Rapid: Individual Calculations February 2023
 Boztas, Lana  Total change: -19.00  Rating chartPersonal card
 Coulsdon Chess Rapidplay - New Year (Rated Sections) Coulsdon ENG 2023-01-21
RcRownchangeKK*chgGame
 1219 1384 2.50 5 -0.95 20 -19.00 
  Kalaiyalahan, Aishwarya 1021 ENG0.001-0.9020-18.00 
  Braithwaite, Paul 1040 ENG1.0010.12202.40 
  Gillespie, Frank 1218 ENG1.0010.28205.60 
  Sahdev, Varun 1245 ENG0.001-0.6920-13.80 
  Foley, Phil T 1571 ENG0.5010.24204.80 

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)
 

 

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