Correct answer: Rf61...g4 2.Nf4# 1...Nc5 2.Nc7# 1...Nd4 2.c4#/Ne7# 1...Ncd8/Ne5/Ne7/Nb4/Nb8/Nca5/Na7 2.Ne7# 1.R:c6?? (2.Bg2#/Nb