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Individual Calculations April 2009 |
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| Egodage, Keshan Total change: 33.50 | |   |
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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 |
| 1976 | 1787 | 1.50 | 5 | 0.23 | 25 | 5.75 | |
|  Alahakoon, Isuru | | | 1977 | SRI | 0.00 | 1 | -0.25 | 25 | -6.25 | | | Ketalawala, J.k.c. | | | 2033 | SRI | 1.00 | 1 | 0.81 | 25 | 20.25 | |  Hapuarachchi, H.l.m. | | | 1937 | SRI | 0.50 | 1 | 0.20 | 25 | 5.00 | | | Perera, L.n. | | | 2008 | SRI | 0.00 | 1 | -0.22 | 25 | -5.50 | | | Amarasinghe, A.a.c.b.j.b. | | | 1925 | 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) | | | | Sri Lanka Inter Club Super League 08 | Colombo | SRI | 2009-02-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 1787 | 2.50 | 5 | 1.11 | 25 | 27.75 | |
| | Vithana, C.c. | | | 1761 | SRI | 1.00 | 1 | 0.46 | 25 | 11.50 | | | Weerawardana, R | | | 2127 | SRI | 0.00 | 1 | -0.12 | 25 | -3.00 | | | Peiris, T.g.m. | | | 2133 | SRI | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Dissanayake, Rs | | | 2045 | SRI | 0.50 | 1 | 0.32 | 25 | 8.00 | | | Kumara, Sisira | | | 1827 | SRI | 1.00 | 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) | | |
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