Get closer to the endgame. With fewer pieces left in the position, the dominance of the two bishops can really be felt, as they can control both sides of the board at once. If the enemy knight doesn't have a secure outpost to use, it can find itself passive and restricted in its own territory.
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[Event "rated untimed match"] [Site "?"] [Date "1914.??.??"] [Round "?"] [White "Capablanca"] [Black "Bernstein"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "3r2k1/p4ppp/1q6/2rn4/8/2N1P3/P1R1QPPP/2R3K1 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... Nxc3 2. Rxc3 Rxc3 3. Rxc3 Qb2 { An excellent move in every way. } 4. Rd3 ( { White can try: } 4. Rc2 Qb1+ 5. Qf1 Qxc2 { Black wins with a large material advantage. } ) 4... Qb1+ 5. Qf1 Qxf1+ 6. Kxf1 Rxd3 { Black wins with a large material advantage. } 0-1