[Event "?"] [Site "?"] [Date "2025.05.19"] [Round "1"] [White "Integral-base"] [Black "Integral-dev"] [Result "0-1"] [FEN "rnbqk2r/1ppp1pp1/p2b1n1p/4p3/4P3/3P1NP1/PPP2PBP/RNBQ1RK1 b kq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-05-19T02:53:37.934 UTC"] [GameStartTime "2025-05-19T02:53:37.096 UTC"] [PlyCount "1"] [SetUp "1"] [Termination "illegal move"] [TimeControl "9.79+0.1"] 1... Nc6 {-1.21 18/39 814 354546, White makes an illegal move: c5c4} 0-1