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 "Averbakh"]
[Black "Study"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "B7/8/K7/2k5/8/2P5/8/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Black's king threatens to play 1. ... Kc4, winning White's last pawn. A draw
would result, because a king and bishop alone cannot checkmate. Therefore,
the first move is forced. } 1. Bd5 Kxd5 2. Kb5 Kd6 3. c4 Kc7 4. Kc5 { A key
move in this study. White must lead his pawn down the board. } 4... Kd7 5. Kb6 Kc8 6. c5 Kb8 7. c6 Ka8 { Hoping for 8. c7 stalemate. } 8. Kc7 Ka7 9. Kd7 Kb8 10. c7+ Ka7 11. c8=Q { White wins with a large material advantage. } 1-0