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Individual Calculations September 2011 |
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| Premachandra, G T D Total change: 39.75 | |   |
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| Sri Lanka Major Division Colombo Chess Championship, 2011 | Colombo | SRI | 2011-07-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1768 | 1944 | 4.50 | 6 | 0.19 | 15 | 2.85 | |
|  Doluweera, Minul Sanjula | | | 1639 | SRI | 1.00 | 1 | 0.14 | 15 | 2.10 | |  Peramunugama, Asiri | | | 1751 | SRI | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Perera, A K N A | | | 1670 | SRI | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Methmali, Y | | | 1851 | SRI | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Jayasundara, P K U M | | | 1971 | SRI | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Madumadha, M Chaithika Samith | | | 1723 | SRI | 1.00 | 1 | 0.22 | 15 | 3.30 | |
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) | | | | Mora Kings International Rating Chess Championship 2011 | Moratuwa | SRI | 2011-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1924 | 1944 | 6.00 | 7 | 2.46 | 15 | 36.90 | |
| | Samarathunga, S Chanaka Janitha | | | 1644 | SRI | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Gunaratne, Mojitha Sathsara | | | 1547 | SRI | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Kurukulasuriya, Prasanna | | | 2073 | SRI | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Pitigala, Chandra Sudarman S | | | 2083 | SRI | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Weerawardane, R | | | 2160 | SRI | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Bhagya, Viman | | | 2035 | SRI | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Alahakoon, Isuru | | | 1924 | SRI | 1.00 | 1 | 0.47 | 15 | 7.05 | |
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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