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Individual Calculations December 2017 |
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| Acosta, Mariano Total change: -39.60 | |   |
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| City of Chicago Class Championships | Chicago, Illinois | USA | 2017-10-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1958 | 1988 | 1.00 | 3 | -0.68 | 20 | -13.60 | |
|  Gurevich, Dmitry | g | | 2388 * | USA | 0.00 | 1 | -0.08 | 20 | -1.60 | |  Reddy, Shreyas | | | 1799 | USA | 0.50 | 1 | -0.25 | 20 | -5.00 | | | Carey, Aidan M | | | 1687 | USA | 0.50 | 1 | -0.35 | 20 | -7.00 | | | * 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) | | | | 53rd Annual American Open | Costa Mesa, California | USA | 2017-11-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2110 | 1956 | 0.00 | 4 | -1.30 | 20 | -26.00 | |
| | Peters, Jack | m | | 2346 | USA | 0.00 | 1 | -0.09 | 20 | -1.80 | | | Narayanan, Samrug | | | 1908 | USA | 0.00 | 1 | -0.57 | 20 | -11.40 | | | Kolay, Alex | | | 2045 | USA | 0.00 | 1 | -0.38 | 20 | -7.60 | | | Burrows, Brandon | | | 2142 | USA | 0.00 | 1 | -0.26 | 20 | -5.20 | |
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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