[Event "?"] [Site "?"] [Date "2025.05.19"] [Round "1"] [White "Integral-base"] [Black "Integral-dev"] [Result "0-1"] [FEN "r2qkb1r/ppp1nppp/2n5/1B1ppb2/8/1PN1PN2/PBPP1PPP/R2QK2R b KQkq - 0 1"] [GameDuration "00:00:01"] [GameEndTime "2025-05-19T02:52:16.774 UTC"] [GameStartTime "2025-05-19T02:52:15.615 UTC"] [PlyCount "2"] [SetUp "1"] [Termination "illegal move"] [TimeControl "9.21+0.09"] 1... a6 {+1.11 17/31 461 213665} 2. Rc1 {White makes an illegal move: a2a3} 0-1