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Individual Calculations February 2020 |
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| Weragoda, W A S Niwanthaka Total change: -10.80 | |   |
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| Sri Lanka National Youth Chess Championship 2019 - Under 13 years | Colombo | SRI | 2019-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1380 | 1044 | 0.00 | 2 | -0.24 | 40 | -9.60 | |
|  Marapana, Sanupa Bimsath | | | 1362 | SRI | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Gunarathne, Senila Amaneth | c | | 1398 | SRI | 0.00 | 1 | -0.11 | 40 | -4.40 | |
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) | | | | Battle of the Kings - All Island Schools Team Chess Championship 2020 | Colombo | SRI | 2020-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1206 | 1026 | 0.50 | 2 | -0.03 | 40 | -1.20 | |
| | Padukka, P V Gayuru Hansana | | | 1180 | SRI | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Perera, Mulina | | | 1231 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | |
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) | | |
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