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Individual Calculations August 2023 |
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| Obeysekara, T A Sajith Chathuran Total change: -20.20 | |   |
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| Sri Lanka Open Chess Championship 2023 | Colombo | SRI | 2023-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1331 | 1684 | 5.50 | 8 | -1.54 | 20 | -30.80 | |
|  Gamage, P Lakindu Chamalka | | | 1284 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Raveendran, Verroshan | | | 1312 | SRI | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Lavanga, D Binuka | | | 1395 | SRI | 0.50 | 1 | -0.34 | 20 | -6.80 | | | Wimalasiri, Ransith Pabalu | | | 1373 | SRI | 0.50 | 1 | -0.36 | 20 | -7.20 | | | Anparasan, T | | | 1384 | SRI | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Sanviru, G H A Dulnith | | | 1253 | SRI | 1.00 | 1 | 0.07 | 20 | 1.40 | | | Koswattage, Biman | | | 1179 | SRI | 0.50 | 1 | -0.46 | 20 | -9.20 | | | Amarathunga, Kosala Sandeepa Cham | | | 1468 | SRI | 0.50 | 1 | -0.28 | 20 | -5.60 | | | * 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) | | | | Sri Lanka National Team Chess Championship 2023 | Colombo | SRI | 2023-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1896 | 1684 | 1.00 | 2 | 0.53 | 20 | 10.60 | |
| | Subasinghe, K R V R | | | 1966 | SRI | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Dickmadugodage, Ravi Prabath | | | 1826 | SRI | 1.00 | 1 | 0.69 | 20 | 13.80 | |
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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