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Individual Calculations April 2020 |
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| Walder, Michael Total change: 9.20 | |   |
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| GM Koltanowski Marathon 2020 | Berkeley, California | USA | 2020-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1872 | 1972 | 2.00 | 3 | 0.15 | 20 | 3.00 | |
|  Adkins, Rico | | | 1673 | USA | 1.00 | 1 | 0.15 | 20 | 3.00 | |  Henline, Anthony | | | 1572 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Jirasek, Ladia | m | | 2372 * | USA | 0.00 | 1 | -0.08 | 20 | -1.60 | | | * 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) | | | | Ted and Ruby Yudacufski Memorial Tuesday Night Marathon 2020 | San Francisco, California | USA | 2020-03-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1782 | 1933 | 1.00 | 1 | 0.30 | 20 | 6.00 | |
| | Melville, Cailen Jeremiah | | | 1782 | USA | 1.00 | 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) | | | | Berkeley Senior Championship 2020 | Berkeley, California | USA | 2020-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1839 | 1933 | 3.00 | 5 | 0.01 | 20 | 0.20 | |
| | Trestor, David J | | | 1612 | USA | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Taylor, Timothy W | m | | 2219 | USA | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Ho, Michael | | | 1676 | USA | 0.50 | 1 | -0.32 | 20 | -6.40 | | | Soltani, Mohammad | | | 1533 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Poehlmann, Roger M | | | 2153 | USA | 0.50 | 1 | 0.28 | 20 | 5.60 | | | * 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) | | |
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