fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
5N2/p6k/1b4Rp/4P1pP/6P1/K7/8/8 b - - 5 44 | e6f8 | Is the Black king in check? | Yes | check |
r2q1rk1/pb1nbppp/1pp1p3/8/2PPQ3/5NP1/PP3PBP/R1BR2K1 b - - 2 12 | Qc8 | What piece is on c4? | White Pawn | occupancy |
r3kb1r/2q2pp1/2b1p2p/1B2P3/1p5B/1n3Q2/PPP3PP/2KRR3 w kq - 0 21 | Kb1 | Identify any White knight outposts on the board. | None | outposts |
7Q/1b5p/p1k1pn2/1pp1p1b1/4P2P/2NPq3/PPP3P1/5R1K b - - 0 22 | Bxh4 | Is the move from c5 to f7 legal? | No | legality |
rb5k/2qp2pp/4r1n1/1QP2p2/P2B1P2/1NP4P/6P1/R4RK1 w - - 3 26 | g3 | Identify any White knight outposts on the board. | b4, b5, b6, d4, d6 | outposts |
r4r2/p5pk/p1PN2Np/4P3/8/2P4b/PP3RPP/R5K1 b - - 0 24 | f4g6 | What is the material balance in this position? | White is up 6 pawns of material | material |
8/8/4k3/2p1P1p1/p1Pp2Pp/b2N3P/P7/3K4 w - - 0 124 | Kc2 | Does White have any passed pawns? | Yes: e5 | structure |
1r1q1rk1/1ppn1pb1/p3p2p/3pP3/3P1p2/2PB1N2/PPQ2PPP/3RR1K1 w - - 0 18 | Re2 | Is the White king in check? | No | check |
2k5/3p1p1p/r3p1p1/P7/1P5P/4P3/5PP1/3R2K1 b - - 0 29 | Rc6 | Is the move from h7 to b7 legal? | No | legality |
2r3k1/pp3pb1/3p1nP1/4p3/3BP3/2P5/q1P4Q/2K3RR w - - 0 24 | gxf7+ | Is the Black king in check? | No | check |
2R3k1/p1Pq1pbp/b2Bp1p1/5n2/P1Np4/6P1/4PP1P/3Q1RK1 b - - 0 23 | Qxc8 | Does Black have any isolated pawns? | Yes: a7 | structure |
r1bqkn1r/ppp1bpp1/3ppn1p/8/3PP3/2PB2B1/PP1N1PPP/R2QK1NR b KQkq - 2 8 | g5 | Are there any open files in this position? | No | files |
8/1k4b1/8/3K3P/P1P5/1N6/8/8 b - - 0 162 | Bh8 | Is the move from b7 to e6 legal? | No | legality |
rnb1kb1r/p1pp1p1p/6p1/1q6/4Pp1P/3P2N1/PPP3P1/RNBQ1K1R w kq - 0 12 | Nc3 | Is the move from g2 to d3 legal? | No | legality |
1kbrq2r/ppp5/5pp1/P1bp1p1p/1P1P4/3QP3/2P1NPPP/RR4K1 w - - 0 17 | dxc5 | Identify any White knight outposts on the board. | None | outposts |
8/3Q4/2P2k2/3K3P/8/8/8/8 w - - 2 66 | e7f6 | What is the material balance in this position? | White is up 11 pawns of material | material |
r4rk1/1pp2ppp/2n1p3/1QPnP1q1/3P4/p5BP/P4PB1/K1R3R1 w - - 1 28 | Bxd5 | Does Black have any passed pawns? | No | structure |
2k3r1/1b3r1p/p2pn2B/4p1p1/2P1Q3/2P2NP1/1P2KP1R/7R b - - 0 30 | Bxe4 | What piece is on c6? | Empty | occupancy |
r2r2k1/pp3pp1/7p/3Pp3/2P4n/P1R2P2/5P1P/1B2R1K1 b - - 2 21 | f6 | Is the move from g7 to g5 legal? | Yes | legality |
r1q1r1k1/1ppn1pb1/4p1pp/3bP3/p2N1PPB/2QN3P/1PP4K/3RR3 b - - 3 27 | c5 | What is the material balance in this position? | Black is up 1 pawn of material | material |
8/1p6/2p3p1/p3nk2/Pr6/1P3PR1/2P1B1P1/4K3 w - - 0 39 | Rh3 | Does White have any passed pawns? | No | structure |
8/2p1k3/1p1pb1rr/p7/4RPP1/1NP5/PP6/2K1R3 b - - 0 34 | f2f4 | What is the material balance in this position? | White is up 1 pawn of material | material |
r1b1r1k1/ppp1qpbp/3p2p1/2nP4/2P1P3/2N2P1P/PPQ1B1P1/R1B2RK1 b - - 4 14 | Qh4 | Identify any Black knight outposts on the board. | None | outposts |
r5k1/1r5p/6p1/B1Pnpp2/PPN5/3N1P2/6Pb/1R3K2 b - - 0 34 | e4 | What piece is on e7? | Empty | occupancy |
5rk1/3n1pp1/4p3/3p2NQ/3P4/8/5PPP/6K1 b - - 3 3 | Nf6 | Does Black have any passed pawns? | No | structure |
1r1q1rk1/3nppbp/b1np2p1/p7/Np1PP3/2P2NPP/1P1B1PB1/R2QR1K1 b - - 0 15 | Nb6 | Is the move from g6 to g4 legal? | No | legality |
rnbqk2r/pppp2pp/5pn1/4p2Q/1bB1P3/8/PBPP1PPP/RN2K1NR w KQkq - 4 6 | f4 | What is the material balance in this position? | Black is up 1 pawn of material | material |
r5k1/1b3p1p/1nq1p1p1/2r5/2pB4/5PPP/P3P3/2QRRBK1 w - - 1 37 | e4 | Does Black have any passed pawns? | Yes: c4 | structure |
8/8/8/8/4k3/3R4/3K4/8 w - - 2 2 | Ke2 | Does Black have any isolated pawns? | No | structure |
3n1bk1/p2q1p2/b3p3/2p3Qp/7P/1PN1P1P1/P4PBK/8 b - - 6 32 | Bg7 | What piece is on b8? | Empty | occupancy |
r1b1k2r/1pq2ppp/p2ppn2/2b5/3QPB2/2N3P1/PPP2PBP/R3R1K1 w kq - 0 12 | Qd2 | Identify any White knight outposts on the board. | None | outposts |
8/2p3p1/2nk3p/pp6/3p1B2/P7/1PP2PPP/5K2 b - - 1 25 | Ne5 | What is the material balance in this position? | Equal | material |
r2q1rk1/2p2p1p/bpnn2p1/p1b1p3/2N1P2N/1PP3PP/P3QP2/R1B1RBK1 b - - 1 16 | Qf6 | Does Black have any passed pawns? | No | structure |
rnbqkb1r/pp3ppp/5n2/3p4/2pP4/2P2N2/PPB2PPP/RNBQK2R b KQkq - 1 7 | Bd6 | Are there any open files in this position? | Yes: e | files |
3r3k/1p1r1ppp/p3p3/4P3/b2B1PP1/P1P4P/2P1q2K/R3R3 w - - 0 3 | Rxe2 | Is the move from a1 to d5 legal? | No | legality |
b5rk/5p1p/pQ1p2r1/4p3/2P2n1q/6N1/PP3RPP/3R1BK1 w - - 5 38 | Qb3 | Does Black have any isolated pawns? | Yes: a6, h7 | structure |
1rb1r1k1/7p/pp1p2p1/2pP3n/P2bPpP1/3Bq3/RPQ3RP/2B2N1K b - - 3 27 | Qe1 | Is the c-file open, semi-open, or closed? | semi-open for White | files |
2rrn1k1/pp1nbpp1/1qp1p1bp/4P3/1PP5/PQ3NP1/1B1N1P1P/R3RBK1 w - - 1 19 | c5 | What piece is on b6? | Black Queen | occupancy |
8/8/8/8/p7/nk6/2p5/3K4 w - - 0 74 | c3c2 | Is the White king in check? | Yes | check |
r2qk2r/pp1n1p1p/3b1p2/1BpNp3/4P3/5Q2/PPP3PP/R3K2R w KQkq - 0 14 | Nxf6+ | Identify any Black knight outposts on the board. | e5 | outposts |
8/5pk1/4p3/3p3P/3P2K1/5P2/8/8 b - - 4 47 | Kh7 | Is the c-file open, semi-open, or closed? | open | files |
r1b1k2r/p1pp3p/2n2pp1/1p1q1P2/3Pp3/2B5/P1P1Q1PP/2KR2NR w kq - 0 14 | Nh3 | What is the material balance in this position? | Black is up 2 pawns of material | material |
r1bqkb1r/pp1n1ppp/2n1p3/2ppP3/3P1P2/5N2/PPP1N1PP/R1BQKB1R b KQkq - 3 7 | Qb6 | Is the move from c6 to a5 legal? | Yes | legality |
r1bqkbnr/pp2pp1p/2np2p1/8/3BP3/2N5/PPP2PPP/R2QKBNR b KQkq - 0 6 | Nf6 | Is the Black king in check? | No | check |
2rr2k1/3bqpp1/p2b1n1p/1p2p3/1Pn5/PQN1PN1P/4BPP1/2RRB1K1 w - - 0 22 | e4 | Is the d-file open, semi-open, or closed? | open | files |
r1bk3r/ppppbQpp/1q6/8/2B5/P1p5/1P3PPP/3RR1K1 w - - 0 22 | Qxe7# | What piece is on f8? | Empty | occupancy |
8/6P1/8/p6p/P6P/5p2/4k1K1/8 w - - 0 72 | Kg3 | Is the move from g2 to h3 legal? | Yes | legality |
r3k2r/1p1bbpp1/1qn1p3/p2pP2p/3P2nP/P2B1NP1/1P2NPK1/R1BQ3R w kq - 0 15 | b3 | What piece is on b4? | Empty | occupancy |
5rk1/6pp/1B1p4/3P1p2/2Q1p1n1/P2B4/2P1KPP1/4R2q b - - 8 34 | exd3+ | Does Black have any passed pawns? | No | structure |
1rbqr1k1/2p2pp1/2pp1n1p/p3p3/1b2P3/1P1P1NNP/P1PB1PP1/R2QR1K1 b - - 2 13 | Ra8 | Identify any White knight outposts on the board. | a4 | outposts |
2r3k1/6pp/8/3n1P2/p1n3R1/P3P2P/1P1B1N2/4K3 w - - 4 36 | e4 | Is the move from g4 to e4 legal? | Yes | legality |
7q/2p5/1r1p4/2nPp1k1/4PpPp/Q1P2P2/2PK2B1/7R b - - 0 48 | Qb8 | Is the Black king in check? | No | check |
r3k2r/pQ1n1p1p/6p1/4p3/7q/5Pn1/PPP4P/RNB1K2R w KQkq - 0 14 | Qxa8+ | What is the material balance in this position? | Equal | material |
r4rk1/1p1bb1pp/3p1n2/4p3/1pP1Pp2/pB1P1P2/P4NPP/KNB4R w - - 10 21 | e8g8 | What is the material balance in this position? | Black is up 3 pawns of material | material |
2k5/1p1r2p1/p7/3n1pBp/2r4P/2PR1K2/P4PP1/2R5 w - - 4 28 | Rcd1 | Is the move from g5 to d8 legal? | Yes | legality |
5b1r/1Q4pk/p6n/4Pq1p/5P2/7P/PPr3P1/2BR1RK1 w - - 0 24 | Qxa6 | Is the move from g2 to g4 legal? | Yes | legality |
rnb1kb1r/pp2pppp/5n2/1B1p4/3q1B2/1P6/P1P2PPP/RN1QK1NR b KQkq - 1 7 | d3b5 | Is the Black king in check? | Yes | check |
r1b1rnk1/1p3pbp/1qpp2p1/p7/2PNP3/1P3P2/PB1QN1PP/1R3RK1 b - - 0 17 | d5 | What is the material balance in this position? | Equal | material |
2b3k1/1p5p/2n1p3/P7/4P1p1/2P3p1/2Q3Br/5K2 b - - 0 34 | Rh5 | Identify any White knight outposts on the board. | b4, b6 | outposts |
8/p5p1/5Qk1/6p1/8/6K1/PPP5/8 b - - 0 46 | c6f6 | Is the Black king in check? | Yes | check |
rnbkBb2/ppp1p3/3p4/5pp1/2PPP3/8/PP2KPP1/R1BN4 b - - 0 14 | Kxe8 | Is the move from f8 to h6 legal? | Yes | legality |
r2r4/pbqnnppk/1p2p3/2p3N1/3P4/2P5/PPN1QPPP/3RR1K1 b - - 1 17 | Kg8 | Are there any open files in this position? | No | files |
6k1/7p/3p2p1/3P4/4q1PP/2p2K2/1p6/1R6 w - - 0 40 | b4e4 | Is the White king in check? | Yes | check |
8/8/8/7p/7k/8/7K/8 b - - 1 61 | g2h2 | What is the material balance in this position? | Black is up 1 pawn of material | material |
2kn4/ppp4p/8/3P2B1/8/2r2PPK/P7/4R3 w - - 1 32 | Re8 | Does Black have any passed pawns? | No | structure |
4rkq1/pbp2r2/6p1/2p1B1Np/2P3p1/2P5/P2Q1PPP/4R1K1 w - - 8 32 | Ne6+ | Is the White king in check? | No | check |
2r5/5pk1/3q2p1/p7/Pr5p/2pB1P1P/2Q3P1/2RN1K2 w - - 1 38 | Nxc3 | Is the b-file open, semi-open, or closed? | open | files |
r4qk1/3bn2p/4pbp1/pNPp4/P7/8/1PB2PPP/R2Q1RK1 b - - 0 19 | Nc6 | What is the material balance in this position? | White is up 3 pawns of material | material |
4r1k1/3r1b1p/p2P1Q2/4nP2/1pp1pN2/4P3/qP3RPP/5RK1 w - - 1 36 | Ne6 | Identify any White knight outposts on the board. | e6 | outposts |
rnbq1rk1/1pp2ppp/p3p3/3nN3/1b1PN3/6P1/PpQ1PPBP/R1B2RK1 w - - 0 11 | Bxb2 | Is the move from c1 to g2 legal? | No | legality |
1r6/p2n4/1p2R1p1/2p2kNp/P1P2P2/2P3P1/2K4P/8 w - - 10 34 | Re7 | Is the f-file open, semi-open, or closed? | semi-open for Black | files |
4n3/p1nkp3/1p1p1ppp/8/2NPP2P/3N1P2/PP2K1P1/8 w - - 0 32 | d5 | What piece is on c4? | White Knight | occupancy |
r1b2q2/1p4pk/p6p/5p2/3n1P2/P2B1QP1/1P4P1/1R2R1K1 w - - 0 31 | c6d4 | What is the material balance in this position? | White is up 2 pawns of material | material |
r3kb1r/ppp2ppp/8/3bP3/3P4/3Bnq2/PPP2QRP/RN4K1 b kq - 1 20 | d2f2 | What is the material balance in this position? | Black is up 3 pawns of material | material |
r4r2/3b1p1k/p2p1q1p/2b1nNp1/p3P3/6RP/B1R2PPK/2BQ4 b - - 5 27 | Bxf5 | Does Black have any passed pawns? | Yes: a4, a6 | structure |
2rqrnk1/pp4pp/4p3/3pPpN1/Pb1P1P2/3QB3/1P4PP/R4R1K w - - 4 20 | g4 | Does White have any isolated pawns? | No | structure |
2r1b1k1/1p3pp1/1Q1n3p/p2PN3/3P1q2/5P1P/6P1/R4BK1 w - - 1 31 | Rxa5 | Does Black have any passed pawns? | Yes: a5, b7 | structure |
7k/4R2P/6P1/3r1P2/5K2/8/8/8 b - - 14 79 | Rxf5+ | Is the h-file open, semi-open, or closed? | semi-open for Black | files |
r2qkbnr/pbpp1ppp/1p2p1n1/3PP3/2P2P2/2N5/PP4PP/R1BQKBNR w KQkq - 0 9 | a3 | What piece is on a8? | Black Rook | occupancy |
r1bq1k1r/6p1/pn1Np2p/1p2Pp1P/1npP4/6R1/1P1N1PP1/R2QKB2 w Q f6 0 19 | b3 | Does White have any isolated pawns? | Yes: b2 | structure |
r1bqk2r/ppppbppp/2n2n2/6B1/2B4Q/2N2N2/PPP2PPP/R3K2R b KQkq - 6 8 | Nb4 | What piece is on a3? | Empty | occupancy |
7r/1b5r/1QP3k1/2Pp4/P5p1/5q2/2R2PB1/2R3K1 w - - 1 43 | cxb7+ | Are there any open files in this position? | Yes: b, e, h | files |
rnb2rk1/ppppnppp/8/2b1q3/2BPP3/2P5/PP3PPP/RNBQ1RK1 b - - 0 7 | d2d4 | What is the material balance in this position? | Black is up 2 pawns of material | material |
5rk1/Rp3p2/2pp1q1p/2n1b1p1/2P1P3/1P2BP1P/2BQN3/6K1 b - - 0 28 | Qxf3 | Identify any Black knight outposts on the board. | h4 | outposts |
5r1r/ppq1k1p1/4p2p/2N5/1P3P2/2nP1BP1/7P/R1B2RK1 w - - 2 23 | Re1 | Identify any White knight outposts on the board. | e4, e5 | outposts |
r3kb1r/ppq2p1p/4n3/3p1Q2/3P4/2P4P/PP1B2P1/4RRK1 w kq - 3 17 | Qf6 | What piece is on h5? | Empty | occupancy |
6k1/1p4p1/pPp4p/P1Pp4/3P1q2/3QnB2/4K3/R7 b - - 3 37 | Nf5 | Is the move from c6 to b3 legal? | No | legality |
r2qrbk1/1b1n1pp1/5n1p/1ppppN2/1P2P2N/PB1P3P/5PP1/R1BQR1K1 w - - 0 21 | Re3 | Is the White king in check? | No | check |
r2qkbnr/pp1n1pp1/2p1p2p/7P/3P4/3Q1NN1/PPPB1PP1/R3K2R b KQkq - 1 11 | Qc7 | Are there any open files in this position? | No | files |
7Q/2k1r3/5pq1/P6p/5K1P/5B2/6P1/8 b - - 0 44 | Re8 | Is the move from g6 to g4 legal? | Yes | legality |
r6r/p4k2/1qp1bp2/2Qp1n1p/1B6/1PP5/3N1PPP/R4RK1 w - - 2 19 | Ra4 | Is the move from c5 to c6 legal? | Yes | legality |
k7/2p5/PqNp4/1PpPp1p1/2P1Pp1p/1K3PbP/6P1/4Q3 w - - 15 64 | Qg1 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
r3rbk1/8/2p1p1B1/pp1nq1B1/6Q1/P5P1/1PP2PK1/R7 w - - 1 24 | Bxe8 | Does White have any isolated pawns? | No | structure |
8/7p/8/pp6/5p1k/P1p2P1P/3b3K/8 w - - 0 47 | c4c3 | What is the material balance in this position? | Black is up 5 pawns of material | material |
r1bqk2r/pppp1ppp/2n5/2bN4/4n3/2p2N2/PP2BPPP/R1BQ1RK1 w kq - 0 9 | Bd3 | Is the e-file open, semi-open, or closed? | open | files |
B3n1k1/p5r1/2Np4/3Pp2p/1P2Pp2/2N2Ppq/2R3n1/5RK1 w - - 0 31 | Rxg2 | Is the Black king in check? | No | check |
6rk/3q4/p2p1Q2/8/4P3/8/P5PP/3R2K1 b - - 3 30 | g6f6 | Identify any White knight outposts on the board. | d5, f5 | outposts |
3rr1k1/pbq1bp1p/6p1/2ppN3/N3n3/1P2PP2/PB2Q1PP/2RR2K1 b - - 0 20 | Nf6 | Identify any White knight outposts on the board. | a4 | outposts |
2rqk2r/1b1n1ppp/pp1bp3/3pN3/2pPnP2/2N1PB2/PPPB2PP/1R1Q1RK1 w k - 4 13 | Nxe4 | Are there any open files in this position? | No | files |
Bk6/1P6/8/2P5/P2P4/8/3KP3/1R4N1 b - - 0 55 | c4c5 | What is the material balance in this position? | White is up 16 pawns of material | material |
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