Cutting the Knight Off with the Bishop
White to play and win
PlayThe bishop's real weapon against a knight is range. By fencing off the squares the knight must cross, you cut it away from the pawn entirely and walk the passer home.
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Cutting the Knight Off with the Bishop
Win against perfect defense
Waking the engine…
The theory
A knight is a short-range piece, and a bishop can use its reach to wall the knight off from the action. This cut-off is the key technique when converting bishop and pawn against a knight.
Build the barrier. Put the bishop on a diagonal the knight must cross to reach the pawn. The knight needs several hops to get around it, and by then the pawn is gone.
Escort behind the wall. With the knight sealed off, your king and pawn advance without interference toward the queening square.
Mind the hops. Deny the knight any square that would let it slip through or fork you. Hold the cut-off and the pawn promotes.