<prompt> Orestes Rodríguez Vargas akaberekwa musi wa4 Chikunguru 1943 ndiPeruvia Grandmaster GM 1978, uyo anomiririra Spain kubvira 1982, kashanu-nguva Peruvian Chess Championship mukundi 1968, 1969, 1970, 1971, 1972, Chess Olympiad munhu sirivha menduru mukundi 1978  <response>: , akahwina menduru yePan American Chess Championship 1970. 