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Individual Calculations June 2023 |
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| Withanage, Mahiru Mihimeth Total change: -64.00 | |   |
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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 |
| 1196 | 1020 | 1.00 | 5 | -0.39 | 40 | -15.60 | |
|  Waidyasekara, R H Risara Geeneth | | | 1097 | SRI | 0.00 | 1 | -0.39 | 40 | -15.60 | |  De Silva, D Nawam Sarojen | | | 1153 | SRI | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Fonseka, Waranakulasuriya Chan Ch | | | 1297 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Tharanga, T A | | | 1136 | SRI | 0.00 | 1 | -0.34 | 40 | -13.60 | | | Kaumina, M Yashika | | | 1295 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | |
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 National Youth Chess Championship 2023 - Under 12Yrs Open | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1115 | 1020 | 1.00 | 4 | -0.49 | 40 | -19.60 | |
| | Gunasekara, Aritha Chanthula Abes | | | 1152 | SRI | 0.00 | 1 | -0.32 | 40 | -12.80 | | | Premarathne, Sahas Nethmira | | | 1066 | SRI | 0.50 | 1 | 0.06 | 40 | 2.40 | | | Perera, Onitha Methmira | | | 1131 | SRI | 0.00 | 1 | -0.35 | 40 | -14.00 | | | Suraweera, Dulin Hansilu | | | 1110 | SRI | 0.50 | 1 | 0.12 | 40 | 4.80 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1122 | 1020 | 0.00 | 2 | -0.72 | 40 | -28.80 | |
| | Nimsara, M A Nethuka | | | 1174 | SRI | 0.00 | 1 | -0.29 | 40 | -11.60 | | | Ruwanwella, R.g. Desindu Chiranit | | | 1069 | SRI | 0.00 | 1 | -0.43 | 40 | -17.20 | |
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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