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Individual Calculations February 2023 |
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| Sandesh, Sithika Total change: -12.80 | |   |
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| Colombo District Youth Chess Championships 2023 - Under 18 | Dehiwala | SRI | 2023-01-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1145 | 1206 | 2.00 | 4 | -0.32 | 40 | -12.80 | |
|  Hendavitharana, D S | | | 1214 | SRI | 0.50 | 1 | 0.01 | 40 | 0.40 | |  Siriwardene, R B Bihandu Janandit | | | 1028 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Perera, G Thinuka Geethula | | | 1174 | SRI | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Nawanjana, R A Thaweesha | | | 1162 | SRI | 0.50 | 1 | -0.06 | 40 | -2.40 | |
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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