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Individual Calculations November 2018 |
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| Premathilaka, W P P G Sampath Total change: -17.60 | |   |
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| Buddhi Open International Rating Chess Tournament 2018 | Gampaha | SRI | 2018-09-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1273 | 1065 | 0.50 | 4 | -0.44 | 40 | -17.60 | |
|  Chandes, K Yasindu | | | 1294 | SRI | 0.00 | 1 | -0.21 | 40 | -8.40 | | | Perera, D G D Y Adeekshana | | | 1323 | SRI | 0.00 | 1 | -0.18 | 40 | -7.20 | |  Wijesinghe, W M M N | | | 1283 | SRI | 0.50 | 1 | 0.28 | 40 | 11.20 | | | Perera, D G D S Vidarsha | | | 1190 | 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) | | |
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