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Individual Calculations April 2009 |
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| Kalugampitiya, R.s. Total change: 10.50 | |   |
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| The Inaugural Royal Challenge International Chess Championship 2009 | Colombo | SRI | 2009-01-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1914 | 2115 | 4.00 | 6 | -0.50 | 15 | -7.50 | |
|  Perera, W.c.c. | | | 1929 | SRI | 1.00 | 1 | 0.26 | 15 | 3.90 | |  Hapuarachchi, H.l.m. | | | 1937 | SRI | 0.00 | 1 | -0.73 | 15 | -10.95 | | | Munasinghe, Lahiru | | | 1860 | SRI | 0.00 | 1 | -0.81 | 15 | -12.15 | | | Seneviratne, Shehan | | | 1765 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Alahakoon, Isuru | | | 1977 | SRI | 1.00 | 1 | 0.31 | 15 | 4.65 | | | De Silva, Osheen | | | 2016 | SRI | 1.00 | 1 | 0.36 | 15 | 5.40 | |
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 Inter Club Super League 08 | Colombo | SRI | 2009-02-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1944 | 2115 | 4.50 | 6 | 0.21 | 15 | 3.15 | |
| | Lakshan, Ruwantha | | | 1765 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Tennakoon, L | | | 1990 | SRI | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Samarakone, Ul | | | 1876 | SRI | 1.00 | 1 | 0.20 | 15 | 3.00 | | | De Silva, Gihan | | | 2027 | SRI | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Miraj, Da | | | 1984 | SRI | 0.00 | 1 | -0.68 | 15 | -10.20 | | | Dissanayake, H | | | 2023 | SRI | 0.50 | 1 | -0.13 | 15 | -1.95 | |
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 Colombo Chess Festival '09 | Colombo | SRI | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2021 | 2115 | 3.50 | 5 | 0.48 | 15 | 7.20 | |
| | Choudhary, Jitendra | | | 1798 | IND | 1.00 | 1 | 0.13 | 15 | 1.95 | | | Narayanan, Srinath | m | | 2397 | IND | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Rohit, V. Lune | | | 1765 | IND | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Kuruwitage, Yasas Kalana | | | 1938 | SRI | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Russell, M.k.a. | | | 2209 | SRI | 0.50 | 1 | 0.13 | 15 | 1.95 | |
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 Open International Rating Chess Tournament 2009 | Kandy | SRI | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2122 | 2115 | 3.50 | 6 | 0.51 | 15 | 7.65 | |
| | Fernando, J.m.m.p. | | | 1966 | SRI | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Sharma, Dinesh K. | m | | 2394 | IND | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Weerawardena, Romesh | | | 2127 | SRI | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Perera, W.c.c. | | | 1929 | SRI | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Jayawardena, Mihiranga | | | 1921 | SRI | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Narayanan, Srinath | m | | 2397 | IND | 0.00 | 1 | -0.16 | 15 | -2.40 | |
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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