Buuxi weedha soo socota: Yepez wuxuu ka mid ahaa wafdiga Ecuador ee dhowr tartan oo caalami ah iyo tartanno: Olombikada 16aad ee Chess ee Tel Aviv 1964,
17th Chess Olympiad ee Havana 1966, 18th Chess Olympiad ee Lugano 1968, Tartanka Furan ee Nice - 1974 (Capitan), Panamerican Tournament of Havana, 1968, Tartanka II "Apertura" - Bogotá, 1970, Tartanka "Ecopetrol - El Tiempo" - Bogotá, 1970, VIII Caribbean iyo Central America Zone Tournament FIDE, Bogotá <unk> 1972.