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Individual Calculations January 2020 |
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| Jayathilake, Hiruka Dulneth Total change: 3.20 | |   |
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| The Kolonnawa Chess Classic International Rating Tournament 2019 | Colombo | SRI | 2019-12-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1344 | 1027 | 0.50 | 3 | 0.08 | 40 | 3.20 | |
|  Gunarathne, Senila Amaneth | c | | 1398 | SRI | 0.50 | 1 | 0.40 | 40 | 16.00 | |  Arthigan, J | | | 1389 | SRI | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Gunathilake, M D Vinuda Shenal | | | 1244 | SRI | 0.00 | 1 | -0.22 | 40 | -8.80 | |
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) | | |
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