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Individual Calculations January 2018 |
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| Perera, P K Jagath Total change: 46.40 | |   |
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| 4th Sri Lanka National Senior Chess Championships 2017 | Colombo | SRI | 2017-11-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1255 | 1104 | 1.50 | 3 | 0.49 | 40 | 19.60 | |
|  Seneviratne, Malinda | | | 1504 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Samuel, Anthony J | | | 1086 | SRI | 0.50 | 1 | -0.03 | 40 | -1.20 | | | Shanmuganathan, S | | | 1176 | SRI | 1.00 | 1 | 0.60 | 40 | 24.00 | | | * 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) | | | | 3rd Kolonnawa International Rating Chess Championship 2017 | Colombo | SRI | 2017-12-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1401 | 1104 | 1.00 | 2 | 0.67 | 40 | 26.80 | |
| | Abhimanyu, Iraja | | | 1504 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Perera, D G D Y Adeekshana | | | 1297 | SRI | 1.00 | 1 | 0.75 | 40 | 30.00 | | | * 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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