Correct answer: Nh51...f5 2.Re5# 1...Nc4 2.B:c4# 1...Nd3 2.c4# 1...Na4 2.c4#/Bc4# 1...Ne4 2.f:e4# 1.Nc3+?? 1...Kd4 2.Nf5# but 1...K:d6! 1.Nf5
