Correct answer: Ke4-e3 1.Ke4-e3 ! danger: 2.Qc6-a8 # 2.Qc6-b7 # 1...b2-b1=Q 2.Qc6-a8 # 1...b2-b1=R 2.Qc6-a8 # 1...d2-d1=