Correct answer: N:c51...f4 2.R:c5#/Q:c3#/B:f6# 1.N:c3?? (2.Ne2#) 1...Kf4 2.Nd5# 1...f4+ 2.Nce4# but 1...Rg4! 1.N:c5! (2.Ne6#) 1...Kf4 2.