Correct answer: Qg4+1...Ke7/Kd7/f5 2.Q:d6# 1...Kf5 2.Qe4# 1.R:f7?? (2.Nd8#) but 1...K:f7! 1.Re8+?? 1...Kf5 2.Qe4# but 1...Kd7! 1.Nd8+
