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Individual Calculations September 2017 |
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| Cohen, Lawrence S Total change: -11.80 | |   |
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| Chicago Cup | Chicago, Illinois | USA | 2017-08-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1872 | 1891 | 1.50 | 4 | -0.59 | 20 | -11.80 | |
|  Posthuma, Joshua Gerald | | | 2197 | USA | 0.00 | 1 | -0.14 | 20 | -2.80 | |  Ladan, Nicholas John | | | 1587 | USA | 1.00 | 1 | 0.14 | 20 | 2.80 | | | Bronfeyn, Daniel | | | 2023 | USA | 0.00 | 1 | -0.32 | 20 | -6.40 | | | Venkat, Abhyudhaya | | | 1679 | USA | 0.50 | 1 | -0.27 | 20 | -5.40 | |
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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