Correct answer: Nc21...Ne7+ 2.N:e7# 1.Nc2! (2.Rc5#/Nb4#) 1...K:c6/Nd7 2.Nb4# 1...N:c6/b:c6 2.Ne3# 1...Ne7+ 2.N:e7# 1...a5/g:f4 2.R