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Individual Calculations April 2008 |
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| Kurukulasuriya, Prasanna Total change: -15.90 | |   |
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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 |
| 2013 | 2052 | 2.50 | 5 | -0.24 | 15 | -3.60 | |
|  De, Silva Osheen | | | 1936 | SRI | 1.00 | 1 | 0.34 | 15 | 5.10 | | | , Wijesuriya.g.l | | | 2164 | SRI | 0.00 | 1 | -0.35 | 15 | -5.25 | |  De, Moraes Shamine | | | 1994 | SRI | 0.00 | 1 | -0.58 | 15 | -8.70 | | | Weerawardane, R | | | 2171 | SRI | 1.00 | 1 | 0.66 | 15 | 9.90 | | | Kottahachchy, K.o.v | | | 1801 | SRI | 0.50 | 1 | -0.31 | 15 | -4.65 | |
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 |
| 2005 | 2052 | 5.50 | 13 | -1.64 | 15 | -24.60 | |
| | Dissanayake, Rs | | | 2038 | SRI | 0.00 | 1 | -0.52 | 15 | -7.80 | | | De, Silwa N Rashin | | | 1969 | SRI | 0.00 | 1 | -0.61 | 15 | -9.15 | | | Nishendra, Herath | | | 1980 | SRI | 0.00 | 1 | -0.60 | 15 | -9.00 | | | Kuruppu, Danuke | | | 2094 | SRI | 1.00 | 1 | 0.56 | 15 | 8.40 | | | Amarakoon, Naditha Thilanga | | | 1702 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Telge, Peiris Gayan Madushanka | | | 1999 | SRI | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Russell, M K A | | | 2187 | SRI | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Ketalawala, J.k.c. | | | 1716 | SRI | 1.00 | 1 | 0.12 | 15 | 1.80 | | | Kottahachchy, K O V | | | 1799 | SRI | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Edirisinghe, Dulan | | | 2197 | SRI | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Rajapaksha, Rmcm | | | 2108 | SRI | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Wijesurija, G Laxman | | | 2105 | SRI | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Annurudha, G C | | | 2167 | SRI | 0.00 | 1 | -0.34 | 15 | -5.10 | |
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) | | | | 12th Rakan Muda GACC World Inter-Varsity Chess Championship | Kuala Lumpur | MAS | 2007-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2191 | 2052 | 2.50 | 5 | 0.81 | 15 | 12.15 | |
| | Ly, Hong Nguyen | f | | 2306 | VIE | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Roderick, Nava | f | | 2351 | PHI | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Wijekoon, Chandana | | | 1989 | SRI | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Akshay, Deshmukh | | | 1992 | IND | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Moosavian, S. Hamed | f | | 2319 | IRI | 0.50 | 1 | 0.32 | 15 | 4.80 | |
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 International Chess Festival | Colombo | SRI | 2008-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1981 | 2052 | 3.00 | 5 | 0.01 | 15 | 0.15 | |
| | Reddy, S. Tejaswini | | | 1967 | IND | 0.00 | 1 | -0.62 | 15 | -9.30 | | | Hapuarachchi, H L M | | | 1886 | SRI | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Wijesuriya, G V | | wc | 1897 | SRI | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Russell, M K A | | | 2187 | SRI | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Priyankara, Chamil Y | | | 1967 | SRI | 1.00 | 1 | 0.38 | 15 | 5.70 | |
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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