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Individual Calculations July 2009 |
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| Munasinghe, Lahiru Total change: -17.40 | |   |
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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 |
| 1663 | 1920 | 1.00 | 2 | -0.61 | 15 | -9.15 | |
|  Kodithuwakku, Gihan | | | 1570 | SRI | 0.00 | 1 | -0.89 | 15 | -13.35 | |  Harishman, S. | | | 1756 | SRI | 1.00 | 1 | 0.28 | 15 | 4.20 | |
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) | | | | Colombo Major Chess Championship 2009 | Colombo | SRI | 2009-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1690 | 1920 | 2.00 | 4 | -1.08 | 15 | -16.20 | |
| | Seneviratne, Shehan | | | 1580 | SRI | 0.50 | 1 | -0.38 | 15 | -5.70 | | | Perera, Jayasanka | | | 1820 | SRI | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Kodithuwakku, Gihan | | | 1570 | SRI | 0.50 | 1 | -0.39 | 15 | -5.85 | | | Munasinghe, Shanaka | | | 1791 | SRI | 0.50 | 1 | -0.17 | 15 | -2.55 | |
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 |
| 1978 | 1920 | 3.50 | 7 | 0.53 | 15 | 7.95 | |
| | Kurukulasuriya, Prasanna | | | 2085 | SRI | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Lamawansa, Yasas | | | 1721 | SRI | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Kottahachchy, K.o.v | | | 2050 | SRI | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Weerawardena, R. | | | 2180 | SRI | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Miraj, D.a. | | | 2024 | SRI | 1.00 | 1 | 0.64 | 15 | 9.60 | | | Fernando, J.m.m.p. | | | 1934 | SRI | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Wickramanayake, T.u. | | | 1853 | SRI | 1.00 | 1 | 0.41 | 15 | 6.15 | |
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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