Three famous chess grandmasters are Bobby Fisher, Garry Kasparov and Veselin Topalov.
William Stientz.(I might have misspelled his name)
Mikhail tal was a Lativian-Soviet player and he was born in riga lativia
Anatoli Karpov
By beating rated opponents in rated tournaments, you must get you U.S.C.F. rating above 2500. If you achieve 2500, but your rating drops below 2500, you remain a grandmaster.