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Individual Calculations October 2008 |
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| Petursson, Matthias Total change: 18.30 | |   |
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| Helgarskakmot Hellis og TR | Reykjavik | ISL | 2008-07-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2009 | 1878 | 1.50 | 2 | 0.84 | 15 | 12.60 | |
|  Brynjarsson, Helgi | | | 1920 | ISL | 1.00 | 1 | 0.56 | 15 | 8.40 | |  Bergsson, Stefan | | | 2097 | ISL | 0.50 | 1 | 0.28 | 15 | 4.20 | |
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) | | | | NM for Gymnasielag 2008 | Reykjavik | ISL | 2008-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1973 | 1878 | 1.50 | 3 | 0.38 | 15 | 5.70 | |
| | Oskarsson, Aron Ingi | | | 1888 | ISL | 1.00 | 1 | 0.51 | 15 | 7.65 | | | Pettersson, Anders | | | 2029 | SWE | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Gandrud, Vegar Koi | | | 2002 | NOR | 0.50 | 1 | 0.17 | 15 | 2.55 | |
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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