[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "r1bqk2r/pp2npbp/2npp1p1/2p5/B3P3/2NP1Q2/PPP1NPPP/R1B1K2R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:23.991 UTC"] [GameStartTime "2025-06-23T15:43:23.677 UTC"] [PlyCount "3"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... O-O {-0.40 4/0 90 301188} 2. Bxc6 {-0.65 5/0 95 787613} Nxc6 {0.00 5/0 102 473806, White makes an illegal move: a4c6} 0-1