K Factor (chess)

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The K Factor is the value that governs the magnitude of rating changes in the United States Chess Federation rating system. K can be estimated by dividing 800 by the effective number of games a players rating is based (Ne) plus the number of games the player completed in a tournament (m).

K = 800 / (Ne + m)\,

[edit] See also

[edit] External links

  • [1] Approximating Formulas for the USCF Rating System