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Individual Calculations October 2018 |
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| Rathnayaka, Minaga Yethmin Total change: -2.80 | |   |
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| 4th Negambo International Chess Festival 2018 | Negambo | SRI | 2018-08-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1322 | 1044 | 0.00 | 3 | -0.50 | 40 | -20.00 | |
|  Chandes, K Yasindu | | | 1314 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Basnayake, B M Thesandu Aken | | | 1310 | SRI | 0.00 | 1 | -0.18 | 40 | -7.20 | |  Wijesinghe, W A D Sumudu | | | 1343 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | |
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) | | | | Sri Lanka Junior National Chess Championship 2018 | Colombo | SRI | 2018-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1193 | 1044 | 2.00 | 5 | 0.43 | 40 | 17.20 | |
| | Weerasinghe, Isum | | | 1373 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Mannaperuma, M M Pamudu Thamara | | | 1173 | SRI | 0.00 | 1 | -0.33 | 40 | -13.20 | | | Amarathunga, W A S V | | | 1210 | SRI | 0.00 | 1 | -0.28 | 40 | -11.20 | | | Ranaraja, Saumya I | | | 1125 | SRI | 1.00 | 1 | 0.61 | 40 | 24.40 | | | Senevirathne, D C B K | | | 1082 | SRI | 1.00 | 1 | 0.55 | 40 | 22.00 | |
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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