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Individual Calculations April 2009 |
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| Grinberg, Matthew Total change: -10.05 | |   |
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| 2009 Kingstowne Chess Festival | Alexandria, Virginia | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1794 | 2094 | 1.00 | 1 | 0.15 | 15 | 2.25 | |
|  Lam, Fiona V | | | 1794 | USA | 1.00 | 1 | 0.15 | 15 | 2.25 | |
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) | | | | 41st Annual Virginia Open | McLean, Virginia | USA | 2009-02-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1960 | 2094 | 0.50 | 2 | -0.82 | 15 | -12.30 | |
|  Wu, Katherine | | | 1814 | USA | 0.00 | 1 | -0.84 | 15 | -12.60 | | | Guo, Gill Y | | | 2106 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | |
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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