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Individual Calculations April 2009 |
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| Kumara, Sisira Total change: -6.00 | |   |
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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 |
| 2045 | 1827 | 0.00 | 1 | -0.22 | 25 | -5.50 | |
|  Dissanayake, R.s. | | | 2045 | SRI | 0.00 | 1 | -0.22 | 25 | -5.50 | |
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 |
| 1954 | 1827 | 0.50 | 4 | -0.88 | 25 | -22.00 | |
| | De Moraes, Shamine | | | 1963 | SRI | 0.00 | 1 | -0.32 | 25 | -8.00 | |  Weerawardana, R | | | 2127 | SRI | 0.00 | 1 | -0.15 | 25 | -3.75 | | | Hapuarachchi, H.l.m. | | | 1937 | SRI | 0.50 | 1 | 0.15 | 25 | 3.75 | | | Egodage, Kn | | | 1787 | SRI | 0.00 | 1 | -0.56 | 25 | -14.00 | |
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 |
| 1967 | 1827 | 2.50 | 5 | 0.86 | 25 | 21.50 | |
| | Thilakawardana, Supeshala | | wf | 1820 | SRI | 1.00 | 1 | 0.49 | 25 | 12.25 | | | Athavan, R.k. | | | 1947 | SRI | 1.00 | 1 | 0.66 | 25 | 16.50 | | | Narayanan, Srinath | m | | 2177 | IND | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Amarasinghe, A.a.c.b. | | | 1925 | SRI | 0.50 | 1 | 0.13 | 25 | 3.25 | | | Fernando, J.m.m.p. | | | 1966 | SRI | 0.00 | 1 | -0.31 | 25 | -7.75 | |
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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