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Individual Calculations April 2009 |
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| Gallegos, Paul A Total change: -9.60 | |   |
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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 |
| 2091 | 2097 | 0.50 | 1 | -0.01 | 15 | -0.15 | |
|  Nita Iii, Marian M | | | 2091 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | |
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) | | | | Western Chess Congress | Concord, California | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2251 | 2097 | 0.00 | 2 | -0.63 | 15 | -9.45 | |
| | Zilberstein, Dmitry | m | | 2393 | USA | 0.00 | 1 | -0.15 | 15 | -2.25 | |  Huang, Gary M | | | 2109 | USA | 0.00 | 1 | -0.48 | 15 | -7.20 | |
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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