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Individual Calculations June 2023 |
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| Wettasinha, Vasanta Total change: -26.60 | |   |
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| Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1134 | 1413 | 2.00 | 4 | -1.33 | 20 | -26.60 | |
|  Rathnayake, Disula | | | 1080 | SRI | 0.00 | 1 | -0.88 | 20 | -17.60 | |  Jayathissa, J Y | | | 1091 | SRI | 1.00 | 1 | 0.13 | 20 | 2.60 | | | De Silva, D Nawam Sarojen | | | 1153 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Pathirana, W P Keshara Viraj | | | 1211 | SRI | 0.00 | 1 | -0.76 | 20 | -15.20 | |
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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