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Individual Calculations June 2023 |
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| Sampath, H K G Total change: 10.20 | |   |
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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 |
| 1261 | 1058 | 2.00 | 4 | 0.89 | 20 | 17.80 | |
|  Nirushiya, A | | | 1087 | SRI | 1.00 | 1 | 0.54 | 20 | 10.80 | |  Rupasinghe, R A L P | | | 1414 | SRI | 0.50 | 1 | 0.39 | 20 | 7.80 | | | Perera, G Thinuka Geethula | | | 1457 | SRI | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Wanniarachchi, Senuka Buvindu | | | 1084 | SRI | 0.50 | 1 | 0.04 | 20 | 0.80 | |
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) | | | | Sri Lanka Mercantile and Government Service Chess Championship 2023 | Colombo | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1452 | 1058 | 0.00 | 2 | -0.17 | 20 | -3.40 | |
| | Welivitigoda, S K | | | 1483 | SRI | 0.00 | 1 | -0.07 | 20 | -1.40 | | | Deshappriya, D Kalindu | | | 1421 | SRI | 0.00 | 1 | -0.10 | 20 | -2.00 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1214 | 1058 | 2.00 | 6 | -0.21 | 20 | -4.20 | |
| | Newansa, M Esandi | | | 1537 | SRI | 0.50 | 1 | 0.45 | 20 | 9.00 | | | Weerathungalage, W D Malisha Sasv | | | 1604 | SRI | 0.00 | 1 | -0.03 | 20 | -0.60 | | | Premaratne, Sandira Senula | | | 1009 | SRI | 0.00 | 1 | -0.57 | 20 | -11.40 | | | Mayadunna, D Thimesh | | | 1017 | SRI | 0.50 | 1 | -0.06 | 20 | -1.20 | | | Raheem, Malik | | | 1037 | SRI | 1.00 | 1 | 0.47 | 20 | 9.40 | | | Rathnayake, Disula | | | 1080 | SRI | 0.00 | 1 | -0.47 | 20 | -9.40 | |
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) | | |
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