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Individual Calculations January 2009 |
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| Ivanov, Alexander Total change: -6.40 | |   |
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| 26th Annual Sands Regency Reno - Western States Open | Reno, Nevada | USA | 2008-10-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2311 | 2547 | 4.00 | 6 | -0.72 | 10 | -7.20 | |
|  Karklins, Andrew | f | | 2238 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | |  Rensch, Daniel M | f | | 2354 | USA | 0.00 | 1 | -0.75 | 10 | -7.50 | | | Smith, Bryan G | m | | 2406 | USA | 1.00 | 1 | 0.31 | 10 | 3.10 | | | Small, Gregg H | | | 2240 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Bryant, John Daniel | | | 2223 | USA | 0.00 | 1 | -0.87 | 10 | -8.70 | | | Mezentsev, Vladimir | m | | 2405 | RUS | 1.00 | 1 | 0.31 | 10 | 3.10 | |
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) | | | | 2008 Pan American - Continental Championships | Boca Raton, Florida | USA | 2008-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2462 | 2547 | 6.50 | 9 | 1.04 | 10 | 10.40 | |
| | Bick, John D | f | | 2245 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | | | Terry, Renato | f | | 2349 | PER | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Robson, Ray S | m | | 2466 | USA | 1.00 | 1 | 0.39 | 10 | 3.90 | | | Lima, Darcy | g | | 2488 | BRA | 0.50 | 1 | -0.08 | 10 | -0.80 | | | Hoyos, Manuel Leon | g | | 2535 | MEX | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Becerra, Julio J | g | | 2602 | USA | 0.50 | 1 | 0.08 | 10 | 0.80 | | | Ehlvest, Jaan | g | | 2581 | USA | 0.00 | 1 | -0.45 | 10 | -4.50 | | | Garcia, Gildardo J | g | | 2410 | COL | 1.00 | 1 | 0.32 | 10 | 3.20 | | | Escobar, Alder | m | | 2482 | COL | 1.00 | 1 | 0.41 | 10 | 4.10 | |
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) | | | | Southern New Hampshire Open | Manchester, New Hampshire | USA | 2008-11-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2310 | 2547 | 2.50 | 3 | 0.20 | 10 | 2.00 | |
| | Terrie, Henry L | | | 2197 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Perelshteyn, Eugene | g | | 2536 | USA | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Sciacca, Patrick R | | | 2197 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |
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) | | | | 39th Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2008-11-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2311 | 2547 | 2.00 | 4 | -1.16 | 10 | -11.60 | |
| | Markzon, Gregory | f | | 2197 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Yeager, Daniel A | f | | 2328 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Ludwig, Daniel | | | 2400 | USA | 0.00 | 1 | -0.70 | 10 | -7.00 | | | Kaufman, Raymond | m | | 2320 | USA | 0.00 | 1 | -0.79 | 10 | -7.90 | |
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) | | |
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