Mezue ahịrịokwu na-esonụ: A napụrụ Garry Kasparov aha FIDE ya mgbe ya na onye na-ama ya aka Nigel Short kewapụrụ na FIDE na 1993. Anatoly Karpov, onye bụbu onye mmeri na onye na-ama aka na
1990 FIDE World Chess Championship match, ka a mara ọkwa dịka onye mmeri ụwa.