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Individual Calculations December 2017 |
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| Sigurdsson, Birkir Karl Total change: 3.40 | |   |
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| 2017 Norths John Purdy Memorial Open | Sydney | AUS | 2017-09-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1782 | 1901 | 4.00 | 6 | 0.17 | 20 | 3.40 | |
|  Singleton, Tim | | | 1516 | AUS | 1.00 | 1 | 0.09 | 20 | 1.80 | |  Jain, Anshika | | | 1676 | AUS | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Russell, Paul | c | | 1893 | AUS | 0.50 | 1 | -0.01 | 20 | -0.20 | | | Balan, Jigando | | | 1700 | IND | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Cooper, Nicholas | | | 1813 | AUS | 0.50 | 1 | -0.12 | 20 | -2.40 | | | Feldman, Vladimir | m | | 2095 | AUS | 0.00 | 1 | -0.25 | 20 | -5.00 | |
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) | | |
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