[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "r2qkbnr/pppbppp1/2n4p/1B6/3P4/2N2N1P/PPP2PP1/R1BQK2R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:26.363 UTC"] [GameStartTime "2025-06-23T15:43:26.173 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... Nf6 {-0.75 5/0 87 343052} 2. d5 {+0.65 5/0 86 1243252, Black makes an illegal move: g8f6} 1-0