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Individual Calculations April 2020 |
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| Dutter, Fredric Total change: -23.20 | |   |
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| GM Koltanowski Marathon 2020 | Berkeley, California | USA | 2020-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1717 | 1770 | 2.00 | 3 | 0.27 | 40 | 10.80 | |
|  Sherwood, Peter | | | 1564 | USA | 1.00 | 1 | 0.24 | 40 | 9.60 | |  Shaughnessy, Elizabeth | | | 1420 | IRL | 1.00 | 1 | 0.11 | 40 | 4.40 | | | Poehlmann, Roger M | | | 2166 | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | |
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) | | | | Berkeley Senior Championship 2020 | Berkeley, California | USA | 2020-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1432 | 1734 | 0.00 | 1 | -0.85 | 40 | -34.00 | |
| | Soltani, Mohammad | | | 1432 | USA | 0.00 | 1 | -0.85 | 40 | -34.00 | |
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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