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 "????.??.??"] [Round "?"] [White "Unknown"] [Black "Unknown534"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "4r1k1/1p1R2p1/5q1p/1p6/1P6/P5QP/4r1P1/3R2K1 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... R8e3 2. Qg4 Re1+ 3. Rxe1 Rxe1+ 4. Kh2 Qe5+ { White dare not try: } 5. g3 ( { White can try: } 5. Qg3 Rh1+ 6. Kxh1 Qxg3 { Black wins with a large material advantage. } ) 5... Qb2+ 6. Rd2 Qxd2+ 7. Qe2 Qxe2# 0-1