ANDERSSEN INTERFERENCE White makes the interference to avoid a stalemate by allowing a fight to the opposite King, which is met by a discovered mate by the same white piece. [Event "Aufgaben fur Schachspieler"] [Site "?"] [Date "1842.??.??"] [Round "?"] [White "A. Anderssen"] [Black "Mate in 4 moves"] [Result "*"] [SetUp "1"] [FEN "3BB2K/7p/7k/8/8/5P1p/7P/8 w - - 0 1"] [PlyCount "7"] 1. Bh5 Kxh5 2. Kg7 h6 3. Kf6 Kh4 4. Kg6# * You must activate JavaScript to enhance chess game visualization.