The advantage of the two bishops (when facing a bishop and knight or two knights) is a favorite of many masters. When working together, the two bishops can really dominate the chessboard.
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[Event "rated untimed match"] [Site "Sousse"] [Date "1967.??.??"] [Round "?"] [White "Byrne"] [Black "Korchnoi"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "5k2/pp3pnR/q2pb1p1/6P1/5P2/1NQ5/rPP3P1/1KR5 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... Ra1+ 2. Nxa1 Ba2# 0-1