Correct answer: Qf11...Rd5 2.Qf4# 1.Qf4+?? 1...Kd5 2.Qc4# but 1...K:f4! 1.Qf1! zz 1...Kd5 2.Qc4# 1...Re6/Re7/Re8/Rc5/Rb5/R