1.Kc2! With this move white prepares piece sacrifice. Try : Not good 1.Bc3+ Kh7 2.Kc2 Because of 2...Rb1! 3.Be4+ Kg8! 4.Kxd2 Rxb6=   1...Rc1+ 1...Rb1 2.Kxd2 Rb5 3.Bc4!! Rb2+ 4.Kc1+-   2.Kxd2 Rc5!  3.Bc4!! Offering sacrifice of 1 of 2 bishops, but in different position Try : 3.Bc3+ Kg8! 4.Ba2 and now Black draws by sacrificing his rook for c3 bishop with drawn different colors bishops, for example : 4...Bg5+ 5.Kd3 Rxc3+ 6.Kxc3 Kf8! 7.Kc4 Ke7 8.Kb5 Bf4 9.Ka6 Kd8!=   3...Rxc4 3...Rxa5 4.b7 Bg3 5.e7+- 3...Rc8 4.b7 Rb8 5.Bd5+-   4.b7! Bg3 5.e7 Re4 6.Bc3+! Kh7 7.Be5!! Bxe5 Also Main line : 7...Rxe5 8.b8Q Rd5+ 9.Kc2! The only place for the king a) 9.Ke2? Bxb8 10.e8Q Re5+=; b) 9.Kc1? Bxb8 10.e8Q Bf4+! and black consolidates his pieces and defends both on the rook and the bishop : 11.Kb1 (or 11.Kc2 ) 11...Rf5=; c) 9.Kc3 Bxb8 10.e8Q Be5+ 11.Kc4 Rd4+! 12.Kc5 Bg7=; 9...Bxb8 10.e8Q and Black must lose his bishop or rook, for example : 10...Rc5+ 11.Kd3 Rd5+ 12.Kc4! Rf5 13.Qxb8+-    8.Kd3!! 8.e8Q? Bf4-+    8...Re1 9.e8Q+-