fen stringlengths 28 76 | move stringlengths 2 7 | question stringlengths 20 48 | answer stringlengths 2 34 | task_type stringclasses 7
values |
|---|---|---|---|---|
rn1q1rk1/3b1ppp/p2p1b2/P1pPp3/2B1P2P/1P3P2/3B4/RN1QK1NR b KQ - 0 15 | a4a5 | What is the material balance in this position? | White is up 2 pawns of material | material |
3rr2k/4N2p/pp1P1bp1/2p2p1q/2P5/1P1RB3/1P4Q1/5RK1 w - - 6 32 | Bf4 | Is the move from d6 to f4 legal? | No | legality |
1n3r1k/4rppp/3q4/1QRBp3/PP1p4/3R2P1/4PP1P/6K1 w - - 1 27 | e3 | Identify any White knight outposts on the board. | a5, b5, c5 | outposts |
1rk2qnr/1p1b3p/1Qpp1pp1/5P2/3PP3/3B1N2/P5PP/1R2R1K1 w - - 6 25 | Ba6 | Is the move from b1 to a1 legal? | Yes | legality |
r1bqkb1r/1p3pp1/pn2p2p/2pnP3/3PN3/3B1N2/PPP3PP/R1BQ1RK1 b kq - 1 11 | cxd4 | Does Black have any isolated pawns? | No | structure |
8/5p1p/2kp2p1/pRp1p3/2b2b2/P4P2/7P/3R2K1 w - - 0 34 | Rxa5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r3kb1r/1p3ppp/p1b1p3/q3B2Q/2p1P3/2N5/PPP2PPP/R4RK1 w kq - 2 14 | Qg5 | Does Black have any isolated pawns? | No | structure |
rn1qkb1r/pbpp1ppp/1p2pn2/8/2PP4/P1N2N2/1P2PPPP/R1BQKB1R b KQkq - 2 5 | d5 | Is the move from g7 to g6 legal? | Yes | legality |
r4rk1/5ppp/p3nb2/3qp3/8/P2PBN1P/1PR2PP1/3Q1RK1 b - - 2 20 | Rab8 | Are there any open files in this position? | Yes: c | files |
8/7p/1pk3p1/2p1p3/p1P1PpPP/P1K2P2/3r4/8 w - - 0 51 | Kxd2 | Identify any White knight outposts on the board. | None | outposts |
6rk/R3N1p1/5p1p/7P/3P4/p1P3Q1/5PPK/1bq5 b - - 1 40 | Rf8 | What piece is on g3? | White Queen | occupancy |
6k1/p4p1p/3p1pp1/8/4P3/2r4P/PP3PP1/5K2 w - - 0 26 | bxc3 | Identify any Black knight outposts on the board. | None | outposts |
r4rk1/pp3pp1/2p5/3n1RP1/8/1BP1PR2/P1K5/8 w - - 1 26 | e4 | What piece is on f7? | Black Pawn | occupancy |
r1bqk2r/pp2bp1p/2p2np1/3p2B1/3P4/2NQ2N1/PPP2PPP/R4RK1 w kq - 0 11 | Rae1 | What piece is on g7? | Empty | occupancy |
r3kb1r/pp1npppp/2p5/7q/2P5/5N2/PP1BQPPP/2KR3R b kq - 2 13 | e5 | Is the move from h5 to h2 legal? | Yes | legality |
r4rk1/ppqn1p2/2p1RQp1/6Np/2BP4/8/P1P2PPP/6K1 w - - 1 21 | Qxg6+ | Identify any White knight outposts on the board. | None | outposts |
2r3k1/1nqbbppp/3p1n2/1p1Pp3/1P2P3/3BBN1P/3Q1PP1/R4NK1 b - - 0 22 | Qc3 | Is the a-file open, semi-open, or closed? | open | files |
r3k2r/1q1bbppp/p3p3/1p6/4N3/1B5P/PP1Q1PP1/R2R2K1 b kq - 3 18 | Bc6 | What piece is on f1? | Empty | occupancy |
4Q3/pp2r1pk/r1n1p2p/q2p3P/b1pP1PP1/2P5/2PKB3/R1B4R w - - 5 28 | Qg6+ | Identify any Black knight outposts on the board. | None | outposts |
r7/P3kp2/R6P/2NPbp2/4p2P/8/4K3/8 w - - 3 50 | h7 | What piece is on c5? | White Knight | occupancy |
1rbq1rk1/1p2bppp/p3pn2/4N1B1/Pn1P4/1BN2Q2/1P3PPP/R3R1K1 b - - 8 15 | Nfd5 | What is the material balance in this position? | Equal | material |
r2q1rk1/2p1bppp/p7/np1pp3/3Pn3/P4N2/NPP2PPP/R1B1QRK1 w - - 0 14 | Qxa5 | Is the e-file open, semi-open, or closed? | semi-open for White | files |
r2qkb1r/pp3ppb/2n1p3/3pP2N/Q5PP/8/PPP2P2/R1B1KB1R w KQkq - 3 14 | Bg5 | Are there any open files in this position? | No | files |
br1n4/2k1ppbp/3p2p1/p1p5/1P3P2/P1P1B3/4BP1P/1RR3K1 b - - 0 21 | Be4 | What piece is on b4? | White Pawn | occupancy |
r2qr1k1/pn1b2pp/2p2p2/3pB3/8/bP3N2/P1PNQPPP/R3R1K1 w - - 0 17 | Qa6 | Does White have any passed pawns? | No | structure |
r6k/pp6/3p1n1b/3Pp1Bp/4P1n1/1P1N2N1/1P4P1/2R3K1 w - - 2 28 | Bxf6+ | Is the a-file open, semi-open, or closed? | semi-open for White | files |
r7/1bb1q1p1/p1kp4/1p4P1/P2QPpBP/2N5/1PP5/2K2R2 w - - 4 32 | Nd5 | Is the move from b2 to e7 legal? | No | legality |
8/3b4/6K1/1k6/5P2/P5pp/7r/4B1R1 b - - 1 34 | Rg2 | What is the material balance in this position? | Equal | material |
8/8/7N/6p1/4p3/2bkP1pP/6P1/3K4 b - - 15 89 | Kxe3 | Identify any White knight outposts on the board. | g4 | outposts |
2kr3r/ppp1qppp/2p5/2b2b2/2P1pPn1/1P2P3/PBQPB1PP/RN2K2R w KQ - 1 11 | g3 | Are there any open files in this position? | No | files |
r2qkb1r/pp2pppp/2p1n3/3nN3/2Q5/8/PPP2PPP/RNBR2K1 w kq - 0 11 | Nc3 | Is the move from g1 to h1 legal? | Yes | legality |
r1bqkbnr/pp1p1ppp/4p3/2p5/3nP3/6P1/PPPPQPBP/RNB1K1NR w KQkq - 3 5 | Qd3 | Is the c-file open, semi-open, or closed? | closed | files |
1r1r2k1/5p2/6p1/2qpR2p/P4P2/2P5/P2Q2PP/4R2K b - - 0 32 | Rbc8 | Does White have any passed pawns? | Yes: a2, a4 | structure |
rnbq1r1k/pp5p/2P2p2/2b3B1/2B5/2NP1N2/PPP1Q1PP/R3K2n w Q - 0 13 | c7 | Is the move from g2 to g7 legal? | No | legality |
8/1r4k1/5pPp/4p2P/P3P1P1/1P2R3/3q4/1K4Q1 b - - 11 48 | Rc7 | Is the move from d2 to h2 legal? | Yes | legality |
2k1r3/1p1r2pp/8/p2nB3/P1pP3R/2P2bP1/1PB1p2P/2K1R3 b - - 5 31 | g5 | Identify any Black knight outposts on the board. | None | outposts |
1r3r2/2p4k/3p2pq/1NnPp2p/p1P1P3/P5PB/1P2QP2/6RK b - - 0 30 | Rf7 | Are there any open files in this position? | No | files |
r1b2rk1/pp1nb1pp/1qn1pp2/2ppP3/3P1P1P/P1P2N2/1P2N1P1/R1BQKB1R w KQ - 1 11 | Rh3 | What is the material balance in this position? | Equal | material |
r1r3k1/ppq4p/4bp1Q/7p/4N3/3B1P2/PPP5/1K1R4 w - - 0 23 | Rg1+ | Does Black have any isolated pawns? | Yes: f6, h5, h7 | structure |
r3rbk1/1b3pp1/p6p/4p3/R2pP2q/2P2R1P/1PB1QPP1/2B3K1 b - - 0 25 | Rad8 | Is the b-file open, semi-open, or closed? | semi-open for Black | files |
rnbqk1nr/ppp1ppbp/3p2p1/8/3P1B2/2N1P3/PPP2PPP/R2QKBNR b KQkq - 0 4 | e5 | What piece is on a7? | Black Pawn | occupancy |
8/5p2/8/8/5K2/5P2/8/7k w - - 0 65 | Kg3 | Identify any White knight outposts on the board. | None | outposts |
r1b1kb1r/ppp2ppp/2n5/3q4/3pn3/5N2/PPP2PPP/RNBQR1K1 w kq - 0 8 | Nc3 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1bqkb1r/pp2pppp/2np1n2/2p5/4P3/2P2N1P/PP1P1PP1/RNBQKB1R w KQkq - 1 5 | Bd3 | What piece is on f2? | White Pawn | occupancy |
1k4r1/1pp1p3/p3p3/8/6K1/2Q1P1P1/PP5q/8 w - - 2 32 | f8g8 | Is the White king in check? | Yes | check |
3r1b2/2R1prkp/pp4p1/3PpqN1/7P/1Q3P2/PP3PK1/4R3 b - - 1 28 | Rf6 | What is the material balance in this position? | Equal | material |
3r3r/ppk3pp/3b1p2/2q5/P2Q4/4B1P1/5PBP/5RK1 w - - 0 24 | Rc1 | What piece is on e7? | Empty | occupancy |
r2qr1k1/1p2b3/p1n1pn1Q/3p4/3P4/2NB1N1P/PP3PP1/R5K1 w - - 0 18 | Ng5 | What piece is on a6? | Black Pawn | occupancy |
r3r1k1/p2q2pp/1pP2p2/3b4/3Nn3/1Q5P/PB3PP1/R3R1K1 b - - 0 25 | Qf7 | Is the move from d7 to d6 legal? | Yes | legality |
3r1rk1/pp1q1ppp/1bp3n1/7R/3Pp3/P2QBPP1/BP3PK1/3R4 w - - 0 21 | fxe4 | What piece is on g6? | Black Knight | occupancy |
r1b3k1/pppp1pp1/3P4/2b1r1Q1/2B5/2P5/P2K1PP1/R1B4R b - - 0 18 | Rxg5 | Does White have any passed pawns? | No | structure |
1r6/3kb2p/5p2/1r1b2p1/p2P4/3NB3/PP2RPPP/R5K1 w - - 2 26 | Rd1 | Does Black have any passed pawns? | No | structure |
r4rk1/2p3pp/3p1nq1/1P1Ppn2/1p2Np1b/1BPP1P2/3BQ1PP/R4RK1 b - - 1 24 | Rfb8 | Identify any White knight outposts on the board. | a6 | outposts |
2rq1rk1/1p3pp1/2n1p3/pN2NnPb/Pb1PB2P/3Q2B1/1P6/R4RK1 w - - 7 26 | Bxf5 | Identify any Black knight outposts on the board. | d5 | outposts |
5rk1/4npp1/1p1q3p/p2pN2P/P2P4/5QP1/1P3PK1/2R5 b - - 1 28 | f6 | Are there any open files in this position? | Yes: c, e | files |
r1b2rk1/3nqppp/2p1p3/p2nP3/1ppPN3/5NP1/PPQ2PBP/R4RK1 w - - 0 14 | Nfd2 | Identify any Black knight outposts on the board. | d3 | outposts |
br3rk1/2qn1pbp/p2pp1p1/N1p3B1/2PnP3/R1NP4/1P1Q1PPP/R2B2K1 b - - 2 20 | f5 | What is the material balance in this position? | Equal | material |
r1bq3r/1p3pk1/5pp1/p1nN4/2P4p/3B3P/PP1Q1PP1/3RR1K1 w - - 0 20 | Bxg6 | Are there any open files in this position? | Yes: d, e | files |
r2qk2r/pp1nppbp/6p1/1Q1P4/8/2N2P2/PP3P1P/R1B2RK1 w kq - 2 15 | Bg5 | Does White have any isolated pawns? | Yes: d5, f2, f3, h2 | structure |
3kr3/8/2n1Q3/7P/1bB4p/8/3N4/2B1K2R b K - 4 28 | Rxe6+ | Is the Black king in check? | No | check |
r1b2rk1/1p2bppp/n3pn2/p1Pq4/8/3B1N2/PPPNQPPP/R1B2RK1 w - - 0 10 | Ne4 | What piece is on f4? | Empty | occupancy |
8/ppp3pp/8/3k4/6P1/2PK4/P1P4P/8 b - - 3 27 | b5 | Identify any Black knight outposts on the board. | None | outposts |
3r4/6R1/8/8/8/8/2K4p/7k b - - 1 51 | Ra8 | What piece is on g7? | White Rook | occupancy |
rB1R4/pR3ppk/5n1p/r7/8/6P1/5P1P/6K1 b - - 0 27 | Kg6 | Does Black have any isolated pawns? | Yes: a7 | structure |
5rk1/6p1/7p/1P1pP1P1/1RnP3q/3Q4/6K1/5R2 b - - 6 50 | Qxg5+ | Is the a-file open, semi-open, or closed? | open | files |
r1bqk2r/1pp2ppp/2np1n2/p1b1p3/2B1P3/2PP1N1P/PP3PP1/RNBQ1RK1 b kq - 0 7 | Ba7 | Are there any open files in this position? | No | files |
8/1p1k3p/1R1p1pp1/2nP4/5PPP/rB2K3/P7/8 w - - 2 39 | Rb4 | Is the c-file open, semi-open, or closed? | open | files |
r1bqkbnr/ppp2ppp/2Bp4/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4 | b5c6 | Is the Black king in check? | Yes | check |
2r2r1k/p3q2p/1pnp1b2/2pBp3/1PN1Ppb1/PQPP1N2/1R4PP/5RK1 b - - 3 23 | Nd8 | What piece is on d4? | Empty | occupancy |
r7/p1Rkbppp/5n2/3p4/3P1B2/8/PP3PPP/5RK1 b - - 1 18 | c1c7 | Is the Black king in check? | Yes | check |
r2rn1k1/1bq2pbp/2p2n2/1pP2N2/1P6/1Q3B1P/1B3PP1/2R1R1K1 b - - 0 26 | Rd7 | Is the move from d8 to h3 legal? | No | legality |
r1bq1rk1/pp2bppn/2p1p2p/4N3/3P2R1/2P3P1/PP3PBP/R1BQ2K1 b - - 6 14 | Nf6 | Is the move from e7 to h5 legal? | No | legality |
r1bqkbnr/pp1p1ppp/2n5/2p1p3/2P1P3/2N3P1/PP1P1P1P/R1BQKBNR b KQkq - 0 4 | h5 | Is the move from e5 to f3 legal? | No | legality |
r3r1kb/1p3p1p/1qpp1npB/p1nP4/2P5/2N2P2/PP1QB1PP/4RR1K b - - 3 19 | Qb4 | Is the e-file open, semi-open, or closed? | open | files |
1n6/pP6/4k1p1/1BKp4/6PP/4P3/8/8 w - - 2 49 | h5 | Is the move from e3 to e4 legal? | Yes | legality |
1r4k1/8/1p6/p1p1bP1q/2P5/P2P1p2/3Q1K2/1R4R1 b - - 2 34 | Kf7 | What piece is on d6? | Empty | occupancy |
6k1/1pp1pp1p/4b1pB/3r4/r2NK3/2R1P3/2P3PP/4R3 b - - 16 28 | c5 | Does White have any passed pawns? | No | structure |
8/8/3p3p/1ppPk1p1/6P1/PbP1K2P/4B3/8 b - - 3 54 | Bc4 | What piece is on e2? | White Bishop | occupancy |
7r/8/1k1nbppb/p1p1p2p/4P3/P3NP2/1P2B1PP/3RBK2 b - - 3 30 | Kc6 | Identify any White knight outposts on the board. | None | outposts |
r1bqk2r/pppp1p2/5n1p/4p3/2BnPP1p/8/PPP3PP/RN1Q1RK1 w kq - 0 10 | fxe5 | Does Black have any isolated pawns? | Yes: h4, h6 | structure |
r1b1R3/6pk/2p1p1rp/1pP1P3/1P2pP2/p3P2P/P5P1/3R2K1 w - - 0 26 | Rdd8 | What piece is on e4? | Black Pawn | occupancy |
r4qk1/1pr1ppb1/3p4/p1nP1P2/2P5/1P2B2B/P1RQ4/4R1K1 b - - 0 28 | f6 | What piece is on g6? | Empty | occupancy |
4r1k1/2p3pp/p4r2/1p1p4/8/2PB3b/PP1N1B1P/R5K1 b - - 5 22 | h5 | What piece is on g8? | Black King | occupancy |
8/6kp/1R1p4/3P4/6Pn/7r/1PK5/8 b - - 1 48 | Ng2 | Is the White king in check? | No | check |
8/R4pk1/6p1/6P1/8/1r2P1K1/5P2/8 b - - 2 35 | Rc3 | What piece is on d4? | Empty | occupancy |
r1bqk2r/pppp1ppp/2n2n2/4p3/1b2P3/2N2N1P/PPPP1PP1/R1BQKB1R w KQkq - 1 5 | a3 | Identify any White knight outposts on the board. | None | outposts |
8/pB3p1k/6p1/2P1r2p/6b1/6P1/P4RP1/2Rr2K1 w - - 4 30 | d4d1 | Is the White king in check? | Yes | check |
8/5k1p/1R6/6p1/P1P5/1P4P1/2n1P2P/6K1 w - - 0 33 | g7g5 | What is the material balance in this position? | White is up 6 pawns of material | material |
2r1k3/7p/p2Qppr1/2n2p1B/1pP5/6P1/Pq3P1P/3RR1K1 w - - 2 27 | Bxg6+ | Identify any Black knight outposts on the board. | a3, c3 | outposts |
2r3k1/B6p/1p1p2p1/3Pbb2/2r2p2/PqN2P1P/1P2Q1BK/R1R5 w - - 0 26 | a4 | What piece is on c4? | Black Rook | occupancy |
r3r1k1/p4ppp/7n/8/8/5KP1/PPPQ1P2/RN5q w - - 8 27 | c1h1 | Is the White king in check? | Yes | check |
5rk1/1b2bppp/pq1pp3/6P1/1p1NPP1P/2r3N1/PPPQ4/1K1R2R1 b - - 4 22 | Rxg3 | Is the d-file open, semi-open, or closed? | semi-open for White | files |
r1bq1rk1/p1pp1ppp/2p2n2/8/1b2P3/2NB4/PPP2PPP/R1BQ1RK1 b - - 3 8 | Re8 | What is the material balance in this position? | Equal | material |
6k1/6bp/r1qn1pp1/3p4/1p1PpP2/1P2P1P1/1B3N1P/1Q2R1K1 w - - 0 31 | Rc1 | Identify any White knight outposts on the board. | None | outposts |
5rk1/1q1brpnp/p1n3pB/1p2p3/2p1P2Q/2P2N1P/PPB2PP1/2R1R1K1 w - - 4 24 | Be3 | Is the d-file open, semi-open, or closed? | open | files |
rnbqkbnr/pp2pppp/2p5/8/3P4/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 1 5 | Bf5 | Identify any Black knight outposts on the board. | None | outposts |
br2r1k1/2b1qppp/pp1ppnn1/8/PPP1PP1P/2N1NBP1/1B3Q2/3R1R1K b - - 0 24 | a5 | What is the material balance in this position? | Equal | material |
8/pp3pk1/2p2pp1/3p2b1/3P2P1/1PP1PQ2/P2N1P2/2q2K2 w - - 5 27 | a3c1 | Is the White king in check? | Yes | check |
r1r3k1/1bq2pp1/pp1p3p/4p1bn/P2nP3/2N2P2/BPPN1BPP/2RR1QK1 b - - 6 22 | b5 | What piece is on e5? | Black Pawn | occupancy |
r3k1nr/pp1qbpp1/3p3p/2p1pP2/3nP1P1/2NPBN2/PPP4P/R2Q1RK1 w kq - 0 13 | Nd5 | Identify any White knight outposts on the board. | None | outposts |
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