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Individual Calculations December 2017 |
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| Charles, Gareth Total change: -20.20 | |   |
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| 2017 Norths John Purdy Memorial Open | Sydney | AUS | 2017-09-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1846 | 2085 | 6.00 | 9 | -1.01 | 20 | -20.20 | |
|  Pepping, John M | | | 1685 * | AUS | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Vowles, Justin | | | 1733 | AUS | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Siva Sankaran, Anup Kumar | | | 1828 | IND | 0.00 | 1 | -0.82 | 20 | -16.40 | | | Jain, Kamal | | | 1685 * | AUS | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Sirkka, Pertti T | | | 1865 | AUS | 0.50 | 1 | -0.28 | 20 | -5.60 | | | Wan, Dennis | | | 1839 | AUS | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Mallari, Donato | f | | 1987 | AUS | 1.00 | 1 | 0.37 | 20 | 7.40 | | | Feldman, Vladimir | m | | 2095 | AUS | 0.00 | 1 | -0.49 | 20 | -9.80 | | | Russell, Paul | c | | 1893 | AUS | 0.50 | 1 | -0.25 | 20 | -5.00 | | | * 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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