7. Garry Kasparov

With an IQ of 190, Garry Kasparov, the Russian grandmaster who holds the record for the longest reign as number one, is slotted at the seventh position. In the year 1985, this genius reached the pinnacle of glory by becoming the youngest world champion, dethroning the then champion Anatoly Karpov, at a tender age of 22. He continued to rule the world of chess and was recognized as the official world champion by the international chess federation for 8 continues years, until a dispute between him and the federation forced him to renounce his crown and form a rival Professionals Chess Association.

In the year 1997, he lost a chess match to a computer named ‘Deep Blue’. This defeat was his first at the hands of computer under standard time controls.

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