Correct answer: e3-e4 1.e3-e4 ! zugzwang. 1...Kd3*c4 2.Qe1-e3 danger: 3.b2-b3 # 2...b4-b3 3.Qe3-c3 # 1...b4-b3 2.e4-e5 zugzwang.
