[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "rnb1kbnr/pppp1ppp/4p3/1q6/8/2B2N2/P1PPPPPP/RN1QKB1R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:29.333 UTC"] [GameStartTime "2025-06-23T15:43:28.878 UTC"] [PlyCount "4"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... Nc6 {+0.90 5/0 85 858716} 2. e3 {-1.65 6/0 86 1616743} Qxf1+ {-4.45 6/0 85 830493} 3. Kxf1 {+4.20 6/0 167 397086, Black makes an illegal move: b5f1} 1-0