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Individual Calculations January 2010 |
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| Esserman, Marc R Total change: 13.90 | |   |
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| 40th Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2009-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2168 | 2408 | 4.00 | 6 | -0.71 | 10 | -7.10 | |
|  Ostrovskiy, Aleksandr | c | | 2147 | USA | 0.50 | 1 | -0.32 | 10 | -3.20 | |  Tuhrim, Richard J | | | 2044 | USA | 1.00 | 1 | 0.10 | 10 | 1.00 | | | Treger, Yefim | | | 2223 | USA | 0.00 | 1 | -0.74 | 10 | -7.40 | | | Schoch, Ian D | | | 2032 | USA | 1.00 | 1 | 0.09 | 10 | 0.90 | | | Minear, Peter | | | 2242 | USA | 1.00 | 1 | 0.28 | 10 | 2.80 | | | Yang, Darwin | f | | 2317 | USA | 0.50 | 1 | -0.12 | 10 | -1.20 | |
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 Edmonton International | Edmonton, Alberta | CAN | 2009-12-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2413 | 2408 | 6.50 | 9 | 2.10 | 10 | 21.00 | |
| | Antal, Gergely | m | | 2495 | HUN | 1.00 | 1 | 0.62 | 10 | 6.20 | | | Pechenkin, Vladimir | f | | 2372 | CAN | 1.00 | 1 | 0.45 | 10 | 4.50 | | | Porper, Edward | m | | 2445 | CAN | 0.50 | 1 | 0.05 | 10 | 0.50 | | | Hansen, Eric | f | | 2409 | CAN | 0.50 | 1 | 0.00 | 10 | 0.00 | | | Friedel, Josh | g | | 2551 | USA | 0.50 | 1 | 0.19 | 10 | 1.90 | | | Mackinnon, Keith | | | 2125 | CAN | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Kraai, Jesse | g | | 2510 | USA | 0.50 | 1 | 0.14 | 10 | 1.40 | | | Haessel, Dale | f | | 2201 | CAN | 1.00 | 1 | 0.23 | 10 | 2.30 | | | Mikhalevski, Victor | g | | 2607 | ISR | 0.50 | 1 | 0.26 | 10 | 2.60 | |
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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