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Individual Calculations May 2011 |
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| Perera, A K N A Total change: 8.55 | |   |
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| Sri Lanka Open International Rating Tournament 2011 | Colombo | SRI | 2011-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1876 | 1661 | 3.00 | 7 | 1.27 | 15 | 19.05 | |
|  Perera, W C C | | | 2061 * | SRI | 0.50 | 1 | 0.42 | 15 | 6.30 | |  Jayasuriya, Dinushka | | | 1851 | SRI | 0.50 | 1 | 0.25 | 15 | 3.75 | | | Weerakoon, D D P | | | 1678 | SRI | 1.00 | 1 | 0.52 | 15 | 7.80 | | | Pinto, Semuthu | | | 1859 | SRI | 1.00 | 1 | 0.76 | 15 | 11.40 | | | Anuruddha, G C | | | 2061 * | SRI | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Lasitha, Subash | | | 1796 | SRI | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Lamahewa, S | | | 1828 | SRI | 0.00 | 1 | -0.28 | 15 | -4.20 | | | * 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 National Youth Under 16 Chess Championship 2011 | Colombo | SRI | 2011-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1511 | 1661 | 0.00 | 1 | -0.70 | 15 | -10.50 | |
| | Malawara Arachchi, Devin Akila | | | 1511 | SRI | 0.00 | 1 | -0.70 | 15 | -10.50 | |
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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