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Individual Calculations February 2020 |
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| Pathirage, Yukitha Kenula Perera Total change: -5.60 | |   |
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| Sri Lanka National Youth Chess Championship 2019 - Under 11 years | Colombo | SRI | 2019-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1313 | 1103 | 1.00 | 4 | 0.03 | 40 | 1.20 | |
|  Wickramarathne, T D | c | | 1442 | SRI | 0.50 | 1 | 0.38 | 40 | 15.20 | | | Dissanayake, D M S L | | | 1248 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | |  Gamage, A G R Ruwanmith | | | 1331 | SRI | 0.50 | 1 | 0.29 | 40 | 11.60 | | | Bandara, T M Himath Indeewara | | | 1229 | SRI | 0.00 | 1 | -0.33 | 40 | -13.20 | |
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 |
| 1281 | 1153 | 0.50 | 2 | -0.17 | 40 | -6.80 | |
| | Pinnagoda, P G Anuhas Suradunu | | | 1191 | SRI | 0.50 | 1 | 0.05 | 40 | 2.00 | | | Sandaruwan, M G Ravindu | | | 1370 | SRI | 0.00 | 1 | -0.22 | 40 | -8.80 | |
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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