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Individual Calculations April 2008 |
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| Lau, Robert Total change: 17.25 | |   |
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| North America Youth Chess Championship Boys Under 16 | Aguascalientes, Ags | MEX | 2007-10-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2017 | 2134 | 2.00 | 2 | 0.70 | 15 | 10.50 | |
|  Medina Garcia, Manuel Alva | | | 1931 | MEX | 1.00 | 1 | 0.24 | 15 | 3.60 | |  Aguirre Manzo, Leopoldo An | | | 2102 | MEX | 1.00 | 1 | 0.46 | 15 | 6.90 | |
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) | | | | 17th Annual North American Open | Las Vegas, NV | USA | 2007-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2191 | 2134 | 3.00 | 6 | 0.45 | 15 | 6.75 | |
| | Kleiman, Jake | f | | 2347 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Lee, Michael | | | 2243 | USA | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Anderson, Renard | f | | 2246 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Hanken, Jerome | | | 1944 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Brownscombe, Tom | f | | 2180 | USA | 0.50 | 1 | 0.06 | 15 | 0.90 | | | Williams, Christopher | | | 2187 | USA | 1.00 | 1 | 0.57 | 15 | 8.55 | |
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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