Correct answer: Nc81...Nh6 2.R:e7# 1...N:c6 2.B:c6# 1...Nd7 2.c:d7# 1...Na6 2.c7# 1...Bf8 2.Nc7# 1.Bc2?? (2.Bg6#) 1...Nh6 2.R:e7# but 1...N