Chess Puzzles

White to move - mate in 1

#133 Chess: 5334 Problems, Combinations, and Games by László Polgár

Puzzle rating: 1022

[FEN "5K1k/7p/8/8/8/8/7B/8 w - - 0 1 KQkq - 0 1"] [NAVIGATION "0"] [CUSTOM_MOVE "1"] 1. Be5#