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Model description

GPT-2 medium finetuned on 8 million chess games (short algebraic notation)

Data: Chess DB + sample from lichess + sample from CCRL

Example context: "1-0 2700 1350 1.e4 e5 2.Nf3 Nc6" (white score-black score white_elo black_elo moves)

Model results

  • ELO (measured against Stockfish) ~ 1340
  • % legal moves 98.5%
  • checkmates in one move (from BigBench benchmark) - 46.5%

license: agpl-3.0

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