Individual Calculations June 2023
 Bortnyk, Mykola  Total change: 2.20  Rating chartPersonal card
 NYC Chess Norms Spring 2023 IM B - Schiller New York City, New York USA 2023-04-05
RcRownchangeKK*chgGame
 2271 2425 5.00 9 -1.29 10 -12.90 
  Bortnyk, Mariia 2188 UKR0.501-0.3010-3.00 
  Reiss, Aiden 2138 USA0.501-0.3410-3.40 
  Navrotescu, Andreea wg2253 FRA0.001-0.7310-7.30 
  Luo, Terry f2321 USA1.0010.36103.60 
  Lee, Alice Teresa fwm2391 USA0.501-0.0510-0.50 
  Colas, Joshua f2342 USA0.501-0.1110-1.10 
  Zhao, Erick f2275 USA0.501-0.2010-2.00 
  Xu, Grant Y 2273 USA0.501-0.2010-2.00 
  Tanenbaum, Zachary c2261 USA1.0010.28102.80 

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 May Marshall Premier New York, NY USA 2023-05-07
RcRownchangeKK*chgGame
 2237 2425 5.00 5 1.51 10 15.10 
  Jiang, Jason 2025  * USA1.0010.08100.80 
  Oh, James 1981 USA1.0010.06100.60 
  Lapshun, Yury m2350 USA1.0010.40104.00 
  Wang, Kevin m2410 USA1.0010.48104.80 
  Schmakel, Sam m2420 USA1.0010.49104.90 
 * 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)
 

 

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