Correct answer: Qd81...f6 2.Nc4# 1...Rf6 2.b8Q#/b8B# 1.Qc7+?? 1...K:e6 2.Qd6# but 1...Kf6! 1.Qb8+?? 1...K:e6 2.Qd6# but 1...Kf6! 1.Q