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Help Forum

Help Forum

  1. 02 Oct '01 16:21
    In the help FAG this formula is given for the calculating the an
    individual game rating;

    K is a constant (32 for 0-2099, 24 for 2100-2399, 16 for 2400 and
    above)

    Win Expectancy = 1 / (10^((OpponentRating-YourRating)/400)+1)
    New Rating = Old Rating + K * (1 - Win Expectancy)

    Where is this formula do you place the variable for whether the game
    resulted in a win, lose or draw?
  2. Subscriber Chris
    Site Admin
    03 Oct '01 02:00
    Yes, this is not a very good description. The "1" in (1 - Win
    Expectancy) should read 1, 0 or 1/2 depending on whether it is a win,
    loss or draw. I think.