fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
r1bqkbnr/7p/n1p1pp2/pp1p4/3P1N2/PBP5/1P3PPP/R1BQK1NR b KQkq - 1 12 | Qe7 | What is the material balance in this position? | Equal | material |
rnb3nr/p4pbp/2pk2p1/4p3/2BPPB2/5N2/P1P2PPP/1R2R1K1 w - - 0 15 | Nxe5 | Are there any open files in this position? | Yes: b | files |
r5rk/5p1p/4p3/3PNp2/bPp2P2/8/P4K1P/3R2R1 b - - 2 31 | h6 | Is the White king in check? | No | check |
1r2r3/p4pk1/2p2n2/2Np1bp1/8/1PR4P/P3PPB1/4R1K1 w - - 2 25 | Kf1 | Does Black have any passed pawns? | No | structure |
4Kn1k/6R1/q1r1b3/1p6/8/3N4/PBP5/8 w - - 3 4 | Rg5+ | Is the a-file open, semi-open, or closed? | semi-open for Black | files |
rnb2rk1/p3b1pp/8/1p1NPp2/2p5/6P1/1P2QP1P/R1n1NRK1 b - - 0 19 | Nxe2+ | Identify any Black knight outposts on the board. | b3, d3 | outposts |
2kr4/p1pp1p2/1p2p2p/4Pp2/N1P2R2/8/P5KP/8 b - - 0 28 | d6 | Is the move from d8 to e1 legal? | No | legality |
8/p2n2kp/1p6/4K3/3p4/8/PP2B2P/8 w - - 2 46 | Kxd4 | Identify any Black knight outposts on the board. | e3 | outposts |
r4rk1/1p4p1/2p1pqnp/p2pp1nQ/P3P2P/2PPN1P1/1P1N1P2/R4R1K b - - 0 22 | Nf3 | Identify any White knight outposts on the board. | None | outposts |
6r1/p6k/1q3n2/1p1p4/2rP3Q/2P5/P6P/6RK b - - 4 34 | Nh5 | Does Black have any passed pawns? | No | structure |
rn2kb1r/ppp1pppp/5n2/8/2p1q3/4BQ1P/PP3PP1/RN2KB1R w KQkq - 0 8 | d4e4 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r1bqk2r/pp1pppbp/2n2np1/2p5/4PP2/3P1N2/PPPNB1PP/R1BQK2R b KQkq - 3 6 | d5 | Is the White king in check? | No | check |
R7/2pk3p/6p1/2P5/8/3r4/3N1PPP/6K1 b - - 0 33 | Rxd2 | What piece is on g6? | Black Pawn | occupancy |
r1bqkb1r/ppp2ppp/2np1n2/1B2p3/4P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 1 5 | g6 | What piece is on h4? | Empty | occupancy |
r2q1rk1/bp2nppp/p1n3b1/3pP3/3N4/5N2/PP2BPPP/R1BQ1RK1 w - - 6 14 | Be3 | Are there any open files in this position? | Yes: c | files |
r3k2r/pp1qnpb1/2p1bnp1/4p1Bp/2pPP2P/2N2PP1/PP1QN1B1/3R1RK1 w kq - 0 15 | dxe5 | Does White have any isolated pawns? | No | structure |
6k1/6p1/8/6N1/4BP1K/8/4p3/8 w - - 0 48 | Nf3 | Is the move from e4 to g6 legal? | Yes | legality |
6k1/2p2pp1/2p2b2/1P1p4/3P1N2/5QPP/5B2/q5K1 w - - 0 37 | a8a1 | Is the Black king in check? | No | check |
2rbr1k1/1p5p/p2pb1pB/3N3n/4P1n1/P2B4/1PPQ2PP/4R2K b - - 3 24 | Nxh6 | Does Black have any isolated pawns? | Yes: d6 | structure |
r1bqkbnr/p4ppp/2p1p3/3pP3/3p4/2P5/PP3PPP/RNBQK1NR w KQkq - 0 7 | b7c6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bq1rk1/1p2ppbp/p1n2np1/3p4/3P4/BP1BPN2/P1QN1PPP/2R2RK1 b - - 4 12 | Be6 | Does White have any passed pawns? | No | structure |
5b2/R2r2kp/2rP1pp1/pN1n1p2/P2B4/7P/5PP1/3R2K1 b - - 3 35 | Rxa7 | Is the move from c6 to c7 legal? | Yes | legality |
1k6/1p5R/p7/8/6p1/1P6/PKP2r1P/8 w - - 2 32 | a4 | Does Black have any isolated pawns? | Yes: g4 | structure |
3b4/6k1/4P3/p1K2P2/P1P5/8/8/8 w - - 1 57 | Kd5 | Is the g-file open, semi-open, or closed? | open | files |
1r2qrk1/3b1pp1/3b1nnp/2p1p3/B1P1P3/4BNNP/2Q2PP1/R3R1K1 w - - 2 22 | Qd2 | What is the material balance in this position? | Equal | material |
2rq1rk1/pb2bppp/1pn1p3/8/3p4/P1PBPN2/1B2QPPP/3R1RK1 w - - 0 15 | cxd4 | Are there any open files in this position? | No | files |
r1b2rk1/ppq3b1/3pp2p/5p2/1QPPn1p1/6P1/PB2PPBP/1R2NRK1 w - - 1 17 | Rd1 | What piece is on c6? | Empty | occupancy |
Nn1k1b1r/pb1p1ppp/8/qP6/4n3/1p6/P2B1PPP/R2QKBNR b KQ - 1 12 | Nxd2 | Identify any White knight outposts on the board. | a6 | outposts |
r1b1nrk1/ppp2ppp/1b1p4/4P3/B2n3q/3NN3/PPPP1PPP/R1BQK2R w KQ - 2 11 | g3 | Is the move from d3 to a6 legal? | No | legality |
r1bqkb1r/3n1ppp/p3pn2/1pp5/3PP3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 10 | d5 | Is the White king in check? | No | check |
8/p5k1/2p3b1/3pPp2/P2P2p1/1r2P1P1/5RBq/4QK2 b - - 2 36 | f4 | Is the White king in check? | No | check |
r1b1r1k1/p1p2ppp/1pp2n2/7q/5B2/7P/P1P2PP1/R1Q2RK1 w - - 2 18 | e2h5 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r1b2QN1/ppkp2p1/4p2p/2p1Pp2/2BP4/8/PPn2PPP/1NB2RK1 b - - 0 15 | f7f8 | What is the material balance in this position? | White is up 14 pawns of material | material |
8/8/1R3k2/7P/5pK1/8/2r3P1/8 b - - 4 47 | Ke5 | Is the White king in check? | No | check |
r3r1k1/pp3nPp/1b1p1B2/1q1P4/8/P4QN1/1P3PK1/R6R b - - 4 27 | Ne5 | What is the material balance in this position? | White is up 1 pawn of material | material |
rnb2rk1/pp2ppbp/6p1/q1nP4/2Q2B2/2N1P3/PP2NPPP/R3KB1R b KQ - 1 10 | e5 | Identify any Black knight outposts on the board. | None | outposts |
r1bqkb1r/pppp1ppp/2n5/3n2N1/3p4/8/PPP2PPP/RNBQR1K1 b kq - 1 8 | Be7 | Does Black have any isolated pawns? | No | structure |
rr1q2k1/4bppp/b2p1n2/p2PpP2/2P5/2NQB3/P3B1PP/2R2RK1 b - - 3 23 | Rb2 | Is the move from d8 to c8 legal? | Yes | legality |
4r1k1/p4ppp/2N2nq1/5b2/7Q/P1N2P2/1P3RPP/3r2K1 w - - 0 28 | d7d1 | Is the White king in check? | Yes | check |
2kr3r/pb1n1ppp/1qp1pn2/8/2BP4/P1B1PN2/1P3PPP/R2Q1RK1 w - - 1 13 | e8c8 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/p4p1k/1p2qPp1/2p2b1p/2P4P/2Q3P1/P4R1K/8 w - - 0 46 | a3 | Is the e-file open, semi-open, or closed? | open | files |
1q5k/2p2Q1p/p2p4/7P/3PP1P1/1rpn4/8/1K1R2R1 w - - 0 29 | Kc2 | Does Black have any passed pawns? | Yes: a6, c3 | structure |
8/1p3pp1/4p2p/8/5k2/5P1B/5K1P/1b6 b - - 7 44 | g1f2 | What is the material balance in this position? | Black is up 3 pawns of material | material |
4r1k1/1p3p2/p1p4p/P2rP3/1PQPp3/4P3/7q/1RRK4 b - - 1 41 | Rexe5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b1Q1k1/pp1p1ppp/n2q4/2p5/8/5B2/PPP2PPP/R5K1 b - - 1 16 | e1e8 | Is the Black king in check? | Yes | check |
8/4qpk1/3p2pp/1p2r3/2pRP3/2P1PQ1P/1P4PK/8 b - - 3 37 | Re6 | Identify any White knight outposts on the board. | d5 | outposts |
5rk1/4nppp/1Q6/3p4/4qB2/6P1/1P3P1P/2R3K1 w - - 0 34 | Qe3 | What is the material balance in this position? | Equal | material |
R7/1p1r1npk/1Pp1pq1p/2Pp1p2/3P1P2/3QP1BP/6PK/8 w - - 1 34 | Rc8 | Is the move from g2 to b7 legal? | No | legality |
r7/1p1kpQbp/1pnp2p1/5pB1/Pq6/8/1P3PPP/R4RK1 b - - 3 20 | Be5 | What is the material balance in this position? | Equal | material |
r1bq1rk1/ppp1ppbp/5n2/3p3Q/3P1B2/2NBP3/PPP2PP1/R3K1N1 w Q - 3 10 | Qh4 | Does Black have any passed pawns? | No | structure |
r2qrbk1/1bp2ppp/p1np1n2/1p2p3/3PP3/1BP2N1P/PP1N1PP1/R1BQR1K1 w - - 3 12 | d5 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/2pq1pp1/p6p/1p1pPb2/3P4/1nP4P/P4PPN/R2QR1K1 w - - 0 19 | Qxb3 | What is the material balance in this position? | Black is up 3 pawns of material | material |
5rk1/p2Npp1p/b1p3pb/8/Nr1P4/q7/P1Q2PPP/3RR1K1 w - - 2 23 | Nac5 | Are there any open files in this position? | Yes: b | files |
2bq1rk1/3n1p1p/6p1/2p1P3/1p2nP2/1P5P/r3N1P1/1N1RKBQR w K - 1 21 | h4 | Is the move from b1 to g3 legal? | No | legality |
2r1r1k1/2n2p2/p6p/2RnNp2/8/1P6/P4PPB/3R2K1 w - - 2 29 | g4 | Does White have any isolated pawns? | No | structure |
r1bqk2r/ppp2ppp/2p2n2/2b5/4P3/2N5/PPPPBPPP/R1BQK2R b KQkq - 3 6 | h5 | What is the material balance in this position? | White is up 1 pawn of material | material |
q3k3/1b1pb2r/p5pp/1p2Bp2/2r5/2NQ1P2/PP4PP/2R1R1K1 w Q - 4 6 | Rcd1 | What piece is on h3? | Empty | occupancy |
r1bqk1nr/1ppp2pp/5p2/p3p3/1n2P3/1BN2Q2/PP1P1PPP/R1B1K1NR b KQkq - 1 7 | b1c3 | What is the material balance in this position? | White is up 2 pawns of material | material |
8/5p2/4pPp1/1b2P1Pp/p1pk1P1P/5B2/K1P5/8 w - - 0 68 | f5 | Does White have any passed pawns? | No | structure |
r2qk2r/1p1bbppp/p1n1pn2/3pN3/P2p1B2/2PBP3/1P1N1PPP/R2QK2R w KQkq - 0 10 | exd4 | Is the move from h1 to d8 legal? | No | legality |
r2q1rk1/pp3ppp/2B1pn2/3p1b2/1b1P1B2/1QN1PN2/PP3PPP/R3K2R b KQ - 0 10 | Bxc3+ | What piece is on h8? | Empty | occupancy |
5qk1/6rp/1nn2pbQ/pp1p1B2/2pP2N1/2P5/PP4PP/4RRK1 w - - 0 28 | Nxf6+ | Identify any White knight outposts on the board. | None | outposts |
2q2k2/5p1p/NR3p1b/8/5r2/5Q2/PPP3PP/1K6 w - - 0 26 | Qd3 | Identify any Black knight outposts on the board. | e5 | outposts |
r1n1r1k1/1b1q1pp1/p1pBp2p/3pP3/PP4Q1/2P2N2/5PPP/R3R1K1 w - - 4 23 | e7c8 | Identify any White knight outposts on the board. | a5 | outposts |
2kr3r/p1q3b1/1p6/1PpB4/5P1p/P4R1b/2Q1N1P1/1R5K w - - 0 27 | Be4 | Does Black have any passed pawns? | Yes: c5 | structure |
2r5/4k3/1R2p1r1/2p2qp1/7p/8/P1Q2PPP/2R3K1 w - - 8 32 | Qxf5 | Are there any open files in this position? | Yes: b, d | files |
8/8/6K1/5p2/5Pk1/6PP/8/8 b - - 0 47 | h2h3 | Is the Black king in check? | Yes | check |
5rk1/R4p2/1p4p1/2pB4/8/2P1r3/P1P3PP/6K1 w - - 0 20 | e8e3 | What is the material balance in this position? | Black is up 1 pawn of material | material |
7r/4r1b1/2Rp3p/1p4p1/1Nk5/P7/1P4PP/2B3K1 b - - 4 30 | a6c6 | Is the Black king in check? | Yes | check |
rnbqk2r/ppppppbp/5np1/8/3P4/2N2N2/PPP1PPPP/R1BQKB1R w KQkq - 2 4 | e4 | Are there any open files in this position? | No | files |
2r1k2r/1p1bbppp/4p3/3pPP2/1P1N1QP1/p1Pq4/Pn3BBP/2R2RK1 b k - 2 22 | g5 | Does Black have any isolated pawns? | No | structure |
r3k2r/1b1n2pp/pq2Nn2/1p6/2p1P3/2N5/PPB1QPPK/R1B2R2 b kq - 0 17 | Qxe6 | Does White have any isolated pawns? | No | structure |
2kr3r/1pqbbp2/p2pp1n1/4n1p1/4P3/1NNB2BP/PPP1QRP1/1K3R2 b - - 0 20 | Kb8 | Is the move from e5 to d6 legal? | No | legality |
1n3r2/2R5/pp4k1/3p2pp/3P4/5N2/PP3PP1/5K2 b - - 1 30 | Kf5 | Is the h-file open, semi-open, or closed? | semi-open for White | files |
r6k/pp3p1p/3bp1r1/6qN/2pP1pPn/2Q4P/PPB2P2/4R1RK b - - 1 25 | b5 | Is the g-file open, semi-open, or closed? | semi-open for Black | files |
1r4k1/2r2p2/4p1pp/p1n1P3/1pR2P2/1P3B1P/P5P1/3R2K1 w - - 2 31 | Rd6 | What is the material balance in this position? | Equal | material |
r4rk1/1pp2ppp/5q2/p7/1nP1b3/Q4NP1/PP1RPPBP/2K4R w - - 2 17 | Rhd1 | Does Black have any isolated pawns? | No | structure |
8/R7/1p5p/8/8/1P3r1k/P1P4P/2K5 b - - 0 35 | Kxh2 | Identify any White knight outposts on the board. | None | outposts |
2rq1rk1/pb2bppp/1p2p3/3p4/1nPP4/PPR2N2/1B3PPP/3QRBK1 b - - 0 15 | Nc6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
8/Bp3p2/2pNk3/2P1np2/8/4KP1P/P5P1/8 b - - 2 37 | f2e3 | What is the material balance in this position? | White is up 4 pawns of material | material |
2k5/1p3R2/2br4/p3p2P/3p4/2pP4/8/R3K3 b - - 1 36 | a4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1bqr3/pp1n1pkp/2pp2p1/5P2/2P1P3/2NB4/PP1Q2PP/R4RK1 b - - 1 16 | Ne5 | Is the move from e8 to g8 legal? | Yes | legality |
r4rk1/ppp1n3/1b6/3pBppB/3P4/2P2b1P/P5P1/R4R1K w - - 0 24 | Rxf3 | Does White have any isolated pawns? | Yes: a2 | structure |
r3k2r/pp1bbp1p/4p3/4P3/4B1p1/P1NN4/1P1n1PPP/2RR2K1 b kq - 6 20 | Bg5 | What piece is on c3? | White Knight | occupancy |
r1bqkbnr/pp3ppp/3p4/3Np3/3nP3/3B4/PP1B1PPP/R2QK1NR b KQkq - 1 8 | c3d5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r1b1k3/p6q/1p1p3p/n1pP4/2P5/2P1P1Q1/P4PP1/3RK2R w Kq - 0 22 | Qxd6 | Is the White king in check? | No | check |
3r1r2/pb2qpkp/1p4p1/n7/5Q2/2PBR1N1/P1P2PPP/R5K1 b - - 9 19 | Qc5 | Does White have any isolated pawns? | Yes: a2, c2, c3 | structure |
8/2P5/1K3k2/8/4R3/8/8/2r5 w - - 10 6 | Rb4 | Is the Black king in check? | No | check |
5bk1/5p1p/4p1p1/3pP3/p2r4/3N3P/3K1PP1/R7 b - - 1 37 | a3 | Identify any Black knight outposts on the board. | b3, c4 | outposts |
4r1b1/p3q1k1/1pp3p1/2p1p1N1/4P1QP/PP1P4/2P4K/5R2 b - - 0 42 | Rd8 | Identify any White knight outposts on the board. | e4, g5 | outposts |
r2q1rk1/1p2npp1/2pp1n1p/p3pP2/8/2NPPQPP/PPP3B1/R4RK1 w - - 1 15 | g4 | What is the material balance in this position? | Equal | material |
3r1r2/bpq2pk1/p1b1p3/2P3Q1/1P6/P7/5PPP/2R2RK1 b - - 1 21 | Kh8 | Does White have any passed pawns? | Yes: h2 | structure |
2k4r/1rp1N1p1/p5b1/P3Rp1p/8/7P/3P1PP1/R1B3K1 b - - 3 24 | d5e7 | Is the Black king in check? | Yes | check |
r2qk3/p4p2/n1pb1n2/1p1p3p/3PpP1P/P3P2b/2PBN1r1/R2Q1RK1 w q - 0 18 | g3g2 | What is the material balance in this position? | Black is up 7 pawns of material | material |
r4k2/p3p1bB/2ppq3/3n2P1/2QP4/P1N1p3/1P3r2/2K1R2R b - - 6 29 | Rc8 | Does Black have any passed pawns? | Yes: e3 | structure |
1k6/3R4/2K5/8/8/8/8/8 w - - 1 2 | Rd8+ | Does White have any isolated pawns? | No | structure |
N1b2b1r/3n1kpp/p2p1n2/8/1q2P3/2N1B3/1PP2PPP/R2QK2R b KQ - 0 14 | Qb7 | Identify any Black knight outposts on the board. | None | outposts |
8/8/N2b4/1pp1p3/4K1k1/2P5/PP3P2/8 w - - 0 51 | Kd5 | Are there any open files in this position? | Yes: d, g, h | files |
3k4/4R3/4p3/2p1P1p1/2P1P1Pp/5p1K/5r2/8 w - - 6 42 | Rd7+ | Identify any Black knight outposts on the board. | g3 | outposts |
r1bqkbnr/pppp1ppp/2n5/6N1/3pP3/8/PPP2PPP/RNBQKB1R b KQkq - 1 4 | h6 | Is the White king in check? | No | check |
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