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Individual Calculations July 2009 |
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| Ranasinghe, C.n. Total change: -34.00 | |   |
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| Sri Lanka Junior National Chess Championship 2009 | Colombo | SRI | 2009-04-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1844 | 1860 | 0.50 | 3 | -1.00 | 25 | -25.00 | |
|  Madugalle, Y.d.b. | | | 2050 | SRI | 0.00 | 1 | -0.25 | 25 | -6.25 | |  De Silva, Rasheen | | | 1955 | SRI | 0.00 | 1 | -0.37 | 25 | -9.25 | | | Kodithuwakku, Gihan | | | 1527 | SRI | 0.50 | 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) | | | | Kandy Major Chess Championship 2009 | Kandy | SRI | 2009-04-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1814 | 1860 | 2.50 | 3 | 0.83 | 25 | 20.75 | |
| | Alahakoon, Isuru | | | 1947 | SRI | 1.00 | 1 | 0.62 | 25 | 15.50 | | | Wickramanayake, T.u | | | 1853 | SRI | 1.00 | 1 | 0.49 | 25 | 12.25 | | | Rajapakshe, R.m.t.c | | | 1642 | SRI | 0.50 | 1 | -0.28 | 25 | -7.00 | |
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 B Chess Championship 2009 | Colombo | SRI | 2009-05-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1908 | 1860 | 1.00 | 5 | -1.19 | 25 | -29.75 | |
| | Senaka, Rajeendra | | | 2126 | SRI | 0.00 | 1 | -0.18 | 25 | -4.50 | | | Rajapakshe, R.m.t.c. | | | 1642 | SRI | 0.50 | 1 | -0.28 | 25 | -7.00 | | | Chandrarathne, W.s.n. | | | 1933 | SRI | 0.00 | 1 | -0.40 | 25 | -10.00 | | | Amarasinghe, A.a.c.b.j.b. | | | 1901 | SRI | 0.00 | 1 | -0.44 | 25 | -11.00 | | | Liyanage, N.p. | | | 1938 | SRI | 0.50 | 1 | 0.11 | 25 | 2.75 | |
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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