Correct answer: Rc81.Rc7+?? 1...K:a8 2.Qf3#/Qc6# 1...B:c7 2.Qa6# but 1...K:c7! 1.Rb6+?? 1...Kc7/Kc8 2.Qc6#/Qd8# but 1...K:a8! 1.
