[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "rnb1k1nr/ppp2ppp/1q1p4/2b1p3/2P5/2NPPN2/PP2BPPP/R1BQK2R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:40:41.555 UTC"] [GameStartTime "2025-06-23T15:40:41.255 UTC"] [PlyCount "3"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4+0.04"] 1... Nc6 {-0.50 4/0 89 328974} 2. a3 {-0.25 5/0 103 511434} Bg4 {-0.35 4/0 83 358080, White makes an illegal move: a2a3} 0-1