Author: Vincent Lejeune
Date: 04:00:10 07/10/01
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On July 10, 2001 at 05:49:39, Christophe Theron wrote: >On July 10, 2001 at 05:02:35, Vincent Lejeune wrote: > >> >>>BTW the first round of the match is completed now. ChessTiger 14 reached very >>>good 61.5 %. Could someone >>>please calculate, how much ELO difference 61.5 % mean compared to the average >>>ELO of the opponents? >>>Thanks a lot! >> >>That means a +92 Elo difference > > >Sorry Vincent, but this is not right. > >A 61.5% winning percentage means approximately a 80.5 Elo points difference. > >The rule of thumb is very simple: take the winning percentage, substract 50, >then multiply by 7. > >This rule is an approximation (but a very good one) that works only in the range >20% to 80%. > > > > Christophe Oui, Christophe, j'ai posté cette règle il y a qq mois après avoir observé les performances dans un tableau. Ici j'ai utilisé une régle plus générale : (800*((Nb de points)/(Nb de parties)-0,5)) Une telle différence de point m'étonne, je vais regarder à ça de plus près ... (pas tout de suite car je joue le championnat de belgique toute la semaine : http://lnl.ovh.org/bcc2001/home.html) Encore félicitation pour la qualité de jeu de Chess Tiger !!! A bientôt Yes, I post this rules some months ago :)) But I found a genral formula = (800*((Nb of points)/(Nb of game)-0,5)) I'm astonished by the difference ...
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