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Individual Calculations January 2020 |
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| Sandanayake, Dehansa Nisanduni Total change: -68.00 | |   |
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| 11th Ethugalpura International Chess Championship 2019 | Kurunegala | SRI | 2019-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1313 | 1234 | 1.50 | 4 | -0.23 | 40 | -9.20 | |
|  Wimalasuriya, Kasun M. | c | | 1634 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Gunathilaka, G A Z W | | | 1005 | SRI | 0.50 | 1 | -0.29 | 40 | -11.60 | |  Dasanayake, D M N D | | | 1078 | SRI | 1.00 | 1 | 0.29 | 40 | 11.60 | | | Ranasinghe, R A Malindu Bhathiya | | | 1536 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | | | * 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) | | | | The Kolonnawa Chess Classic International Rating Tournament 2019 | Colombo | SRI | 2019-12-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1373 | 1234 | 1.00 | 4 | -0.31 | 40 | -12.40 | |
| | Alwis, B H A Rasidu | | | 1516 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Ahangama, Senuka Aswin | | | 1473 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Jayawardana, Lesath Thewnija | | | 1113 | SRI | 1.00 | 1 | 0.34 | 40 | 13.60 | | | Arthigan, J | | | 1389 | SRI | 0.00 | 1 | -0.29 | 40 | -11.60 | |
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 Women's National Amateur Chess Championship 2019 | Colombo | SRI | 2019-12-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1286 | 1234 | 1.50 | 6 | -1.16 | 40 | -46.40 | |
| | Gamage, B K Sayumi Hasithma | | | 1061 | SRI | 0.50 | 1 | -0.23 | 40 | -9.20 | | | Kathriarachchi, Dini Nathyaa | | | 1228 | SRI | 0.00 | 1 | -0.51 | 40 | -20.40 | | | Wilvalaarachchi, Oneli Omaya | | | 1340 | SRI | 0.00 | 1 | -0.36 | 40 | -14.40 | | | Abeysekara, Yasasi Geemini | | | 1199 | SRI | 1.00 | 1 | 0.45 | 40 | 18.00 | | | Ramanayake, Nemindi Linaya | | | 1303 | SRI | 0.00 | 1 | -0.40 | 40 | -16.00 | | | Ranasinghe, Shalini | | | 1583 | SRI | 0.00 | 1 | -0.11 | 40 | -4.40 | |
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) | | |
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