Correct answer: Qg2-h1 1.Qg2-h1 ! zugzwang. 1...Nf6-d5 2.Qh1-e4 # 1...Nf6-e4 2.Qh1*e4 # 1...Nf6*g4 2.Qh1-e4 + 2...N<