Correct answer: Qg81.Nd7+?? 1...Kd5 2.Qg8# but 1...Kc4! 1.Na4+?? 1...Kc4 2.Qg8# but 1...Kd5! 1.Qg5+?? 1...Kc6 2.Qd5# 1...Kd6 2.Q<