Correct answer: Qa41...f5 2.Ne5# 1...Nh3+ 2.g:h3# 1...Nf3+ 2.g:f3# 1...Nf7/Ne4/Ne6 2.Qf5# 1.Bf7?? zz 1...f5 2.Ne5# 1...Nh3+ 2.g:h3# 1...Nf3+ 2.g:f3