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Individual Calculations June 2023 |
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| Suraweera, Dulin Hansilu Total change: -31.60 | |   |
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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 |
| 1420 | 1110 | 0.00 | 1 | -0.14 | 40 | -5.60 | |
|  Hettiarachchi, Jeewantha Aloka | | | 1420 | SRI | 0.00 | 1 | -0.14 | 40 | -5.60 | |
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 2023 - Under 12Yrs Open | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1167 | 1110 | 1.00 | 3 | -0.34 | 40 | -13.60 | |
|  Ovitigala, Chenitha Mithvidu | | | 1447 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Ranathunga, R M Methula Sansitha | | | 1034 | SRI | 0.50 | 1 | -0.10 | 40 | -4.00 | | | Withanage, Mahiru Mihimeth | | | 1020 | 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 |
| 1428 | 1110 | 0.00 | 2 | -0.31 | 40 | -12.40 | |
| | Gamage, Ovin Vidmal | | | 1554 | SRI | 0.00 | 1 | -0.06 | 40 | -2.40 | | | Gunawardhane, Dunitha Yathindra | | | 1302 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | |
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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