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Individual Calculations April 2009 |
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| Kuruwitage, Yasas Kalana Total change: 23.00 | |   |
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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 |
| 1908 | 1938 | 5.50 | 8 | 1.26 | 25 | 31.50 | |
|  Jayasundara, P.k.u.m. | | | 1885 | SRI | 1.00 | 1 | 0.43 | 25 | 10.75 | |  Hapuarachchi, H.l.m. | | | 1937 | SRI | 0.00 | 1 | -0.50 | 25 | -12.50 | | | Seneviratne, Shehan | | | 1588 | SRI | 1.00 | 1 | 0.11 | 25 | 2.75 | | | Seneviratne, Malinda | | | 1853 | SRI | 1.00 | 1 | 0.38 | 25 | 9.50 | | | De Silva, Osheen | | | 2016 | SRI | 0.50 | 1 | 0.11 | 25 | 2.75 | | | Perera, W.c.c. | | | 1929 | SRI | 0.00 | 1 | -0.51 | 25 | -12.75 | | | Ketalawala, J.k.c. | | | 2033 | SRI | 1.00 | 1 | 0.63 | 25 | 15.75 | | | Fonseka, C.k.d. | | | 2020 | SRI | 1.00 | 1 | 0.61 | 25 | 15.25 | |
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) | | | | 2nd Colombo Chess Festival '09 | Colombo | SRI | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1970 | 1938 | 2.00 | 5 | -0.34 | 25 | -8.50 | |
| | Laxman, R.r. | m | | 2288 | IND | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Kushagra, Sharma | | | 1762 | IND | 1.00 | 1 | 0.27 | 25 | 6.75 | | | Premanath, Dinushki | | | 1703 | SRI | 1.00 | 1 | 0.21 | 25 | 5.25 | | | Kalugampitiya, Rajeendra | | | 2115 | SRI | 0.00 | 1 | -0.27 | 25 | -6.75 | | | Miraj, D.a. | | | 1984 | SRI | 0.00 | 1 | -0.44 | 25 | -11.00 | |
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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