bd3 | Is the move from e3 to b7 legal? | No | legality |
2kr3r/1pp1b2p/1p4p1/4p3/1PN1p3/P1P5/2K2PPP/R6R w - - 0 18 | Rae1 | Is the move from h1 to a5 legal? | No | legality |
1r6/p1R2pk1/r2pp3/8/4PP2/2P5/P3RP2/6K1 b - - 0 28 | Rbb6 | Identify any White knight outposts on the board. | None | outposts |
8/p2r1ppk/4p3/2p1P2p/2R4P/1P6/P2rRPP1/5K2 b - - 6 30 | Rd1+ | Identify any Black knight outposts on the board. | d4 | outposts |
rn6/pp5r/2p1N1pk/3p4/4b2Q/8/PPP2PPP/R4RK1 b - - 4 25 | d8h4 | Is the White king in check? | No | check |
r3r1k1/2p1qppp/2p1bb2/p2p4/2P1PPn1/PPN5/2Q1B1PP/2BRR1K1 w - - 0 20 | Na4 | Are there any open files in this position? | No | files |
8/8/K6n/7p/4kb1B/8/5n2/8 w - - 1 45 | g4h6 | What is the material balance in this position? | Black is up 7 pawns of material | material |
3b1r1k/5R1p/2p1r2P/p7/1p6/2B5/PPP5/2K5 b - - 0 2 | bxc3 | Is the d-file open, semi-open, or closed? | open | files |
r1bqk2r/pp1n2pp/4p3/2Pn1p2/8/P1P2P2/2Q1P1PP/R1B1KBNR w KQkq - 2 10 | e4 | Are there any open files in this position? | Yes: d | files |
8/1r4k1/3p1npp/2p2p2/2q2P2/4RNKP/1P4P1/Q7 b - - 18 36 | Qxf4+ | Is the Black king in check? | No | check |
r4rk1/p1pb1ppp/5n2/8/2N5/Q4PP1/P3PB1P/4q1K1 w - - 0 20 | Bxe1 | Does Black have any isolated pawns? | Yes: a7, c7 | structure |
r1k3Q1/p2b4/1ppn4/3Bp3/3bP3/2NP3P/PPP2PP1/1R3RK1 b - - 1 22 | g5g8 | Is the Black king in check? | Yes | check |
r1b1rk2/pp3pp1/4p3/q1npP1PQ/8/2N5/PPP2PP1/2KR3R w - - 1 17 | g6 | What is the material balance in this position? | Black is up 2 pawns of material | material |
1r4k1/2R2p2/3bb3/1pp1PPPp/2pn4/4N1P1/PP4B1/6K1 w - - 0 38 | exd6 | Identify any White knight outposts on the board. | d6, f4, f6, h4, h6 | outposts |
2k1rb1r/2p1n1pp/ppb2p2/2p5/4PN2/2N1BP2/PPPR2PP/3R2K1 b - - 2 15 | Ng6 | Identify any White knight outposts on the board. | None | outposts |
1n1r1rk1/7p/p5p1/2pPpp2/B7/R4P2/P5PP/2R3K1 w - - 0 27 | Rxc5 | Is the move from g1 to h1 legal? | Yes | legality |
rnb1kbnr/p1q5/1p3pp1/2p4p/2P1P3/3BQN2/PP3PPP/R1B1K2R w KQkq - 0 11 | h7h5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/8/3Pk2P/p4p2/8/p2p2P1/5P2/2K5 b - - 0 43 | a2 | What is the material balance in this position? | Equal | material |
r2qkb1r/pp3ppp/2n2n2/1Bpp4/6b1/3PQ3/PPP1NPPP/RNB1K2R b KQkq - 7 8 | f3e3 | Is the Black king in check? | Yes | check |
8/ppk2p2/4pb1p/5p2/5N2/1P2P1PP/P3KP2/8 w - - 0 29 | e4 | What is the material balance in this position? | Equal | material |
r6r/pp3p1p/3kb3/2p1P1B1/1P6/P2P1P2/4K2P/1N6 b - - 0 25 | e4e5 | Is the Black king in check? | Yes | check |
8/8/8/4p3/6k1/5p1p/8/6K1 b - - 0 75 | f1g1 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r2b1rk1/1p1q1ppp/p2p1n2/2p1p1N1/P1PnP3/1PNQ4/1BP2PPP/R4R1K b - - 4 14 | Ba5 | What piece is on b3? | White Pawn | occupancy |
r1bq1rk1/3npp1p/p4bp1/1pp5/2P1P3/4BP2/PP1QN1PP/1K1R1B1R w - - 0 14 | Nc3 | Is the d-file open, semi-open, or closed? | open | files |
2r3k1/5p1p/3P2p1/1Q6/p2bq3/Pp2B3/1p3KPP/4R2R b - - 3 10 | Qf4+ | Is the move from b2 to c3 legal? | No | legality |
8/3b3p/7P/p5k1/p7/8/8/K4q2 w - - 0 47 | f2f1q | Is the White king in check? | Yes | check |
K6R/P1k5/8/8/8/8/8/r7 w - - 0 1 | Rh7+ | What piece is on a1? | Black Rook | occupancy |
1r2r3/ppR4k/3R1p1p/4Np2/3P4/4n2P/P4PP1/6K1 b - - 1 28 | c1c7 | Is the White king in check? | No | check |
rn1qk2r/pb2bppp/1p2p3/2p5/3P4/P1PBPN2/2Q2PPP/R1B1K2R b KQkq - 1 11 | Qc7 | What is the material balance in this position? | Equal | material |
r1bqkbnr/pp2pppp/2n5/3p4/3P4/2PB4/PP3PPP/RNBQK1NR b KQkq - 0 5 | Nf6 | Is the move from c6 to b4 legal? | Yes | legality |
2kr1b1r/ppp2ppp/2n5/3P3q/Q5b1/2N1PN2/PP2B1PP/R3K2R b KQ - 0 12 | Nb4 | Does Black have any isolated pawns? | No | structure |
8/8/K1k1p3/1p1pP2p/1P3N1P/2P2b2/P7/8 w - - 1 26 | Nxe6 | What piece is on d5? | Black Pawn | occupancy |
r1b2rk1/4bppp/p2p1n2/4p3/RPB1P3/2N1QN1q/1BP2P2/R5K1 b - - 1 18 | Ng4 | What piece is on c4? | White Bishop | occupancy |
8/8/1k4q1/7K/6P1/7P/2P5/8 w - - 0 64 | e8g6 | Is the White king in check? | Yes | check |
B2Q3r/5bkp/p7/q5p1/8/6P1/1P3P1P/6K1 w - - 0 27 | Qxa5 | What is the material balance in this position? | Black is up 4 pawns of material | material |
5r2/p5pk/2p4p/5p2/4nP2/1BP1R1PP/P1r5/6K1 b - - 1 30 | Rxc3 | Does Black have any isolated pawns? | Yes: a7, c6 | structure |
5b1r/p2k2pp/4pp2/1R6/8/2P1BP2/P4P1P/3K4 w - - 1 21 | Rb8 | What is the material balance in this position? | Equal | material |
6r1/1k3p2/p1q5/4Bp2/3P1P1K/4Q3/7P/R3Rb2 w - - 7 35 | Reb1+ | Is the move from a1 to a4 legal? | Yes | legality |
r1b1k1nr/pp3ppp/1q2p3/2bp4/2P5/2N2NP1/P1P4P/R1BQ1K1R b kq - 0 11 | g2g3 | Identify any Black knight outposts on the board. | c4, e4 | outposts |
3r1rk1/1bq3pp/p1p1P3/1p1PPp2/P6Q/2p3P1/6BP/3R1R1K b - - 1 24 | Rxd5 | Is the White king in check? | No | check |
r1bqkb1r/1p3ppp/p2p4/2p2P2/8/1n6/PPP2PPP/RNBQR1K1 b kq - 1 11 | Be7 | What piece is on c3? | Empty | occupancy |
8/1r1n1k1p/p1R3p1/P1p5/5P1P/6P1/1b2RP2/6K1 w - - 0 34 | Rxa6 | What piece is on g7? | Empty | occupancy |
6k1/pp3pp1/2p5/4p1p1/P2nP3/2Q2N1P/1PP2PPK/3q4 w - - 7 29 | Nxd4 | Does Black have any passed pawns? | No | structure |
r1b2b1r/1p2pQ1p/pq1k1n2/2pPn1p1/1PP5/2N3B1/P4PPP/2R1KB1R b K - 1 15 | Bf5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
rn3b1r/pp3B2/5kpp/q3p1N1/1pP2Pn1/1N6/PB1P2PP/R3K2R w KQ - 0 22 | Nxa5 | Is the move from f4 to a1 legal? | No | legality |
4r3/7q/nb2prRp/pk1p3P/B2P4/P7/1P2N1P1/1K3N2 b - - 1 3 | Kc4 | What piece is on f5? | Empty | occupancy |
r2qkb1r/pppn1ppp/2n5/2P5/4N3/2Q2P2/PP3P1P/R1B1KB1R b KQkq - 2 11 | Qe7 | Is the White king in check? | No | check |
r1bq2k1/ppp3p1/3b1nnp/3P4/2B1Pr2/2N2NQ1/PBP3PP/R4RK1 b - - 0 15 | Ng4 | Does White have any passed pawns? | Yes: e4 | structure |
r3rbk1/3n1pp1/1q1ppn1p/p7/bpP1P2B/3PNN1P/1P3PP1/R2QR1K1 w - - 0 20 | c6a4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2rq2r1/pp1k1p2/2nbpn2/3p2pp/P2P4/2PB3P/1P2QPP1/R1B1RNK1 b - - 0 19 | Qc7 | Is the c-file open, semi-open, or closed? | semi-open for Black | files |
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