Correct answer: Nb21...Kc6/Ka6 2.Nbc5# 1.Nac5[A]? (2.Nd6#) but 1...Kc4! 1.Qe8+?? 1...Ka6 2.Nbc5#/Qc6#/b5#/Nac5#[A] but 1...Kc4! 1.Nd6+?