Correct answer: Re4+1...Kd5 2.Rd6# 1.Rc6?? zz 1...Kd5 2.Rd6# but 1...Ke3! 1.Rb6?? zz 1...Kd5 2.Rd6# but 1...Ke3! 1.Ra6?? zz 1...Kd5
