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 "????.??.??"] [Round "?"] [White "Stepanov"] [Black "Romanovskij"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "r1b5/p2p2kp/1pn1p3/8/1PP1K3/P4r2/2Q4P/5B2 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... d5+ 2. cxd5 ( { White can try: } 2. Kxf3 Nd4+ 3. Kf2 Nxc2 { Black wins with a large material advantage. } ) 2... exd5+ 3. Kxd5 Be6+ 4. Ke4 ( { White can try: } 4. Kxe6 Nd4+ 5. Kd6 Rf6+ 6. Ke5 Nxc2 { Black wins with a large material advantage. } ) ( { White can also try: } 4. Kxc6 Rc8+ 5. Kd6 Rxc2 6. Bg2 Re3 7. Bc6 Rd3+ 8. Kxe6 Rxc6+ { Black wins with a large material advantage. } ) 4... Bf5+ 5. Kxf3 Nd4+ 6. Kf4 Nxc2 { Black wins with a large material advantage. } 0-1