Judit Polgar (born July 23, 1976) is a Hungarian chess grandmaster.
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.
As of June 2014, Polgár was ranked 60th in the world FIDE ratings list with an Elo rating of 2685, the only woman on FIDE’s Top 100 Players list, and has been ranked as high as eighth (in 2005). She has won or shared first in the chess tournaments of Hastings 1993, Madrid 1994, León 1996, U.S. Open 1998, Hoogeveen 1999, Siegman 1999, Japfa 2000, and the Najdorf Memorial 2000.
Polgár is the only woman to have won a game from a reigning world number one player, and has defeated ten current or former world champions in either rapid or classical chess: Magnus Carlsen, Anatoly Karpov, Garry Kasparov, Boris Spassky, Vasily Smyslov, Veselin Topalov, Viswanathan Anand, Ruslan Ponomariov, Alexander Khalifman, and Rustam Kasimdzhanov.