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Individual Calculations February 2020 |
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| Alahapperuma, N Mihinadi Total change: -36.40 | |   |
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| Sri Lanka National Youth Chess Championship 2019 - Under 13 years Girls | Colombo | SRI | 2019-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1329 | 1111 | 0.00 | 2 | -0.44 | 40 | -17.60 | |
|  Wilvalaarachchi, Oneli Omaya | | | 1340 | SRI | 0.00 | 1 | -0.21 | 40 | -8.40 | | | Herath, H M M D | | | 1318 | SRI | 0.00 | 1 | -0.23 | 40 | -9.20 | |
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) | | | | 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 |
| 1122 | 1111 | 0.50 | 2 | -0.47 | 40 | -18.80 | |
| | Jayashanka, S A D Sadeepa | | | 1061 | SRI | 0.50 | 1 | -0.07 | 40 | -2.80 | |  Amarathunga, W A S V | | | 1182 | SRI | 0.00 | 1 | -0.40 | 40 | -16.00 | |
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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