Garry Kasparov

Garry Kimovich Kasparov 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. From 1986 until his retirement in 2005, Kasparov was ranked world No. 1 for 225 out of 228 months.p
Yet 20 years on Garry Kasparov is still considered the greatest chess player in history, a genius so special he became world champion at 22 and was then almost invincible for two decades. Now, 12 years after he turned his back on the professional game, the king is back.The study found that intelligence was linked to chess skill for the overall sample, but particularly among young chess players and those at lower levels of skill. This may be because the upper-level players represent a winnowed distribution of cognitive ability -- in other words, they all tend to be fairly bright.