Mezue ahịrịokwu na-esonụ: Portisch bụ Karpov nke abụọ na nke ikpeazụ ya
egwuregwu mmeri ụwa megide Kasparov n'afọ 1990. Na Hungary, Bobby Fischer nọ na-agwa Portisch na egwuregwu nile dị n'etiti Karpov na Kasparov bụ ndị a kpara akpa, ya mere Portisch jụrụ, n'okwu ahụ, "Gịnị ka m nọ ebe ahụ na-eme?"