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Individual Calculations December 2017 |
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| Perera, Isara Ranmeth Total change: 6.00 | |   |
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| Colombo District Youth Chess Championship 2017 Under 13 Boys (2004-2005) | Colombo | SRI | 2017-10-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1127 | 1017 | 0.00 | 1 | -0.35 | 40 | -14.00 | |
|  Jayawardena, Sadev Dinuja | | | 1127 | SRI | 0.00 | 1 | -0.35 | 40 | -14.00 | |
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 2017 | Colombo | SRI | 2017-11-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1239 | 1017 | 1.50 | 4 | 0.50 | 40 | 20.00 | |
| | Theekshana, H G Denuwan | | | 1417 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Saravanabaavan, Brijeash | | | 1353 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Devinda, D W M Dinupa | | | 1020 | SRI | 1.00 | 1 | 0.50 | 40 | 20.00 | | | Methiyra, G P Detumini | | | 1166 | SRI | 0.50 | 1 | 0.20 | 40 | 8.00 | | | * 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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