Correct answer: b5-b6 1.b5-b6 ! danger: 2.b6-b7 # 1...Qa4-b3 2.Qe7-a7 # 1...Qa4*c6 2.Qe7-a7 # 1...Qa4-b5 2.Qe7-a7 # 1...<
