Correct answer: Rg5*g6 1.Rg5*g6 ! zugzwang. 1...Kh3-h4 2.Rg2-g5 zugzwang. 2...Kh4-h3 3.Rg5*h5 # 1...h5-h4 2.Rg2-g4 zugzwang.
