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The Elo rating system is a method for calculating the relative skill levels of players in two-player games such as chess and Go. Elo is often written in capital letters (ELO), but it is not an acronym. It is the family name of the system's creator, Arpad Elo (1903â1992), a Hungarian-born American physics professor. Elo was originally invented as an improved chess rating system although it is used in many games today.
(8876). In C.N. 1330 (see page 127 of Chess Explorations) Colin McGuigan (Newtownards, Northern Ireland) quoted Arpad Elo on page 19 of the October 1973 CHESS : If a player should reach the master level by age 18, he may expect an advance in proficiency in the next 15 years of approximately a full class interval.