Classical World Chess Championship 1995 and formed a rival organisation, the PCA (Professional Chess Association). In response, FIDE stripped Kasparov of his status and organised an event to determine a new champion — this event was won by Anatoly Karpov. Kasparov claimed that, as he had not been defeated by a challenger to his title in a match, and in fact had defeated the rightful challenger (Nigel Short in 1993), that he was still the reigning world champion. Thus, for the first time since the inaugural World Championship in 1886, there were two rival World Chess Championships. The PCA ran a world championship cycle similar
World Chess Championship 1963 title in 1966, before losing the title to Boris Spassky in 1969. World Chess Championship 1963 At the World Chess Championship 1963 Tigran Petrosian narrowly qualified to challenge Mikhail Botvinnik for the World Chess Championship, and then won the match to become the ninth World Chess Champion. The cycle is particularly remembered for the controversy surrounding the Candidates' Tournament at Curaçao in 1962, which resulted in FIDE changing the format of the Candidates Tournament to a series of knockout matches. The world championship cycle was under the jurisdiction of FIDE, the World Chess Federation, which set the structure for the