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Individual Calculations August 2018 |
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| Perera, G S M Total change: -3.80 | |   |
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| 5th Sri Lanka National Amateur International Rating Chess Championships 2018 | Kurunegala | SRI | 2018-06-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1254 | 1253 | 2.50 | 6 | -0.51 | 20 | -10.20 | |
|  Tennakoon, Lisara Samadhith | | | 1360 | SRI | 0.50 | 1 | 0.15 | 20 | 3.00 | | | Weerasinghe, W Yasiru | | | 1004 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | |  Gunasekara, W A N Senpathi | | | 1520 | SRI | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Premathilaka, W P P G Sampath | | | 1012 | SRI | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Lakmal, M A C | | | 1524 | SRI | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Bandara, R M D T | | | 1101 | SRI | 0.00 | 1 | -0.70 | 20 | -14.00 | |
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) | | | | Inter University Chess Championship 2018 - Men | Colombo | SRI | 2018-07-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1506 | 1253 | 1.00 | 3 | 0.32 | 20 | 6.40 | |
| | Jayaweera, C L | | | 1653 * | SRI | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Gunasena, M Devin Chanuka | | | 1259 | SRI | 1.00 | 1 | 0.51 | 20 | 10.20 | | | Nirmalarajah, S | | | 1606 | SRI | 0.00 | 1 | -0.11 | 20 | -2.20 | | | * 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) | | |
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