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Individual Calculations February 2018 |
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| Silva, Haren Senura Total change: 26.80 | |   |
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| Sri Lanka National Youth Chess Championship 2017 and 2018 Under - 13 years | Colombo | SRI | 2017-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1216 | 1056 | 1.00 | 4 | -0.15 | 40 | -6.00 | |
|  Basnayake, Kaushal Chaturanga | | | 1237 | SRI | 1.00 | 1 | 0.74 | 40 | 29.60 | |  Wijerathne, L M S D | | | 1247 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Gamarathne, Oneth | | | 1226 | SRI | 0.00 | 1 | -0.28 | 40 | -11.20 | | | Jayawardena, Sadev Dinuja | | | 1155 | SRI | 0.00 | 1 | -0.36 | 40 | -14.40 | |
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) | | | | 22nd Battle of the Kings Inter School Team Chess Championship 2018 | Colombo | SRI | 2018-01-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1228 | 1122 | 2.00 | 3 | 0.82 | 40 | 32.80 | |
| | Goonetilleke, Chanul | | | 1068 | SRI | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Vidushan, Vakeesan | | | 1118 | SRI | 0.50 | 1 | -0.01 | 40 | -0.40 | | | Ranawaka, Nuran Lakshitha N | | | 1498 | SRI | 0.50 | 1 | 0.41 | 40 | 16.40 | |
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) | | |
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