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Individual Calculations June 2023 |
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| De Silva, D Nawam Sarojen Total change: 11.80 | |   |
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| Supr Knights Open International Rating Chess Championship 2023 | Colombo | SRI | 2023-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1256 | 1153 | 2.50 | 5 | 0.59 | 40 | 23.60 | |
|  Seenipellage, Himandi Esara | | | 1001 | SRI | 1.00 | 1 | 0.30 | 40 | 12.00 | |  Weerasekara, Dinul Vinsitha | | | 1448 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Withanage, Mahiru Mihimeth | | | 1020 | SRI | 0.00 | 1 | -0.68 | 40 | -27.20 | | | Rupasinghe, R A L P | | | 1414 | SRI | 0.50 | 1 | 0.32 | 40 | 12.80 | | | Jayasundara, J M Theruni V | | | 1397 | SRI | 1.00 | 1 | 0.80 | 40 | 32.00 | |
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 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1407 | 1153 | 0.50 | 4 | -0.59 | 20 | -11.80 | |
| | Alahakoon, Isuru | f | | 1819 | SRI | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Premaratne, Sandira Senula | | | 1009 | SRI | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Yanakan, P | | | 1385 | SRI | 0.00 | 1 | -0.21 | 20 | -4.20 | | | Wettasinha, Vasanta | | | 1413 | SRI | 0.00 | 1 | -0.18 | 20 | -3.60 | |
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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