Pedzisa mutsara unotevera: Pakukwirira kwebasa rake, Ribli akanga ari kaviri mukwikwidzi weWorld Championship, muna 1984 uye
1986 (mashoko omuzasi). MuLondon muna 1984, akapinda mumutambo wakakurumbira pakati peUSSR neRest of the World, achikunda mumwe wake weSoviet, Rafael Vaganian nemuganhu mudiki.