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 "correspondence"]
[Site "?"]
[Date "1957.??.??"]
[Round "?"]
[White "Lyskow"]
[Black "Persitz"]
[Result "1-0"]
[BlackElo "unknown"]
[ECO "B01"]
[TimeControl "0"]
[WhiteElo "unknown"]
1. e4 { B01: Scandinavian Defence } 1... d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 { White develops a complex highly tactical game rather than resolve tensions
in the center of the board. This is properly known as the Goteborg System,
Lasker Defense, or Michel Attack variations. } 5... Bg4 { Black rushes to develop
pieces that tie white's hands. } 6. Bb5+ { The purpose of this move (instead of
the immediate 6. Be2) is to prevent the natural development of black's
Queen-Knight to c6. Now 6... Nc6 runs into 7. Bxc6 giving black an
uncomfortable position. Alternatives are poor. For example, 6... Nd7? 7.
Bxd7 Bxd7 8. Nxe5 or 6... Bd7? 7. Qe2 Bb4 8. Qxe5+ (picking up a good center
pawn) Kf8 9. 0-0! Bxc3 10. bxc3 Bxb5 11. a4! Nc6 12. Ba3+ with advantage to
white. } 6... c6 7. Be2 Bb4 8. O-O { What a relief to get one's king castled to
safety on such an open board. Black has no time to pick off a pawn with such
a volatile center. 8... Bxc3? 9. bxc3 Qxc3 10. Nxe5! } 8... Bxf3 9. Bxf3 { Now 9...
Bxc3 might be OK. } 9... Ne7 10. dxe5 { Now 10... Bxc3 might be OK. } 10... O-O 11. Bd2 Qxe5 { Opening the e-file gets White a lot of play. } 12. Re1 { Both 12... Qf6
13. Ne4, and 12... Qf5 13. Be4 give white an easy game. } 12... Qc7 $2 13. Nb5 $1 cxb5 14. Bxb4 Re8 15. Rxe7 Rxe7 16. Bxe7 Qxe7 17. Bxb7 $1 { The crowning
sacrifice. The whole point of this combination beginning with 13. Nb5! Game
over man! } 1-0