The 1993 World Chess Championship was one of the most controversial matches in chess history. Incumbent World Chess Champion Garry Kasparov and official challenger Nigel Short split from FIDE and played their title match under the auspices of the Professional Chess Association (PCA). In response, FIDE stripped Kasparov of his title and held a separate title match between Anatoly Karpov and Jan Timman.
Sponsored by The Times newspaper, the PCA match was held in London from September to October 1993. Garry Kasparov won convincingly (+6−1=13), marking the largest margin of victory in a world title contest since Botvinnik defeated Tal in 1961. For the first time in history, there were two rival World Chess Champions, a situation that persisted until the World Chess Championship in 2006.