Correct answer: Ng41.Nd7?? zz 1...Kf4/Kg4 2.Qf3# 1...Kg6 2.Qf6# 1...Ke4/Ke6 2.Qe5# but 1...g4! 1.Nc6?? zz 1...Kf4/Kg4 2.Qf3# 1.