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Individual Calculations October 2015 |
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| Butros, Ryan Tayla Total change: -7.20 | |   |
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| American Chess Promotions Open | Chamblee, Georgia | USA | 2015-09-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2072 | 2132 | 2.00 | 4 | -0.36 | 20 | -7.20 | |
|  Zapata, Alonso | g | | 2445 | COL | 0.00 | 1 | -0.14 | 20 | -2.80 | |  Brookshear, Timothy | | | 1972 | USA | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Oen, Grant | | | 1968 | USA | 0.00 | 1 | -0.72 | 20 | -14.40 | | | Potula, Kapish | | | 1904 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | |
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) | | |
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