Individual Calculations January 2018
 Solis L., Efren A.  Total change: -11.40  Rating chartPersonal card
 Abierto Metropolitano 2017 San Jose CRC 2017-12-09
 1900 2048 5.50 9 -0.57 20 -11.40 
  Rivera Obando, Juan Jose 1648  * CRC1.0010.08201.60 
  Solano Cruz, Agustin 1777 CRC1.0010.17203.40 
  Jimenez Sancho, Pedro Pablo 1844 CRC1.0010.24204.80 
  Alfaro Guillen, Jose Raul 2048 CRC1.0010.502010.00 
  Urbina Quiroz, Edwin 2163 CRC0.001-0.3420-6.80 
  Chaves Sanchez, Gabriel A 2102 CRC0.001-0.4220-8.40 
  Aguilar Pina, Luis Gerardo 1872 CRC0.501-0.2320-4.60 
  Porras Chavarria, Steve 1787 CRC0.501-0.3220-6.40 
  Rojas Cisneros, Kevin 1855 CRC0.501-0.2520-5.00 
 * 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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