<prompt> Qedela umusho olandelayo: UNajdorf wadlala izikhathi eziyishumi nanye e-Argentina kuma-Olympics e-Chess kusukela ngo-1950 kuya ku-1976. Wadlala ebhodini lokuqala emidlalweni engu-9 ye-Olympic Chess eDubrovnik ngo-1950 806, kanye naseHelsinki ngo-1952 1123, e-Amsterdam ngo-1954, eMoscow ngo-1956, eLeipzig ngo-1960, eVarna ngo-1962, eHavana ngo-1966, eLugano ngo-1968,  <response>: ISiegen ngo-1970, neHaifa ngo-1976. Ngesikhathi se-Olympiad eNice ngo-1974, wadlala ebhodini lesithathu. 