[Event "?"] [Site "?"] [Date "2025.05.19"] [Round "1"] [White "Integral-base"] [Black "Integral-dev"] [Result "0-1"] [FEN "r1bqkb1r/pp3ppp/2n2n2/2p1p3/2PpP3/3P2P1/PP2NPBP/R1BQK1NR b KQkq - 0 1"] [GameDuration "00:00:01"] [GameEndTime "2025-05-19T02:51:42.187 UTC"] [GameStartTime "2025-05-19T02:51:40.602 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "9.84+0.1"] 1... b5 {+1.21 19/37 760 314748} 2. a3 {White makes an illegal move: a1c1} 0-1