Date White Black Result Termination Moves Illegal
2025-12-02 claude-opus-4.1 (no thinking) gpt-5-chat 1-0 forfeit_illegal_move 9 2
2025-12-02 gpt-5-chat gpt-4 1-0 forfeit_illegal_move 5 2
2025-12-02 gpt-5 (minimal) gpt-5-chat 0-1 forfeit_illegal_move 20 2
2025-12-02 claude-opus-4 (no thinking) gpt-5-chat 1-0 forfeit_illegal_move 8 2
2025-12-02 gpt-5-chat claude-opus-4 (no thinking) 1-0 checkmate 16 0
2025-12-02 gpt-5-chat claude-opus-4 (no thinking) 1-0 forfeit_illegal_move 13 3
2025-12-02 gpt-5-chat claude-opus-4 (no thinking) 1-0 forfeit_illegal_move 11 2
2025-12-02 claude-opus-4 (no thinking) gpt-5-chat 1-0 forfeit_illegal_move 9 2
2025-12-02 gpt-5 (minimal) gpt-5-chat 1-0 forfeit_illegal_move 12 3
2025-12-02 claude-opus-4 (no thinking) gpt-5-chat 1-0 forfeit_illegal_move 9 2