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Individual Calculations January 2009 |
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| Treger, Yefim Total change: -32.55 | |   |
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| 14th Annual Northeast Open | Stamford, Connecticut | USA | 2008-10-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2080 | 2218 | 1.00 | 3 | -1.06 | 15 | -15.90 | |
|  Aaron, Deepak | | | 2046 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | |  Prawira, Dennis | | | 2059 | USA | 0.00 | 1 | -0.71 | 15 | -10.65 | | | Pattard, Thomas | | | 2134 | GER | 0.00 | 1 | -0.62 | 15 | -9.30 | |
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) | | | | What-A-Turkey Open | New York, NY | USA | 2008-11-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2079 | 2218 | 2.00 | 4 | -0.72 | 15 | -10.80 | |
| | Frumkin, Edward A | | | 2031 | USA | 0.50 | 1 | -0.24 | 15 | -3.60 | | | Guevara, Robert N | | | 2080 | USA | 0.00 | 1 | -0.69 | 15 | -10.35 | | | Getz, Alec | f | | 2222 | USA | 0.50 | 1 | 0.01 | 15 | 0.15 | | | Kats, Alena | | | 1981 | USA | 1.00 | 1 | 0.20 | 15 | 3.00 | |
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 |
| 2230 | 2218 | 2.00 | 5 | -0.39 | 15 | -5.85 | |
| | Freix, Andrew J | | | 1953 | USA | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Ludwig, Daniel | | | 2400 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Foisor, Sabina-Francesca | | wg | 2316 | ROU | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Ellenbogen, Michael | | | 2151 | USA | 0.50 | 1 | -0.09 | 15 | -1.35 | | | Yeager, Daniel A | f | | 2328 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | |
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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