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Individual Calculations April 2009 |
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| Miraj, D.a. Total change: 40.25 | |   |
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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 |
| 2133 | 1984 | 0.00 | 1 | -0.30 | 25 | -7.50 | |
|  Peiris, T.g.m. | | | 2133 | SRI | 0.00 | 1 | -0.30 | 25 | -7.50 | |
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) | | | | Sri Lanka Inter Club Super League 08 | Colombo | SRI | 2009-02-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2007 | 1984 | 3.00 | 4 | 1.12 | 25 | 28.00 | |
|  Kavikeshawa, Kg | | | 1942 | SRI | 1.00 | 1 | 0.44 | 25 | 11.00 | | | Dissanayake, H | | | 2023 | SRI | 0.00 | 1 | -0.45 | 25 | -11.25 | | | Athavan, Rk | | | 1947 | SRI | 1.00 | 1 | 0.45 | 25 | 11.25 | | | Kalugampitiya, R.s. | | | 2115 | SRI | 1.00 | 1 | 0.68 | 25 | 17.00 | |
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) | | | | 2nd Colombo Chess Festival '09 | Colombo | SRI | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1907 | 1984 | 2.00 | 2 | 0.79 | 25 | 19.75 | |
| | Samarakone, U.l. | | | 1876 | SRI | 1.00 | 1 | 0.35 | 25 | 8.75 | | | Kuruwitage, Yasas Kalana | | | 1938 | SRI | 1.00 | 1 | 0.44 | 25 | 11.00 | |
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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