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Individual Calculations January 2019 |
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| De Silva, Osheen Total change: -6.40 | |   |
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| Sri Lanka Inter Club B Chess Championship 2018 | Colombo | SRI | 2018-12-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1610 | 1814 | 3.00 | 3 | 0.82 | 20 | 16.40 | |
|  Dissanayake, R K T | | | 1850 | SRI | 1.00 | 1 | 0.55 | 20 | 11.00 | |  De Silva, L H L Manuja Lakshitha | | | 1414 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Tennakoon, I L K | | | 1566 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | | | * 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 2018 | Kurunegala | SRI | 2018-12-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1433 | 1814 | 4.00 | 6 | -1.45 | 20 | -29.00 | |
| | Wickramasinghe, W M D S D | | | 1414 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Wijerathne, L M S D | | | 1414 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Thawalampola, Oshada D | | | 1458 | SRI | 0.00 | 1 | -0.89 | 20 | -17.80 | | | Rohana, V T Malitha | | | 1414 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Abhimanyu, Iraja | | | 1467 | SRI | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Pathmasiri, R D Isuru Saranga | | | 1431 | SRI | 0.00 | 1 | -0.91 | 20 | -18.20 | | | * 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) | | | | Kolonnawa Chess Classic 2018 | Colombo | SRI | 2018-12-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1541 | 1814 | 7.50 | 9 | 0.31 | 20 | 6.20 | |
| | Edirisinghe, Shanuka Dulnath | | | 1414 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Epa, W Buthmi J | | | 1414 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Sathmina, S L Lalindu | | | 1443 | SRI | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Gamage, Ovin Vidmal | | | 1547 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Kodithuwakku, Himsara | | | 1601 | SRI | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Weerasinghe, Isum | | | 1434 | SRI | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Morais, Sanithu Leander Pamudith | | | 1417 | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Kodithuwakku, Lisara | | | 1681 | SRI | 0.50 | 1 | -0.18 | 20 | -3.60 | | | Amarasinghe, A A C B | | | 1922 | SRI | 1.00 | 1 | 0.65 | 20 | 13.00 | | | * 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) | | |
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