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Individual Calculations April 2009 |
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| Premanath, Dinushki Total change: 5.10 | |   |
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| 2nd Colombo Chess Festival '09 | Colombo | SRI | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1962 | 1703 | 1.50 | 5 | 0.57 | 15 | 8.55 | |
|  Navalgund, Niranjan | | | 2053 | IND | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Wettasinha, Vasantha | | | 1929 | SRI | 1.00 | 1 | 0.79 | 15 | 11.85 | |  Kuruwitage, Yasas Kalana | | | 1938 | SRI | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Alahakoon, Isuru | | | 1977 | SRI | 0.00 | 1 | -0.17 | 15 | -2.55 | | | Amarasena, Kavisha | | | 1915 | SRI | 0.50 | 1 | 0.27 | 15 | 4.05 | |
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 |
| 2043 | 1703 | 0.00 | 2 | -0.23 | 15 | -3.45 | |
| | Ketalawala, J.k.c. | | | 2033 | SRI | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Peiris, T.g.m. | | | 2053 | SRI | 0.00 | 1 | -0.11 | 15 | -1.65 | |
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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