In orer to qualify for the title of Grandmaster of chess, a title awarded by FIDE, the World Chess Federation, one must in most cases achieve three grandmaster norms totaling a minimum of 24 games. There have been many changes to the rules, but in most cases a grandmaster norm is achieved by playing in a tournament of nine rounds or more. In this tournament, at least three of those players must be from different countries and at least three of those players must already have the grandmaster title. The performance rating of the player under the Elo rating system must be at least 2600.