[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "r3kb1r/ppp1pppp/2n5/3n3b/8/5N1P/PPPPBPP1/RNB2RK1 b kq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T14:40:05.573 UTC"] [GameStartTime "2025-06-23T14:40:05.315 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "0.86+0.01"] 1... Nf4 {-0.10 4/0 1 9391} 2. Bd1 {-3.40 5/0 1 15678, Black makes an illegal move: d5f4} 1-0