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Individual Calculations August 2023 |
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| Pathmasiri, R D Isuru Saranga Total change: -8.40 | |   |
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| Sri Lanka Open Chess Championship 2023 | Colombo | SRI | 2023-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1379 | 1304 | 2.00 | 6 | -0.75 | 20 | -15.00 | |
|  Chandula, E D S | | | 1659 | SRI | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Pitigala, Chandra Sudarman S. | | | 1917 | SRI | 1.00 | 1 | 0.98 | 20 | 19.60 | | | Hettiarachchi, Jeewantha Aloka | | | 1460 | SRI | 0.00 | 1 | -0.29 | 20 | -5.80 | |  Edirisinghe, E M Shanulya Deenu T | | | 1010 | SRI | 0.00 | 1 | -0.85 | 20 | -17.00 | | | Sathsilu, P M Menuka | | | 1051 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Abhayaratna, Ometh | | | 1178 | SRI | 0.00 | 1 | -0.67 | 20 | -13.40 | |
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 Team Chess Championship 2023 | Colombo | SRI | 2023-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1407 | 1298 | 2.00 | 4 | 0.33 | 20 | 6.60 | |
| | Dickmadugodage, Ravi Prabath | | | 1826 | SRI | 0.00 | 1 | -0.03 | 20 | -0.60 | | | Senarathna, Chamithu Dewwin | | | 1123 | SRI | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Liyanage, K P L | | | 1530 | SRI | 0.00 | 1 | -0.21 | 20 | -4.20 | | | De Silva, Thisum Laknuja | | | 1150 | SRI | 1.00 | 1 | 0.30 | 20 | 6.00 | |
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) | | |
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