Correct answer: Nf51...Ncd3/Nb3/Nb7/Na4/Na6 2.e4# 1...Ne6 2.Qe4# 1.R:d7+?? 1...N:d7 2.Qe4#/e4# but 1...R:d7! 1.Q:d7+?? 1...N:d7 2.e4#