Sergey Karjakin was born in Kramatorsk on January 12, 1990. On August 20, 2002, at the international tournament in Sudak, he shocked the chess world by fulfilling his third and final GM norm, making him the youngest grandmaster in chess history, at the age of 12 years and 7 months (a record that still stands).
Sergey is a World Champion (under 12), he won boys' championships of Ukraine many times, and participated in two FIDE Grand Prix 2002 tournaments in Dubai and Moscow.
Sergey Karjakin was one of the seconds for Ruslan Ponomariov during his world championship match against Vassily Ivanchuk in 2002. In January 2005, he won the B group of the Corus Chess Tournament in Wijk aan Zee, and in April he became the first player born in the 1990's to enter the FIDE World Top 100 in rankings.
That year he also won the Young Stars of the World tournament, scoring 8.5 points out of 11. In the A-group of Corus Wijk aan Zee (2006) he finished with a plus score. His continued improvement has placed him 24th in the world on the October 2007 edition of the FIDE rating list.
In the most recent World Championship cycle, he reached the semifinals of the World Chess Cup (2007) before being eliminated by Alexey Shirov. Karjakin won Corus (2009).