Rook Ending
White to move and win Highlight below to see solution [ Correa (2320) - Tsuboi (2315) Brasil (ch), 1990 White mistakenly played 1.Rf5? [ Winning was 1.g4! Rh1 2.Rg7 Kc5 3.Rxb7 Re1+ 4.Kf5 Kd4 ( 4...Rf1+ 5.Kxg5 Kxd5 6.Re7) 5.Rd7!+-] 1...Kc5 2.g4 Rh1 3.Rxg5 b5 4.d6 b4 5.Ke6+ Kc6 6.Rd5 Rh6+! 7.Ke5 Kd7 8.g5 Re6+ 9.Kf5 Rxd6 10.Re5 b3 11.g6 b2 12.Re1 Rc6!= 13.Rb1 Ke7 14.Kg5 Kf8 1/2-1/2 ]