Best chess players never to become World Champion - part one - Viktor Korchnoi - Chessentials

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Viktor Korchnoi, chess grandmaster – obituary

KARPOV - KORCHNOI 1978: The Inside Story (A Batsford chess book) by Keene, Raymond: Very Good Plus Paperback (1978) First Edition

Viktor Korchnoi Quote: “The aim was simple: to deprive Karpov of his favourite occupation – standing at the board, staring straight at his oppon”

Play NYT Chess Puzzle: Korchnoi Versus Karpov - The New York Times

Karpov - Korchnoi 1981 - Schachversand Niggemann

Anatoly Karpov vs Viktor Korchnoi World Championship Match (1981)

Karpov X Korchnoi Merano 81 Herbert Carvalho

Chess, Cheating and Yoghurt