image
imagewidth (px) 240
240
| fen
stringclasses 90
values | task_type
stringclasses 6
values | question
stringlengths 290
476
| answer
stringlengths 2
166
| messages
listlengths 2
2
|
|---|---|---|---|---|---|
2rq1rk1/1p3p1p/p1pn2p1/P2p4/1P1PnP2/3NP3/5PBP/R1Q3RK w - - 2 22
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 2rq1rk1/1p3p1p/p1pn2p1/P2p4/1P1PnP2/3NP3/5PBP/R1Q3RK w - - 2 22
Answer:
|
d3c5
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 2rq1rk1/1p3p1p/p1pn2p1/P2p4/1P1PnP2/3NP3/5PBP/R1Q3RK w - - 2 22\nAnswer:"
},
{
"role": "assistant",
"content": "d3c5"
}
] |
|
3N1r2/6R1/kp6/p2pPp1Q/2pP2P1/2q5/2P5/2K5 w - - 0 38
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3N1r2/6R1/kp6/p2pPp1Q/2pP2P1/2q5/2P5/2K5 w - - 0 38
Output:
|
. . . N . r . .
. . . . . . R .
k p . . . . . .
p . . p P p . Q
. . p P . . P .
. . q . . . . .
. . P . . . . .
. . K . . . . .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3N1r2/6R1/kp6/p2pPp1Q/2pP2P1/2q5/2P5/2K5 w - - 0 38\nOutput:"
},
{
"role": "assistant",
"content": ". . . N . r . .\n. . . . . . R .\nk p . . . . . .\np . . p P p . Q\n. . p P . . P .\n. . q . . . . .\n. . P . . . . .\n. . K . . . . ."
}
] |
|
3rk3/5p1r/p2Np1p1/3bP3/P2n4/8/1P3RPP/5RK1 b - - 4 25
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3rk3/5p1r/p2Np1p1/3bP3/P2n4/8/1P3RPP/5RK1 b - - 4 25
Output:
|
. . . r k . . .
. . . . . p . r
p . . N p . p .
. . . b P . . .
P . . n . . . .
. . . . . . . .
. P . . . R P P
. . . . . R K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3rk3/5p1r/p2Np1p1/3bP3/P2n4/8/1P3RPP/5RK1 b - - 4 25\nOutput:"
},
{
"role": "assistant",
"content": ". . . r k . . .\n. . . . . p . r\np . . N p . p .\n. . . b P . . .\nP . . n . . . .\n. . . . . . . .\n. P . . . R P P\n. . . . . R K ."
}
] |
|
8/6k1/2R4p/5p1P/5P1K/6P1/8/r7 w - - 2 58
|
piece_captures
|
List all captures the piece on c6 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 8/6k1/2R4p/5p1P/5P1K/6P1/8/r7 w - - 2 58
Piece on: c6
Answer:
|
Rxh6
|
[
{
"role": "user",
"content": "List all captures the piece on c6 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 8/6k1/2R4p/5p1P/5P1K/6P1/8/r7 w - - 2 58\nPiece on: c6\nAnswer:"
},
{
"role": "assistant",
"content": "Rxh6"
}
] |
|
1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
|
legal_moves
|
List all legal moves for the piece on g3 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
Piece on: g3
Answer:
|
g4
|
[
{
"role": "user",
"content": "List all legal moves for the piece on g3 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37\nPiece on: g3\nAnswer:"
},
{
"role": "assistant",
"content": "g4"
}
] |
|
8/1p4p1/pb2ppkp/3n4/3P4/P3BN1P/1P2KPP1/8 b - - 0 26
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 8/1p4p1/pb2ppkp/3n4/3P4/P3BN1P/1P2KPP1/8 b - - 0 26
Output:
|
. . . . . . . .
. p . . . . p .
p b . . p p k p
. . . n . . . .
. . . P . . . .
P . . . B N . P
. P . . K P P .
. . . . . . . .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 8/1p4p1/pb2ppkp/3n4/3P4/P3BN1P/1P2KPP1/8 b - - 0 26\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . . .\n. p . . . . p .\np b . . p p k p\n. . . n . . . .\n. . . P . . . .\nP . . . B N . P\n. P . . K P P .\n. . . . . . . ."
}
] |
|
5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33
Answer:
|
White: Ka1, Qg2, Rd4, Re1, Pa2, Pb2, Pc3, Pf2, Ph6
Black: Kf8, Qf5, Rd5, Rd7, Pa7, Pb6, Pe4, Pg6, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33\nAnswer:"
},
{
"role": "assistant",
"content": "White: Ka1, Qg2, Rd4, Re1, Pa2, Pb2, Pc3, Pf2, Ph6\nBlack: Kf8, Qf5, Rd5, Rd7, Pa7, Pb6, Pe4, Pg6, Ph7"
}
] |
|
6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22
Output:
|
. . . . . . k .
. . . b q r . p
. . r p p . p R
p . . . . . . .
P p . Q P . . .
. B . . . P . .
. P P . . . P .
. . K R . . . .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . k .\n. . . b q r . p\n. . r p p . p R\np . . . . . . .\nP p . Q P . . .\n. B . . . P . .\n. P P . . . P .\n. . K R . . . ."
}
] |
|
2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13
Output:
|
. . k r . b . r
p . p . . p p .
. . p q b . . .
. . . . . . . p
. . . N . . n .
. . N P B . . .
P P P . . P P P
R . . Q . R K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13\nOutput:"
},
{
"role": "assistant",
"content": ". . k r . b . r\np . p . . p p .\n. . p q b . . .\n. . . . . . . p\n. . . N . . n .\n. . N P B . . .\nP P P . . P P P\nR . . Q . R K ."
}
] |
|
r4rk1/p3ppbp/Pp1q1np1/3PpbB1/2B5/2N5/1PPQ1PPP/3RR1K1 w - - 4 18
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r4rk1/p3ppbp/Pp1q1np1/3PpbB1/2B5/2N5/1PPQ1PPP/3RR1K1 w - - 4 18
Output:
|
r . . . . r k .
p . . . p p b p
P p . q . n p .
. . . P p b B .
. . B . . . . .
. . N . . . . .
. P P Q . P P P
. . . R R . K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r4rk1/p3ppbp/Pp1q1np1/3PpbB1/2B5/2N5/1PPQ1PPP/3RR1K1 w - - 4 18\nOutput:"
},
{
"role": "assistant",
"content": "r . . . . r k .\np . . . p p b p\nP p . q . n p .\n. . . P p b B .\n. . B . . . . .\n. . N . . . . .\n. P P Q . P P P\n. . . R R . K ."
}
] |
|
r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
Output:
|
r . b . k . n r
p p p . . p b p
. . . p p q p .
. . . . . . . .
. . B n P . . .
N . . P . . Q P
P P P . . P P .
R . B . K . . R
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9\nOutput:"
},
{
"role": "assistant",
"content": "r . b . k . n r\np p p . . p b p\n. . . p p q p .\n. . . . . . . .\n. . B n P . . .\nN . . P . . Q P\nP P P . . P P .\nR . B . K . . R"
}
] |
|
r7/p2k1pp1/p1p1pn2/3p4/3P4/P3PQp1/1PP2P1q/2K4R w - - 0 20
|
legal_moves
|
List all legal moves for the piece on c1 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r7/p2k1pp1/p1p1pn2/3p4/3P4/P3PQp1/1PP2P1q/2K4R w - - 0 20
Piece on: c1
Answer:
|
Kd2, Kd1, Kb1
|
[
{
"role": "user",
"content": "List all legal moves for the piece on c1 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r7/p2k1pp1/p1p1pn2/3p4/3P4/P3PQp1/1PP2P1q/2K4R w - - 0 20\nPiece on: c1\nAnswer:"
},
{
"role": "assistant",
"content": "Kd2, Kd1, Kb1"
}
] |
|
3r3r/pQNk1ppp/1qnb1n2/1B6/8/8/PPP3PP/3R1R1K w - - 5 19
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 3r3r/pQNk1ppp/1qnb1n2/1B6/8/8/PPP3PP/3R1R1K w - - 5 19
Answer:
|
d1d6
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 3r3r/pQNk1ppp/1qnb1n2/1B6/8/8/PPP3PP/3R1R1K w - - 5 19\nAnswer:"
},
{
"role": "assistant",
"content": "d1d6"
}
] |
|
4r3/p5k1/2p2R1p/2Pp4/1P1pr1P1/P6P/8/3R3K w - - 1 35
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 4r3/p5k1/2p2R1p/2Pp4/1P1pr1P1/P6P/8/3R3K w - - 1 35
Answer:
|
Rxh6, Rxc6, Rxd4
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 4r3/p5k1/2p2R1p/2Pp4/1P1pr1P1/P6P/8/3R3K w - - 1 35\nAnswer:"
},
{
"role": "assistant",
"content": "Rxh6, Rxc6, Rxd4"
}
] |
|
2r3k1/7p/6q1/p1Np4/Qp2pr2/P4P2/1PR2P1K/5R2 w - - 0 36
|
piece_captures
|
List all captures the piece on f3 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 2r3k1/7p/6q1/p1Np4/Qp2pr2/P4P2/1PR2P1K/5R2 w - - 0 36
Piece on: f3
Answer:
|
fxe4
|
[
{
"role": "user",
"content": "List all captures the piece on f3 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 2r3k1/7p/6q1/p1Np4/Qp2pr2/P4P2/1PR2P1K/5R2 w - - 0 36\nPiece on: f3\nAnswer:"
},
{
"role": "assistant",
"content": "fxe4"
}
] |
|
5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33
Answer:
|
Rxd5, Rdxe4, Qxg6, Qxe4, Rexe4
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33\nAnswer:"
},
{
"role": "assistant",
"content": "Rxd5, Rdxe4, Qxg6, Qxe4, Rexe4"
}
] |
|
r2r2k1/2q1bpp1/3p1n1p/1ppN4/1P1BP3/P5Q1/4RPPP/R5K1 b - - 1 20
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r2r2k1/2q1bpp1/3p1n1p/1ppN4/1P1BP3/P5Q1/4RPPP/R5K1 b - - 1 20
Output:
|
r . . r . . k .
. . q . b p p .
. . . p . n . p
. p p N . . . .
. P . B P . . .
P . . . . . Q .
. . . . R P P P
R . . . . . K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r2r2k1/2q1bpp1/3p1n1p/1ppN4/1P1BP3/P5Q1/4RPPP/R5K1 b - - 1 20\nOutput:"
},
{
"role": "assistant",
"content": "r . . r . . k .\n. . q . b p p .\n. . . p . n . p\n. p p N . . . .\n. P . B P . . .\nP . . . . . Q .\n. . . . R P P P\nR . . . . . K ."
}
] |
|
8/r1b1q2k/2p3p1/2Pp4/1P2p1n1/2B1P3/NQ6/2K4R b - - 1 36
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 8/r1b1q2k/2p3p1/2Pp4/1P2p1n1/2B1P3/NQ6/2K4R b - - 1 36
Output:
|
. . . . . . . .
r . b . q . . k
. . p . . . p .
. . P p . . . .
. P . . p . n .
. . B . P . . .
N Q . . . . . .
. . K . . . . R
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 8/r1b1q2k/2p3p1/2Pp4/1P2p1n1/2B1P3/NQ6/2K4R b - - 1 36\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . . .\nr . b . q . . k\n. . p . . . p .\n. . P p . . . .\n. P . . p . n .\n. . B . P . . .\nN Q . . . . . .\n. . K . . . . R"
}
] |
|
3br2r/5k1p/4p1pQ/P5P1/1B5P/P6q/5R2/6K1 b - - 1 35
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3br2r/5k1p/4p1pQ/P5P1/1B5P/P6q/5R2/6K1 b - - 1 35
Output:
|
. . . b r . . r
. . . . . k . p
. . . . p . p Q
P . . . . . P .
. B . . . . . P
P . . . . . . q
. . . . . R . .
. . . . . . K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3br2r/5k1p/4p1pQ/P5P1/1B5P/P6q/5R2/6K1 b - - 1 35\nOutput:"
},
{
"role": "assistant",
"content": ". . . b r . . r\n. . . . . k . p\n. . . . p . p Q\nP . . . . . P .\n. B . . . . . P\nP . . . . . . q\n. . . . . R . .\n. . . . . . K ."
}
] |
|
7r/6k1/2b1pp2/8/P1N3p1/5nP1/4RP2/Q4K2 w - - 2 38
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 7r/6k1/2b1pp2/8/P1N3p1/5nP1/4RP2/Q4K2 w - - 2 38
Output:
|
. . . . . . . r
. . . . . . k .
. . b . p p . .
. . . . . . . .
P . N . . . p .
. . . . . n P .
. . . . R P . .
Q . . . . K . .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 7r/6k1/2b1pp2/8/P1N3p1/5nP1/4RP2/Q4K2 w - - 2 38\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . . r\n. . . . . . k .\n. . b . p p . .\n. . . . . . . .\nP . N . . . p .\n. . . . . n P .\n. . . . R P . .\nQ . . . . K . ."
}
] |
|
2q3k1/4br1p/6RQ/1p1n2p1/7P/1P4P1/1B2PP2/6K1 b - - 0 27
|
piece_captures
|
List all captures the piece on h7 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 2q3k1/4br1p/6RQ/1p1n2p1/7P/1P4P1/1B2PP2/6K1 b - - 0 27
Piece on: h7
Answer:
|
hxg6
|
[
{
"role": "user",
"content": "List all captures the piece on h7 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 2q3k1/4br1p/6RQ/1p1n2p1/7P/1P4P1/1B2PP2/6K1 b - - 0 27\nPiece on: h7\nAnswer:"
},
{
"role": "assistant",
"content": "hxg6"
}
] |
|
2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13
Answer:
|
d4e6
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13\nAnswer:"
},
{
"role": "assistant",
"content": "d4e6"
}
] |
|
r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11
Answer:
|
c6c5
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11\nAnswer:"
},
{
"role": "assistant",
"content": "c6c5"
}
] |
|
8/p1p4p/4Pk2/2PP1p1P/1r3r2/5B2/P3RK2/8 b - - 3 38
|
piece_captures
|
List all captures the piece on f4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 8/p1p4p/4Pk2/2PP1p1P/1r3r2/5B2/P3RK2/8 b - - 3 38
Piece on: f4
Answer:
|
Rxf3+
|
[
{
"role": "user",
"content": "List all captures the piece on f4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 8/p1p4p/4Pk2/2PP1p1P/1r3r2/5B2/P3RK2/8 b - - 3 38\nPiece on: f4\nAnswer:"
},
{
"role": "assistant",
"content": "Rxf3+"
}
] |
|
1R2R3/p7/1p1k3p/1Pb5/P5p1/6P1/5rKP/8 w - - 6 41
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1R2R3/p7/1p1k3p/1Pb5/P5p1/6P1/5rKP/8 w - - 6 41
Answer:
|
g2h1
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1R2R3/p7/1p1k3p/1Pb5/P5p1/6P1/5rKP/8 w - - 6 41\nAnswer:"
},
{
"role": "assistant",
"content": "g2h1"
}
] |
|
5Q2/pbp3np/1p1pB1pk/1P6/P3q2P/6K1/8/8 b - - 1 32
|
piece_captures
|
List all captures the piece on e4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 5Q2/pbp3np/1p1pB1pk/1P6/P3q2P/6K1/8/8 b - - 1 32
Piece on: e4
Answer:
|
Qxe6, Qxh4+, Qxa4
|
[
{
"role": "user",
"content": "List all captures the piece on e4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 5Q2/pbp3np/1p1pB1pk/1P6/P3q2P/6K1/8/8 b - - 1 32\nPiece on: e4\nAnswer:"
},
{
"role": "assistant",
"content": "Qxe6, Qxh4+, Qxa4"
}
] |
|
rn2q1k1/pp3ppp/2pb4/3p1B2/2Pn4/1Q3N2/PP3PPP/R1B4K w - - 0 15
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: rn2q1k1/pp3ppp/2pb4/3p1B2/2Pn4/1Q3N2/PP3PPP/R1B4K w - - 0 15
Answer:
|
f3d4
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: rn2q1k1/pp3ppp/2pb4/3p1B2/2Pn4/1Q3N2/PP3PPP/R1B4K w - - 0 15\nAnswer:"
},
{
"role": "assistant",
"content": "f3d4"
}
] |
|
3r2k1/1b3pbR/p2P2P1/3p2N1/2p5/2P2N2/PP6/2K5 b - - 0 28
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 3r2k1/1b3pbR/p2P2P1/3p2N1/2p5/2P2N2/PP6/2K5 b - - 0 28
Answer:
|
White: Kc1, Rh7, Nf3, Ng5, Pa2, Pb2, Pc3, Pd6, Pg6
Black: Kg8, Rd8, Bb7, Bg7, Pa6, Pc4, Pd5, Pf7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 3r2k1/1b3pbR/p2P2P1/3p2N1/2p5/2P2N2/PP6/2K5 b - - 0 28\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kc1, Rh7, Nf3, Ng5, Pa2, Pb2, Pc3, Pd6, Pg6\nBlack: Kg8, Rd8, Bb7, Bg7, Pa6, Pc4, Pd5, Pf7"
}
] |
|
r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
|
piece_captures
|
List all captures the piece on h2 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
Piece on: h2
Answer:
|
hxg3
|
[
{
"role": "user",
"content": "List all captures the piece on h2 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17\nPiece on: h2\nAnswer:"
},
{
"role": "assistant",
"content": "hxg3"
}
] |
|
r1b1kb1Q/ppp4p/6pB/3P4/2pn4/8/PPP1qPPP/RN1K3R w q - 2 13
|
legal_moves
|
List all legal moves for the piece on d1 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r1b1kb1Q/ppp4p/6pB/3P4/2pn4/8/PPP1qPPP/RN1K3R w q - 2 13
Piece on: d1
Answer:
|
Kc1
|
[
{
"role": "user",
"content": "List all legal moves for the piece on d1 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r1b1kb1Q/ppp4p/6pB/3P4/2pn4/8/PPP1qPPP/RN1K3R w q - 2 13\nPiece on: d1\nAnswer:"
},
{
"role": "assistant",
"content": "Kc1"
}
] |
|
r6k/1b3pp1/p1q1pn1p/2p5/P1B5/1PN4Q/2P1RP1P/R4Kr1 w - - 2 26
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: r6k/1b3pp1/p1q1pn1p/2p5/P1B5/1PN4Q/2P1RP1P/R4Kr1 w - - 2 26
Answer:
|
Kxg1
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: r6k/1b3pp1/p1q1pn1p/2p5/P1B5/1PN4Q/2P1RP1P/R4Kr1 w - - 2 26\nAnswer:"
},
{
"role": "assistant",
"content": "Kxg1"
}
] |
|
2r2rk1/5ppp/bq2p3/p1ppP1N1/Pb1P2P1/1P2P2P/2QN4/2R1K2R b K - 1 18
|
piece_captures
|
List all captures the piece on c5 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 2r2rk1/5ppp/bq2p3/p1ppP1N1/Pb1P2P1/1P2P2P/2QN4/2R1K2R b K - 1 18
Piece on: c5
Answer:
|
cxd4
|
[
{
"role": "user",
"content": "List all captures the piece on c5 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 2r2rk1/5ppp/bq2p3/p1ppP1N1/Pb1P2P1/1P2P2P/2QN4/2R1K2R b K - 1 18\nPiece on: c5\nAnswer:"
},
{
"role": "assistant",
"content": "cxd4"
}
] |
|
r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
|
piece_captures
|
List all captures the piece on f6 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
Piece on: f6
Answer:
|
Qxf2+
|
[
{
"role": "user",
"content": "List all captures the piece on f6 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9\nPiece on: f6\nAnswer:"
},
{
"role": "assistant",
"content": "Qxf2+"
}
] |
|
5Q2/8/1b1kp1p1/5p2/3p4/5qPK/7P/8 b - - 1 51
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 5Q2/8/1b1kp1p1/5p2/3p4/5qPK/7P/8 b - - 1 51
Answer:
|
d6c6
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 5Q2/8/1b1kp1p1/5p2/3p4/5qPK/7P/8 b - - 1 51\nAnswer:"
},
{
"role": "assistant",
"content": "d6c6"
}
] |
|
1k1r3r/2q5/pp1n2p1/8/1Q6/3R2P1/PPP2P1P/3R2K1 b - - 4 29
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 1k1r3r/2q5/pp1n2p1/8/1Q6/3R2P1/PPP2P1P/3R2K1 b - - 4 29
Answer:
|
White: Kg1, Qb4, Rd1, Rd3, Pa2, Pb2, Pc2, Pf2, Pg3, Ph2
Black: Kb8, Qc7, Rd8, Rh8, Nd6, Pa6, Pb6, Pg6
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 1k1r3r/2q5/pp1n2p1/8/1Q6/3R2P1/PPP2P1P/3R2K1 b - - 4 29\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qb4, Rd1, Rd3, Pa2, Pb2, Pc2, Pf2, Pg3, Ph2\nBlack: Kb8, Qc7, Rd8, Rh8, Nd6, Pa6, Pb6, Pg6"
}
] |
|
1qr2rk1/1p1p1ppp/pB2p1n1/7n/2P1P3/1Q2NP1P/PP2B1Pb/3R1RK1 w - - 1 20
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1qr2rk1/1p1p1ppp/pB2p1n1/7n/2P1P3/1Q2NP1P/PP2B1Pb/3R1RK1 w - - 1 20
Answer:
|
g1f2
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1qr2rk1/1p1p1ppp/pB2p1n1/7n/2P1P3/1Q2NP1P/PP2B1Pb/3R1RK1 w - - 1 20\nAnswer:"
},
{
"role": "assistant",
"content": "g1f2"
}
] |
|
7Q/2p5/1p2prp1/p4k1p/P4p1P/8/6RK/3q4 b - - 2 37
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 7Q/2p5/1p2prp1/p4k1p/P4p1P/8/6RK/3q4 b - - 2 37
Answer:
|
White: Kh2, Qh8, Rg2, Pa4, Ph4
Black: Kf5, Qd1, Rf6, Pa5, Pb6, Pc7, Pe6, Pf4, Pg6, Ph5
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 7Q/2p5/1p2prp1/p4k1p/P4p1P/8/6RK/3q4 b - - 2 37\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kh2, Qh8, Rg2, Pa4, Ph4\nBlack: Kf5, Qd1, Rf6, Pa5, Pb6, Pc7, Pe6, Pf4, Pg6, Ph5"
}
] |
|
6k1/p4pp1/1p5p/4b3/4B3/4P1P1/PpR2PKP/3r4 b - - 1 30
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 6k1/p4pp1/1p5p/4b3/4B3/4P1P1/PpR2PKP/3r4 b - - 1 30
Output:
|
. . . . . . k .
p . . . . p p .
. p . . . . . p
. . . . b . . .
. . . . B . . .
. . . . P . P .
P p R . . P K P
. . . r . . . .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 6k1/p4pp1/1p5p/4b3/4B3/4P1P1/PpR2PKP/3r4 b - - 1 30\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . k .\np . . . . p p .\n. p . . . . . p\n. . . . b . . .\n. . . . B . . .\n. . . . P . P .\nP p R . . P K P\n. . . r . . . ."
}
] |
|
r4rk1/p3ppbp/Pp1q1np1/3PpbB1/2B5/2N5/1PPQ1PPP/3RR1K1 w - - 4 18
|
legal_moves
|
List all legal moves for the piece on g5 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r4rk1/p3ppbp/Pp1q1np1/3PpbB1/2B5/2N5/1PPQ1PPP/3RR1K1 w - - 4 18
Piece on: g5
Answer:
|
Bh6, Bxf6, Bh4, Bf4, Be3
|
[
{
"role": "user",
"content": "List all legal moves for the piece on g5 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r4rk1/p3ppbp/Pp1q1np1/3PpbB1/2B5/2N5/1PPQ1PPP/3RR1K1 w - - 4 18\nPiece on: g5\nAnswer:"
},
{
"role": "assistant",
"content": "Bh6, Bxf6, Bh4, Bf4, Be3"
}
] |
|
3r1Q1k/pp4pp/2p5/6q1/5R2/2P5/P1P2PPP/3rR1K1 b - - 8 27
|
piece_captures
|
List all captures the piece on d8 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 3r1Q1k/pp4pp/2p5/6q1/5R2/2P5/P1P2PPP/3rR1K1 b - - 8 27
Piece on: d8
Answer:
|
Rxf8
|
[
{
"role": "user",
"content": "List all captures the piece on d8 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 3r1Q1k/pp4pp/2p5/6q1/5R2/2P5/P1P2PPP/3rR1K1 b - - 8 27\nPiece on: d8\nAnswer:"
},
{
"role": "assistant",
"content": "Rxf8"
}
] |
|
1rb2rk1/q5P1/4p2p/3p3p/3P1P2/2P5/2QK3P/3R2R1 b - - 0 29
|
piece_captures
|
List all captures the piece on f8 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 1rb2rk1/q5P1/4p2p/3p3p/3P1P2/2P5/2QK3P/3R2R1 b - - 0 29
Piece on: f8
Answer:
|
Rxf4
|
[
{
"role": "user",
"content": "List all captures the piece on f8 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 1rb2rk1/q5P1/4p2p/3p3p/3P1P2/2P5/2QK3P/3R2R1 b - - 0 29\nPiece on: f8\nAnswer:"
},
{
"role": "assistant",
"content": "Rxf4"
}
] |
|
3q2k1/2r5/pp3p1Q/2b1n3/P3N3/2P5/1P4PP/R6K b - - 0 24
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3q2k1/2r5/pp3p1Q/2b1n3/P3N3/2P5/1P4PP/R6K b - - 0 24
Output:
|
. . . q . . k .
. . r . . . . .
p p . . . p . Q
. . b . n . . .
P . . . N . . .
. . P . . . . .
. P . . . . P P
R . . . . . . K
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3q2k1/2r5/pp3p1Q/2b1n3/P3N3/2P5/1P4PP/R6K b - - 0 24\nOutput:"
},
{
"role": "assistant",
"content": ". . . q . . k .\n. . r . . . . .\np p . . . p . Q\n. . b . n . . .\nP . . . N . . .\n. . P . . . . .\n. P . . . . P P\nR . . . . . . K"
}
] |
|
1qr2rk1/1p1p1ppp/pB2p1n1/7n/2P1P3/1Q2NP1P/PP2B1Pb/3R1RK1 w - - 1 20
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 1qr2rk1/1p1p1ppp/pB2p1n1/7n/2P1P3/1Q2NP1P/PP2B1Pb/3R1RK1 w - - 1 20
Output:
|
. q r . . r k .
. p . p . p p p
p B . . p . n .
. . . . . . . n
. . P . P . . .
. Q . . N P . P
P P . . B . P b
. . . R . R K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 1qr2rk1/1p1p1ppp/pB2p1n1/7n/2P1P3/1Q2NP1P/PP2B1Pb/3R1RK1 w - - 1 20\nOutput:"
},
{
"role": "assistant",
"content": ". q r . . r k .\n. p . p . p p p\np B . . p . n .\n. . . . . . . n\n. . P . P . . .\n. Q . . N P . P\nP P . . B . P b\n. . . R . R K ."
}
] |
|
4r1k1/5ppp/r1p5/p1n1RP2/8/2P2N1P/2P3P1/3R2K1 b - - 0 21
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 4r1k1/5ppp/r1p5/p1n1RP2/8/2P2N1P/2P3P1/3R2K1 b - - 0 21
Answer:
|
White: Kg1, Rd1, Re5, Nf3, Pc2, Pc3, Pf5, Pg2, Ph3
Black: Kg8, Ra6, Re8, Nc5, Pa5, Pc6, Pf7, Pg7, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 4r1k1/5ppp/r1p5/p1n1RP2/8/2P2N1P/2P3P1/3R2K1 b - - 0 21\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Rd1, Re5, Nf3, Pc2, Pc3, Pf5, Pg2, Ph3\nBlack: Kg8, Ra6, Re8, Nc5, Pa5, Pc6, Pf7, Pg7, Ph7"
}
] |
|
2R2r1k/pQ4pp/5rp1/3B4/q2n4/7P/P4PP1/5RK1 w - - 3 30
|
legal_moves
|
List all legal moves for the piece on g2 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 2R2r1k/pQ4pp/5rp1/3B4/q2n4/7P/P4PP1/5RK1 w - - 3 30
Piece on: g2
Answer:
|
g3, g4
|
[
{
"role": "user",
"content": "List all legal moves for the piece on g2 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 2R2r1k/pQ4pp/5rp1/3B4/q2n4/7P/P4PP1/5RK1 w - - 3 30\nPiece on: g2\nAnswer:"
},
{
"role": "assistant",
"content": "g3, g4"
}
] |
|
1R2R3/p7/1p1k3p/1Pb5/P5p1/6P1/5rKP/8 w - - 6 41
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 1R2R3/p7/1p1k3p/1Pb5/P5p1/6P1/5rKP/8 w - - 6 41
Answer:
|
White: Kg2, Rb8, Re8, Pa4, Pb5, Pg3, Ph2
Black: Kd6, Rf2, Bc5, Pa7, Pb6, Pg4, Ph6
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 1R2R3/p7/1p1k3p/1Pb5/P5p1/6P1/5rKP/8 w - - 6 41\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg2, Rb8, Re8, Pa4, Pb5, Pg3, Ph2\nBlack: Kd6, Rf2, Bc5, Pa7, Pb6, Pg4, Ph6"
}
] |
|
6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22
|
legal_moves
|
List all legal moves for the piece on c2 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22
Piece on: c2
Answer:
|
c3, c4
|
[
{
"role": "user",
"content": "List all legal moves for the piece on c2 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22\nPiece on: c2\nAnswer:"
},
{
"role": "assistant",
"content": "c3, c4"
}
] |
|
4r2k/3q2r1/1p4pQ/p1pP4/2P4P/1N4p1/PP3RK1/8 b - - 1 37
|
legal_moves
|
List all legal moves for the piece on h8 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 4r2k/3q2r1/1p4pQ/p1pP4/2P4P/1N4p1/PP3RK1/8 b - - 1 37
Piece on: h8
Answer:
|
Kg8
|
[
{
"role": "user",
"content": "List all legal moves for the piece on h8 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 4r2k/3q2r1/1p4pQ/p1pP4/2P4P/1N4p1/PP3RK1/8 b - - 1 37\nPiece on: h8\nAnswer:"
},
{
"role": "assistant",
"content": "Kg8"
}
] |
|
3rk3/5p1r/p2Np1p1/3bP3/P2n4/8/1P3RPP/5RK1 b - - 4 25
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 3rk3/5p1r/p2Np1p1/3bP3/P2n4/8/1P3RPP/5RK1 b - - 4 25
Answer:
|
White: Kg1, Rf1, Rf2, Nd6, Pa4, Pb2, Pe5, Pg2, Ph2
Black: Ke8, Rd8, Rh7, Bd5, Nd4, Pa6, Pe6, Pf7, Pg6
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 3rk3/5p1r/p2Np1p1/3bP3/P2n4/8/1P3RPP/5RK1 b - - 4 25\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Rf1, Rf2, Nd6, Pa4, Pb2, Pe5, Pg2, Ph2\nBlack: Ke8, Rd8, Rh7, Bd5, Nd4, Pa6, Pe6, Pf7, Pg6"
}
] |
|
r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
Answer:
|
hxg3
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17\nAnswer:"
},
{
"role": "assistant",
"content": "hxg3"
}
] |
|
5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33
|
piece_captures
|
List all captures the piece on d4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33
Piece on: d4
Answer:
|
Rxd5, Rdxe4
|
[
{
"role": "user",
"content": "List all captures the piece on d4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 5k2/p2r3p/1p4pP/3r1q2/3Rp3/2P5/PP3PQ1/K3R3 w - - 0 33\nPiece on: d4\nAnswer:"
},
{
"role": "assistant",
"content": "Rxd5, Rdxe4"
}
] |
|
r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
Answer:
|
h2g3
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17\nAnswer:"
},
{
"role": "assistant",
"content": "h2g3"
}
] |
|
7r/6k1/2b1pp2/8/P1N3p1/5nP1/4RP2/Q4K2 w - - 2 38
|
piece_captures
|
List all captures the piece on e2 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 7r/6k1/2b1pp2/8/P1N3p1/5nP1/4RP2/Q4K2 w - - 2 38
Piece on: e2
Answer:
|
Rxe6
|
[
{
"role": "user",
"content": "List all captures the piece on e2 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 7r/6k1/2b1pp2/8/P1N3p1/5nP1/4RP2/Q4K2 w - - 2 38\nPiece on: e2\nAnswer:"
},
{
"role": "assistant",
"content": "Rxe6"
}
] |
|
6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22
Answer:
|
White: Kc1, Qd4, Rd1, Rh6, Bb3, Pa4, Pb2, Pc2, Pe4, Pf3, Pg2
Black: Kg8, Qe7, Rc6, Rf7, Bd7, Pa5, Pb4, Pd6, Pe6, Pg6, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 6k1/3bqr1p/2rpp1pR/p7/Pp1QP3/1B3P2/1PP3P1/2KR4 w - - 6 22\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kc1, Qd4, Rd1, Rh6, Bb3, Pa4, Pb2, Pc2, Pe4, Pf3, Pg2\nBlack: Kg8, Qe7, Rc6, Rf7, Bd7, Pa5, Pb4, Pd6, Pe6, Pg6, Ph7"
}
] |
|
3r1n2/1bp1bkpp/p1q2n2/1p6/3P4/P1N3B1/1PP2PPP/R2QR1K1 w - - 5 18
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 3r1n2/1bp1bkpp/p1q2n2/1p6/3P4/P1N3B1/1PP2PPP/R2QR1K1 w - - 5 18
Output:
|
. . . r . n . .
. b p . b k p p
p . q . . n . .
. p . . . . . .
. . . P . . . .
P . N . . . B .
. P P . . P P P
R . . Q R . K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 3r1n2/1bp1bkpp/p1q2n2/1p6/3P4/P1N3B1/1PP2PPP/R2QR1K1 w - - 5 18\nOutput:"
},
{
"role": "assistant",
"content": ". . . r . n . .\n. b p . b k p p\np . q . . n . .\n. p . . . . . .\n. . . P . . . .\nP . N . . . B .\n. P P . . P P P\nR . . Q R . K ."
}
] |
|
5rk1/1p2p1rp/p2p4/2pPb2R/2P1P3/1P1BKP1R/8/8 b - - 4 30
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 5rk1/1p2p1rp/p2p4/2pPb2R/2P1P3/1P1BKP1R/8/8 b - - 4 30
Answer:
|
g7g3
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 5rk1/1p2p1rp/p2p4/2pPb2R/2P1P3/1P1BKP1R/8/8 b - - 4 30\nAnswer:"
},
{
"role": "assistant",
"content": "g7g3"
}
] |
|
6k1/5ppp/5nb1/pp6/6rP/5N1Q/Pq2r1P1/3R2RK b - - 4 32
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: 6k1/5ppp/5nb1/pp6/6rP/5N1Q/Pq2r1P1/3R2RK b - - 4 32
Output:
|
. . . . . . k .
. . . . . p p p
. . . . . n b .
p p . . . . . .
. . . . . . r P
. . . . . N . Q
P q . . r . P .
. . . R . . R K
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: 6k1/5ppp/5nb1/pp6/6rP/5N1Q/Pq2r1P1/3R2RK b - - 4 32\nOutput:"
},
{
"role": "assistant",
"content": ". . . . . . k .\n. . . . . p p p\n. . . . . n b .\np p . . . . . .\n. . . . . . r P\n. . . . . N . Q\nP q . . r . P .\n. . . R . . R K"
}
] |
|
8/1P3ppp/8/8/8/2pk3P/3p2P1/3K4 w - - 0 52
|
legal_moves
|
List all legal moves for the piece on g2 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 8/1P3ppp/8/8/8/2pk3P/3p2P1/3K4 w - - 0 52
Piece on: g2
Answer:
|
g3, g4
|
[
{
"role": "user",
"content": "List all legal moves for the piece on g2 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 8/1P3ppp/8/8/8/2pk3P/3p2P1/3K4 w - - 0 52\nPiece on: g2\nAnswer:"
},
{
"role": "assistant",
"content": "g3, g4"
}
] |
|
8/7p/2b1k3/p2p1pPB/1n1P3P/N1p1P3/4K3/8 b - - 1 42
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 8/7p/2b1k3/p2p1pPB/1n1P3P/N1p1P3/4K3/8 b - - 1 42
Answer:
|
White: Ke2, Bh5, Na3, Pd4, Pe3, Pg5, Ph4
Black: Ke6, Bc6, Nb4, Pa5, Pc3, Pd5, Pf5, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 8/7p/2b1k3/p2p1pPB/1n1P3P/N1p1P3/4K3/8 b - - 1 42\nAnswer:"
},
{
"role": "assistant",
"content": "White: Ke2, Bh5, Na3, Pd4, Pe3, Pg5, Ph4\nBlack: Ke6, Bc6, Nb4, Pa5, Pc3, Pd5, Pf5, Ph7"
}
] |
|
r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
Answer:
|
Qxf2+, Nxc2+
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9\nAnswer:"
},
{
"role": "assistant",
"content": "Qxf2+, Nxc2+"
}
] |
|
3r2k1/4nppp/pq1p1b2/1p2P3/2r2P2/2P1NR2/PP1Q2BP/3R2K1 b - - 0 24
|
legal_moves
|
List all legal moves for the piece on d8 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 3r2k1/4nppp/pq1p1b2/1p2P3/2r2P2/2P1NR2/PP1Q2BP/3R2K1 b - - 0 24
Piece on: d8
Answer:
|
Rf8, Re8, Rdc8, Rb8, Ra8, Rd7
|
[
{
"role": "user",
"content": "List all legal moves for the piece on d8 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 3r2k1/4nppp/pq1p1b2/1p2P3/2r2P2/2P1NR2/PP1Q2BP/3R2K1 b - - 0 24\nPiece on: d8\nAnswer:"
},
{
"role": "assistant",
"content": "Rf8, Re8, Rdc8, Rb8, Ra8, Rd7"
}
] |
|
8/7R/5p2/p7/7P/2p5/3k2r1/1K2N3 w - - 3 48
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 8/7R/5p2/p7/7P/2p5/3k2r1/1K2N3 w - - 3 48
Answer:
|
Nxg2
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 8/7R/5p2/p7/7P/2p5/3k2r1/1K2N3 w - - 3 48\nAnswer:"
},
{
"role": "assistant",
"content": "Nxg2"
}
] |
|
r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
|
legal_moves
|
List all legal moves for the piece on h2 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
Piece on: h2
Answer:
|
hxg3
|
[
{
"role": "user",
"content": "List all legal moves for the piece on h2 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17\nPiece on: h2\nAnswer:"
},
{
"role": "assistant",
"content": "hxg3"
}
] |
|
5Q2/pbp3np/1p1pB1pk/1P6/P3q2P/6K1/8/8 b - - 1 32
|
legal_moves
|
List all legal moves for the piece on h6 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 5Q2/pbp3np/1p1pB1pk/1P6/P3q2P/6K1/8/8 b - - 1 32
Piece on: h6
Answer:
|
Kh5
|
[
{
"role": "user",
"content": "List all legal moves for the piece on h6 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 5Q2/pbp3np/1p1pB1pk/1P6/P3q2P/6K1/8/8 b - - 1 32\nPiece on: h6\nAnswer:"
},
{
"role": "assistant",
"content": "Kh5"
}
] |
|
r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18
Answer:
|
Rxg1
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18\nAnswer:"
},
{
"role": "assistant",
"content": "Rxg1"
}
] |
|
r1b1kb1Q/ppp4p/6pB/3P4/2pn4/8/PPP1qPPP/RN1K3R w q - 2 13
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: r1b1kb1Q/ppp4p/6pB/3P4/2pn4/8/PPP1qPPP/RN1K3R w q - 2 13
Answer:
|
White: Kd1, Qh8, Ra1, Rh1, Bh6, Nb1, Pa2, Pb2, Pc2, Pd5, Pf2, Pg2, Ph2
Black: Ke8, Qe2, Ra8, Bc8, Bf8, Nd4, Pa7, Pb7, Pc4, Pc7, Pg6, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: r1b1kb1Q/ppp4p/6pB/3P4/2pn4/8/PPP1qPPP/RN1K3R w q - 2 13\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kd1, Qh8, Ra1, Rh1, Bh6, Nb1, Pa2, Pb2, Pc2, Pd5, Pf2, Pg2, Ph2\nBlack: Ke8, Qe2, Ra8, Bc8, Bf8, Nd4, Pa7, Pb7, Pc4, Pc7, Pg6, Ph7"
}
] |
|
r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11
|
legal_moves
|
List all legal moves for the piece on f7 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11
Piece on: f7
Answer:
|
f6, f5
|
[
{
"role": "user",
"content": "List all legal moves for the piece on f7 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11\nPiece on: f7\nAnswer:"
},
{
"role": "assistant",
"content": "f6, f5"
}
] |
|
3r2k1/1b3pbR/p2P2P1/3p2N1/2p5/2P2N2/PP6/2K5 b - - 0 28
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 3r2k1/1b3pbR/p2P2P1/3p2N1/2p5/2P2N2/PP6/2K5 b - - 0 28
Answer:
|
Rxd6, Bxc3, fxg6
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 3r2k1/1b3pbR/p2P2P1/3p2N1/2p5/2P2N2/PP6/2K5 b - - 0 28\nAnswer:"
},
{
"role": "assistant",
"content": "Rxd6, Bxc3, fxg6"
}
] |
|
6k1/p4p2/1p5p/4r3/P3B3/1P3P2/2PK2PP/8 w - - 0 29
|
legal_moves
|
List all legal moves for the piece on b3 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 6k1/p4p2/1p5p/4r3/P3B3/1P3P2/2PK2PP/8 w - - 0 29
Piece on: b3
Answer:
|
b4
|
[
{
"role": "user",
"content": "List all legal moves for the piece on b3 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 6k1/p4p2/1p5p/4r3/P3B3/1P3P2/2PK2PP/8 w - - 0 29\nPiece on: b3\nAnswer:"
},
{
"role": "assistant",
"content": "b4"
}
] |
|
r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18
Output:
|
r . . . . r k .
p p . . . p p p
. . . b . . . .
. . p . p P B .
. . . . . . . N
. . P P . . . n
P P . . . . P P
R . . Q . R q K
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18\nOutput:"
},
{
"role": "assistant",
"content": "r . . . . r k .\np p . . . p p p\n. . . b . . . .\n. . p . p P B .\n. . . . . . . N\n. . P P . . . n\nP P . . . . P P\nR . . Q . R q K"
}
] |
|
1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
Answer:
|
White: Ke5, Rb8, Pa2, Pg3, Ph2
Black: Ke7, Nd6, Pa6, Pb7, Pg6, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37\nAnswer:"
},
{
"role": "assistant",
"content": "White: Ke5, Rb8, Pa2, Pg3, Ph2\nBlack: Ke7, Nd6, Pa6, Pb7, Pg6, Ph7"
}
] |
|
3br2r/5k1p/4p1pQ/P5P1/1B5P/P6q/5R2/6K1 b - - 1 35
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 3br2r/5k1p/4p1pQ/P5P1/1B5P/P6q/5R2/6K1 b - - 1 35
Answer:
|
f7g8
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 3br2r/5k1p/4p1pQ/P5P1/1B5P/P6q/5R2/6K1 b - - 1 35\nAnswer:"
},
{
"role": "assistant",
"content": "f7g8"
}
] |
|
r6k/2q3pp/8/2p1n3/R1Qp4/7P/2PB1PP1/6K1 b - - 0 32
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: r6k/2q3pp/8/2p1n3/R1Qp4/7P/2PB1PP1/6K1 b - - 0 32
Answer:
|
White: Kg1, Qc4, Ra4, Bd2, Pc2, Pf2, Pg2, Ph3
Black: Kh8, Qc7, Ra8, Ne5, Pc5, Pd4, Pg7, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: r6k/2q3pp/8/2p1n3/R1Qp4/7P/2PB1PP1/6K1 b - - 0 32\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qc4, Ra4, Bd2, Pc2, Pf2, Pg2, Ph3\nBlack: Kh8, Qc7, Ra8, Ne5, Pc5, Pd4, Pg7, Ph7"
}
] |
|
r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11
Output:
|
r . . . k b . r
p . . . . p p p
b . p . p . . .
. . . q . . . .
. . . Q . . . .
. . . . B N . .
P P P . . P P P
R . . . K . . R
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r3kb1r/p4ppp/b1p1p3/3q4/3Q4/4BN2/PPP2PPP/R3K2R b KQkq - 0 11\nOutput:"
},
{
"role": "assistant",
"content": "r . . . k b . r\np . . . . p p p\nb . p . p . . .\n. . . q . . . .\n. . . Q . . . .\n. . . . B N . .\nP P P . . P P P\nR . . . K . . R"
}
] |
|
3q2k1/2r5/pp3p1Q/2b1n3/P3N3/2P5/1P4PP/R6K b - - 0 24
|
legal_moves
|
List all legal moves for the piece on b6 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 3q2k1/2r5/pp3p1Q/2b1n3/P3N3/2P5/1P4PP/R6K b - - 0 24
Piece on: b6
Answer:
|
b5
|
[
{
"role": "user",
"content": "List all legal moves for the piece on b6 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 3q2k1/2r5/pp3p1Q/2b1n3/P3N3/2P5/1P4PP/R6K b - - 0 24\nPiece on: b6\nAnswer:"
},
{
"role": "assistant",
"content": "b5"
}
] |
|
4r3/p5k1/2p2R1p/2Pp4/1P1pr1P1/P6P/8/3R3K w - - 1 35
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 4r3/p5k1/2p2R1p/2Pp4/1P1pr1P1/P6P/8/3R3K w - - 1 35
Answer:
|
White: Kh1, Rd1, Rf6, Pa3, Pb4, Pc5, Pg4, Ph3
Black: Kg7, Re4, Re8, Pa7, Pc6, Pd4, Pd5, Ph6
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 4r3/p5k1/2p2R1p/2Pp4/1P1pr1P1/P6P/8/3R3K w - - 1 35\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kh1, Rd1, Rf6, Pa3, Pb4, Pc5, Pg4, Ph3\nBlack: Kg7, Re4, Re8, Pa7, Pc6, Pd4, Pd5, Ph6"
}
] |
|
r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18
Answer:
|
f1g1
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: r4rk1/pp3ppp/3b4/2p1pPB1/7N/2PP3n/PP4PP/R2Q1RqK w - - 5 18\nAnswer:"
},
{
"role": "assistant",
"content": "f1g1"
}
] |
|
1r6/5k2/2p1pNp1/p5Pp/1pQ1P2P/2P4R/KP3P2/3q4 w - - 4 31
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 1r6/5k2/2p1pNp1/p5Pp/1pQ1P2P/2P4R/KP3P2/3q4 w - - 4 31
Answer:
|
c4c6
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 1r6/5k2/2p1pNp1/p5Pp/1pQ1P2P/2P4R/KP3P2/3q4 w - - 4 31\nAnswer:"
},
{
"role": "assistant",
"content": "c4c6"
}
] |
|
r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
|
legal_moves
|
List all legal moves for the piece on c7 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9
Piece on: c7
Answer:
|
c6, c5
|
[
{
"role": "user",
"content": "List all legal moves for the piece on c7 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: r1b1k1nr/ppp2pbp/3ppqp1/8/2BnP3/N2P2QP/PPP2PP1/R1B1K2R b KQkq - 4 9\nPiece on: c7\nAnswer:"
},
{
"role": "assistant",
"content": "c6, c5"
}
] |
|
3R4/8/K7/pB2b3/1p6/1P2k3/3p4/8 w - - 4 58
|
legal_moves
|
List all legal moves for the piece on d8 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 3R4/8/K7/pB2b3/1p6/1P2k3/3p4/8 w - - 4 58
Piece on: d8
Answer:
|
Rh8, Rg8, Rf8, Re8, Rc8, Rb8, Ra8, Rd7, Rd6, Rd5, Rd4, Rd3+, Rxd2
|
[
{
"role": "user",
"content": "List all legal moves for the piece on d8 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 3R4/8/K7/pB2b3/1p6/1P2k3/3p4/8 w - - 4 58\nPiece on: d8\nAnswer:"
},
{
"role": "assistant",
"content": "Rh8, Rg8, Rf8, Re8, Rc8, Rb8, Ra8, Rd7, Rd6, Rd5, Rd4, Rd3+, Rxd2"
}
] |
|
3r4/R7/2p5/p1P2p2/1p4k1/nP6/P2KNP2/8 w - - 3 41
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 3r4/R7/2p5/p1P2p2/1p4k1/nP6/P2KNP2/8 w - - 3 41
Answer:
|
White: Kd2, Ra7, Ne2, Pa2, Pb3, Pc5, Pf2
Black: Kg4, Rd8, Na3, Pa5, Pb4, Pc6, Pf5
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 3r4/R7/2p5/p1P2p2/1p4k1/nP6/P2KNP2/8 w - - 3 41\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kd2, Ra7, Ne2, Pa2, Pb3, Pc5, Pf2\nBlack: Kg4, Rd8, Na3, Pa5, Pb4, Pc6, Pf5"
}
] |
|
6Qk/p1p3pp/4N3/1p6/2q1r1n1/2B5/PP4PP/3R1R1K b - - 0 28
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 6Qk/p1p3pp/4N3/1p6/2q1r1n1/2B5/PP4PP/3R1R1K b - - 0 28
Answer:
|
Kxg8
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 6Qk/p1p3pp/4N3/1p6/2q1r1n1/2B5/PP4PP/3R1R1K b - - 0 28\nAnswer:"
},
{
"role": "assistant",
"content": "Kxg8"
}
] |
|
r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17
Answer:
|
White: Kh1, Qb5, Ra1, Rf1, Bc1, Nc3, Pa2, Pb2, Pd3, Pe5, Pf3, Pg2, Ph2
Black: Ke8, Qg6, Ra8, Rh8, Bb6, Bb7, Ng3, Pa7, Pd7, Pf7, Pg7, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: r3k2r/pb1p1ppp/1b4q1/1Q2P3/8/2NP1Pn1/PP4PP/R1B2R1K w kq - 1 17\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kh1, Qb5, Ra1, Rf1, Bc1, Nc3, Pa2, Pb2, Pd3, Pe5, Pf3, Pg2, Ph2\nBlack: Ke8, Qg6, Ra8, Rh8, Bb6, Bb7, Ng3, Pa7, Pd7, Pf7, Pg7, Ph7"
}
] |
|
6k1/6pp/p1N2p2/1pP2bP1/5P2/8/PPP5/3K4 b - - 1 28
|
legal_moves
|
List all legal moves for the piece on h7 in this position.
Respond with ONLY the moves in SAN notation, comma-separated.
Example:
FEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
Piece on: b1
Answer: Na3, Nc3
FEN: 6k1/6pp/p1N2p2/1pP2bP1/5P2/8/PPP5/3K4 b - - 1 28
Piece on: h7
Answer:
|
h6, h5
|
[
{
"role": "user",
"content": "List all legal moves for the piece on h7 in this position.\nRespond with ONLY the moves in SAN notation, comma-separated.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1\nPiece on: b1\nAnswer: Na3, Nc3\n\nFEN: 6k1/6pp/p1N2p2/1pP2bP1/5P2/8/PPP5/3K4 b - - 1 28\nPiece on: h7\nAnswer:"
},
{
"role": "assistant",
"content": "h6, h5"
}
] |
|
3r4/R7/2p5/p1P2p2/1p4k1/nP6/P2KNP2/8 w - - 3 41
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 3r4/R7/2p5/p1P2p2/1p4k1/nP6/P2KNP2/8 w - - 3 41
Answer:
|
d2e3
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 3r4/R7/2p5/p1P2p2/1p4k1/nP6/P2KNP2/8 w - - 3 41\nAnswer:"
},
{
"role": "assistant",
"content": "d2e3"
}
] |
|
6k1/6pp/p1N2p2/1pP2bP1/5P2/8/PPP5/3K4 b - - 1 28
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 6k1/6pp/p1N2p2/1pP2bP1/5P2/8/PPP5/3K4 b - - 1 28
Answer:
|
White: Kd1, Nc6, Pa2, Pb2, Pc2, Pc5, Pf4, Pg5
Black: Kg8, Bf5, Pa6, Pb5, Pf6, Pg7, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 6k1/6pp/p1N2p2/1pP2bP1/5P2/8/PPP5/3K4 b - - 1 28\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kd1, Nc6, Pa2, Pb2, Pc2, Pc5, Pf4, Pg5\nBlack: Kg8, Bf5, Pa6, Pb5, Pf6, Pg7, Ph7"
}
] |
|
6k1/2p2ppp/pnp5/B7/2P3PP/1P1bPPR1/r6r/3R2K1 b - - 1 29
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 6k1/2p2ppp/pnp5/B7/2P3PP/1P1bPPR1/r6r/3R2K1 b - - 1 29
Answer:
|
d3e2
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 6k1/2p2ppp/pnp5/B7/2P3PP/1P1bPPR1/r6r/3R2K1 b - - 1 29\nAnswer:"
},
{
"role": "assistant",
"content": "d3e2"
}
] |
|
1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
|
piece_captures
|
List all captures the piece on b8 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
Piece on: b8
Answer:
|
Rxb7+
|
[
{
"role": "user",
"content": "List all captures the piece on b8 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37\nPiece on: b8\nAnswer:"
},
{
"role": "assistant",
"content": "Rxb7+"
}
] |
|
4r3/1k6/pp3r2/1b2P2p/3R1p2/P1R2P2/1P4PP/6K1 w - - 0 35
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 4r3/1k6/pp3r2/1b2P2p/3R1p2/P1R2P2/1P4PP/6K1 w - - 0 35
Answer:
|
Rxf4, exf6
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 4r3/1k6/pp3r2/1b2P2p/3R1p2/P1R2P2/1P4PP/6K1 w - - 0 35\nAnswer:"
},
{
"role": "assistant",
"content": "Rxf4, exf6"
}
] |
|
3r1rk1/1p4p1/p1p3Qp/2q5/8/3n1N1P/PP1R2P1/5R1K b - - 7 28
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 3r1rk1/1p4p1/p1p3Qp/2q5/8/3n1N1P/PP1R2P1/5R1K b - - 7 28
Answer:
|
g8h8
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 3r1rk1/1p4p1/p1p3Qp/2q5/8/3n1N1P/PP1R2P1/5R1K b - - 7 28\nAnswer:"
},
{
"role": "assistant",
"content": "g8h8"
}
] |
|
6Qk/p1p3pp/4N3/1p6/2q1r1n1/2B5/PP4PP/3R1R1K b - - 0 28
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 6Qk/p1p3pp/4N3/1p6/2q1r1n1/2B5/PP4PP/3R1R1K b - - 0 28
Answer:
|
White: Kh1, Qg8, Rd1, Rf1, Bc3, Ne6, Pa2, Pb2, Pg2, Ph2
Black: Kh8, Qc4, Re4, Ng4, Pa7, Pb5, Pc7, Pg7, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 6Qk/p1p3pp/4N3/1p6/2q1r1n1/2B5/PP4PP/3R1R1K b - - 0 28\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kh1, Qg8, Rd1, Rf1, Bc3, Ne6, Pa2, Pb2, Pg2, Ph2\nBlack: Kh8, Qc4, Re4, Ng4, Pa7, Pb5, Pc7, Pg7, Ph7"
}
] |
|
1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
|
legal_captures
|
List all legal captures in this position.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Answer: Bxf7+
FEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37
Answer:
|
Rxb7+
|
[
{
"role": "user",
"content": "List all legal captures in this position.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nAnswer: Bxf7+\n\nFEN: 1R6/1p2k2p/p2n2p1/4K3/8/6P1/P6P/8 w - - 10 37\nAnswer:"
},
{
"role": "assistant",
"content": "Rxb7+"
}
] |
|
6k1/5ppp/5nb1/pp6/6rP/5N1Q/Pq2r1P1/3R2RK b - - 4 32
|
piece_captures
|
List all captures the piece on e2 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 6k1/5ppp/5nb1/pp6/6rP/5N1Q/Pq2r1P1/3R2RK b - - 4 32
Piece on: e2
Answer:
|
Rexg2
|
[
{
"role": "user",
"content": "List all captures the piece on e2 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 6k1/5ppp/5nb1/pp6/6rP/5N1Q/Pq2r1P1/3R2RK b - - 4 32\nPiece on: e2\nAnswer:"
},
{
"role": "assistant",
"content": "Rexg2"
}
] |
|
8/7k/pR5p/3p4/5r2/2P1p2P/P5P1/6K1 w - - 0 40
|
puzzle
|
Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).
Example 1:
FEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44
Answer: h4h5
Example 2:
FEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18
Answer: a2b4
Now solve:
FEN: 8/7k/pR5p/3p4/5r2/2P1p2P/P5P1/6K1 w - - 0 40
Answer:
|
b6a6
|
[
{
"role": "user",
"content": "Find the best move for this chess puzzle. Respond with ONLY the move in UCI notation (e.g., e2e4).\n\nExample 1:\nFEN: 8/1r6/8/5k1p/2B4K/1P6/8/1R6 w - - 1 44\nAnswer: h4h5\n\nExample 2:\nFEN: 1r3rk1/pbp2p1p/1p4pb/3qp3/1n6/PP1PP1PP/NBPQ3K/R4RN1 w - - 2 18\nAnswer: a2b4\n\nNow solve:\nFEN: 8/7k/pR5p/3p4/5r2/2P1p2P/P5P1/6K1 w - - 0 40\nAnswer:"
},
{
"role": "assistant",
"content": "b6a6"
}
] |
|
r1bqr1k1/pp1nbpp1/2p2n2/6P1/2BP4/P7/1PQNNPP1/R3K2R b KQ - 0 13
|
piece_captures
|
List all captures the piece on e7 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: r1bqr1k1/pp1nbpp1/2p2n2/6P1/2BP4/P7/1PQNNPP1/R3K2R b KQ - 0 13
Piece on: e7
Answer:
|
Bxa3
|
[
{
"role": "user",
"content": "List all captures the piece on e7 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: r1bqr1k1/pp1nbpp1/2p2n2/6P1/2BP4/P7/1PQNNPP1/R3K2R b KQ - 0 13\nPiece on: e7\nAnswer:"
},
{
"role": "assistant",
"content": "Bxa3"
}
] |
|
5rk1/1p2p1rp/p2p4/2pPb2R/2P1P3/1P1BKP1R/8/8 b - - 4 30
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: 5rk1/1p2p1rp/p2p4/2pPb2R/2P1P3/1P1BKP1R/8/8 b - - 4 30
Answer:
|
White: Ke3, Rh3, Rh5, Bd3, Pb3, Pc4, Pd5, Pe4, Pf3
Black: Kg8, Rf8, Rg7, Be5, Pa6, Pb7, Pc5, Pd6, Pe7, Ph7
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: 5rk1/1p2p1rp/p2p4/2pPb2R/2P1P3/1P1BKP1R/8/8 b - - 4 30\nAnswer:"
},
{
"role": "assistant",
"content": "White: Ke3, Rh3, Rh5, Bd3, Pb3, Pc4, Pd5, Pe4, Pf3\nBlack: Kg8, Rf8, Rg7, Be5, Pa6, Pb7, Pc5, Pd6, Pe7, Ph7"
}
] |
|
r3qrk1/2p2pp1/p2bpn1p/2ppNb2/3P1P2/1PP1P1B1/P2N2PP/R2Q1RK1 b - - 0 14
|
piece_positions
|
List all pieces and their positions from this FEN.
Format: "White: pieces" then "Black: pieces", sorted by piece value (K, Q, R, B, N, P).
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Answer:
White: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2
Black: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7
FEN: r3qrk1/2p2pp1/p2bpn1p/2ppNb2/3P1P2/1PP1P1B1/P2N2PP/R2Q1RK1 b - - 0 14
Answer:
|
White: Kg1, Qd1, Ra1, Rf1, Bg3, Nd2, Ne5, Pa2, Pb3, Pc3, Pd4, Pe3, Pf4, Pg2, Ph2
Black: Kg8, Qe8, Ra8, Rf8, Bd6, Bf5, Nf6, Pa6, Pc5, Pc7, Pd5, Pe6, Pf7, Pg7, Ph6
|
[
{
"role": "user",
"content": "List all pieces and their positions from this FEN.\nFormat: \"White: pieces\" then \"Black: pieces\", sorted by piece value (K, Q, R, B, N, P).\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nAnswer:\nWhite: Ke1, Qd1, Ra1, Rh1, Bc1, Bf1, Nb1, Ng1, Pa2, Pb2, Pc2, Pd2, Pe4, Pf2, Pg2, Ph2\nBlack: Ke8, Qd8, Ra8, Rh8, Bc8, Bf8, Nb8, Ng8, Pa7, Pb7, Pc7, Pd7, Pe7, Pf7, Pg7, Ph7\n\nFEN: r3qrk1/2p2pp1/p2bpn1p/2ppNb2/3P1P2/1PP1P1B1/P2N2PP/R2Q1RK1 b - - 0 14\nAnswer:"
},
{
"role": "assistant",
"content": "White: Kg1, Qd1, Ra1, Rf1, Bg3, Nd2, Ne5, Pa2, Pb3, Pc3, Pd4, Pe3, Pf4, Pg2, Ph2\nBlack: Kg8, Qe8, Ra8, Rf8, Bd6, Bf5, Nf6, Pa6, Pc5, Pc7, Pd5, Pe6, Pf7, Pg7, Ph6"
}
] |
|
2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13
|
piece_captures
|
List all captures the piece on d4 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13
Piece on: d4
Answer:
|
Nxe6, Nxc6
|
[
{
"role": "user",
"content": "List all captures the piece on d4 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 2kr1b1r/p1p2pp1/2pqb3/7p/3N2n1/2NPB3/PPP2PPP/R2Q1RK1 w - - 2 13\nPiece on: d4\nAnswer:"
},
{
"role": "assistant",
"content": "Nxe6, Nxc6"
}
] |
|
3r2k1/4nppp/pq1p1b2/1p2P3/2r2P2/2P1NR2/PP1Q2BP/3R2K1 b - - 0 24
|
piece_captures
|
List all captures the piece on b6 can make.
Respond with ONLY the captures in SAN notation, comma-separated. If no captures, respond "none".
Example:
FEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Piece on: c4
Answer: Bxf7+
FEN: 3r2k1/4nppp/pq1p1b2/1p2P3/2r2P2/2P1NR2/PP1Q2BP/3R2K1 b - - 0 24
Piece on: b6
Answer:
|
Qxe3+
|
[
{
"role": "user",
"content": "List all captures the piece on b6 can make.\nRespond with ONLY the captures in SAN notation, comma-separated. If no captures, respond \"none\".\n\nExample:\nFEN: r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4\nPiece on: c4\nAnswer: Bxf7+\n\nFEN: 3r2k1/4nppp/pq1p1b2/1p2P3/2r2P2/2P1NR2/PP1Q2BP/3R2K1 b - - 0 24\nPiece on: b6\nAnswer:"
},
{
"role": "assistant",
"content": "Qxe3+"
}
] |
|
r3qrk1/2p2pp1/p2bpn1p/2ppNb2/3P1P2/1PP1P1B1/P2N2PP/R2Q1RK1 b - - 0 14
|
ascii_board
|
Generate an ASCII representation of this chess position.
Output ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.
Example:
FEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1
Output:
r n b q k b n r
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . P . . .
. . . . . . . .
P P P P . P P P
R N B Q K B N R
FEN: r3qrk1/2p2pp1/p2bpn1p/2ppNb2/3P1P2/1PP1P1B1/P2N2PP/R2Q1RK1 b - - 0 14
Output:
|
r . . . q r k .
. . p . . p p .
p . . b p n . p
. . p p N b . .
. . . P . P . .
. P P . P . B .
P . . N . . P P
R . . Q . R K .
|
[
{
"role": "user",
"content": "Generate an ASCII representation of this chess position.\nOutput ONLY the 8x8 grid. Use uppercase for White, lowercase for Black, dots for empty.\n\nExample:\nFEN: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1\nOutput:\nr n b q k b n r\np p p p p p p p\n. . . . . . . .\n. . . . . . . .\n. . . . P . . .\n. . . . . . . .\nP P P P . P P P\nR N B Q K B N R\n\nFEN: r3qrk1/2p2pp1/p2bpn1p/2ppNb2/3P1P2/1PP1P1B1/P2N2PP/R2Q1RK1 b - - 0 14\nOutput:"
},
{
"role": "assistant",
"content": "r . . . q r k .\n. . p . . p p .\np . . b p n . p\n. . p p N b . .\n. . . P . P . .\n. P P . P . B .\nP . . N . . P P\nR . . Q . R K ."
}
] |
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