Correct answer: Rg3-g8 1.Rg3-g8 ! zugzwang. 1...Rg2-h2 2.Rg8*g1 # 1...Ng1-h3 2.Qa2-e2 # 1...Ng1-f3 2.Qa2-e2 # 1...Ng1-e2
