The Courier-Journal Louisville, Kentucky Monday, July 05, 1971 - Page 62
Soviet Chess Challengers Tie In Opening Semifinal
Moscow(AP) — Soviet grandmaster Victor Korchnoi and former world champion Tigran Petrosyan of Russia tied last night on the 36th move of their opening match in the semifinal round of the World Chess Challengers Tournament.
The winner of the best-of-10 series will move into the finals for a chance to face current world champion Boris Spassky of the Soviet Union next spring.
Korchnoi and Petrosyan play their second game Tuesday. The other semifinal, pitting Bobby Fischer of Los Angeles against Denmark's Bent Larsen, begins Tuesday at Denver, Colo.