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Individual Calculations October 2015 |
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| Vest, David M Total change: -15.80 | |   |
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| American Chess Promotions Open | Chamblee, Georgia | USA | 2015-09-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2058 | 2184 | 2.50 | 5 | -0.79 | 20 | -15.80 | |
|  Brookshear, Timothy | | | 1972 | USA | 0.50 | 1 | -0.27 | 20 | -5.40 | |  Scott, Joseph J | | | 2074 | USA | 0.50 | 1 | -0.15 | 20 | -3.00 | | | White, Lawrence Al | | | 1904 | USA | 0.50 | 1 | -0.34 | 20 | -6.80 | | | Leite, George S | | | 2079 | USA | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Corallo, Michael P | | | 2263 | USA | 0.00 | 1 | -0.39 | 20 | -7.80 | |
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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