Mezue ahịrịokwu na-esonụ: Eduard Prandstetter nwetara ihe ịga nke ọma kasịnụ n'ọrụ egwuregwu chess ya na 1976 na 1978 mgbe o meriri ugboro abụọ na Czechoslovak Chess Championship. N'afọ 1985 na Taxco, o sonyere na
World Chess Championship Interzonal Tournament ebe ọ nọ n'ọkwa nke iri na anọ.