[Event "?"] [Site "?"] [Date "2025.07.14"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "rn1qk1nr/pbp2ppp/1p2p3/3p4/1bP1P3/2NP1P2/PP2N1PP/R1BQKB1R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-07-14T03:22:48.589 UTC"] [GameStartTime "2025-07-14T03:22:48.257 UTC"] [PlyCount "1"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.05+0.04"] 1... d4 {+0.45 13/13 124 1443032, White makes an illegal move: b2c1} 0-1