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Individual Calculations April 2009 |
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| Haring, Ruth I Total change: -39.30 | |   |
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| 18th Annual North American Open | Las vegas, Nevada | USA | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2167 | 2091 | 0.00 | 4 | -1.60 | 15 | -24.00 | |
|  Steinfl, Alessandr | | | 2242 | ITA | 0.00 | 1 | -0.30 | 15 | -4.50 | |  Larson, Gerald A | | | 2135 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Wall, Brian D | | | 2220 | USA | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Yee, Michael A | | | 2069 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2103 | 2049 | 0.50 | 2 | -0.35 | 15 | -5.25 | |
| | Wang, Eigen | | | 2166 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Pugh, Lawrence B | | | 2039 | USA | 0.00 | 1 | -0.51 | 15 | -7.65 | |
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) | | | | Western Chess Congress | Concord, California | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2175 | 2049 | 0.00 | 2 | -0.67 | 15 | -10.05 | |
| | Yanayt, Eugene | f | | 2225 | USA | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Ding, Richard | | | 2124 | USA | 0.00 | 1 | -0.40 | 15 | -6.00 | |
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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