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Elo is known for his chess player rating system. The original player rating system was developed in 1950 by Kenneth Harkness, the Business Manager of the United States Chess Federation. By 1960, using the data developed through the Harkness Rating System, Elo developed his own formula which had a sound statistical basis and constituted an ...
Arpad Elo was a chess master and an active participant in the United States Chess Federation (USCF) from its founding in 1939. [4] The USCF used a numerical ratings system devised by Kenneth Harkness to enable members to track their individual progress in terms other than tournament wins and losses. The Harkness system was reasonably fair, but ...
In 1960, the USCF adopted a more reliable rating system invented by Arpad Elo, a college professor of physics who was a chess master. Elo worked with USCF for many years. The system he invented, or a variant of it, was later adopted by FIDE, and is utilized in other games and sports, including USA Today's college football and basketball ...
A chess rating system is a system used in chess to estimate the strength of a player, based on their performance versus other players. They are used by organizations such as FIDE, the US Chess Federation (USCF or US Chess), International Correspondence Chess Federation, and the English Chess Federation. Most of the systems are used to ...
The United States Chess Federation named her "Grandmaster of the Year" in 2003, the first time a woman has won that honor. [22] In that same year, Polgar also became the first woman to win the US Open Blitz Championship, against a field which included seven grandmasters. She won that title again in 2005 and in 2006.
Harkness devised a rating system that was used by the US Chess Federation from 1950 to 1960. When a player competes in a tournament, the average rating of his competition is calculated. If the player scores 50% he receives the average competition rating as his performance rating.
Chess expert is a title given by the United States Chess Federation (USCF). It is awarded to chess players rated from 2000 to 2199. Players rated above that are masters, while players below that are class players. Approximately 50,000 chess players have USCF ratings, of which approximately 2,500 are rated 2000 or better.
The following is a list of the players ranked number one female on the FIDE rating system from the first official list in July 1971 to the present day, along with their ratings during the periods in question. A rating denoted with bold text followed by an asterisk (*) is a career high rating.