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 "?"]
[Date "1926.??.??"]
[Round "?"]
[White "Reti"]
[Black "Bogolyubov"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "3r1bk1/ppq3pp/2p5/2P2Q1B/8/1P4P1/P6P/5RK1 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Bf7+ Kh8 2. Be8 { There is simply no good reply to this disruptive move. } 2... Rxe8 ( { Black can try to defend the back rank: } 2... Be7 3. Qf8+ Bxf8 4. Rxf8# ) ( { Also, black can try: } 2... h6 3. Qxf8+ Kh7 4. Bg6+ Kxg6 5. Qf5# ) 3. Qxf8+ Rxf8 4. Rxf8# 1-0