Individual Calculations February 2018
 Nanayakkara, P N J  Total change: 20.52  Rating chartPersonal card
 2nd SSC Open International Rating Chess Tournament 2017 Matara SRI 2017-12-26
RcRownchangeKK*chgGame
 1285 1304 3.50 6 0.20 38 7.60 
  De Silva, W R L 1668 SRI0.001-0.1038-3.80 
  Jayarathna, Sharada Induwara 1068 SRI0.501-0.3038-11.40 
  De Silva, L Nemith Semuthu 1087 SRI1.0010.22388.36 
  Lamahewa, C 1704  * SRI0.001-0.0838-3.04 
  Kanchana, W A 1043 SRI1.0010.18386.84 
  De Silva, T Dinura Hemjith 1137 SRI1.0010.283810.64 
 * 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)
 
 Sri Lanka National Youth Chess Championship 2017 and 2018 Under - 13 years Colombo SRI 2017-12-27
RcRownchangeKK*chgGame
 1259 1304 5.00 8 0.47 38 17.86 
  Liyanage, K G 1082 SRI1.0010.22388.36 
  Jayawardena, Sadev Dinuja 1155 SRI0.001-0.7038-26.60 
  Bandara, W K S V 1091 SRI1.0010.23388.74 
  Wijeratne, Tharin 1122 SRI1.0010.26389.88 
  Akasha, J P Vihanga 1219 SRI1.0010.383814.44 
  Kodithuwakku, Lisara 1626 SRI1.0010.873833.06 
  Vithanage, I A 1524 SRI0.001-0.2238-8.36 
  Vithanage, H Yasindu Rashmika 1253 SRI0.001-0.5738-21.66 

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)
 
 22nd Battle of the Kings Inter School Team Chess Championship 2018 Colombo SRI 2018-01-19
RcRownchangeKK*chgGame
 1279 1304 2.00 4 -0.13 38 -4.94 
  Weerasinghe, Sethum 1252 SRI1.0010.433816.34 
  Perera, S D Lahiru 1207 SRI0.001-0.6338-23.94 
  Cooray, T C M Dulein Kavindu 1385 SRI0.001-0.3938-14.82 
  Pathirana, W P Voji Nimla 1272 SRI1.0010.463817.48 

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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