Correct answer: Nb41...Ka6 2.b8N# 1.b8Q+?? 1...Ka6 2.Qb7#/Qb6#/Qb5#/Qa8#/Qc8#/Qa7#/Ra7#/Nc7#/Nb4# but 1...K:b8! 1.Bg1+?? 1.
