The Chess World Cup 2015 was a 128-player single-elimination chess tournament held in Baku, Azerbaijan, from 10 September to 5 October 2015.

Sergey Alexandrovich Karjakin is a Russian chess grandmaster. A chess prodigy, he previously held the record for the world's youngest ever grandmaster, having qualified for the title at the age of 12 years and 7 months.