Individual Calculations July 2009
 Alfaro Rojas, Alfonso  Total change: -2.40  Rating chartPersonal card
 Costa Rican National Championship Phase 1.2 Moravia CRC 2009-06-05
RcRownchangeKK*chgGame
 2067 2163 5.50 9 -0.16 15 -2.40 
  Hernandez Coto, Carlos 2003 CRC1.0010.29154.35 
  Maynard, Francis 2180 CRC1.0010.52157.80 
  Leandro, Jhonny 2100 CRC0.501-0.0915-1.35 
  Solano Lopaz, Royner 2038 CRC0.501-0.1715-2.55 
  Montenegro, Pedro 2056 CRC0.001-0.6515-9.75 
  Vargas Serano, Pablo 1976 CRC0.001-0.7415-11.10 
  Vega, Edwin 2065 CRC1.0010.37155.55 
  Bermudez Munoz, Alexander 2038 CRC0.501-0.1715-2.55 
  Castillo, Rommel 2149 NCA1.0010.48157.20 

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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