Individual Calculations January 2019
 Lyapa , Chisha  Total change: 5.40  Rating chartPersonal card
 Bank of Zambia Christmas Open Chess Tournament Ndola ZAM 2018-12-22
 1925 1858 2.00 4 0.27 20 5.40 
  Nyirenda, Alick 2041 ZAM0.001-0.2620-5.20 
  Chumfwa, Kelvin m2200 ZAM0.001-0.1220-2.40 
  Sambo, Noah 1751 ZAM1.0010.35207.00 
  Nkhuwa, Nathan 1707 ZAM1.0010.30206.00 

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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