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Individual Calculations August 2023 |
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| Amarathunga, Kosala Sandeepa Cham Total change: 31.60 | |   |
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| Sri Lanka Open Chess Championship 2023 | Colombo | SRI | 2023-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1435 | 1468 | 5.50 | 8 | 1.10 | 40 | 44.00 | |
|  Anjana , S A Isuru | | | 1068 * | SRI | 1.00 | 1 | 0.08 | 40 | 3.20 | |  Siriwardene, R B Bihandu Janandit | | | 1203 | SRI | 1.00 | 1 | 0.18 | 40 | 7.20 | | | Amarasinghe, A A C B | c | | 1841 | SRI | 1.00 | 1 | 0.90 | 40 | 36.00 | | | Liyanage, Pesandu Rashmitha | | | 1893 | SRI | 0.00 | 1 | -0.07 | 40 | -2.80 | | | Sanviru, G H A Dulnith | | | 1253 | SRI | 0.00 | 1 | -0.77 | 40 | -30.80 | | | Vishaleni, U | | | 1199 | SRI | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Labunahewage, Dulein Bimsath | | | 1339 | SRI | 1.00 | 1 | 0.33 | 40 | 13.20 | | | Obeysekara, T A Sajith Chathuran | | | 1684 | SRI | 0.50 | 1 | 0.28 | 40 | 11.20 | | | * 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) | | | | Sri Lanka National Team Chess Championship 2023 | Colombo | SRI | 2023-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1602 | 1484 | 1.00 | 3 | -0.31 | 40 | -12.40 | |
| | Perera, W C C | c | | 2079 | SRI | 0.00 | 1 | -0.02 | 40 | -0.80 | | | Sathsindu, W M Minura | | | 1521 | SRI | 0.00 | 1 | -0.45 | 40 | -18.00 | | | Yumeth, K L A Venuka | | | 1205 | SRI | 1.00 | 1 | 0.16 | 40 | 6.40 | |
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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