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Individual Calculations September 2015 |
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| Rajapaksa, Inura Total change: 21.60 | |   |
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| National Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1443 | 1377 | 2.50 | 5 | 0.34 | 40 | 13.60 | |
|  Gunarathna, D A Viraj Darshana | | | 1518 | SRI | 0.50 | 1 | 0.19 | 40 | 7.60 | |  Bandara, W M Nadil Dulshen | | | 1125 | SRI | 1.00 | 1 | 0.19 | 40 | 7.60 | | | Liyanage, Ranindu Dilshan | | | 1622 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Rajendram, Branavan | | | 1197 | SRI | 1.00 | 1 | 0.26 | 40 | 10.40 | | | Naotunna, D R | | | 1751 | SRI | 0.00 | 1 | -0.10 | 40 | -4.00 | |
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 Open Chess Championship 2015 | Colombo | SRI | 2015-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1406 | 1377 | 4.00 | 8 | 0.20 | 40 | 8.00 | |
| | Pallewela, Yasiru Nikhila | | | 1042 | SRI | 1.00 | 1 | 0.12 | 40 | 4.80 | | | Weerasinghe, Chamath | | | 1777 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Kavithma, Gayuni | | | 1144 | SRI | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Anojman, S. | | | 1707 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Perera, Mulina | | | 1152 | SRI | 1.00 | 1 | 0.22 | 40 | 8.80 | | | Ekanayake, A M B | | | 1650 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Devnaka, Chamin | | | 1178 | SRI | 1.00 | 1 | 0.24 | 40 | 9.60 | | | Thenuka, Kuruwita Gamalathge Kin | | | 1596 | SRI | 0.00 | 1 | -0.22 | 40 | -8.80 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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