Individual Calculations February 2023
 Walder, Michael S  Total change: -46.40  Rating chartPersonal card
 2023 New Year Tuesday Night Marathon - 2000 and over Rounds 1-3 San Francisco, CA USA 2023-01-10
RcRownchangeKK*chgGame
 1909 1916 2.00 3 0.40 20 8.00 
  Zhou, Ivan 1540 USA1.0010.09201.80 
  Griffith, Kyron Waykuan m2363 USA0.001-0.0620-1.20 
  Lum, Michael K 1823 USA1.0010.37207.40 

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)
 
 14th annual Golden State Open - Major Concord, CA USA 2023-01-13
RcRownchangeKK*chgGame
 1676 1916 0.00 2 -1.60 20 -32.00 
  Xu, Jayden 1663 USA0.001-0.8120-16.20 
  Suarez, Sebby 1689 USA0.001-0.7920-15.80 

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)
 
 2023 SJCC Winter Championship Milpitas, CA USA 2023-01-21
RcRownchangeKK*chgGame
 1669 1916 0.50 2 -1.12 20 -22.40 
  Champsi, Imran 1669 USA0.001-0.8120-16.20 
  Oza, Nikunj Chandrakant 1668 USA0.501-0.3120-6.20 

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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