<prompt> Tlatša polelo ye e latelago: Orestes Rodríguez Vargas yo a belegwego ka 4 Julae 1943 ke Peruvian Grandmaster GM 1978, yo a emetšego Spain go tloga ka 1982, mofenyi wa Peruvian Chess Championship gahlano 1968, 1969, 1970, 1971, 1972, Chess Olympiad motho wa go thopa sefoka sa silifera  <response>: 1978, sefoka sa Pan American Chess Championship 1970. 