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Individual Calculations May 2012 |
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| Koggala, Wsvk Total change: 15.30 | |   |
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| Sri Lanka National B Chess Championship 2012 | Colombo | SRI | 2012-03-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1931 | 2020 | 6.50 | 10 | 0.31 | 15 | 4.65 | |
|  Lamahewa, S | | | 1828 | SRI | 0.50 | 1 | -0.25 | 15 | -3.75 | |  Karunarathne, Wmvwb | | | 1783 | SRI | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Fonseka, Ckd | | | 1890 | SRI | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Dissanayake, Rs | | | 1978 | SRI | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Saranga, Nco | | | 1954 | SRI | 0.50 | 1 | -0.09 | 15 | -1.35 | | | Perera, Ln | | | 1949 | SRI | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Peiris, Tss | | | 2034 | SRI | 1.00 | 1 | 0.52 | 15 | 7.80 | | | De Silva, Osheen | | | 1889 | SRI | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Anuruddha, ,gc | | | 2098 | SRI | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Liyanage, Np | | | 1905 | SRI | 0.50 | 1 | -0.16 | 15 | -2.40 | |
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 2012 | Colombo | SRI | 2012-03-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1997 | 2020 | 7.50 | 13 | 0.71 | 15 | 10.65 | |
| | Anuruddha, G C | | | 2098 | SRI | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Kalugampitiya, R S | | | 2126 | SRI | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Wijekoon, Chandana | | | 1997 | SRI | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Edirisinghe, Dulan | | | 2036 | SRI | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Madumadha, M Chaithika Samith | | | 1893 | SRI | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Jayasundara, P K U M | | | 2012 | SRI | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Saranga, N C O | | | 1954 | SRI | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Alahakoon, Isuru | | | 1957 | SRI | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Wimalasuriya, Kasun M | | | 1620 * | SRI | 0.50 | 1 | -0.42 | 15 | -6.30 | | | Kurukulasuriya, Prasanna | | | 2078 | SRI | 0.00 | 1 | -0.42 | 15 | -6.30 | | | De Silva, Osheen | | | 1889 | SRI | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Perera, W C C | | | 2126 | SRI | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Weeramantry, Sunil | f | | 2177 | SRI | 1.00 | 1 | 0.71 | 15 | 10.65 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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