[Event "?"] [Site "?"] [Date "2025.06.27"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "r1bqk2r/pp2npbp/2npp1p1/2p5/2B1P3/2NP1N2/PPPQ1PPP/R1B1K2R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-27T23:29:14.546 UTC"] [GameStartTime "2025-06-27T23:29:13.919 UTC"] [PlyCount "3"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.14+0.04"] 1... a6 {-0.65 6/0 263 696714} 2. O-O {+0.35 5/0 122 428973} Na5 {-0.35 6/0 158 730030, White makes an illegal move: 0000} 0-1