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Individual Calculations June 2023 |
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| Sithumsa, H G Sasmi Total change: -28.00 | |   |
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| Sri Lanka National Youth Chess Championship 2022 - Under 12Yrs Girls | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1233 | 1147 | 0.00 | 1 | -0.38 | 40 | -15.20 | |
|  Sithumya, W L Sithuli | | | 1233 | SRI | 0.00 | 1 | -0.38 | 40 | -15.20 | |
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) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1266 | 1147 | 2.00 | 5 | 0.26 | 40 | 10.40 | |
| | Thumaljith, A Thenuka | | | 1008 | SRI | 1.00 | 1 | 0.31 | 40 | 12.40 | |  Thalgaswatta, Adeesha Denuwan | | | 1313 | SRI | 0.00 | 1 | -0.28 | 40 | -11.20 | | | Dissanayaka, M A P Mihiranga | | | 1384 | SRI | 1.00 | 1 | 0.80 | 40 | 32.00 | | | Bimansa, D G Jayandi | | | 1343 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Wijerathna, Vinuka Dihain | | | 1280 | SRI | 0.00 | 1 | -0.32 | 40 | -12.80 | |
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 |
| 1441 | 1149 | 0.00 | 3 | -0.58 | 40 | -23.20 | |
| | De Silva, Osheen | | | 1676 | SRI | 0.00 | 1 | -0.03 | 40 | -1.20 | | | Hendavitharana, D S | | | 1389 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Dissanayaka, D A K N R | | | 1258 | SRI | 0.00 | 1 | -0.35 | 40 | -14.00 | |
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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