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Individual Calculations April 2009 |
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| Kottahachchy, K.o.v. Total change: 15.75 | |   |
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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 |
| 1916 | 2034 | 4.50 | 7 | -0.09 | 15 | -1.35 | |
|  Munasinghe, Lahiru | | | 1860 | SRI | 1.00 | 1 | 0.27 | 15 | 4.05 | |  Prasanna, Krishna B. | | | 1812 | IND | 0.50 | 1 | -0.28 | 15 | -4.20 | | | Egodage, T.s. | | | 1826 | SRI | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Russell, M.k.a. | | | 2209 | SRI | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Perera, W.c.c. | | | 1929 | SRI | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Lasitha, Subash | | | 1888 | SRI | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Jayasundara, P.k.u.m. | | | 1885 | SRI | 0.50 | 1 | -0.20 | 15 | -3.00 | |
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 Inter Club Super League 08 | Colombo | SRI | 2009-02-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2058 | 2034 | 3.00 | 4 | 1.14 | 15 | 17.10 | |
| | Athukorala, A | | | 2141 | SRI | 1.00 | 1 | 0.65 | 15 | 9.75 | | | Anuruddha, G.c. | | | 2173 | SRI | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Wijesuriya, Gl | | | 2065 | SRI | 1.00 | 1 | 0.54 | 15 | 8.10 | | | Thirimawithana, Raveen | | | 1854 | SRI | 1.00 | 1 | 0.26 | 15 | 3.90 | |
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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