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Individual Calculations January 2010 |
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| Treger, Yefim Total change: 30.15 | |   |
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| 27th Annual Sands Regency - Western States Open | Reno, Nevada | USA | 2009-10-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2323 | 2198 | 2.00 | 5 | 0.19 | 15 | 2.85 | |
|  Khachiyan, Melikset | g | | 2528 | USA | 0.50 | 1 | 0.38 | 15 | 5.70 | | | Kudrin, Sergey | g | | 2573 | USA | 0.00 | 1 | -0.09 | 15 | -1.35 | |  Troff, Kayden W | | | 2174 | USA | 0.50 | 1 | -0.03 | 15 | -0.45 | | | Collyer, Curt D | | | 2294 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Harmon-Vellotti, L | | | 2048 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | |
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) | | | | 2nd Annual "What-A-Turkey" Open | New York, New York | USA | 2009-11-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2458 | 2223 | 0.50 | 1 | 0.29 | 15 | 4.35 | |
| | Rohde, Michael A | g | | 2458 | USA | 0.50 | 1 | 0.29 | 15 | 4.35 | |
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 National Chess Congress | Philadelphia, Pennsylvania | USA | 2009-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2427 | 2223 | 2.50 | 4 | 1.53 | 15 | 22.95 | |
| | Fishbein, Alexander | g | | 2520 | USA | 0.50 | 1 | 0.35 | 15 | 5.25 | | | Esserman, Marc R | m | | 2408 | USA | 1.00 | 1 | 0.74 | 15 | 11.10 | | | Molner, Mackenzie | | | 2397 | USA | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Bartell, Thomas | f | | 2382 | USA | 0.50 | 1 | 0.21 | 15 | 3.15 | |
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) | | |
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