Individual Calculations July 2023
 Borisov, Lubomir  Total change: -23.00  Rating chartPersonal card
 Ropotamo cup U1800 Primorsko BUL 2023-06-09
RcRownchangeKK*chgGame
 1490 1684 4.00 7 -1.15 20 -23.00 
  Georgiev, Kristian 1284  * BUL1.0010.08201.60 
  Tonev, Slavcho 1524 BUL1.0010.29205.80 
  Marzakov, Mihail 1527 BUL0.501-0.2120-4.20 
  Merdzhanov, Vladko 1470 BUL0.501-0.2720-5.40 
  Grebeniuc, Alexandra 1579 MDA0.001-0.6420-12.80 
  Nikolov, Zdravko 1420 BUL1.0010.18203.60 
  Nenova, Andzhelika 1627 BUL0.001-0.5820-11.60 
 * 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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