Correct answer: Qh6-h1 1.Qh6-h1 ! zugzwang. 1...Rg7-g1 2.Qh1-h7 # 1...Rg7-g2 2.Qh1-h7 # 1...Rg7-g3 2.Qh1-h7 # 1...Rg7-g4
