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Individual Calculations December 2017 |
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| Birkisson, Bjorn Holm Total change: 81.60 | |   |
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| Gardabaer Championship 2017 | Gardabaer | ISL | 2017-10-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1987 | 2023 | 4.00 | 6 | 0.80 | 40 | 32.00 | |
|  Sigurvaldason, Hjalmar | | | 1623 * | ISL | 1.00 | 1 | 0.08 | 40 | 3.20 | |  Stefansson, Vignir Vatnar | f | | 2300 | ISL | 0.50 | 1 | 0.33 | 40 | 13.20 | | | Birkisson, Bardur Orn | | | 2164 | ISL | 0.50 | 1 | 0.19 | 40 | 7.60 | | | Ragnarsson, Johann | | | 2051 | ISL | 0.50 | 1 | 0.04 | 40 | 1.60 | | | Andrason, Pall | | | 1805 | ISL | 0.50 | 1 | -0.28 | 40 | -11.20 | | | Sigurdsson, Pall | | | 1978 | ISL | 1.00 | 1 | 0.44 | 40 | 17.60 | | | * 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) | | | | Reykjavik Northern Lights Open 2017 | Reykjavik | ISL | 2017-11-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2301 | 2002 | 2.50 | 8 | 1.24 | 40 | 49.60 | |
| | Thorfinnsson, Bjorn | m | | 2395 | ISL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Ptacnikova, Lenka | | wg | 2232 | ISL | 0.50 | 1 | 0.29 | 40 | 11.60 | | | Heimisson, Hilmir Freyr | c | | 2190 | ISL | 0.50 | 1 | 0.24 | 40 | 9.60 | | | Gislason, Gudmundur | f | | 2318 | ISL | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Kumar, Nikhil | f | | 2274 | USA | 1.00 | 1 | 0.83 | 40 | 33.20 | | | Gretarsson, Hjorvar Steinn | g | | 2402 * | ISL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Birkisson, Bardur Orn | c | | 2198 | ISL | 0.50 | 1 | 0.25 | 40 | 10.00 | | | Thorfinnsson, Bragi | m | | 2402 * | ISL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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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