Wrong Bishop

Wrong Bishop

White wins because Black has the wrong bishop

White wins in this position. The defender has the wrong bishop if it is on the same color as the corner where his king is confined. Black's bishop is on the wrong color of square for it to form a fortress in the corner (i.e. with the black king on the h8 square and the bishop on the g8 or h7 square). White wins:

1. Kf5! Kg8
2. Ra4!! The only way to win. If 2. Kg6? Kf8 and the black king is able to get out of the "dangerous corner" or "wrong corner" and head to a "safe corner" or "right corner" where he can set up the fortress.
2... Be1
3. Kg6 Kf8
4. Rf4+!, followed by 5. Re4, winning (Dvoretsky 2006:235,366).

Read more about Wrong Bishop:  Rook and Bishop Pawn Versus Bishop, Rook and Pawn Versus Bishop and Pawn, See Also

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