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Individual Calculations July 2010 |
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| Jayarathne, Savindhi Total change: 14.75 | |   |
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| Sri Lanka Major Division Galle Chess Championship 2010 | Galle | SRI | 2010-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1891 | 1491 | 0.00 | 1 | -0.08 | 25 | -2.00 | |
|  Amarasena, Kaveesha | | | 1891 * | SRI | 0.00 | 1 | -0.08 | 25 | -2.00 | | | * 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) | | | | Sri Lanka Women's National B Chess Championship 2010 | Colombo | SRI | 2010-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1638 | 1491 | 1.50 | 4 | 0.25 | 25 | 6.25 | |
| | Jayawardhana, W A S H | | | 1679 | SRI | 0.50 | 1 | 0.24 | 25 | 6.00 | |  Lamawansa, Yashmi | | | 1697 | SRI | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Sathya, S.p | | | 1653 | SRI | 0.50 | 1 | 0.21 | 25 | 5.25 | | | Koswattha K, W D M D I | | | 1522 | SRI | 0.50 | 1 | 0.04 | 25 | 1.00 | |
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) | | | | 1st Kandy Open Chess Championship 2010 | Kandy | SRI | 2010-05-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1885 | 1485 | 0.50 | 1 | 0.42 | 25 | 10.50 | |
| | Sivagurunathan, Viththiyaranei | | | 1885 * | SRI | 0.50 | 1 | 0.42 | 25 | 10.50 | | | * 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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