Youngest ever World Chess Champion in 1985. Held the official FIDE world title until 1993. In 1993, a dispute with FIDE led Kasparov to set up a rival organisation, the Professional Chess Association. He continued to hold the "Classical" World Chess Championship until his defeat by Vladimir Kramnik in 2000.
Kasparov's ratings achievements include being rated world #1 according to Elo rating almost continuously from 1986 until his retirement in 2005; and holding the all time highest rating of 2851. He also holds records for consecutive tournament victories and Chess Oscars.Announced his retirement from professional chess in 2005, choosing instead to devote his time to politics and writing.Front leader of Other Russia opposed to Putin.