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Individual Calculations April 2008 |
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| De Silwa, N Rashin Total change: 3.35 | |   |
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| Sri Lanka National B Chess Championships 2007 | Colombo | SRI | 2007-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2097 | 2018 | 3.50 | 6 | 1.13 | 25 | 28.25 | |
|  Herat, Nishendra | | | 1980 | SRI | 0.50 | 1 | -0.05 | 25 | -1.25 | |  Rajapaksha, Rmcm | | | 2148 | SRI | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Weerawardane, R | | | 2171 | SRI | 1.00 | 1 | 0.70 | 25 | 17.50 | | | Dulan, Edirisinghe | | | 2197 | SRI | 0.50 | 1 | 0.23 | 25 | 5.75 | | | Kuruppu, Danuke | | | 2094 | SRI | 0.50 | 1 | 0.10 | 25 | 2.50 | | | De, Moraes Shamine | | | 1994 | SRI | 1.00 | 1 | 0.47 | 25 | 11.75 | |
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) | | | | Sri Lanka National A Chess Championships 2007 | Colombo | SRI | 2007-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2008 | 1969 | 5.00 | 13 | -0.75 | 25 | -18.75 | |
| | Ketalawala, J.k.c. | | | 1716 | SRI | 1.00 | 1 | 0.19 | 25 | 4.75 | | | Kurukulasuriya, Prasanna | | | 2052 | SRI | 1.00 | 1 | 0.61 | 25 | 15.25 | | | Kottahachchy, K O V | | | 1799 | SRI | 0.50 | 1 | -0.22 | 25 | -5.50 | | | Nishendra, Herath | | | 1980 | SRI | 1.00 | 1 | 0.52 | 25 | 13.00 | | | Edirisinghe, Dulan | | | 2197 | SRI | 0.00 | 1 | -0.21 | 25 | -5.25 | | | Kuruppu, Danuke | | | 2094 | SRI | 0.00 | 1 | -0.33 | 25 | -8.25 | | | Rajapaksha, Rmcm | | | 2108 | SRI | 0.00 | 1 | -0.31 | 25 | -7.75 | | | Amarakoon, Naditha Thilanga | | | 1661 | SRI | 1.00 | 1 | 0.14 | 25 | 3.50 | | | Wijesurija, G Laxman | | | 2105 | SRI | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Telge, Peiris Gayan Madushanka | | | 1999 | SRI | 0.50 | 1 | 0.04 | 25 | 1.00 | | | Annurudha, G C | | | 2167 | SRI | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Russell, M K A | | | 2187 | SRI | 0.00 | 1 | -0.22 | 25 | -5.50 | | | Dissanayake, Rs | | | 2038 | SRI | 0.00 | 1 | -0.40 | 25 | -10.00 | |
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) | | | NOTE: K factor changed | | Colombo International Chess Festival | Colombo | SRI | 2008-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2007 | 1969 | 0.50 | 2 | -0.41 | 15 | -6.15 | |
| | Weerawardane, R | | | 2171 | SRI | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Rathnasekara, Abimanyu | | | 1843 | 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) | | |
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