fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rnbqkbnr/pp2pppp/8/2p5/2Pp4/4PN2/PP1P1PPP/RNBQKB1R w KQkq - 0 4 | b4 | Is the Black king in check? | No | check |
3rb1k1/p1q2ppp/B3pnn1/8/1b2P3/1NN1BP2/1P2Q1PP/R5K1 w - - 2 20 | Rc1 | Does Black have any isolated pawns? | Yes: a7 | structure |
2bqk2r/p4pp1/2pb1n1p/n3p3/B2r4/2NP1Q1N/PPP2PPP/R1B2RK1 b k - 0 13 | O-O | Is the move from d8 to e7 legal? | Yes | legality |
rnbqkbnr/ppp1pppp/8/3P4/4p3/2N5/PPP2PPP/R1BQKBNR w KQkq - 1 5 | f3 | Are there any open files in this position? | No | files |
rn1qkbnr/pbpp1pp1/1p2p3/8/7p/1P2PN1P/PBPPBPP1/RN1QK2R b KQkq - 0 6 | Rh6 | Is the move from h8 to h5 legal? | Yes | legality |
1rb2rk1/1nq1bppp/3p1n2/1ppPp3/1P2P3/2P2N1P/2BN1PP1/R1BQR1K1 w - - 1 17 | Nf1 | Are there any open files in this position? | Yes: a | files |
2r3kb/3n3n/bp2N2P/p2pp1p1/3P2P1/2P5/3B1N2/1R2K2R w K - 1 33 | Rh3 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r2r2k1/1pqb1ppp/4pn2/2P5/p7/1N3B2/PP1BQPPb/2R1R2K w - - 2 21 | Ba5 | What piece is on d1? | Empty | occupancy |
r1q2r2/1p4p1/p1bpp1k1/P1n3P1/1n1B4/2N3Q1/1PP3PP/R4R1K w - - 1 24 | Rf6+ | Identify any Black knight outposts on the board. | e5 | outposts |
r2q3r/1ppknpRp/p1np4/4pP2/PP2P3/2P5/6PP/2BQ1RK1 b - - 0 15 | f6 | What piece is on c6? | Black Knight | occupancy |
rnbqk1nr/pp2bppp/2p5/8/2BpN3/8/PPP1QPPP/R1B1K1NR b KQkq - 3 7 | Nd7 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2k1r3/1pp2R1p/p1r1p3/2P3Q1/1P6/P6P/2q2PP1/4R1K1 b - - 0 27 | e3g5 | What is the material balance in this position? | White is up 1 pawn of material | material |
5r2/p3ppk1/1p2b1pp/2p1P3/8/PqP4P/5PPN/2Q1R1K1 w - - 2 25 | Rd1 | Identify any White knight outposts on the board. | None | outposts |
r1bq1bk1/ppp1nr1p/3p1np1/2PPpp2/1PN1P3/B1N2P2/P3B1PP/R2Q1RK1 b - - 4 14 | f4 | Does Black have any passed pawns? | No | structure |
2r5/5pk1/6pp/4p3/PQn1q3/5N1P/5PP1/2R3K1 w - - 2 32 | Nxe5 | What is the material balance in this position? | Equal | material |
8/8/p2bk3/2p1prp1/PpK1R3/5PB1/1P4PP/8 w - - 7 38 | h3 | Identify any White knight outposts on the board. | e4, g4 | outposts |
r1r3k1/1b3pp1/1B2p2p/6q1/P1P5/1Q3P2/6PP/R4RK1 b - - 0 23 | e5 | Does White have any passed pawns? | Yes: a4, c4 | structure |
8/5Rkp/5p2/8/P1B4P/1P4P1/rr3PK1/8 b - - 0 43 | d7f7 | Is the Black king in check? | Yes | check |
8/p7/1nP1R2p/3P3k/6p1/4N3/3r3P/5K2 w - - 1 47 | c7 | Does White have any passed pawns? | Yes: c6, d5 | structure |
r1n5/ppk5/7r/4q3/8/8/PPP2PPP/4RK1R w - - 0 29 | Rxe5 | What is the material balance in this position? | Black is up 8 pawns of material | material |
r1bq4/pppppkbN/2n2pQp/4P3/3P4/3B3P/PPP2PP1/RN2K2R b KQ - 0 11 | Kg8 | Is the move from c8 to c2 legal? | No | legality |
5r1k/6qp/p2p4/r2Bp3/2P1Pp1b/5R1P/1Q4P1/1R5K w - - 2 37 | Rb3 | Does Black have any passed pawns? | Yes: a6 | structure |
5rk1/4n1p1/1p1q1p1p/p2pN2P/P2P4/5QP1/1P3PK1/2R5 w - - 0 29 | Nd3 | Is the e-file open, semi-open, or closed? | open | files |
1r5r/5kpp/1q1pb3/1p1QP3/2p2P2/8/1PP3PP/1NB2R1K w - - 5 23 | Qd1 | Identify any White knight outposts on the board. | d6 | outposts |
2kr4/2p2p1p/p2r1np1/np2p3/4P3/PPP2PP1/2KB2NP/3R1R2 b - - 0 22 | Nxb3 | What piece is on b6? | Empty | occupancy |
r2qr1k1/1p1n1ppb/p1p4p/3p4/1P1NN3/1Q2P3/P2PBPPP/2RR2K1 b - - 0 16 | dxe4 | What is the material balance in this position? | White is up 3 pawns of material | material |
r1bq1rk1/pp2nppp/2pp1n2/2b1p3/3PP3/2PB1N1P/PP3PP1/RNBQ1RK1 b - - 1 9 | Bb6 | Is the e-file open, semi-open, or closed? | closed | files |
r1b1k1rQ/3n4/p1q1p3/4p3/6pB/2pB4/PPP3PP/2K2R2 w - - 6 29 | Bg6# | Is the move from c1 to d1 legal? | Yes | legality |
r1q1r1k1/1pp2pbp/3p2p1/pPnNn3/4PB2/6PP/PPQ2PB1/3RR1K1 b - - 6 17 | b6 | Is the move from e8 to e6 legal? | Yes | legality |
r3r1k1/pppq1pbp/3pbnp1/6B1/1nPNP3/2N5/PP2BPPP/R2Q1RK1 w - - 2 12 | Qd2 | What is the material balance in this position? | Equal | material |
r1b3nr/pp2k2p/5q1b/2B1n2Q/3PPp1p/1P6/P1P3P1/RN1R2K1 b - - 0 15 | Ke6 | Identify any Black knight outposts on the board. | e3, g3 | outposts |
2b4q/r4kb1/1pp2pp1/2p1p3/2PnP1P1/1PNPBP2/1Q4N1/5RK1 w - - 3 40 | Ne2 | Is the move from f1 to e4 legal? | No | legality |
r1bqk2r/pp1n1pp1/2pbp2p/8/3PQ3/3B1N2/PPP2PPP/R1B1K2R b KQkq - 0 10 | Qc7 | Is the move from d7 to b6 legal? | Yes | legality |
r1br2k1/pp2pp1p/5bpP/q1pP4/3nP3/2N2NP1/PP1Q1PB1/2R2RK1 b - - 4 18 | Nxf3+ | What piece is on f6? | Black Bishop | occupancy |
r1b5/pp1n3p/1kpQ4/8/8/2P2N2/P1P2qPP/2KR4 w - - 10 29 | Qb4+ | Does Black have any isolated pawns? | Yes: h7 | structure |
8/p7/1p5b/8/2P1Kpp1/6k1/P3B1P1/8 w - - 4 16 | Bd1 | Is the move from e4 to f5 legal? | Yes | legality |
r2q1rk1/2p1bppp/p1n1b3/4p3/RP2P3/2P2N2/3NQPPP/2B1R1K1 b - - 0 16 | Qc8 | What piece is on g1? | White King | occupancy |
8/8/3b4/5k2/8/2K5/1p6/8 w - - 0 48 | Kxb2 | Does Black have any passed pawns? | Yes: b2 | structure |
b1r1rnk1/2b1qppp/1p1ppn2/1N5P/PpP1PP2/4NBP1/1B4Q1/3R1R1K w - - 1 28 | h6 | What piece is on f6? | Black Knight | occupancy |
rnbqr1k1/pp3ppp/8/3p4/3P4/1BNQ4/PPP1N1PP/R4nK1 w - - 0 14 | Rxf1 | Is the e-file open, semi-open, or closed? | open | files |
8/p4p1p/3k2p1/3Pp3/2p1P3/2K4P/P4PP1/8 b - - 3 39 | Kc5 | Does White have any isolated pawns? | Yes: a2 | structure |
2rqr1k1/3nbppp/bp2p3/pn1pP1N1/3P1N1P/P5P1/1P3PB1/R1BQR1K1 b - - 8 18 | Nf8 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/ppp1ppbp/3p2p1/4n3/2P1P3/3BB1QP/PP2NPP1/R3K2R b KQ - 1 12 | Nxd3+ | Does Black have any passed pawns? | No | structure |
r1bqkb1r/p2n1ppp/2p1pn2/1p6/3P4/2N1PN2/PP2BPPP/R1BQK2R b KQkq - 1 8 | a6 | Is the Black king in check? | No | check |
8/1q3p1k/5Qp1/3pP2p/7P/4B2K/8/8 w - - 0 86 | e6 | What is the material balance in this position? | White is up 1 pawn of material | material |
r3r1k1/p2q1pp1/1bp4p/3n2Pn/3P2RB/2N2N1P/PP1Q1P2/3R1K2 b - - 0 21 | Qf5 | Identify any White knight outposts on the board. | c5 | outposts |
4k3/ppp2pp1/2n1r3/2pRP3/2P2BP1/1P6/P4PK1/8 b - - 2 26 | b6 | Identify any Black knight outposts on the board. | None | outposts |
1b3rk1/5pq1/4p2p/p1r5/8/1P1B1Q2/6PP/3R1R1K b - - 9 31 | Rc3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
3r1rk1/pb1n1ppp/1p2pn2/8/2PP1q2/P2B4/1B1NQPPP/R3R1K1 w - - 8 17 | Nf1 | Identify any Black knight outposts on the board. | a5 | outposts |
1n1k4/8/1pR5/p2p1r1p/P2P1p1P/1P1N1P2/4K3/8 w - - 3 39 | Rg6 | What is the material balance in this position? | Equal | material |
1r4k1/5pp1/p6p/2Q5/P7/3b1PP1/7P/2Rq1BK1 b - - 6 30 | Qxf3 | Is the move from d3 to e4 legal? | Yes | legality |
rn2qrk1/pp2p1b1/2ppb1p1/5pBp/2PP3P/1PR1PNP1/P4PB1/3Q1RK1 b - - 0 13 | Nd7 | Does Black have any isolated pawns? | No | structure |
B3b2k/5rb1/p6p/2p1r3/2p2Q2/4n3/1P4RP/6RK w - - 1 36 | Rxg7 | Does Black have any passed pawns? | No | structure |
3r2k1/6p1/4p3/2p1P3/2P3Pp/4Pp2/5P2/R5K1 w - - 0 36 | Kh2 | Does White have any passed pawns? | No | structure |
r4rk1/pp2qppp/1bn2n2/8/P2p4/1Q3NP1/1P1BPPBP/R2R2K1 b - - 0 15 | Ne4 | Identify any White knight outposts on the board. | None | outposts |
r4r1k/2qbb1np/3p1p2/p1nPpP2/1pp1P2P/2P2NN1/PPB3K1/R1BQR3 w - - 1 24 | h5 | Are there any open files in this position? | Yes: g | files |
1r3k2/b6p/P2R2p1/1B3p2/1P2p3/6PP/5P2/6K1 w - - 3 35 | Rd7 | Does Black have any passed pawns? | No | structure |
r7/5pk1/2q3pp/4p3/PQn1n3/5NNP/5PP1/R5K1 w - - 0 30 | Nxe5 | Does White have any isolated pawns? | Yes: a4 | structure |
r5k1/pp2rp2/2n2RpQ/4p3/2P1P1q1/3p4/PP3K1P/3R4 b - - 3 27 | g2f2 | What is the material balance in this position? | Black is up 4 pawns of material | material |
8/5k2/5Pp1/4K1P1/8/8/8/8 b - - 4 7 | Kf8 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1bnk2r/pp1p1ppp/1bpq3n/3Pp1B1/Q1B1P3/N1P2N2/P4PPP/R4RK1 w kq - 0 12 | Be2 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r4r1k/p1p4p/1pPq1n2/2pPQPp1/4P1N1/P1P5/6P1/1R2K2R w K - 1 27 | Qxd6 | Are there any open files in this position? | No | files |
rnbqkbnr/ppp2ppp/8/4p3/4P3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 0 5 | b1c3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
8/6pp/p1k2b2/1ppbNp1P/5P2/1P1KN1P1/P7/8 b - - 4 32 | f3e5 | Is the Black king in check? | Yes | check |
r1br1k2/ppq2ppQ/5b2/5pN1/3P4/P1P5/5PP1/1RBR2K1 w - - 2 23 | Re1 | Is the Black king in check? | No | check |
8/8/5p2/K2R1k1p/8/8/8/8 b - - 1 47 | d4d5 | Is the Black king in check? | Yes | check |
N4r2/pp1k2p1/3pb3/2p3qp/2PnPp2/1P5P/P2Q2B1/R4R1K w - - 4 22 | e5 | Does Black have any isolated pawns? | No | structure |
r2q1rk1/2p3p1/p2bP3/np1p1p2/3P4/2P4P/P1B1QP2/R1BR3K w - - 0 23 | Rg1 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
6k1/2p3pp/p1r5/1p1p4/1P6/2P5/P3r2P/R3BNK1 b - - 2 27 | Rg6+ | What piece is on b5? | Black Pawn | occupancy |
r5k1/1pp3pp/p1np3q/4pr2/PP6/2PPPN1P/5QP1/RN3K2 w - - 0 20 | f8f5 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r2q1rk1/3bbp2/p2ppnp1/1p5p/3NP3/3B2Q1/PPPB1PPP/4RRK1 w - - 2 17 | e5 | What is the material balance in this position? | Equal | material |
r2qnrk1/3nbppp/3pb3/5PP1/p3P3/4B3/PPNQ3P/1K1R1B1R b - - 0 19 | Bb3 | Identify any White knight outposts on the board. | d5 | outposts |
r4rk1/pq5p/3b2p1/2p2p2/Np2n3/4B1P1/PPQ1B2P/R2R2K1 w - - 0 23 | Nxc5 | Is the White king in check? | No | check |
2rq2k1/pp1N1p2/2nb1npp/3N4/3P4/7P/PPB2PP1/R1B2rK1 w - - 0 19 | e1f1 | Is the White king in check? | Yes | check |
r1bqk2r/pppp1ppp/8/2b1P3/2P5/2P2Q2/P4PPP/R1B1KB1R w KQkq - 1 10 | Qg3 | Is the move from c1 to a3 legal? | Yes | legality |
8/6R1/4Npk1/n6p/4P2P/5P2/P1p3PK/1r1n2B1 b - - 0 39 | Kh6 | Identify any White knight outposts on the board. | d5, f5 | outposts |
8/5kb1/3p1q2/p1p2p1p/PpP2P1P/1P2NbP1/3Q3K/2B5 w - - 5 37 | Kg1 | Is the move from g3 to g4 legal? | Yes | legality |
r1bq1rk1/Np4b1/3p1nn1/P2Pp2p/4Pp2/5Pp1/1P2BBPP/R2QNRK1 w - - 0 19 | Bb6 | Is the move from e4 to d8 legal? | No | legality |
8/6k1/p4rp1/8/bP2R2p/2P2N1P/1K4P1/8 b - - 2 61 | g5 | Identify any White knight outposts on the board. | a5, c5, d4 | outposts |
r1bqk2r/pp3ppp/2n2n2/3p4/3N4/BPbBP3/P2N1PPP/2RQK2R b Kkq - 6 11 | Qa5 | Identify any Black knight outposts on the board. | None | outposts |
1Q6/8/3Q4/5pP1/2k4p/4P2P/PK6/8 w - - 4 52 | Qbb4# | Does Black have any passed pawns? | No | structure |
r1b2rk1/p3q1pp/1p3n2/3p1p2/8/1PNnPN2/P4PPP/R2Q1RK1 w - - 0 16 | Qxd3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
R7/p1r2kpp/4np2/4p3/1Rn5/2P3P1/P3NPKP/2Br4 w - - 20 33 | Rab8 | Is the move from g3 to g4 legal? | Yes | legality |
6k1/5pb1/1Q4p1/r7/8/8/P4PPK/8 b - - 0 39 | Rxa2 | Is the move from a5 to f2 legal? | No | legality |
5rk1/1b1pqp1p/3np1p1/8/1P1b1P2/P2B4/2P1N1PP/1R1Q1RK1 w - - 0 23 | f6d4 | Is the Black king in check? | No | check |
3qr3/1b1rb2Q/p2pk1p1/1p1Pp3/8/P2BB3/1PP3PP/4R2K b - - 0 24 | Kxd5 | Identify any White knight outposts on the board. | None | outposts |
1r3rk1/R3npp1/4pnp1/1p1p4/3P1qPQ/2P1RN1P/1P1N1P2/6K1 b - - 4 22 | Nc8 | Is the White king in check? | No | check |
5rnr/1p5k/p2PB2n/3Np1R1/2P2p2/8/PP6/2K4R w - - 1 29 | d7 | What piece is on g4? | Empty | occupancy |
r2r2k1/p4p1p/1nb1p3/2N5/P1pP4/8/2R2PPP/4RBK1 w - - 1 24 | a5 | Identify any White knight outposts on the board. | c5 | outposts |
r4rk1/pb1qbppp/1p2pn2/2p5/3p1P2/1P1BP1N1/PBPP2PP/R2Q1RK1 w - - 0 13 | e4 | Is the h-file open, semi-open, or closed? | closed | files |
4r3/p5k1/1p3Qp1/2p1P1Rp/7P/3q4/PP5K/8 b - - 4 37 | f2f6 | Identify any White knight outposts on the board. | d6 | outposts |
r4b1r/pb1q1kpp/2p5/2p2p2/Q4B2/2Np4/PPP2PPP/4RRK1 w - - 4 17 | Qb3+ | Identify any White knight outposts on the board. | None | outposts |
r2qr1k1/6pp/P2p4/3Pb3/2B2p2/N4P2/PP3Q1P/3R2K1 b - - 0 25 | Qa5 | Identify any Black knight outposts on the board. | None | outposts |
r1bq3Q/pp1kb2p/3pp3/6BQ/8/2PB4/P1P2PPP/R3K2R b KQ - 0 16 | Qxh8 | Is the move from a7 to g6 legal? | No | legality |
2r3k1/4q2p/4b1p1/p1N4P/1p6/8/PPQ5/K1R5 b - - 4 40 | Qg5 | Is the move from g8 to g3 legal? | No | legality |
rnbqk2r/1p2ppb1/p2p1np1/6Bp/2BNP3/2N5/PPPQ1PPP/R3K1R1 b Qkq - 3 9 | Qa5 | Does White have any passed pawns? | No | structure |
5rk1/5p1p/R2N2p1/5pQ1/5n2/7K/5q1P/n7 w - - 0 37 | d3f4 | Is the White king in check? | Yes | check |
r4rk1/1bq1b1p1/2pN3p/p3p3/2P3n1/3B4/PPQ2PPP/R2RB1K1 b - - 0 18 | e4 | Identify any Black knight outposts on the board. | None | outposts |
5r1k/5ppp/8/2p1R3/4P3/5Q2/5PPP/2q3K1 w - - 1 25 | c2c1 | Is the White king in check? | Yes | check |
k6r/pp3bpp/N2r1p2/1p6/P1n5/6P1/4PPBP/R1R3K1 w - - 0 25 | Nc5 | Identify any White knight outposts on the board. | None | outposts |
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