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Individual Calculations September 2019 |
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| Perera, N Dumitha Sandumith Total change: -32.80 | |   |
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| Sri Lanka open International Rating Chess Championship 2019 | Anuradhapura | SRI | 2019-08-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1316 | 1030 | 0.00 | 3 | -0.49 | 40 | -19.60 | |
|  Jayaweera, Hashan | | | 1373 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Perera, D G D Y Adeekshana | | | 1346 | SRI | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Punchihewa, Hasith Thevindu | | | 1228 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | |
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) | | | | 5th Negombo International chess Festival 2019 | Negombo | SRI | 2019-08-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1325 | 1030 | 0.00 | 2 | -0.33 | 40 | -13.20 | |
|  Wettasinha, Vasanta | | | 1430 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Gunasinghe, K D A N | | | 1220 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | * 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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