Correct answer: Re81...c6/c5 2.R:c6# 1.Rb8?? zz 1...c5 2.Rb6# but 1...c6! 1.Ra8?? zz 1...c5 2.Ra6# but 1...c6! 1.Rd8?? (2.Qd5#) but 1...c6! 1.Re8! zz 1..
