The Los Angeles Times Los Angeles, California Friday, July 23, 1971 - Page 34
Ex-Champion Wins In Chess
(Reuters) Moscow — Former world chess champion Tigran Petrosian Thursday defeated grand master Victor Korchnoi in the ninth game of their contenders semifinals match for the world title.
The official Soviet news agency, Tass, said Petrosian now leads the series by five games to four.
The 10th game is to be played next Saturday. It will be enough for Petrosian to draw to win the right to play in the finals of the challengers tournament against Robert Fischer of the United States.