Correct answer: Qe51...Bg4 2.f:g4# 1...Nh3/Nh7/Nf7/Ne6 2.Ng3#/Qh4# 1...N:f3/N:e4 2.Qh4# 1.f4+?? 1...Nf3 2.Qh4# but 1...Bg4! 1.Q:f5?
