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Individual Calculations February 2018 |
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| Mapa, M M W H Total change: -8.80 | |   |
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| Sri Lanka National Youth Chess Championship 2017 and 2018 Under - 13 years Girls | Colombo | SRI | 2017-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1077 | 1290 | 4.00 | 6 | -0.62 | 40 | -24.80 | |
|  Atapattu, Thenugi Linaya | | | 1010 | SRI | 1.00 | 1 | 0.16 | 40 | 6.40 | |  Samarakoon, S M Udani Adithya | | | 1064 | SRI | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Withanarachchi, W A P V | | | 1167 | SRI | 0.00 | 1 | -0.67 | 40 | -26.80 | | | Kamaradiwela, K A D M M | | | 1111 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Pabasara, K A Rathmi | | | 1068 | SRI | 0.00 | 1 | -0.78 | 40 | -31.20 | | | Samarakoon, Rashmi Vihara | | | 1043 | SRI | 1.00 | 1 | 0.19 | 40 | 7.60 | |
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) | | | | 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 |
| 1115 | 1189 | 1.00 | 1 | 0.40 | 40 | 16.00 | |
| | Perera, Thisura Damsith | | | 1115 | SRI | 1.00 | 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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