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Individual Calculations July 2009 |
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| Amarasinghe, A.a.c.b.j.b. Total change: 21.50 | |   |
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| Sri Lanka Junior National Chess Championship 2009 | Colombo | SRI | 2009-04-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2050 | 1901 | 0.00 | 2 | -0.60 | 25 | -15.00 | |
|  Kottahachchy, K.o.v. | | | 2050 | SRI | 0.00 | 1 | -0.30 | 25 | -7.50 | | | Madugalle, Y.d.b. | | | 2050 | SRI | 0.00 | 1 | -0.30 | 25 | -7.50 | |
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) | | | | Kurunegala Major Chess Championship | Kurunegala | SRI | 2009-04-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1919 | 1901 | 2.50 | 3 | 1.07 | 25 | 26.75 | |
|  Chandrarathne, W.s.n | | | 1933 | SRI | 1.00 | 1 | 0.54 | 25 | 13.50 | | | Liyanage, N.p | | | 1938 | SRI | 0.50 | 1 | 0.05 | 25 | 1.25 | | | Pinto, Semuthu | | | 1887 | SRI | 1.00 | 1 | 0.48 | 25 | 12.00 | |
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) | | | | Sri Lanka B Chess Championship 2009 | Colombo | SRI | 2009-05-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1886 | 1901 | 2.50 | 4 | 0.39 | 25 | 9.75 | |
| | Anuruddha, G.c. | | | 2187 | SRI | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Wickramanayake, T.u. | | | 1853 | SRI | 1.00 | 1 | 0.43 | 25 | 10.75 | | | Rajapakshe, R.m.t.c. | | | 1642 | SRI | 0.50 | 1 | -0.32 | 25 | -8.00 | | | Ranasinghe, C.n. | | | 1860 | SRI | 1.00 | 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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