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Individual Calculations February 2013 |
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| Colas, Joshua Total change: -3.30 | |   |
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| 22nd Annual North American Open - Open Section | Las Vegas, Nevada | USA | 2012-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2320 | 2204 | 2.50 | 7 | 0.04 | 15 | 0.60 | |
|  Krush, Irina | m | wg | 2459 | USA | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Troff, Kayden W | f | | 2365 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | |  Kavutskiy, Konstantin | f | | 2299 | USA | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Liou, Yian | f | | 2352 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Ardaman, Miles F | f | | 2282 | USA | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Cernousek, Lukas | m | | 2450 | CZE | 0.00 | 1 | -0.19 | 15 | -2.85 | | | He, Tommy O | f | | 2030 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | |
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) | | | | 2013 Boston Chess Congress - Major Section | Boston, Massachusetts | USA | 2013-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1990 | 2204 | 2.00 | 3 | -0.26 | 15 | -3.90 | |
| | Liu, Andrew | | | 2163 | USA | 0.50 | 1 | -0.06 | 15 | -0.90 | | | Arun, Siddharth | | | 1916 | USA | 0.50 | 1 | -0.34 | 15 | -5.10 | | | Christiansen, Natasha C | | wc | 1892 | USA | 1.00 | 1 | 0.14 | 15 | 2.10 | |
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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