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Individual Calculations September 2011 |
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| Madumadha, M Chaithika Samith Total change: 64.80 | |   |
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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 |
| 1955 | 1723 | 0.50 | 2 | 0.08 | 30 | 2.40 | |
|  Karunarathne, D C J | | | 1966 | SRI | 0.50 | 1 | 0.30 | 30 | 9.00 | | | Premachandra, G T D | | | 1944 | SRI | 0.00 | 1 | -0.22 | 30 | -6.60 | |
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 |
| 1937 | 1723 | 3.00 | 4 | 2.08 | 30 | 62.40 | |
| | Priyankara, Chamil | | | 1936 | SRI | 1.00 | 1 | 0.77 | 30 | 23.10 | |  Lamawansa, Yasas | | | 1884 | SRI | 0.50 | 1 | 0.21 | 30 | 6.30 | | | Mendis, W G Chinthaka | | | 1921 | SRI | 0.50 | 1 | 0.26 | 30 | 7.80 | | | Wijekoon, Chandana | | | 2008 | SRI | 1.00 | 1 | 0.84 | 30 | 25.20 | |
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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