Correct answer: Nf41...Qe4 2.Qh8# 1.Rc4?? (2.Rc5#) 1...Qe4 2.Qh8# but 1...Bf4! 1.Nf8?? (2.Ng6#) 1...Bf4 2.Qe7# 1...Q:f5 2.Nc6# but