Bishop and Knight Mate: The Final Corner
White to play and win
PlayBishop and knight against a lone king is the hardest basic checkmate, but it is always a win. Here the defender is already near the edge, so your task is to steer the king into the one corner your bishop controls.
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Bishop and Knight Mate: The Final Corner
Win against perfect defense
Waking the engine…
The theory
Bishop and knight versus king is the checkmate every serious player is expected to know and the one most often botched under pressure. It is a forced win, but only into a corner the bishop can attack.
The key rule. Mate is possible only in a corner of the bishop's color. A light bishop drives the king to a light corner, a dark bishop to a dark corner. Aim there from the first move.
The method. Your king and bishop form a barrier, the knight covers the squares the bishop cannot, and the three attackers herd the defender step by step along the edge into the fatal corner.
In this drill you start close to the finish, so precision matters most: the tablebase defender takes the longest possible route and punishes any wasted tempo.