[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "r2qkbnr/ppp2p1p/2n1p1p1/3p1b2/2PP1B2/P1N4P/1P2PPP1/R2QKBNR b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:34.328 UTC"] [GameStartTime "2025-06-23T15:43:34.030 UTC"] [PlyCount "3"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... g5 {-0.25 5/0 86 535147} 2. cxd5 {-0.75 6/0 93 680713} gxf4 {-0.35 6/0 85 1356262, White makes an illegal move: c4d5} 0-1