[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "rn1qkb1r/p2b1ppp/5n2/1BpP4/8/2N5/PP1P1PPP/R1BQK1NR b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:43:28.192 UTC"] [GameStartTime "2025-06-23T15:43:27.944 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.03+0.04"] 1... Nxd5 {-4.35 7/0 86 802020} 2. Qe2+ {+1.20 6/0 99 1488878, Black makes an illegal move: f6d5} 1-0