Correct answer: Kf8-e7 1.Kf8-e7 ! zugzwang. 1...Kd5-e5 2.Qd3-e4 # 1...Kd5-c5 2.Qd3-b5 # 2.Qd3-c4 # 1...Kd5-c6 2.Qd3-
