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Individual Calculations September 2015 |
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| Perera, U I Himal Total change: -6.80 | |   |
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| National Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1654 | 1320 | 0.00 | 2 | -0.25 | 40 | -10.00 | |
|  Gunasinghe, W A T S | | | 1720 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Senavin, Dunura | | | 1588 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | * 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) | | | | Sri Lanka Open Chess Championship 2015 | Colombo | SRI | 2015-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1393 | 1320 | 3.00 | 7 | 0.08 | 40 | 3.20 | |
| | Siriwardena, G T D | | | 1534 | SRI | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Srilal, D A D T | | | 1122 | SRI | 1.00 | 1 | 0.24 | 40 | 9.60 | | | Jayaweera, Y | | | 1573 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Jayaweera Gamage, Disindu Hansad | | | 1146 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Tourkine, N | | | 1601 | FRA | 0.50 | 1 | 0.34 | 40 | 13.60 | | | Gamage, Nethmi Nirasha | | | 1602 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Punchihewa, Geeneth Devmika | | | 1175 | SRI | 0.50 | 1 | -0.19 | 40 | -7.60 | |
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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