Correct answer: Ne71...c2 2.Bb2# 1...R:f3 2.N:f3# 1.N:f4?? (2.Rd5#) 1...c2 2.Bb2# 1...f:e5 2.Q:b6# but 1...Ne6! 1.Ne7! zz 1...K:e5 2.Q:f6#
