Correct answer: Qc7-h7 1.Qc7-h7 ! danger: 2.Qh7*d3 # 2.c2*d3 # 1...d3*c2 2.Qh7*c2 # 2.d2-d3 # 1...Bd5-h1 2.c2*d3 + 2...K