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Evaluate the following chess position in FEN format.
rnbqkbnr/pppp1ppp/8/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2
Position is equal
Evaluate the following chess position in FEN format.
4rrk1/1ppq1ppp/p1npbb2/8/5B2/2PB1N1P/PPPQ1PP1/3RR1K1 w - - 0 14
Position is equal
Evaluate the following chess position in FEN format.
8/6p1/4k3/1R6/1p3B1P/5PK1/2r3P1/3r4 b - - 7 64
Black has a strong advantage
Evaluate the following chess position in FEN format.
8/6p1/4k3/1R6/1p3B1P/5PK1/2r3P1/6r1 w - - 8 65
Position is equal
Evaluate the following chess position in FEN format.
rnbqkbnr/p2ppppp/1pp5/8/1P6/6P1/P1PPPPBP/RNBQK1NR b KQkq - 0 3
Position is equal
Evaluate the following chess position in FEN format.
r3kbnr/p3pppp/2n5/1p1q4/2p5/5NP1/P1QPPP1P/RNB1K2R w KQkq - 0 10
Position is equal
Evaluate the following chess position in FEN format.
8/6pp/4pp2/pnk5/4P3/1K4P1/3P1P1P/8 b - - 7 32
Black will likely win
Evaluate the following chess position in FEN format.
8/6pp/3npp2/p7/K2kP3/6P1/3P1P1P/8 w - - 10 34
Black will likely win
Evaluate the following chess position in FEN format.
rnbqk2r/pp3ppp/2pbpn2/3p4/3P4/4PNP1/PPP1BP1P/RNBQ1RK1 b kq - 0 6
Position is equal
Evaluate the following chess position in FEN format.
r1bq1rk1/pp3ppp/n1pbpn2/3p2N1/3PP3/2PB2P1/PP3P1P/RNBQ1RK1 b - - 0 10
Position is equal
Evaluate the following chess position in FEN format.
6k1/pp3ppp/3N4/4N3/6b1/4B1P1/r3RP1P/5QK1 b - - 0 29
White will likely win
Evaluate the following chess position in FEN format.
6k1/pp3ppp/b2N4/4N3/8/4B1P1/r4P1P/4Q1K1 w - - 2 31
White will likely win
Evaluate the following chess position in FEN format.
r4rk1/p2bnpbp/6p1/n1Npp1N1/1q3B2/2P5/PP2PPPP/R3KB1R b KQ - 0 15
Black will likely win
Evaluate the following chess position in FEN format.
r4rk1/p2bnp1p/3b2p1/n1qp4/8/2P1PN2/PP3PPP/R3KB1R b KQ - 0 18
Black will likely win
Evaluate the following chess position in FEN format.
r4rk1/p2bnp1p/3b2p1/3p4/P7/2q1PN2/P4PPP/1R2KB1R w K - 0 22
Black will likely win
Evaluate the following chess position in FEN format.
rnbqkb1r/pp2pp1p/2p2np1/3p4/2PPP3/2N2P2/PP4PP/R1BQKBNR b KQkq - 0 5
Position is equal
Evaluate the following chess position in FEN format.
rnbqk2r/p3ppbp/2p2np1/1p6/3PP3/1BN1BP2/PP4PP/R2QK1NR b KQkq - 3 8
White has a strong advantage
Evaluate the following chess position in FEN format.
r7/p4pk1/1n2bRpp/8/4q1PP/1B6/PP2N2Q/3rK3 w - - 0 25
Black will likely win
Evaluate the following chess position in FEN format.
r7/p4p2/1n2bkp1/6P1/4q3/8/PP2N2Q/3BK3 b - - 0 27
Black will likely win
Evaluate the following chess position in FEN format.
rnb1kbnr/1pqp1ppp/p3p3/2p5/4PP2/2NPB3/PPP3PP/R2QKBNR b KQkq - 0 5
Position is equal
Evaluate the following chess position in FEN format.
2kr1b1r/1bq2pp1/p1n5/1pp4p/3pPP2/1P3N1P/P1PQ1BP1/2KR1B1R w - - 1 15
Black has a strong advantage
Evaluate the following chess position in FEN format.
1k1r1r2/1b3q2/p1n5/1pp1P1p1/3p1bQ1/1P1B1N1P/P1P3P1/1K1R3R b - - 0 25
Black will likely win
Evaluate the following chess position in FEN format.
1kbr1r2/8/p1n5/1pp1P1pq/3p1bP1/1P1B1N1P/P1P5/1K1R3R b - - 0 27
Black will likely win
Evaluate the following chess position in FEN format.
r3kbnr/ppp1pppp/2nq4/3p1b2/3P4/2P1PN2/PP2BPPP/RNBQK2R b KQkq - 4 5
Position is equal
Evaluate the following chess position in FEN format.
2kr3r/ppp1b1p1/2nq2N1/3p1p2/3PpPp1/2P1P1Pb/PP3R1P/RNBQ2K1 b - - 3 15
Black will likely win
Evaluate the following chess position in FEN format.
2kr3r/ppp1b1p1/2n4q/3p1p2/3PpPp1/2P1P1P1/PP4KP/RNBQ4 w - - 1 18
Black will likely win
Evaluate the following chess position in FEN format.
r2qkbnr/pppb1ppp/3p4/n2Pp3/Q1P1P3/2N2N2/PP3PPP/R1B1KB1R w KQkq - 3 8
White will likely win
Evaluate the following chess position in FEN format.
r2q1rk1/ppNbbppp/3p4/Q2Pp1B1/2P1n3/5N2/PP3PPP/R3KB1R w KQ - 0 12
White will likely win
Evaluate the following chess position in FEN format.
R7/3N4/6pp/5pk1/3n4/3BR3/1P3P1P/4K3 w - - 8 45
White will likely win
Evaluate the following chess position in FEN format.
8/8/8/7p/3R1pNk/3B2R1/1P3P1P/4K3 w - - 0 50
White will likely win
Evaluate the following chess position in FEN format.
rnbqkbnr/pp3ppp/2p5/3p4/4p3/1P2P3/PBPPQPPP/RN2KBNR w KQkq - 0 5
Position is equal
Evaluate the following chess position in FEN format.
r2q1rk1/pp1n1ppp/2pb4/3p1b1n/8/1PNPPP1P/PBP1Q1B1/2KR2NR w - - 1 12
Black has a strong advantage
Evaluate the following chess position in FEN format.
r4rk1/1pqnbpp1/2p4p/p2p1b2/N2P1P1P/1P2PN2/PBP2Q2/2K3RB b - - 1 19
Black will likely win
Evaluate the following chess position in FEN format.
r4r1k/1p2qp2/2p3pN/p2p1b1P/1n1P1P2/1PN1P1Q1/PB6/2K3RB w - - 1 28
White will likely win
Evaluate the following chess position in FEN format.
rnbqkb1r/ppp2ppp/8/3pN3/4n3/3B4/PPPP1PPP/RNBQK2R b KQkq - 1 5
Black will likely win
Evaluate the following chess position in FEN format.
r2qr1k1/1ppb2pp/p1nb4/5p2/4p3/2NPB3/PPP2PPP/R2QNRK1 w - - 0 13
Black has a strong advantage
Evaluate the following chess position in FEN format.
2rr3k/1p5p/p4qpP/3R1b2/2P1pP2/1P2Q3/P1N3P1/3R2K1 b - - 2 30
White will likely win
Evaluate the following chess position in FEN format.
3r1k1Q/1p5p/p6q/6R1/2P1pP2/1P6/P5P1/6K1 b - - 6 37
White will likely win
Evaluate the following chess position in FEN format.
rnbqkb1r/pppp1ppp/5n2/4p3/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 0 3
Position is equal
Evaluate the following chess position in FEN format.
r1bq1rk1/pppp1ppp/2nn4/4p3/2BP4/2P2N2/P1P2PPP/R1B1QRK1 w - - 2 9
Position is equal
Evaluate the following chess position in FEN format.
rn1q2k1/ppB3pp/5p2/2Pp1b2/3P4/5NQ1/P1r2PPP/2R2RK1 b - - 0 20
White has a slight advantage
Evaluate the following chess position in FEN format.
rn4k1/ppB3pp/5p2/2Pp1b2/3P4/5NQ1/P3qPPP/5RK1 w - - 0 23
White will likely win
Evaluate the following chess position in FEN format.
rn1qkbnr/ppp2ppp/3p4/8/3QP3/5B2/PPP2PPP/RNB1K2R b KQkq - 0 6
White has a strong advantage
Evaluate the following chess position in FEN format.
rn2kb1r/pp3ppp/2pp1n2/8/4P3/2N2B2/PPP2PPP/R1B2RK1 b kq - 1 9
White has a slight advantage
Evaluate the following chess position in FEN format.
1b6/2R2pk1/7r/P7/1P6/2P3Pp/5P1P/5K2 w - - 3 41
White will likely win
Evaluate the following chess position in FEN format.
8/1R3pk1/P6r/1P6/8/2b3Pp/5P1P/5K2 b - - 0 43
White has a slight advantage
Evaluate the following chess position in FEN format.
r2qkb1r/pppbpppp/2np1n2/8/8/1P4P1/PBPPPPBP/RN1QK1NR w KQkq - 5 5
White has a slight advantage
Evaluate the following chess position in FEN format.
2kr3r/ppp1bppp/3pbn2/1q6/8/1PN2NP1/PBP2PBP/R2QK2R b KQ - 4 13
White will likely win
Evaluate the following chess position in FEN format.
2kr3r/ppp1b1pp/3pp3/3N4/8/1P4P1/PBP2PBP/R3K2R b KQ - 0 17
White will likely win
Evaluate the following chess position in FEN format.
3r4/pBpk2pp/3p4/4p3/8/1P2P1P1/PBP4P/2K2R2 b - - 0 23
White will likely win
Evaluate the following chess position in FEN format.
r1bqkbnr/pp1ppppp/2n5/2p5/4P3/1P3N2/P1PP1PPP/RNBQKB1R b KQkq - 0 3
Position is equal
Evaluate the following chess position in FEN format.
r2q1rk1/pp2bp2/2np1np1/2p1p2p/4P1P1/1PPP1B1P/PB3P2/RN1Q1RK1 b - - 0 12
Black has a strong advantage
Evaluate the following chess position in FEN format.
r6q/pp2bpk1/3p1np1/2p1p3/2PnP1P1/1P1P1B2/PB3PK1/RN5Q w - - 2 19
Position is equal
Evaluate the following chess position in FEN format.
7r/p3bpk1/1p1p1np1/2p5/2PpP1P1/1P1P1B2/P2N1PK1/R7 w - - 0 22
Position is equal
Evaluate the following chess position in FEN format.
rnbqkb1r/ppp2ppp/3p1n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4
Position is equal
Evaluate the following chess position in FEN format.
r2q1rk1/n1p1bpp1/1p1p1n1p/pP2p3/P1B1P3/1QPPBN2/5PPP/R3K2R w KQ - 0 13
White will likely win
Evaluate the following chess position in FEN format.
3r3k/5Rp1/1p1p3p/p2Qp3/P3P3/2PP3P/6PK/4q3 b - - 6 28
Position is equal
Evaluate the following chess position in FEN format.
3r3k/1Q6/1p1p3p/p3p3/P3Pq2/3P2RP/6PK/8 b - - 2 31
Black will likely win
Evaluate the following chess position in FEN format.
rnb1kbnr/pppp1ppp/5q2/4p3/4P3/5N1P/PPPP1PP1/RNBQKB1R b KQkq - 0 3
White has a slight advantage
Evaluate the following chess position in FEN format.
rnb1k1nr/p4pp1/2pp1q1p/1pb1p3/2B1P3/1PN2N1P/PBPP1PP1/R2QK2R w KQkq - 0 8
White has a slight advantage
Evaluate the following chess position in FEN format.
2r3k1/p4pp1/3p3q/4p2p/P1p1P2P/2Q3P1/2PNKP1R/8 b - - 5 27
White will likely win
Evaluate the following chess position in FEN format.
8/p6k/3p2pq/4pQ1p/P1p1P2P/5NP1/2P2PK1/7R w - - 0 36
White will likely win
Evaluate the following chess position in FEN format.
r1bqkbnr/pppp1ppp/8/8/3QP3/8/PPP2PPP/RNB1KB1R b KQkq - 0 5
White has a slight advantage
Evaluate the following chess position in FEN format.
r1b1k1nr/pp1p1ppp/2p5/2b5/4P3/2NB4/PPP2PPP/R1B2RK1 b kq - 1 9
White has a slight advantage
Evaluate the following chess position in FEN format.
8/8/p7/7R/r2pk3/8/4KP2/8 b - - 0 48
Black will likely win
Evaluate the following chess position in FEN format.
8/8/p7/8/3k4/3pR3/r4P2/5K2 w - - 6 53
Black will likely win
Evaluate the following chess position in FEN format.
r1bqkb1r/ppp2ppp/2n2n2/3pp1N1/2B1P3/8/PPPP1PPP/RNBQK2R w KQkq - 0 5
Position is equal
Evaluate the following chess position in FEN format.
r1b1k2r/ppp2pp1/3bqn1p/8/8/3NN3/PPP2PPP/R1BQR1K1 b kq - 2 14
Position is equal
Evaluate the following chess position in FEN format.
1Qbr2k1/p1p2pp1/4qn1p/2p5/2P5/4N3/PB2RPPP/R5K1 b - - 0 21
White will likely win
Evaluate the following chess position in FEN format.
1Qb3k1/p1p2pp1/4q2p/2pr4/2P1n3/8/PB2RPPP/R5K1 w - - 0 23
White will likely win
Evaluate the following chess position in FEN format.
r1bqkbnr/1p2pppp/p1n5/3p4/3P4/2PB1N2/PP3PPP/RNBQK2R b KQkq - 0 6
Position is equal
Evaluate the following chess position in FEN format.
r2qk2r/1p2bppp/p1n1pn2/3p2Bb/3P4/2P2N1P/PP1NBPP1/R2Q1RK1 b kq - 5 11
Position is equal
Evaluate the following chess position in FEN format.
2r2rk1/1p6/p3p2p/n2p1qpQ/3Pp3/bPP1B1PP/P1R2PN1/5RK1 b - - 8 27
Position is equal
Evaluate the following chess position in FEN format.
2r2r2/1p1k2Q1/p3p3/n2p4/3Pp1Pp/bPP1Bq1P/P1R2P2/5RK1 b - - 6 33
Black will likely win
Evaluate the following chess position in FEN format.
r1b1k1nr/1pppqpb1/p1n1p1pp/4P3/3P4/2N3P1/PPP2PBP/RNBQK2R w KQkq - 4 8
White has a strong advantage
Evaluate the following chess position in FEN format.
1r1b3r/1P1q1pk1/4p1pp/4P3/2PN1P1P/2Q3P1/8/4KN2 b - - 1 38
Black will likely win
Evaluate the following chess position in FEN format.
r2b3r/1q3pk1/4p1pp/4PP2/2PN3P/2Q1N1P1/8/4K3 b - - 0 40
Black will likely win
Evaluate the following chess position in FEN format.
r1b1kbnr/pp2pppp/8/3N4/2Pn4/8/PP2PPPP/R1BK1BNR b kq - 2 7
White has a strong advantage
Evaluate the following chess position in FEN format.
r1bk2nr/pp3ppp/8/3P4/1b1P4/P7/1P3PPP/R1BK1BNR b - - 0 11
White has a strong advantage
Evaluate the following chess position in FEN format.
r2kr3/pp3p1p/5p2/3P4/1P2b1P1/P4N1P/4Bb2/2RK3R w - - 1 21
Position is equal
Evaluate the following chess position in FEN format.
r2kr3/pp3p1p/5p2/3P4/1P2b1P1/P4N1P/4Bb2/2RK1R2 b - - 2 21
Position is equal
Evaluate the following chess position in FEN format.
rnbqkbnr/ppp1pppp/8/3p4/3P4/2N5/PPP1PPPP/R1BQKBNR b KQkq - 0 2
Position is equal
Evaluate the following chess position in FEN format.
r2q1rk1/1p1bbppp/p3p1n1/3pP3/8/2N2N1P/PPPB1PP1/R2QR1K1 w - - 7 14
Position is equal
Evaluate the following chess position in FEN format.
3r1rk1/2q3pp/p3pbn1/1b6/RP6/2P1R1NP/3N1pP1/3Q1K2 w - - 1 29
Black will likely win
Evaluate the following chess position in FEN format.
3r1rk1/6pp/p3pbn1/8/QPq5/2P1R1NP/5pP1/5K2 w - - 0 31
Black will likely win
Evaluate the following chess position in FEN format.
rnbqkbnr/ppp1pppp/8/3p4/2PP4/8/PP2PPPP/RNBQKBNR b KQkq - 0 2
Position is equal
Evaluate the following chess position in FEN format.
r3k2r/pp1qppbp/2p2np1/2Pp1b2/3P4/2N1PP2/PP1B2PP/R2QKB1R w KQkq - 0 11
Position is equal
Evaluate the following chess position in FEN format.
r4rk1/1p2ppb1/5np1/ppP2b2/3P3p/2N4P/P2B4/2KR2R1 w - - 0 24
Black will likely win
Evaluate the following chess position in FEN format.
2r2rk1/2P1pp2/1p4p1/pN1n1b2/P2b3p/7P/3B4/2KR2R1 w - - 0 28
Black will likely win
Evaluate the following chess position in FEN format.
r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4
Position is equal
Evaluate the following chess position in FEN format.
r1b2rk1/ppp3pp/2np4/4p3/4P1n1/2PPR3/PP3PPP/RN1Q2K1 w - - 1 13
White will likely win
Evaluate the following chess position in FEN format.
1r3k2/3nn3/2pQ3p/3pp1p1/8/2PP1P1P/PP3PK1/R7 b - - 3 31
White will likely win
Evaluate the following chess position in FEN format.
8/4n3/2p1k2p/Q2pp1p1/8/2PP1P1P/P2r1PK1/4R3 w - - 7 36
White will likely win
Evaluate the following chess position in FEN format.
rnbqk2r/ppppppbp/5np1/8/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 2 4
Position is equal
Evaluate the following chess position in FEN format.
r1bq1rk1/p1p1ppbp/1n3np1/4N3/3P4/2N1PQ2/PP2BPPP/R1B1K2R b KQ - 6 12
White has a strong advantage
Evaluate the following chess position in FEN format.
8/7r/8/6B1/4p3/p1kb4/5K2/8 w - - 0 61
Black will likely win
Evaluate the following chess position in FEN format.
8/3q4/5r2/2K5/4p3/3b4/2k5/8 b - - 5 68
Black will likely win
Evaluate the following chess position in FEN format.
rnbqk2r/pppp1pbp/6p1/5p2/3P4/4P1P1/PPP2P1P/RN1QKBNR w KQkq - 1 6
Position is equal
Evaluate the following chess position in FEN format.
rnbq1rk1/ppp2pbp/3p2p1/5p2/3P4/4P1P1/PPP1NPBP/RN1QK2R w KQ - 0 8
Position is equal
Evaluate the following chess position in FEN format.
4q1k1/5p1p/6p1/pp1Q4/P1p1p3/2P1P1P1/1P3P1P/6K1 b - - 0 32
White has a strong advantage
End of preview. Expand in Data Studio

Chess Position Evaluation Dataset

This dataset contains chess positions in FEN format along with their Stockfish evaluations. It is formatted in the Alpaca instruction-following format.

Dataset Structure

Each example contains:

  • instruction: A prompt to evaluate the chess position
  • input: The FEN string representing the chess position
  • output: The evaluation score in pawn units (positive values favor White, negative values favor Black)

Example

{
    "instruction": "Evaluate the following chess position in FEN format.",
    "input": "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1",
    "output": "0.52"
}

Intended Use

This dataset can be used to train models to evaluate chess positions. The evaluation scores are in pawn units, where:

  • Positive values indicate an advantage for White
  • Negative values indicate an advantage for Black
  • Values closer to 0 indicate a more balanced position
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Models trained or fine-tuned on dsaunders23/ChessAlpacaPrediction