Correct answer: Re51...Ra6/Rc7/Rd7 2.Q:a6# 1...Nc5 2.Rd4# 1.Bb5+?? 1...Kb4 2.Qc3#/Bd7#/Be8# 1...K:d5 2.Qc6#/Qc4# but 1...Kb3!
