Individual Calculations October 2008
 Martin, Lewis  Total change: -22.75  Rating chartPersonal card
 2nd World Deaf Individual (Boys and Girls) St. Gallen SUI 2008-07-20
 1912 1992 1.50 4 -0.91 25 -22.75 
  Lapaj, Mateusz 1752 POL0.501-0.3025-7.50 
  Zaynidinov, Sirojiddin f2026 UZB0.5010.05251.25 
  Mucha, Annegret wc1951 GER0.001-0.5625-14.00 
  Ovcharov, Taras 1918 UKR0.501-0.1025-2.50 

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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