International Chess Federation on X: The famous Soviet, and then Swiss grandmaster Viktor Korchnoi was born #onthisday in 1931. A 10-time World Championship Candidate, he contested a Candidates final and two matches
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Viktor Korchnoi, first Russian chess grandmaster to defect from the Soviet Union
Chess grandmaster Viktor Korchnoi dies in Switzerland - SWI
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The champion of the world: Parapsychologists, sects and secret services: Remembering the most tense chess game in history, Culture
Casos y cosas del Ajedrez panameño
Viktor Korchnoi - The Soviet-Swiss Chess Grandmaster - Chess Player Profile
Garry Kasparov - The great Viktor Lvovich Korchnoi passed away today in Switzerland at the age of 85. His longevity as a top-level player and his fighting spirit were such that it
Selected Games of Viktor Korchnoi, with annotations by Korchnoi.
Open elite series
USSR Chess Championship - Wikipedia
Viktor Korchnoi World Chess Hall of Fame
1970 USSR Chess Championship - Wikipedia
Douglas Griffin on X: The 1981 World Championship match between champion Anatoly Karpov (USSR) & challenger Viktor Korchnoi (Switzerland), Merano, October-November 1981. (📷J. Cooke, V. Rastelli / Corbis.) #chess / X