Pedzisa mutsara unotevera: Pakukwirira kwebasa rake, Ribli akanga ari kaviri mukwikwidzi weWorld Championship, muna
1984 na1986. MuLondon muna 1984, akapinda mumutambo wakakurumbira pakati peUSSR neRest of the World, achikunda mumwe wake weSoviet, Rafael Vaganian nemuganhu mudiki.