Mezue ahịrịokwu na-esonụ: N'oge asọmpi ikpeazụ ya, Chetverukhin natara ọlaọcha ọla ọcha na 1973 European Championship na Cologne, West Germany, na
1973 World Championships na Bratislava, Czechoslovakia. N'asọmpi abụọ ahụ, ọ gbara onye nke abụọ n'azụ Nepela.