Correct answer: Re61...c5 2.Rd6# 1.Be7?? zz 1...c5 2.Rd6# but 1...c6! 1.Kf5?? zz 1...c5 2.Rd6# but 1...c6! 1.Ra5+?? 1...c5 2.R:c5# but 1...Kc6! 1.R