fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
2r2rk1/4Rp1p/6p1/2pQP3/5P2/pP2B3/Pq4PP/2R4K b - - 0 29 | Qxa2 | What is the material balance in this position? | White is up 4 pawns of material | material |
r1b3k1/ppp1bp1p/4p1pB/2qn4/2N1B3/5QP1/PP2PP1P/3R2K1 b - - 11 22 | c6 | What is the material balance in this position? | Black is up 1 pawn of material | material |
1k1r2r1/ppqbnp2/2n1p2P/4P3/3p1P2/P1pQ4/2P1N1P1/R1B1KB1R w KQ - 1 16 | h7 | What piece is on f7? | Black Pawn | occupancy |
r1bqkb1r/pp1npppp/5n2/3P4/Q7/2N5/PP1P1PPP/R1B1KBNR b KQkq - 4 6 | a6 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
5k2/4P1p1/7p/5p1P/2r2B2/1b4P1/2p2P2/4R1K1 b - - 0 39 | e6e7 | Is the Black king in check? | Yes | check |
3q1rbk/6b1/7p/Pr1p1p2/4pP1P/2P4N/BP1Q2P1/R4RK1 b - - 0 26 | Rxa5 | Identify any White knight outposts on the board. | b4, b6 | outposts |
q4rk1/p1p1bppp/4p3/3bP3/3PNn2/P4N2/2QR1PPP/1R4K1 w - - 4 22 | Re1 | What piece is on c7? | Black Pawn | occupancy |
r1bq1rk1/4bppp/p3pn2/8/N2pPB2/3B4/PP3PPP/2RQ1RK1 w - - 4 14 | Bc7 | Is the move from d3 to f5 legal? | No | legality |
r2q1rk1/1p1bn2p/2n1pbp1/pNPp4/P7/2P2N2/1PB2PPP/R1BQR1K1 b - - 1 15 | e5 | Is the move from f6 to d8 legal? | No | legality |
r5k1/pp2p1b1/2p3Qp/4P3/4Nr2/4q1PP/PP4K1/5R2 w - - 0 32 | Rxf4 | Does Black have any passed pawns? | No | structure |
r1bqkr2/ppppbp1Q/8/8/1n2n3/5N2/PPPP1PPP/RNB1KB1R w KQq - 1 8 | c6b4 | What is the material balance in this position? | White is up 2 pawns of material | material |
rn1q1rk1/p4pbp/4p1p1/2BpPn2/P4P2/1PP3PP/4Q1B1/RN3RK1 b - - 0 13 | Nxg3 | What piece is on f7? | Black Pawn | occupancy |
B4rk1/2q2ppp/b3pn2/p1P3N1/1pp5/6P1/PPQ2P1P/3RR1K1 b - - 0 21 | Rxa8 | Does Black have any passed pawns? | No | structure |
1rb2rk1/p5pp/4pb2/2q2p2/7P/1B3N2/PPP1QPP1/2KR3R b - - 4 20 | a5 | What is the material balance in this position? | White is up 1 pawn of material | material |
4k2r/4bpp1/p3b2p/1p1np3/6PP/P1P2P2/2PB4/1K1R1B1R b k - 1 20 | Nb6 | Identify any White knight outposts on the board. | None | outposts |
2k3nr/B1p2ppp/2pp1q2/8/4r3/2N2Q2/PPP2PPP/R3KR2 w Q - 0 13 | e8e4 | Is the White king in check? | Yes | check |
r2qkbnr/1b1p1ppp/p1n1p3/8/Pp2P3/1BN2N2/1P3PPP/R1BQ1RK1 w kq - 0 10 | Nd5 | What piece is on f3? | White Knight | occupancy |
6k1/5ppp/1p2p3/2b1P3/8/2N2P2/PP3P1P/3r2K1 w - - 0 22 | d8d1 | Is the Black king in check? | No | check |
2kr2nr/pppq1p2/2np1B1p/8/4P3/2P2NQ1/P2N1PPP/R4RK1 b - - 0 16 | Nxf6 | Identify any White knight outposts on the board. | f5 | outposts |
r2qr1k1/5ppp/p4n2/1pbP1bB1/1n6/N1N2B2/PP1Q1PPP/3R1RK1 b - - 1 16 | Nd3 | What is the material balance in this position? | White is up 1 pawn of material | material |
8/5K2/6p1/5pkn/R6p/7P/6P1/8 b - - 47 69 | Kh6 | Does White have any passed pawns? | No | structure |
r1bq1rk1/1n2b2p/p2p2p1/3Ppp2/RP2P3/5N1P/3NQPP1/2B1R1K1 b - - 0 19 | a5 | Is the move from d8 to b2 legal? | No | legality |
2kr4/ppb5/1qb1p1p1/8/2NP2Q1/P7/6PP/R3K2R b KQ - 5 23 | Qb3 | Identify any White knight outposts on the board. | e5 | outposts |
rnbqkb1r/ppp1pp1p/5np1/3p4/5P2/4PN2/PPPP2PP/RNBQKB1R w KQkq - 0 4 | b4 | Does Black have any passed pawns? | No | structure |
r2r2k1/pbq2pbp/1pn1p1p1/2p5/2BPPP2/2P1B2P/P3N1P1/2R1QRK1 w - - 2 15 | Qf2 | Is the b-file open, semi-open, or closed? | semi-open for White | files |
r1bq1bk1/p4p1p/2p2np1/4p3/3pP1P1/2N2P2/PPPQ3P/1K1R1B1R w - - 0 15 | Na4 | Identify any Black knight outposts on the board. | None | outposts |
4r1k1/p2nqpb1/3p4/3P1P1p/Pp4pP/3Q2P1/4P1B1/2R1R1K1 b - - 0 28 | Nc5 | Identify any White knight outposts on the board. | None | outposts |
3q1rk1/r2nppbp/n2p2p1/2pP4/P3P3/2N2N2/1P3PPP/R1BQ1RK1 w - - 2 13 | Rb1 | Are there any open files in this position? | No | files |
r5r1/pbpkb2p/1p2p1q1/3pP3/5R2/3P1NB1/PPQ3PP/R5K1 w - - 13 23 | Rc1 | Is the Black king in check? | No | check |
rnb1kb1r/pp3pp1/2p1pq1p/3p4/2PP4/2N2N2/PP2PPPP/R2QKB1R w KQkq - 0 7 | Qb3 | Are there any open files in this position? | No | files |
r1bq1rk1/pp1Nbpp1/2p1p2p/8/3P3R/2P3P1/PP3PBP/R1BQ2K1 b - - 0 14 | Bxh4 | Is the move from a8 to b1 legal? | No | legality |
2n1r1nr/1kqb4/1p3p2/1P1p3p/2PB4/3B4/6QP/R4R1K w - - 1 28 | Qa2 | What piece is on e7? | Empty | occupancy |
r1b1k2r/ppp1npp1/3p1q2/1Nb1n3/3NP2p/2P1B1P1/PP3PBP/R2Q1RK1 b kq - 1 11 | Bb6 | Is the move from f6 to h6 legal? | Yes | legality |
2kr3r/1p6/p1n1p3/3nB3/2R2PP1/3B1QKP/q7/1R6 w - - 3 40 | Rxc6+ | What is the material balance in this position? | Equal | material |
8/8/8/8/2N1Bk2/1PK5/7p/5r2 w - - 3 52 | Nd2 | Is the move from e4 to d3 legal? | Yes | legality |
r2q1rk1/2p1bppp/p2p1n2/np2p3/3PP3/P1N2N2/RPP2PPP/2BQ1RK1 b - - 0 12 | Re8 | Is the move from d8 to e2 legal? | No | legality |
r3k2r/1p1b1ppp/8/3pN3/p7/P3P3/1Pq2PPP/2R2RK1 w kq - 0 20 | Rxc2 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
5q2/2P1n3/8/PpKpP3/8/8/6k1/8 b - - 1 54 | Qc8 | What is the material balance in this position? | Black is up 11 pawns of material | material |
r1bqkb1r/pppn1ppp/3p1n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 2 5 | g4 | Are there any open files in this position? | No | files |
1r4qr/8/kn4n1/pp1pP3/b1pP1P1p/P1P1NQ2/R1P3PB/5RK1 b - - 1 35 | h3 | Does Black have any isolated pawns? | Yes: h4 | structure |
rn1qkb1r/p4pp1/4pnp1/1Ppp4/3P4/1QN1PP2/PP4PP/R1B1KB1R w KQkq - 0 11 | g3 | Identify any White knight outposts on the board. | a6, c6 | outposts |
8/k7/6p1/p4p1p/b1NKp2P/3nP1P1/4BP2/8 b - - 15 81 | Nc1 | Identify any Black knight outposts on the board. | b4 | outposts |
5nk1/3bbrpp/pq2p3/3pPp2/P2P4/2BBP3/3NQ1PP/R5K1 b - - 4 26 | Qc7 | Is the f-file open, semi-open, or closed? | semi-open for White | files |
r1bqk2r/1p2bppp/p1npp3/7n/2B1P3/2N1BN2/PP2QPPP/R2R2K1 b kq - 5 11 | Bd7 | Does Black have any isolated pawns? | No | structure |
r4r2/1bpR1pkp/1pq1p1p1/p3P3/P1P4Q/5N1P/2P2PP1/3R2K1 w - - 0 28 | R1d4 | Does Black have any isolated pawns? | No | structure |
r5k1/1br1qpp1/p2p1n1p/2pPn3/7B/P1NBP3/5PPP/2RQR1K1 w - - 1 22 | Bc2 | Are there any open files in this position? | Yes: b | files |
r2qr1k1/ppp2p1p/8/3pPb2/4n1p1/P3P1B1/1PQ2PPP/R3KB1R w KQ - 1 15 | Bd3 | Does White have any passed pawns? | No | structure |
rnbqkb1r/pp2pppp/2p2n2/3p4/2P5/5NP1/PP1PPPBP/RNBQK2R b KQkq - 2 4 | dxc4 | Is the move from b8 to b1 legal? | No | legality |
2r5/4bp2/p3pn1k/3p2pP/Np1PP3/1P1K1P1P/1Pr2B2/5RR1 w - - 1 35 | Be3 | Does Black have any isolated pawns? | No | structure |
Q1bq2k1/p2p1ppp/1p1p4/8/8/8/PbP2PPP/RN3BK1 b - - 0 16 | Qf8 | Is the move from c8 to c1 legal? | No | legality |
2r2r1k/3b1ppq/1p1p1n1n/p1pP3p/P1P1pP2/2P1P1PP/3N3K/R1B1QBR1 b - - 2 23 | Rg8 | Is the move from f6 to e1 legal? | No | legality |
3r1rk1/1pp3p1/1n3p1p/p2P4/2PbPP2/1P5P/P5P1/3RR1K1 w - - 0 22 | c5d4 | Is the White king in check? | Yes | check |
2rk1q2/pn1Q2p1/1p5p/4P3/1P5P/6B1/5PP1/3R2K1 b - - 0 35 | b5d7 | Is the Black king in check? | Yes | check |
r2q1rk1/pp1n1ppp/2p1pn2/6B1/1b1P3Q/2NB3P/PPP3P1/R4RK1 b - - 7 12 | h5 | What piece is on g4? | Empty | occupancy |
1q3rk1/Rp3pbp/2p3p1/1Pnp4/3Pp3/2B1P1P1/Q3BP1P/6K1 w - - 0 23 | Bb4 | Is the move from a2 to e8 legal? | No | legality |
r3q2k/p1pn3p/bp6/3Q4/3P4/5RR1/PP4PP/6K1 w - - 5 27 | h3 | Identify any White knight outposts on the board. | e5 | outposts |
6k1/7p/8/8/1R4p1/1P6/P1P4r/3K4 b - - 1 30 | b6b4 | What is the material balance in this position? | White is up 1 pawn of material | material |
4k3/8/3KP3/8/8/8/8/8 b - - 1 1 | Kd8 | Is the move from e8 to b2 legal? | No | legality |
2r2rk1/7p/p2p2pb/1p1P1b2/4B3/N4P2/PP1KR1PP/1R6 w - - 5 22 | Kd3 | Are there any open files in this position? | Yes: c, e | files |
1r2k2r/4n3/Q5pp/2p1b3/3q1p2/1P1P4/P2P1PPP/RNB2RK1 b k - 0 18 | f3 | Does White have any passed pawns? | Yes: a2 | structure |
r5k1/1b4p1/p3q2p/1pp2p2/1P3B2/1P1P1P1P/1P4P1/R2Q2K1 b - - 0 24 | cxb4 | Does Black have any isolated pawns? | No | structure |
r2qkb1r/pp1bpppp/2np1n2/1Bp5/3PP3/2P2N2/PP3PPP/RNBQ1RK1 b kq - 0 6 | a6 | Identify any Black knight outposts on the board. | None | outposts |
r3k1r1/1p5p/p1n1p3/5p2/1B1Pp3/P3K1P1/5P1P/2R4R w q - 0 22 | Rhd1 | What piece is on b2? | Empty | occupancy |
r4rk1/pb2qpp1/1p2p2p/2ppP3/3P4/2PBP3/PP1Q2PP/R4RK1 w - - 0 15 | Rf4 | What piece is on e6? | Black Pawn | occupancy |
1r6/3k4/2p5/p1Pp3p/P2b1p1p/3N1P2/1PK3P1/1R6 w - - 0 35 | Nxf4 | What piece is on c5? | White Pawn | occupancy |
8/4kp1p/1pK3p1/p3P3/P5P1/1P1r3P/8/2R5 w - - 3 44 | Rb1 | Is the move from g4 to e6 legal? | No | legality |
1r3rk1/3Q1ppp/p5b1/2p4q/1nB5/P1B3P1/1P1R1P1P/2K1R3 b - - 0 21 | Rbc8 | What piece is on h7? | Black Pawn | occupancy |
2r3k1/p2n2p1/Pr1pp2p/Rp2p3/1PP1P3/1R1P1N1P/3Nn1PK/8 w - - 11 27 | Rb1 | Identify any White knight outposts on the board. | None | outposts |
r4rk1/pb2bppp/1pq1pn2/2ppB3/5P2/1P1BP1N1/P1PP2PP/R2Q1RK1 w - - 1 13 | Qe2 | Are there any open files in this position? | No | files |
r1b1kb1r/2qn1ppp/p2ppn2/1p6/3NPPP1/2N5/PPP1B2P/R1BQ1RK1 w kq - 0 10 | a3 | Does Black have any passed pawns? | No | structure |
5rk1/1ppn1pp1/p6p/n1p1p3/2P1P3/1PNN4/2P2PPP/3R2K1 w - - 2 17 | Nd5 | What piece is on c1? | Empty | occupancy |
8/5R2/8/3Kp3/1b4k1/8/8/8 w - - 7 57 | Kxe5 | Does Black have any passed pawns? | Yes: e5 | structure |
7r/rp2k2p/pp1p1npB/3Bp3/P3P3/3P4/1PP2PPP/R4RK1 w - - 3 17 | d7f6 | What is the material balance in this position? | White is up 4 pawns of material | material |
3r1r2/pbkp3p/n1pN3q/1p2P3/1P2Q3/P1N2BP1/2P4P/3R1RK1 w - - 5 28 | e6h6 | What is the material balance in this position? | White is up 4 pawns of material | material |
8/5k2/1p6/p1bp1p2/P1nB2p1/2P3P1/4R1K1/8 b - - 1 41 | Bd6 | Identify any White knight outposts on the board. | d4 | outposts |
8/8/7p/8/7P/R2pk1P1/1K6/7r b - - 7 63 | Ke2 | Is the move from e3 to d7 legal? | No | legality |
3k2r1/ppp1P3/2p5/8/3P1Nr1/PP3K2/2P5/4R3 b - - 0 36 | e6e7 | Is the White king in check? | No | check |
r1bqr1k1/ppp2p1p/2np1p2/7Q/1bP1p3/4PN2/PP1P1PPP/R1B1KB1R w KQ - 0 10 | a3 | Is the move from f3 to f8 legal? | No | legality |
r3rbk1/1bpq1pp1/p1n2n1p/1p1pp3/4P3/PBPP3P/1P3PPN/R1BQRNK1 w - - 0 15 | Ng4 | Does Black have any passed pawns? | No | structure |
8/pp5k/3q1pb1/8/4P2P/5P2/1r2BK2/2Q4R b - - 1 32 | Qe5 | Identify any Black knight outposts on the board. | None | outposts |
5rk1/1bqnbppp/pn1pp3/1p4P1/4P3/2PBBP2/P1P1NQ1P/1K1R3R w - - 1 17 | h4 | Is the move from f2 to f3 legal? | No | legality |
5r1k/6R1/3B1P2/pr4P1/6K1/8/8/8 b - - 1 47 | Rd8 | Identify any Black knight outposts on the board. | b4 | outposts |
r2qk2r/ppp2ppp/1b2bP2/1P6/1np1Q3/2Pp1N2/P4PPP/RNB1K2R w KQkq - 2 12 | O-O | What piece is on h7? | Black Pawn | occupancy |
6k1/8/4P2p/ppb1n1p1/6P1/1P1p3K/P4r1P/R1BR4 b - - 0 32 | Bd4 | Are there any open files in this position? | Yes: c, f | files |
1B6/6pp/1bp1kp2/1p1p3b/1P6/2P2P2/B1P1KP1P/8 b - - 9 35 | g5 | Is the move from d5 to d4 legal? | No | legality |
1r4k1/4ppbp/Q2p2p1/8/4P3/1Pr2P2/1p4PP/1K1R4 b - - 0 28 | Rbc8 | What is the material balance in this position? | Equal | material |
3r2k1/2p2ppp/p1q5/3p1b2/3P4/pPN5/P1PQ1PPP/4R1K1 w - - 2 19 | Re2 | What is the material balance in this position? | Equal | material |
r2rn1k1/3nqp1p/pp2pp2/2p4N/2P1N1P1/P2PP3/1B3Q1P/5RK1 b - - 9 26 | e5 | What is the material balance in this position? | Black is up 3 pawns of material | material |
7k/5p1p/4bb1q/1Q2p2r/8/2P3r1/PP2nPBP/R2RNN1K b - - 0 29 | Bg4 | Does White have any passed pawns? | Yes: a2, b2, c3 | structure |
5rk1/2p1q1p1/brn1p2p/p1Np1p2/P2P1P2/Q1P3P1/4P1BP/R4RK1 w - - 0 21 | Nxa6 | What is the material balance in this position? | Equal | material |
8/2q2p2/4brk1/pBppRprp/P4Q2/1P4PP/2P2P1K/4R3 w - - 19 38 | b7c7 | Identify any White knight outposts on the board. | a4, f4, h4 | outposts |
r1b1k1nr/5ppp/p2Bp3/1p6/3QP3/2PB4/q4PPP/1N3RK1 w kq - 0 15 | Qxg7 | Is the White king in check? | No | check |
8/2bk1pp1/1p6/1P1Pp2p/4P3/4BKP1/7P/8 w - - 0 43 | g4 | Is the move from d5 to a7 legal? | No | legality |
r3k3/pq3p2/1p1r1B1Q/2pPp3/3nP3/P5R1/1P3PPP/4KR2 b - - 0 24 | Qa6 | What piece is on d3? | Empty | occupancy |
2kr3r/pp1b4/1q1bpp1B/1P1p4/3n4/P2B1N2/5PPP/RN1Q1RK1 b - - 0 16 | Nxf3+ | What piece is on c6? | Empty | occupancy |
r1b1k2r/p1qn1pp1/1ppbp2p/8/3P2Q1/3B1N2/PPP2PPP/R1B2RK1 b kq - 1 12 | g5 | Identify any White knight outposts on the board. | None | outposts |
8/8/1p1p4/p1p1p1k1/P1P1P1P1/1P1PKr2/8/5R2 w - - 0 40 | Kxf3 | Identify any White knight outposts on the board. | h5 | outposts |
r2qr1k1/3bbpp1/p2p1n1p/1p1P4/P2NP2B/3B1P2/1P2Q1PP/R4RK1 w - - 0 18 | b7b5 | What is the material balance in this position? | White is up 1 pawn of material | material |
3r2nr/ppp2kpp/4b3/4P3/1R2PB2/2N5/PPP3PP/4K1NR w K - 1 14 | f5e6 | What is the material balance in this position? | White is up 5 pawns of material | material |
2r5/pb1r4/2p2qk1/1PPppp2/PQ4p1/4P1P1/2R2PB1/2R3K1 w - - 1 37 | Qa5 | Is the move from b4 to b1 legal? | Yes | legality |
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