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Individual Calculations June 2023 |
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| Akuratiya, A G Hansadie Aradhya Total change: 14.40 | |   |
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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 |
| 1275 | 1222 | 2.50 | 4 | 0.44 | 40 | 17.60 | |
|  Sivathanujan, S | | | 1833 | SRI | 0.00 | 1 | -0.02 | 40 | -0.80 | |  Bandusena, A K Hirun Theenuka | | | 1073 | SRI | 0.50 | 1 | -0.20 | 40 | -8.00 | | | Perera, G G U Nawathma | | | 1051 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Bandara, B G S N R | | | 1143 | SRI | 1.00 | 1 | 0.39 | 40 | 15.60 | |
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) | | | | Sri Lanka National Youth Chess Championship 2022 - Under 12Yrs Girls | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1275 | 1222 | 2.00 | 4 | 0.14 | 40 | 5.60 | |
| | De Silva, B P Chanthuli Thanishka | | | 1225 | SRI | 0.00 | 1 | -0.50 | 40 | -20.00 | | | Abeyrathne, M P Dulansa Dewmini | | | 1156 | SRI | 1.00 | 1 | 0.41 | 40 | 16.40 | | | Munasinghe, M A D D D | | | 1061 | SRI | 1.00 | 1 | 0.29 | 40 | 11.60 | | | Gunawardhana, Devindya Oshini | | | 1656 | SRI | 0.00 | 1 | -0.06 | 40 | -2.40 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1163 | 1198 | 2.00 | 4 | -0.22 | 40 | -8.80 | |
| | Piyasiri, M S | | | 1032 | SRI | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Kalhan, S Vojitha | | | 1076 | SRI | 1.00 | 1 | 0.33 | 40 | 13.20 | | | Wimalarathne, K G | | | 1442 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Amarasinghe, Umayangi Dilhara | | | 1100 | SRI | 0.00 | 1 | -0.63 | 40 | -25.20 | |
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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