Tigran Petrosian, Georgian-Armenian chess player (born 1929)

Tigran Petrosian

Soviet-Armenian chess grandmaster (1929–1984)

Tigran Vardani Petrosian was a Soviet-Armenian chess grandmaster. The ninth World Chess Champion from 1963 to 1969, he was nicknamed "Iron Tigran" due to his almost-impenetrable defensive playing style, which emphasized safety above all else. Petrosian is often credited with…