Correct answer: Nf41...K:e5 2.Bb2# 1...Nab5/Nc6/Nac8 2.Nc6# 1.Nf4! (2.Bb2#) 1...Nab5 2.Nc6# 1...Ne4/N:c4/Ndb5 2.R:e4# 1...