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Individual Calculations February 2019 |
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| Mallikarachchi, Kancha Total change: 6.00 | |   |
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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 |
| 1152 | 1008 | 2.00 | 6 | 0.15 | 40 | 6.00 | |
|  Samaranayaka, M L G | | | 1200 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Attanayaka, Chamath | | | 1168 | SRI | 0.00 | 1 | -0.29 | 40 | -11.60 | | | Edirisinghe, Shanuka Dulnath | | | 1110 | SRI | 0.50 | 1 | 0.14 | 40 | 5.60 | |  Nethsara, W W P Mandinu | | | 1120 | SRI | 1.00 | 1 | 0.65 | 40 | 26.00 | | | Mannaperuma, M M Pamudu Thamara | | | 1160 | SRI | 0.50 | 1 | 0.20 | 40 | 8.00 | | | Basnayake, Kaushal Chaturanga | | | 1154 | 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) | | |
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