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Individual Calculations September 2019 |
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| Wimalasiri, Y G C Kavindi Total change: 3.60 | |   |
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| Sri Lanka open International Rating Chess Championship 2019 | Anuradhapura | SRI | 2019-08-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1267 | 1097 | 0.50 | 2 | -0.10 | 40 | -4.00 | |
|  Gunarathne, Senila Amaneth | c | | 1415 | SRI | 0.50 | 1 | 0.37 | 40 | 14.80 | |  Uyanwaththa, W M S B | | | 1119 | SRI | 0.00 | 1 | -0.47 | 40 | -18.80 | |
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) | | | | 5th Negombo International chess Festival 2019 | Negombo | SRI | 2019-08-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1388 | 1097 | 0.50 | 2 | 0.19 | 40 | 7.60 | |
| | Dissanayake, Praveen Manodya | | | 1394 | SRI | 0.50 | 1 | 0.35 | 40 | 14.00 | | | Nabil Nazar, Mohamed | | | 1381 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | |
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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