Correct answer: Rc51...Nd5 2.Nd6# 1...B:c4 2.R:e5# 1...Bc6/Bd7/Be8/Ba4 2.R:e5#/Nd6# 1.R:b5?? (2.R:e5#/Nd6#) 1...Nf5 2.R:e5# 1.