Boris Spassky was a Soviet chess grandmaster who was World Chess Champion from 1969 to 1972 until he lost the title to Bobby Fisher.
He learned chess when he was 9 years old, joined a chess club and his great talent was soon recognized.
1966 he qualified to challenge Tigran Petrosian for the first time, but lost the match 11,5−12,5 (3 wins, 4 losses, 17 draws)
Two years later in 1968 he qualified again winning the Candidates tournament and challenged Petrosian again in 1969. Spassky was better prepared this time and won the match 12,5−10,5 (6 wins, 4 losses, 13 draws) and became world champion.
Tigran Petrosian faces his own opening system and outplays his opponent with his trademark exchange sacrifice!