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Individual Calculations February 2019 |
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| Randunu, S S M T Total change: -35.60 | |   |
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| Sri Lanka National Youth Chess Championship 2018 Under - 13 years | Colombo | SRI | 2018-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1260 | 1077 | 0.00 | 3 | -0.80 | 40 | -32.00 | |
|  Wiratunga, Jenith | | | 1349 | ENG | 0.00 | 1 | -0.17 | 40 | -6.80 | | | De Silva, H Adeepa Virajitha | | | 1201 | SRI | 0.00 | 1 | -0.33 | 40 | -13.20 | |  Perera, Isara Ranmeth | | | 1229 | SRI | 0.00 | 1 | -0.30 | 40 | -12.00 | |
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) | | | | 7th Kaluthara Chess Festival 2019 | Kaluthara | SRI | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1341 | 1077 | 0.50 | 3 | -0.09 | 40 | -3.60 | |
| | Lakmal, M A C | | | 1477 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Sahasra, A P Sasindu | | | 1361 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Weerawardana, Oneli Vihanga | | | 1186 | SRI | 0.50 | 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) | | |
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