Individual Calculations January 2012
 Williams, Justus D  Total change: -16.80  Rating chartPersonal card
 2011 Marshall Chess Club Championship New York, New York USA 2011-10-21
RcRownchangeKK*chgGame
 2079 2186 3.50 8 -1.58 15 -23.70 
  Layevskiy, Michael 1979 USA1.0010.23153.45 
  Kekelidze, Mikheil g2459 GEO0.001-0.1715-2.55 
  Katz, Benjamin 2088 USA0.501-0.1315-1.95 
  Kennedy, Shernaz wm1972 USA1.0010.23153.45 
  Black Jr, James A 2132 USA0.501-0.0815-1.20 
  Reverby, Miro 2153 USA0.001-0.5515-8.25 
  Berg, George P 2040 USA0.001-0.7015-10.50 
  Regam, Jessica 1811 USA0.501-0.4115-6.15 

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)
 
 World Youth Chess Championship - U 14 Open Caldas Novas/GO BRA 2011-11-18
RcRownchangeKK*chgGame
 2086 2186 5.50 9 -0.05 15 -0.75 
  Lozada, Juan Pablo 1786  * BOL1.0010.08151.20 
  Haavamae, Henrik 1946 EST0.501-0.3015-4.50 
  Machan, Jan 1988 CZE1.0010.24153.60 
  Wang, Richard 2256 CAN0.001-0.4015-6.00 
  Leon Magallanes, Isaac 2008 ECU1.0010.27154.05 
  Salomon, Johan 1973 NOR1.0010.23153.45 
  Oparin, Grigoriy m2477 RUS0.5010.35155.25 
  Bluebaum, Matthias f2403 GER0.001-0.2215-3.30 
  Lekic, Lazar 1941 MNE0.501-0.3015-4.50 
 * Rating difference of more than 400. Please read more at FIDE Handbook

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)
 
 2011 Marshall December Grand Prix New York, New York USA 2011-12-03
RcRownchangeKK*chgGame
 2000 2186 2.00 2 0.51 15 7.65 
  Layevskiy, Michael 1988 USA1.0010.24153.60 
  Kopiecki, Edward P 2011 USA1.0010.27154.05 

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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