Correct answer: Qg8-g4 1.Qg8-g4 ! zugzwang. 1...Kf2-g1 2.Qg4-f3 zugzwang. 2...Kg1-h2 3.Qf3-h1 # 1...Kf2-g2 2.Qg4-d1 zugzw