Puzzle of the day !!

White to play and win

Answer


The idea is to keep black's queen out of c1-h6 diagonal...1.Kf2! Qc1 2.Bd4 Qf4 3.Be5 Qc1 4.Kg3 Qe3 5.Bb2 and black's Queen can't longer stay in the h6 diagonal..and black is in complete zugzwang!