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Individual Calculations July 2009 |
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| Edirisinghe, Dulan Total change: 8.70 | |   |
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| Sri Lanka B Chess Championship 2009 | Colombo | SRI | 2009-05-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2022 | 2128 | 6.50 | 10 | 0.15 | 15 | 2.25 | |
|  Subash, Lasitha | | | 1880 | SRI | 1.00 | 1 | 0.19 | 15 | 2.85 | |  Fernando, J.m.m.p. | | | 1934 | SRI | 0.50 | 1 | -0.25 | 15 | -3.75 | | | De Moraes, Shamin | | | 1951 | SRI | 0.50 | 1 | -0.23 | 15 | -3.45 | | | Gunasinghe, S.r. | | | 1940 | SRI | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Perera, W.c.c. | | | 1917 | SRI | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Peiris, T.g.m. | | | 2129 | SRI | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Kurukulasuriya, Prasanna | | | 2085 | SRI | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Anuruddha, G.c. | | | 2187 | SRI | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Mallawarachchi, T.s. | | | 2075 | SRI | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Senaka, Rajeendra | | | 2126 | SRI | 0.50 | 1 | 0.00 | 15 | 0.00 | |
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 National Chess Championship 2009 | Colombo | SRI | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2061 | 2128 | 7.50 | 12 | 0.43 | 15 | 6.45 | |
| | Russell, M K A | | | 2241 | SRI | 1.00 | 1 | 0.65 | 15 | 9.75 | | | Peiris, T G M | | | 2129 | SRI | 0.00 | 1 | -0.50 | 15 | -7.50 | | | Hapuarachchi, H L M | | | 1963 | SRI | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Kottahachchy, K O V | | | 2050 | SRI | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Wijekoon, Chandana | | | 1965 | SRI | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Kalugampitiya, R S | | | 2126 | SRI | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Gunasinghe, S R | | | 1940 | SRI | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Jayawardena, M | | | 1920 | SRI | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Kurukulasuriya, Prasanna | | | 2085 | SRI | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Wijesuriya, G Luxman | | | 2049 | SRI | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Mallawarachchi, T S | | | 2075 | SRI | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Annurudha, G C | | | 2187 | SRI | 0.50 | 1 | 0.08 | 15 | 1.20 | |
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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