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Individual Calculations April 2023 |
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| Ptacnikova, Lenka Total change: 12.00 | |   |
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| Skakmot odlinga 2023 Round 3-7 | Reykjavik | ISL | 2023-03-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1890 | 2040 | 4.50 | 5 | 1.23 | 20 | 24.60 | |
|  Bjarkason, Brynjar | | | 1640 * | ISL | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Rognvaldsson, Geir | | | 1631 | ISL | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Jonsson, Pall G | | | 1816 | ISL | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Kjartansson, David | m | | 2295 | ISL | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Halldorsson, Bragi | | | 2067 | ISL | 1.00 | 1 | 0.54 | 20 | 10.80 | | | * 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) | | | | Icelandic Team Championship 2022-23 - 1st div. Round 5-7 | Reykjavik | ISL | 2023-03-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 2040 | 0.50 | 2 | -0.63 | 20 | -12.60 | |
| | Eidsson, Johann Oli | | | 1766 | ISL | 0.50 | 1 | -0.33 | 20 | -6.60 | | | Bergsson, Stefan | | | 2192 | ISL | 0.00 | 1 | -0.30 | 20 | -6.00 | |
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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