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Individual Calculations April 2009 |
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| Amarasena, Kaveesha Total change: -7.05 | |   |
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| The Inaugural Royal Challenge International Chess Championship 2009 | Colombo | SRI | 2009-01-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2065 | 1915 | 1.00 | 4 | -0.20 | 15 | -3.00 | |
|  Wijesuriya, G.luxman | | | 2065 | SRI | 0.00 | 1 | -0.30 | 15 | -4.50 | |  Peiris, T.g.m. | | | 2133 | SRI | 1.00 | 1 | 0.78 | 15 | 11.70 | | | Dissanayake, R.s. | | | 2045 | SRI | 0.00 | 1 | -0.32 | 15 | -4.80 | | | De Silva, Osheen | | | 2016 | SRI | 0.00 | 1 | -0.36 | 15 | -5.40 | |
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) | | | | 2nd Colombo Chess Festival '09 | Colombo | SRI | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1844 | 1915 | 1.50 | 3 | -0.27 | 15 | -4.05 | |
| | Rathnayake, Jeewanthi | | | 1565 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Deshmukh, Anup | m | | 2265 | IND | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Premanath, Dinushki | | | 1703 | SRI | 0.50 | 1 | -0.27 | 15 | -4.05 | |
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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