Kasparov rose quickly with the FIDE entire world rankings. Resulting from an oversight with the USSR Chess Federation, which thought that a grandmaster Event in Banja Luka, Yugoslavia, was for juniors, he participated in that occasion in 1979 whilst still unrated. He was a alternative for that Soviet defector https://financefeeds.com/tns-adds-support-to-ltses-memoir-market-data-feeds/