Individual Calculations February 2014
 Kahn, Aaron E  Total change: -18.45  Rating chartPersonal card
 46th Annual Liberty Bell Open Philadelphia, Pennsylvania USA 2014-01-17
 2144 2251 2.50 6 -1.23 15 -18.45 
  Opaska, Michael P 2010 USA1.0010.20153.00 
  Shabalov, Alexander g2529 USA0.5010.33154.95 
  Kekelidze, Mikheil g2462 GEO0.001-0.2315-3.45 
  Tanwir, Furqan 2044 USA0.001-0.7715-11.55 
  Feng, Maggie wc1878 USA1.0010.10151.50 
  Obrien, Matthew 1941 USA0.001-0.8615-12.90 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)


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