Garry Kasparov | 190
When he was 22 years old, Kasparov became the youngest undisputed World Chess Champion. An impressive feat, considering the experienced players he had to go up against. He played eight Chess Olympiads throughout his career. In 2005, he retired from professional chess. From 1984 until his retirement, he was ranked world No. 1 for 255 months overall for his career. His passion for chess started when his parents posed a chess problem and he managed to find a solution for it.
Kasparov was only 10 years old when he began training under chess grandmaster Mikhail Botvinnik’s at the latter’s chess school. He worked until he was able to compete internationally. After retiring from chess, Kasparov made investments in other endeavors, such as serving as Chairman of the Human Rights Foundation in 2011. In case you didn’t know, his IQ score is staggering at 190.