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Individual Calculations July 2009 |
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| Gunasinghe, S.r. Total change: 24.00 | |   |
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| Galle Major Chess Championship 2009 | Galle | SRI | 2009-04-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1877 | 1940 | 3.00 | 5 | 0.09 | 15 | 1.35 | |
|  Subash, Lasitha | | | 1880 | SRI | 0.50 | 1 | -0.08 | 15 | -1.20 | |  De Moraes, Shamin | | | 1951 | SRI | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Jayaratne, M.n.g. | | | 1756 | SRI | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Gunasinghe, W.a.t.s. | | | 1891 | SRI | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Amarasena, Kaveesha | | | 1908 | SRI | 0.50 | 1 | -0.04 | 15 | -0.60 | |
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) | | | | Sri Lanka B Chess Championship 2009 | Colombo | SRI | 2009-05-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2029 | 1940 | 4.00 | 8 | 0.92 | 15 | 13.80 | |
| | Weerawardena, R. | | | 2180 | SRI | 1.00 | 1 | 0.80 | 15 | 12.00 | | | Kurukulasuriya, Prasanna | | | 2085 | SRI | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Edirisinghe, Dulan | | | 2128 | SRI | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Premachandra, D. | | | 1833 | SRI | 1.00 | 1 | 0.35 | 15 | 5.25 | | | Kottahachchy, K.o.v | | | 2050 | SRI | 1.00 | 1 | 0.65 | 15 | 9.75 | | | Jayawardena, Mihiranga | | | 1920 | SRI | 0.50 | 1 | -0.03 | 15 | -0.45 | | | Wijesuriya, G.l. | | | 2049 | SRI | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Perera, L.n | | | 1987 | SRI | 0.50 | 1 | 0.07 | 15 | 1.05 | |
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 2009 | Colombo | SRI | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2077 | 1940 | 4.50 | 12 | 0.59 | 15 | 8.85 | |
| | Wijekoon, Chandana | | | 1965 | SRI | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Kalugampitiya, R S | | | 2126 | SRI | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Jayawardena, M | | | 1920 | SRI | 0.50 | 1 | -0.03 | 15 | -0.45 | | | Kurukulasuriya, Prasanna | | | 2085 | SRI | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Wijesuriya, G Luxman | | | 2049 | SRI | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Edirisinghe, Dulan | | | 2128 | SRI | 1.00 | 1 | 0.74 | 15 | 11.10 | | | Mallawarachchi, T S | | | 2075 | SRI | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Annurudha, G C | | | 2187 | SRI | 0.50 | 1 | 0.31 | 15 | 4.65 | | | Russell, M K A | | | 2241 | SRI | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Peiris, T G M | | | 2129 | SRI | 0.50 | 1 | 0.25 | 15 | 3.75 | | | Hapuarachchi, H L M | | | 1963 | SRI | 0.50 | 1 | 0.03 | 15 | 0.45 | | | Kottahachchy, K O V | | | 2050 | SRI | 0.00 | 1 | -0.35 | 15 | -5.25 | |
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) | | |
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