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Individual Calculations February 2013 |
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| Chow, Colin Total change: 23.55 | |   |
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| 22nd Annual North American Open - U2300 Section | Las Vegas, Nevada | USA | 2012-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2033 | 2062 | 4.00 | 5 | 1.31 | 15 | 19.65 | |
|  Lee, Megan | | | 2098 | USA | 0.50 | 1 | 0.05 | 15 | 0.75 | |  Iyengar, Udit | | | 1988 | USA | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Itkis, Hana | | wf | 2038 | USA | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Nunez Hirales, Juan Alejandro | | | 2085 | MEX | 0.50 | 1 | 0.03 | 15 | 0.45 | | | Iyer, Venkat | | | 1957 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | |
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) | | | | 4th Annual Golden State Open | Concord, California | USA | 2013-01-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2150 | 2062 | 3.00 | 7 | 0.26 | 15 | 3.90 | |
| | Tang, Andrew | | | 2156 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Hatarik, Robert | | | 2154 | GER | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Shipman, Walter J | m | | 2144 | USA | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Gerzhoy, Leonid | m | | 2462 * | CAN | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Manvelyan, Hayk | | | 2232 | USA | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Ghatti, Sanjay | | | 1767 | USA | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Coraretti, Benjamin | | | 2138 | USA | 0.00 | 1 | -0.40 | 15 | -6.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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