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Individual Calculations February 2020 |
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| Wijesinghe, Ramika Risiwara Total change: 15.60 | |   |
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| Sri Lanka National Amateur Chess Championship 2019 | Colombo | SRI | 2019-12-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1364 | 1070 | 0.50 | 3 | -0.05 | 40 | -2.00 | |
|  Guruge, Nalaka Neranjan | | | 1470 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Methsara, E G Ruvindu | | | 1151 | SRI | 0.50 | 1 | 0.11 | 40 | 4.40 | | | Tennakoon, I L K | | | 1470 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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 Youth Chess Championship 2019 - Under 13 years | Colombo | SRI | 2019-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1339 | 1070 | 1.00 | 3 | 0.44 | 40 | 17.60 | |
| | Ekanayake, Hasindu Chiranga | | | 1419 | SRI | 0.50 | 1 | 0.39 | 40 | 15.60 | | | Gunarathne, Senila Amaneth | c | | 1398 | SRI | 0.50 | 1 | 0.37 | 40 | 14.80 | | | Thanuja, Dewsara | | | 1201 | SRI | 0.00 | 1 | -0.32 | 40 | -12.80 | |
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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