Mezue ahịrịokwu na-esonụ: Keene esonyela n'ịhazi ọtụtụ asọmpi ikpeazụ nke World Championship. O mere ndokwa maka ọkara nke mbụ nke
Egwuregwu World Chess Championship 1986 n'etiti Kasparov na Karpov na London. Otú ọ dị, egwuregwu ahụ meriri ndị British Chess Federation (BCF) na, maka ihe ndị a na-akọwaghị, ọ gbara arụkwaghịm na BCF n'oge na-adịghị anya. Ọ haziri egwuregwu PCA World Championship nke 1993 n'etiti Kasparov na Nigel Short na London, nke ọ bụ otu n'ime ndị na-ekwu okwu gọọmentị yana Grandmasters Jonathan Speelman na Daniel King. Ọ bụ onye na-arụ ọrụ n'azụ 'Egwuregwu Brain', nke haziri egwuregwu World Championship na 2000 n'etiti Kasparov na Vladimir Kramnik. Otú ọ dị, mgbe egwuregwu ahụ gasịrị, ọ nọgidere na-enwe ihe nrite ahụ kama ego ọ kwenyere na ọ bụ ụgwọ ya site na ọdịda nke Egwuregwu Brain: Kramnik enwetaghị ya ruo 2008. Egwuregwu Brain mechara daa n'ọnọdụ esemokwu.