Individual Calculations October 2018
 Solis L., Efren A.  Total change: -3.40  Rating chartPersonal card
 I Torneo Desamparados de Alajuela 2018 Alajuela CRC 2018-09-01
 1698 1991 4.00 5 -0.17 20 -3.40 
  Porras Chavarria, Michael 1591  * CRC1.0010.08201.60 
  Morales Beita, Daniel Alberto 1809 CRC1.0010.26205.20 
  Rivera Gonzalez, Jose Alexis 1806 CRC0.001-0.7420-14.80 
  Ramirez Madrid, Daniel Alberto 1591  * CRC1.0010.08201.60 
  Arce Oviedo, Cesar 1693 CRC1.0010.15203.00 
 * 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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