[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "r1b1k1nr/1pppqppp/p1n5/2b5/3BP3/2N2N2/PPP2PPP/R2QKB1R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:33.702 UTC"] [GameStartTime "2025-06-23T15:43:33.352 UTC"] [PlyCount "3"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... Nxd4 {-0.45 6/0 84 1333187} 2. Nxd4 {-0.65 6/0 136 922264} d6 {-0.20 5/0 85 1111765, White makes an illegal move: f3d4} 0-1