Individual Calculations September 2017
 Simons, Martin J  Total change: -6.80  Rating chartPersonal card
 104th British Championships Over 50 Llandudno ENG 2017-07-30
 1996 2026 3.50 7 -0.34 20 -6.80 
  Littlewood, Paul E m2361 ENG0.5010.38207.60 
  Henderson, David 2099 ENG0.001-0.4020-8.00 
  Shakespeare, John S 1930 WLS0.501-0.1320-2.60 
  Clucas, Reg P 1950 ENG0.501-0.1020-2.00 
  Fallowfield, Nicholas 1901 ENG0.501-0.1720-3.40 
  Phillips, Owen S 1933 ENG0.501-0.1320-2.60 
  Livesey, R Nigel 1797 ENG1.0010.21204.20 

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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