Play Like A World Champion: Petrosian and Spassky - Chess Lessons

In 1963 Tigran Petrosian unseated Botvinnik as World Champion for the final time. Petrosian was a defensive genius and held his title again in 1966 against Boris Spassky. In 1969 Spassky won another candidates cycle and defeated Petrosian to take the title.

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Bonus Pod - Recapping the book Bobby Fischer Goes to War with guest co-host Chris Wainscott [Chess Books Recaptured Series] — The Perpetual Chess Podcast

World chess champion hi-res stock photography and images - Alamy

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The Petrosian-Spassky World Championship Match (Moscow, 1966), with annotations by Tal, Boleslavsky, Bondarevsky, etc.

Tigran Petrosian vs Boris Spassky, World Chess Championship 1966

Petrosian could have held!

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Tigran Petrosian (June 17, 1929 – August 13, 1984) - Chess Giants - CHESS POWER