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Individual Calculations September 2021 |
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| Halldorsson, Jon Arni Total change: -11.80 | |   |
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| Islandsmotid i skak - askorendaflokkur 2021 | Reykjavik | ISL | 2021-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1852 | 2115 | 1.00 | 2 | -0.59 | 20 | -11.80 | |
|  Kristjansson, Halldor | | | 1715 * | ISL | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Petursson, Gudni | | | 1988 | ISL | 0.00 | 1 | -0.67 | 20 | -13.40 | | | * 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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