Correct answer: Nf5+1.B:e5+?? 1...Kb4 2.Qb2# 1...Kb6 2.N:d5# but 1...Nc3! 1.Bb4+?? 1...K:b4 2.Qb2# 1...Kb6 2.N:d5# but 1...Kd4! 1.