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Individual Calculations September 2011 |
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| Perera, Piruna Kamala Total change: -3.60 | |   |
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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 |
| 1808 | 1598 | 1.00 | 3 | 0.31 | 30 | 9.30 | |
|  De Silva, Udara Sandesh | | | 1807 | SRI | 1.00 | 1 | 0.77 | 30 | 23.10 | |  Ediriweera, Shakthi | | | 1815 | SRI | 0.00 | 1 | -0.22 | 30 | -6.60 | | | Harishman, S | | | 1802 | SRI | 0.00 | 1 | -0.24 | 30 | -7.20 | |
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 |
| 1823 | 1598 | 0.00 | 2 | -0.43 | 30 | -12.90 | |
| | Alahakoon, T N | | | 1844 | SRI | 0.00 | 1 | -0.19 | 30 | -5.70 | | | Harishman, S | | | 1802 | SRI | 0.00 | 1 | -0.24 | 30 | -7.20 | |
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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