Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Site n'etiti afọ 1970 ruo n'etiti afọ 1980, Erika Belle bụ otu n'ime ndị na-egwu egwuregwu Dutch na-eduga. O meriri Dutch Women's Chess Championship ugboro atọ: 1975, 1980, 1981. Onye sonyere n'ọtụtụ asọmpi egwuregwu mba ụwa. N'afọ 1979, ya na Gertrude Baumstark keere ọnọdụ nke abụọ na asọmpi International Women's Chess na Nałęczów (asọmpi ahụ meriri Tünde Csonkics). N'afọ 1981, ọ nọ n'ọnọdụ nke abụọ n'azụ Nieves García Vicente na asọmpi Zonal Women's World Chess Championship na Benidorm, ekele nke ọ tozuru oke na asọmpi Interzonal. N'afọ 1982, e nyere ya aha FIDE International Women Master (WIM). Na 1982, Erika Belle sonyere na Women's World Chess Championship Interzonal Tournament na Bad Kissingen wee nọrọ n'ọnọdụ nke iri na otu.  Ajụjụ: Olee afọ atọ o meriri?
1975, 1980, 1981 Ndị na-eto eto