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Individual Calculations February 2019 |
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| Perera, A Dinuka Kanchana Total change: -61.60 | |   |
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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 |
| 1209 | 1023 | 0.00 | 2 | -0.52 | 40 | -20.80 | |
|  Perera, Isara Ranmeth | | | 1229 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Rohana, V T Malitha | | | 1189 | SRI | 0.00 | 1 | -0.28 | 40 | -11.20 | |
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 |
| 1230 | 1023 | 0.00 | 4 | -1.02 | 40 | -40.80 | |
| | Alwala, A D Hansaja Ramith | | | 1423 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Nimsanda, K H Savitha | | | 1160 | SRI | 0.00 | 1 | -0.32 | 40 | -12.80 | | | Karunarathne, D D W Gamini | | | 1167 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Lavanga, D Binuka | | | 1168 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | | | * 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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