The Sacramento Bee Sacramento, California Wednesday, July 28, 1971 - Page 17
Petrosian Wins World Chess Semifinal Test
Moscow (UPI)— Former world champion Tigran Petrosian won his world semifinal chess match against Viktor Korchnoi when their 10th and final game ended in a draw, the Tass news agency said.
Petrosian will meet American Bobby Fischer in September to determine who will play reigning world champion Boris Spassky for the title in 1972.
The final score was 5.5 to 4.5 points. The two grandmasters played eight successive draws. Petrosian broke the deadlock by winning the ninth game and needed only a draw in the tenth to ensure victory.
The tenth game drew on the 41st move.
Korchnoi, playing white, used the king's pawn variation of the Catalan opening.