[Event "?"] [Site "?"] [Date "2025.07.14"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "rnbqkb1r/ppp2ppp/3p4/3np1P1/8/1QPP4/PP2PP1P/RNB1KBNR b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-07-14T03:26:17.461 UTC"] [GameStartTime "2025-07-14T03:26:17.156 UTC"] [PlyCount "1"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.019+0.04"] 1... Nb6 {+0.55 13/13 130 1234499, White makes an illegal move: b7b5} 0-1