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Individual Calculations May 2012 |
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| Wijekoon, Chandana Total change: 4.50 | |   |
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| Sri Lanka National B Chess Championship 2012 | Colombo | SRI | 2012-03-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1941 | 1997 | 6.50 | 10 | 0.73 | 15 | 10.95 | |
|  Dissanayake, Rdac | | | 1813 | SRI | 1.00 | 1 | 0.26 | 15 | 3.90 | |  Priyankara, Chamil | | | 1892 | SRI | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Kalugampitiya, Rs | | | 2126 | SRI | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Alahakoon, Amcb | | | 1941 | SRI | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Jayasundara, Pkum | | | 2012 | SRI | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Alahakoon, Isuru | | | 1957 | SRI | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Perera, Ln | | | 1949 | SRI | 0.00 | 1 | -0.57 | 15 | -8.55 | | | Lamawansa, Yasas | | | 1937 | SRI | 1.00 | 1 | 0.42 | 15 | 6.30 | | | Madumadha, Chaithika Samith | | | 1893 | SRI | 0.50 | 1 | -0.14 | 15 | -2.10 | | | De Silva, Osheen | | | 1889 | SRI | 0.50 | 1 | -0.15 | 15 | -2.25 | |
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 Chess Championship 2012 | Colombo | SRI | 2012-03-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1998 | 1997 | 5.00 | 13 | -1.40 | 15 | -21.00 | |
| | Madumadha, M Chaithika Samith | | | 1893 | SRI | 0.00 | 1 | -0.64 | 15 | -9.60 | | | Edirisinghe, Dulan | | | 2036 | SRI | 0.00 | 1 | -0.45 | 15 | -6.75 | | | Koggala, W S V K | | | 2020 | SRI | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Jayasundara, P K U M | | | 2012 | SRI | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Saranga, N C O | | | 1954 | SRI | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Alahakoon, Isuru | | | 1957 | SRI | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Wimalasuriya, Kasun M | | | 1604 | SRI | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Kurukulasuriya, Prasanna | | | 2078 | SRI | 0.00 | 1 | -0.39 | 15 | -5.85 | | | De Silva, Osheen | | | 1889 | SRI | 0.00 | 1 | -0.65 | 15 | -9.75 | | | Perera, W C C | | | 2126 | SRI | 1.00 | 1 | 0.67 | 15 | 10.05 | | | Weeramantry, Sunil | f | | 2177 | SRI | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Anuruddha, G C | | | 2098 | SRI | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Kalugampitiya, R S | | | 2126 | SRI | 0.50 | 1 | 0.17 | 15 | 2.55 | |
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) | | | | 2nd Dhamso International Chess Festival | Ambalangoda | SRI | 2012-04-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1879 | 1997 | 5.50 | 7 | 0.97 | 15 | 14.55 | |
| | Perera, Piruna Kamala | | | 1606 | SRI | 1.00 | 1 | 0.09 | 15 | 1.35 | | | Sandamith, W M | | | 1781 | SRI | 1.00 | 1 | 0.22 | 15 | 3.30 | | | De Moraes, Shamine | | | 1859 | SRI | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Priyankara, Chamil | | | 1892 | SRI | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Abhishek, Das | | | 2271 | IND | 0.50 | 1 | 0.33 | 15 | 4.95 | | | De Silva, Osheen | | | 1889 | SRI | 0.50 | 1 | -0.15 | 15 | -2.25 | | | Fernando, J M M P | | | 1858 | SRI | 1.00 | 1 | 0.31 | 15 | 4.65 | |
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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