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Individual Calculations April 2008 |
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| De Silva, Osheen Total change: 23.75 | |   |
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| Sri Lanka National B Chess Championships 2007 | Colombo | SRI | 2007-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2068 | 1936 | 3.50 | 7 | 1.22 | 25 | 30.50 | |
|  Dulan, Edirisinghe | | | 2197 | SRI | 1.00 | 1 | 0.82 | 25 | 20.50 | |  Kuruppu, Danuke | | | 2094 | SRI | 0.50 | 1 | 0.21 | 25 | 5.25 | | | Kurukulasuriya, Prasa | | | 2052 | SRI | 0.00 | 1 | -0.34 | 25 | -8.50 | | | , Dissanayake.r.s | | | 2038 | SRI | 0.00 | 1 | -0.36 | 25 | -9.00 | | | , Fonseka.c.k.d | | | 2039 | SRI | 0.00 | 1 | -0.36 | 25 | -9.00 | | | , Hettiarachchi.a.u | | | 2030 | SRI | 1.00 | 1 | 0.63 | 25 | 15.75 | | | Fernando, J.m.m.p | | | 2027 | SRI | 1.00 | 1 | 0.62 | 25 | 15.50 | |
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) | | | | Colombo International Chess Festival | Colombo | SRI | 2008-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2108 | 1936 | 0.00 | 1 | -0.27 | 25 | -6.75 | |
| | Rajapaksha, Rmcm | | | 2108 | SRI | 0.00 | 1 | -0.27 | 25 | -6.75 | |
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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