#230 [Rb4 does not win. The main line is, 1... Rb4!? 2.cxb4 a4
3.b5+ Kxb5 4.Ba3 c3 5.Re2! Kc4 6.f4 Kxd4 7.f5 exf5 8.e6 Kd3
9.e7 Bd7 10.Kf3 d4 11.Rh2 Kc4 12.Rh8 b2 13.Rb8 d3
14.Bxb2 cxb2 15.Rxb2 a3 16.Rb7 Be8 17.Ra7 Kb3 18.Ke3 a2
19.Kxd3 Kb2 20.Rb7+ Kc1 21.Ra7 =]
Ra7, Rb6, Rb5, Rd7, Rf7, Rg7, Rh7, Bd7, Kd7, Kb6, Kb5, a4, and Rc7
are just as good as the book solution Rb4 -- they all hold the game.
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