Correct answer: Qf1-c4 1.Qf1-c4 ! zugzwang. 1...Nf2-g4 2.Qc4*g4 # 1...Nf2-h1 2.Qc4-g4 # 1...Nf2-h3 2.Qc4-g4 # 1...Nf2-e4
