[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "r2qkbnr/1b1npp1p/p1pp2p1/1p6/3PP1P1/2N1BP2/PPPQ3P/2KR1BNR b kq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:37.615 UTC"] [GameStartTime "2025-06-23T15:43:37.233 UTC"] [PlyCount "3"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... b4 {-1.00 5/0 85 493439} 2. Nb1 {+0.20 6/0 99 1038114} Qb6 {-1.10 6/0 85 1395689, White makes an illegal move: c3b1} 0-1