Judit Polgár is a Hungarian chess grandmaster, widely regarded as the strongest female chess player of all time. In 1991, Polgár achieved the title of Grandmaster at the age of 15 years and 4 months, at the time the youngest to have done so, breaking the record previously held by former world champion Bobby Fischer. She was the youngest player ever to break into the FIDE top 100 players rating list, ranking No. 55 in the January 1989 rating list, at the age of 12.

The FIDE World Chess Championship 2005 took place in Potrero de los Funes, San Luis Province in Argentina from September 27 to October 16, 2005. It was won by Veselin Topalov.