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Individual Calculations January 2015 |
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| De Silva, Osheen Total change: -4.80 | |   |
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| Sri Lanka Grand Prix | Colombo | SRI | 2014-11-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2005 | 1897 | 4.00 | 11 | 0.05 | 20 | 1.00 | |
|  Ranasinghe, S D | | wm | 1867 | SRI | 1.00 | 1 | 0.46 | 20 | 9.20 | |  Kandearachchi, Niranga | | | 1990 | SRI | 1.00 | 1 | 0.63 | 20 | 12.60 | | | Doluweera, Minul Sanjula | c | | 2002 | SRI | 0.00 | 1 | -0.36 | 20 | -7.20 | | | Galappaththi, Chinthaka Anuruddh | f | | 2157 | SRI | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Wijekoon, Chandana | c | | 2076 | SRI | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Jayasundara, P K U M | c | | 2046 | SRI | 0.50 | 1 | 0.20 | 20 | 4.00 | | | Kurukulasuriya, Prasanna | f | | 2063 | SRI | 0.50 | 1 | 0.22 | 20 | 4.40 | | | Senanayaka, P D | | | 1773 | SRI | 0.00 | 1 | -0.67 | 20 | -13.40 | | | Weerawardane, Romesh | m | | 2107 | SRI | 0.00 | 1 | -0.23 | 20 | -4.60 | | | Priyankara, Chamil | | | 1953 | SRI | 0.00 | 1 | -0.42 | 20 | -8.40 | | | Bhagya, Viman | | | 2025 | SRI | 0.50 | 1 | 0.17 | 20 | 3.40 | |
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) | | | | Asian Amateur Chess Championship 2014 | Waskaduwa | SRI | 2014-12-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1782 | 1891 | 7.00 | 9 | 1.30 | 20 | 26.00 | |
| | Jayaweera, Sayuni Gihansa | | wc | 1491 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Thilakarathne, G M S | | | 1737 | SRI | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Abeywardana, N T | | | 1660 | SRI | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Yahaya, Muhd Nuriman | | | 1795 | MAS | 0.50 | 1 | -0.13 | 20 | -2.60 | | | Weerasinghe, Chamath | | | 1790 | SRI | 1.00 | 1 | 0.36 | 20 | 7.20 | | | De Silva, Elath Mathanga | | | 1936 | SRI | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Lasitha, Subash | | | 1822 | SRI | 0.50 | 1 | -0.10 | 20 | -2.00 | | | Priyankara, Chamil | | | 1973 | SRI | 1.00 | 1 | 0.61 | 20 | 12.20 | | | Amarasinghe, A A C B | | | 1832 | 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) | | | | Ethugalpura International Rating Chess Championship 2014 | Kurunegala | SRI | 2014-12-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1534 | 1891 | 5.50 | 8 | -1.59 | 20 | -31.80 | |
| | Jayawickrama, U W R K | | | 1491 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Wijesuriya, G P Y | | | 1491 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Gunarathna, D A Viraj Darshana | | | 1532 | SRI | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Ekanayake, A M B | | | 1735 | SRI | 0.00 | 1 | -0.71 | 20 | -14.20 | | | Gamage, Nethmi Nirasha | | | 1491 * | SRI | 0.50 | 1 | -0.42 | 20 | -8.40 | | | De Silva, J I Ajantha | | | 1549 | SRI | 0.00 | 1 | -0.88 | 20 | -17.60 | | | Herath, H M J S | | | 1491 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Chamikara, H M D R Dilusha | | | 1491 * | SRI | 1.00 | 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) | | |
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