Tusi se faʻaauau mo lenei palakalafa - Yepez sa avea ma vaega o le Ecuadorian sui i le tele o faʻavaomalo siamupini ma taʻamilosaga: 16th Chess Olympiad o Tel Aviv 1964, 17th Chess Olympiad
O le taamilosaga o le Havana 1966, 18th Chess Olympiad o Lugano 1968, Open Tournament of Nice - 1974 (Capitan), Panamerican Tournament of Havana, 1968, II Taamilosaga "Apertura" - Bogotá, 1970, Taamilosaga "Ecopetrol - El Tiempo" - Bogotá, 1970, VIII Caribbean ma Amerika Tutotonu Zone Taamilosaga FIDE, Bogotá <unk> 1972.