Correct answer: Qf31...Nf7 2.Q:f7# 1.Qf7+?? 1...Ng6 2.Q:g6# but 1...N:f7! 1.Qf3! (2.Qh1#/Q:g4#) 1...Ng6/Bg1/Be7 2.Q:g4# 1...N
