Elo chess is a rating system used to compare the relative strength of chess players. It is named after its creator Arpad Elo, a Hungarian-American physics professor. The Elo system is used by the FIDE, the World Chess Federation, as the primary method for rating players.

In the Elo system, each player is assigned a rating based on their performance against other players. This rating is used to determine the probability of a player winning a game against another player. A player's rating is calculated using a formula that takes into account the ratings of their opponents, the type of … Read more