Correct answer: Rd51.Ne6?? (2.Qe2#) but 1...Kd3! 1.Kg2?? (2.Qf3#/Qd4#) but 1...Kd3! 1.Ra2?? zz 1...Kd3/Kd5 2.Qd4# but 1...Ke5! 1.Rf5?
