Correct answer: b41...Kf6 2.Rg8# 1.Rg4+?? 1...Ke6 2.Rg6# but 1...Kd6! 1.Rc7+?? 1...Kd6 2.Rc6# but 1...Kf4! 1.b4! zz 1...Kf4 2.Rg4#
