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Individual Calculations April 2008 |
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| Samuelson, Andrew Total change: -37.80 | |   |
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| 2007 Arlington Chess Club Championship | Arlington, Virginia | USA | 2007-12-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2380 | 2196 | 0.00 | 1 | -0.26 | 15 | -3.90 | |
|  Kaufman, Lawrence | m | | 2380 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | |
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) | | | | 34th Annual Eastern Open | Washington DC | USA | 2007-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2127 | 2196 | 0.00 | 3 | -1.77 | 15 | -26.55 | |
| | Guo, Gill Y | | | 2090 | USA | 0.00 | 1 | -0.64 | 15 | -9.60 | | | Bryant, Todd C | | | 2027 | USA | 0.00 | 1 | -0.72 | 15 | -10.80 | |  Malkiel, Daniel E | | | 2263 | USA | 0.00 | 1 | -0.41 | 15 | -6.15 | |
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) | | | | 40th Annual Virginia Open | Springfield, Virginia | USA | 2008-01-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2050 | 2170 | 1.50 | 3 | -0.49 | 15 | -7.35 | |
| | Guo, Gill Y | | | 2081 | USA | 0.00 | 1 | -0.62 | 15 | -9.30 | | | Janchivnyambuu, Enkhb | | | 2005 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | McKinney, Jason E | | | 2063 | USA | 0.50 | 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) | | |
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