Correct answer: Qb51...Bc5 2.Rf4#/Rfe6# 1.Rf5+?? 1...Kc5 2.Rc6# but 1...e5! 1.N5e3+?? 1...Ke5 2.Ng4#/Nc4# 1...Kc5 2.Qc4# but 1...e:d6!