 Nyora kupfuurira kweiyi ndima - Dzimwe nguva zvinhu zvinoshanda zvinorangarirwa. Muna 1977 Viktor Korchnoi neyaimbova World Champion Tigran Petrosian vakatamba mitambo gumi nembiri yequarter-final Candidates Match kuti pakupedzisira vaone uyo anokwikwidza 1978 World Championship. Pashure pemitambo gumi nerimwe Korchnoi akanga achitungamirira nepfungwa imwe, saka aingoda chete dhiza mumutambo wokupedzisira kuti afambire mberi kumasemi-fainari. Korchnoi, saVatema, akanga achikunda mutambo uyu asi akapa dhivi pashure pokufamba 40. Maererano naEdmar Mednis, chakanga chiri chinhu chakanaka uye chinoshanda chokuita. Korchnoi akapfuurira kunetsa pasina kubudirira Anatoly Karpov nokuda kweWorld Championship. 