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Individual Calculations March 2015 |
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| De Silva, Osheen Total change: -2.80 | |   |
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| Colombo Chess Festival 2015 | Colombo | SRI | 2015-01-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1681 | 1886 | 7.00 | 9 | 0.30 | 20 | 6.00 | |
|  Kandeeban, Sivasothy | | | 1486 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Suranjith, K W A | | | 1538 | SRI | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Jayaweera, Y | | | 1626 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Rajapaksa, Miyuni Kavinya | | | 1628 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Lamawansa, Yasas | | | 1910 | SRI | 0.00 | 1 | -0.47 | 20 | -9.40 | | | Karunarathna, Chathupa Induwara | | | 1744 | SRI | 1.00 | 1 | 0.31 | 20 | 6.20 | | | Perera, Jayashanka | | | 1759 | SRI | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Nanayakkara, J A K Saranath | | | 1604 | SRI | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Madushanka, Harsha | | | 1830 | SRI | 0.50 | 1 | -0.08 | 20 | -1.60 | | | * 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 Major Division Chess Championship 2015 Colombo | Colombo | SRI | 2015-02-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1689 | 1891 | 5.50 | 8 | -0.44 | 20 | -8.80 | |
| | Perera, Tharusha Salinda | | | 1491 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Dayarathne, D M S N | | | 1606 | SRI | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Nanayakkara, J A K Saranath | | | 1700 | SRI | 0.50 | 1 | -0.25 | 20 | -5.00 | | | Hettiarachchi, C U | | | 1690 | SRI | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Doluweera, Minul Sanjula | c | | 1974 | SRI | 0.00 | 1 | -0.39 | 20 | -7.80 | | | Jeyanthan, Krishna Rahul | | | 1594 | SRI | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Pinto, Semuthu | | | 1767 | SRI | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Kaveen, Ishara | | | 1692 | SRI | 0.50 | 1 | -0.26 | 20 | -5.20 | | | * 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) | | |
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