Karpov's Early Endgame

Former world champion Anatoly Karpov, born in 1951, started playing chess at age 4, and joined the Zlatoust Pioneer's Palace around age 9.  There were many endgames in his early games, and here is one example.  Both sides missed chances to win, lose, or draw, but Karpov finally prevailed and won the endgame, despite some mistakes.  Not bad for a 9 year old.  White to play.