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Individual Calculations July 2010 |
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| De Silva, Osheen Total change: 22.20 | |   |
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| Sri Lanka Major Division Galle Chess Championship 2010 | Galle | SRI | 2010-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1772 | 1930 | 3.00 | 5 | -0.46 | 15 | -6.90 | |
|  Kumarasinghe, Nhu Ranmudu | | | 1530 * | SRI | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Gunasinghe, Wats | | | 1821 | SRI | 0.00 | 1 | -0.65 | 15 | -9.75 | |  Subash, Lasitha | | | 1897 | SRI | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Egodage, Keshan | | | 1792 | SRI | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Prabajith, Asela | | | 1820 | SRI | 0.50 | 1 | -0.15 | 15 | -2.25 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 B Chess Championship 2010 | Colombo | SRI | 2010-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2048 | 1930 | 5.50 | 9 | 2.41 | 15 | 36.15 | |
| | Kurukulasuriya, Prasanna | | | 2057 | SRI | 1.00 | 1 | 0.67 | 15 | 10.05 | | | Athukorala, P M A B | | | 2127 | SRI | 1.00 | 1 | 0.75 | 15 | 11.25 | | | Dissanayake, R S | | | 2030 | SRI | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Pieris, T D R | | | 2083 | SRI | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Anuruddha, G C | | | 2148 | SRI | 0.50 | 1 | 0.28 | 15 | 4.20 | | | Peiris, T S S | | | 2003 | SRI | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Wijekoon, Chandana | | | 1961 | SRI | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Bandara, P M R L | | | 1995 | SRI | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Mallawarachchi, T S | | | 2029 | SRI | 0.50 | 1 | 0.14 | 15 | 2.10 | |
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 2010 | Colombo | SRI | 2010-05-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2039 | 1948 | 4.50 | 13 | -0.47 | 15 | -7.05 | |
| | Dissanayake, R S | | | 2030 | SRI | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Perera, W C C | | | 1963 | SRI | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Bandara, P M R L | | | 1995 | SRI | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Anuruddha, G C | | | 2120 | SRI | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Athukorala, P M A B | | | 2127 | SRI | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Russell, M K A | | | 2269 | SRI | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Wijekoon, Chandana | | | 1958 | SRI | 1.00 | 1 | 0.51 | 15 | 7.65 | | | Amarasena, Kaveesha | | | 1926 | SRI | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Peiris, T S S | | | 2003 | SRI | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Weerawardane, R | | | 2165 | SRI | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Jayasundara, P K U M | | | 1954 | SRI | 0.00 | 1 | -0.49 | 15 | -7.35 | | | Pieris, T D R | | | 2062 | SRI | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Koggala, W S V K | | | 1940 | SRI | 0.00 | 1 | -0.51 | 15 | -7.65 | |
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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