Correct answer: Nc81...Q:a4 2.B:a4# 1.e:d7?? (2.d8N#) 1...Q:a4 2.B:a4# but 1...N:d7! 1.Q:b5+?? 1...a:b5 2.Bd5# but 1...K:b5! 1.Nc8! (2.Ne5#/N