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Individual Calculations April 2009 |
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| Rathnayake, Jeewanthi Total change: 11.25 | |   |
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| 2nd Colombo Chess Festival '09 | Colombo | SRI | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1832 | 1553 | 1.00 | 3 | 0.49 | 25 | 12.25 | |
|  Lamawansa, Yasas | | | 1772 | SRI | 0.50 | 1 | 0.28 | 25 | 7.00 | | | Amarasena, Kavisha | | | 1903 | SRI | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Thilakawardana, Supeshala | | wf | 1820 | SRI | 0.50 | 1 | 0.32 | 25 | 8.00 | |
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) | | | | Sri Lanka Open International Rating Chess Tournament 2009 | Kandy | SRI | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1738 | 1553 | 0.50 | 2 | -0.04 | 25 | -1.00 | |
|  Premachanddra, Dimithri | | | 1837 | SRI | 0.50 | 1 | 0.34 | 25 | 8.50 | | | Rajapakshe, R.m.t.c. | | | 1639 | SRI | 0.00 | 1 | -0.38 | 25 | -9.50 | |
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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