Correct answer: Bc51...Rf6/Rff8 2.Ne7# 1...Re7 2.N:f4#/N:e7# 1...Rg7/Rh7/Nf5 2.N:f4# 1...Rc5 2.Nb6# 1...Rc3+/Rb8/Ra8/Rd8/Re