Garry Kasparov plays chess.
Garry Kimovich Kasparov ( Га́рри Ки́мович Каспа́ров , [ ˈɡarʲɪ ˈkʲiməvʲɪtɕ kɐˈsparəf ] ; born Garik Kimovich Weinstein , 13 April 1963 ) is a Russian chess grandmaster , former World Chess Champion , writer , and political activist , whom many consider to be the greatest chess player of all time . Kasparov became the youngest ever undisputed World Chess Champion in 1985 at age 22 by defeating then-champion Anatoly Karpov .