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The Elo [a] rating system is a method for calculating the relative skill levels of players in zero-sum games such as chess or esports. It is named after its creator Arpad Elo , a Hungarian-American physics professor.
This list of top-ranked chess grandmasters is ordered by their peak Elo rating.The cut-off value is 2700 for men (players with a rating at or above this value are colloquially known as super grandmasters) and 2500 for women.
In 1970, FIDE adopted Elo's system for rating current players, so one way to compare players of different eras is to compare their Elo ratings. The best-ever Elo ratings are tabulated below. As of September 2023, there are 133 chess players in history who broke 2700, and 15 of them exceeded 2800.
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 .
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 ...
The International Chess Federation (FIDE) governs international chess competition. Each month, FIDE publishes the lists "Top 100 Players", "Top 100 Women", "Top 100 Juniors" and "Top 100 Girls" and rankings of countries according to the average rating of their top 10 players and top 10 female players in the classical time control.
In essence, the proposals built on the work done by Professor Elo in devising his Elo rating system. The establishment of an updated list of players and their Elo rating enabled significantly strong international chess tournaments to be allocated a Category, based on the average rating of the contestants. For instance, it was decided that ...
The number of games played by individuals during the rating period was added to the lists from July 1985 onwards. Player ID numbers were used from January 1990. From January 1999, the practice of rounding to the nearest five Elo points was discontinued, and ratings were then rounded to the nearest Elo point for publication.