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Individual Calculations July 2009 |
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| Mattson, Dane M Total change: 9.60 | |   |
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| 18th Annual Chicago Open - U2300 Section | Wheeling, Illinois | USA | 2009-05-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2184 | 2061 | 2.00 | 4 | 0.64 | 15 | 9.60 | |
|  Whaley, Davis M | | | 2257 | USA | 0.50 | 1 | 0.25 | 15 | 3.75 | |  Szpisjak, Steven J | | | 2213 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Shemyakin, Arkady | | | 2121 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Rea, Andrew B | | | 2144 | USA | 1.00 | 1 | 0.61 | 15 | 9.15 | |
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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