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Individual Calculations April 2009 |
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| Perera, L.n. Total change: -20.75 | |   |
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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 |
| 1815 | 2008 | 3.50 | 6 | -0.97 | 25 | -24.25 | |
|  Ranasinghe, S.d. | | | 1783 | SRI | 1.00 | 1 | 0.22 | 25 | 5.50 | |  Munasinghe, Shanaka | | | 1755 | SRI | 0.50 | 1 | -0.31 | 25 | -7.75 | | | Prasanna, Krishna B. | | | 1812 | IND | 0.00 | 1 | -0.75 | 25 | -18.75 | | | Egodage, T.s. | | | 1826 | SRI | 1.00 | 1 | 0.26 | 25 | 6.50 | | | Egodage, Keshan | | | 1787 | SRI | 1.00 | 1 | 0.22 | 25 | 5.50 | | | Wijekoon, Chandana | | | 1925 | SRI | 0.00 | 1 | -0.61 | 25 | -15.25 | |
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 |
| 2030 | 2008 | 2.00 | 4 | 0.14 | 25 | 3.50 | |
| | Peiris, T.g.m. | | | 2133 | SRI | 0.00 | 1 | -0.33 | 25 | -8.25 | | | Lamawansa, Yasas | | | 1772 | SRI | 1.00 | 1 | 0.20 | 25 | 5.00 | | | Weerawardena, Romesh | | | 2127 | SRI | 0.00 | 1 | -0.34 | 25 | -8.50 | | | Manish, Hamal | f | | 2089 | NEP | 1.00 | 1 | 0.61 | 25 | 15.25 | |
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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