[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "r2qk2r/ppp2ppp/2nb1n2/3pp3/8/PP1PP1PN/1BP2P1P/RN1QK2R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:40:36.551 UTC"] [GameStartTime "2025-06-23T15:40:36.198 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4+0.04"] 1... d4 {+1.35 5/0 89 695055} 2. exd4 {-1.60 6/0 216 1985698, Black makes an illegal move: d5d4} 1-0