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Individual Calculations December 2017 |
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| Armstrong, Gary Total change: 26.40 | |   |
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| 2017 Norths John Purdy Memorial Open | Sydney | AUS | 2017-09-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1834 | 1574 | 2.50 | 6 | 1.32 | 20 | 26.40 | |
|  Feldman, Vladimir | m | | 1974 * | AUS | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Wan, Dennis | | | 1839 | AUS | 0.50 | 1 | 0.32 | 20 | 6.40 | |  Willathgamuwa, Rowan | c | | 1907 | AUS | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Sandalciyan, Aram | | | 1723 | AUS | 1.00 | 1 | 0.70 | 20 | 14.00 | | | Russell, Paul | c | | 1893 | AUS | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Low, Frank | | | 1670 | AUS | 1.00 | 1 | 0.63 | 20 | 12.60 | | | * 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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