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Individual Calculations September 2015 |
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| Perera, Thisura Damsith Total change: -32.00 | |   |
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| National Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1525 | 1168 | 0.00 | 2 | -0.22 | 40 | -8.80 | |
|  Liyanage, Ranindu Dilshan | | | 1568 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Gunasekara , W A N Senpathi | | | 1481 | SRI | 0.00 | 1 | -0.14 | 40 | -5.60 | | | * 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) | | | | Sri Lanka Open Chess Championship 2015 | Colombo | SRI | 2015-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1327 | 1168 | 0.00 | 2 | -0.58 | 40 | -23.20 | |
| | Jayawardana, Lasal | | | 1342 | SRI | 0.00 | 1 | -0.27 | 40 | -10.80 | |  Perera, Hansini | | | 1312 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | |
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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