[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "r2qkb1r/pppnpppp/5n2/3p1b2/6P1/2PPPP2/PP5P/RNBQKBNR b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:41.161 UTC"] [GameStartTime "2025-06-23T15:43:40.924 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... Nxg4 {-2.45 7/0 101 889477} 2. fxg4 {+0.60 7/0 115 1809690, Black makes an illegal move: f6g4} 1-0