1.Rb6+! Ka5 2.Rb5+! Ka4 3.Rb4+! Ka3 4.Rb3+! Ka2
5.b8Q Rh8+ 6.Ke7 Rxb8 7.Rxb8 h3 8.Rf8! h2
9.Rf2+ Kb3 10.Kf6 Kc3 11.Kf5 Kd3 12.Kf4 =