Correct answer: Nf41...Nb4/Nc1 2.Qb2# 1...Nc3 2.Qe3# 1.Ne3?? (2.Nc2#/Rd5#) 1...Nc3 2.Nc2# but 1...Nb4! 1.Qf4+?? 1...Be4 2.Qe3#