Correct answer: Kf71...c:b6 2.Rc4#/Rf8# 1...c6 2.Rf8#/Rb4# 1...c5 2.Rf8#/Rf6# 1.Kh5?? (2.Ng6#) but 1...Rh1+! 1.Kh7?? (2.Ng6#) 1...c:b6 2.Rc4#/