In the history of the Chess World Championships Viktor Korchnoi is an extremely successful player, even if he was ultimately denied the title. If you count the 1974 Candidates Final for challenging Fischer, he played three ‘World Championship matches’. The era of Korchnoi’s participations in the WCh cycle stretches from the Curacao Candidates Tournament in 1962 to the 1991 quarterfinal match against Timman, which he played at the age of 60. The dramatic fight against Anatoly Karpov in Baguio City in 1978 stands out in particular: hypnosis, cheating accusations with blueberry yoghurt, X-ray examinations on chairs, mirror glasses worn at the board, Korchnoi’s comeback to 5-5 after trailing 4-1 are a few of the external circumstances involved!