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Individual Calculations July 2009 |
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| Treger, Yefim Total change: 8.55 | |   |
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| Marshall CC FIDE Thursday | New York, NY | USA | 2009-02-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2025 | 2185 | 3.00 | 3 | 0.86 | 15 | 12.90 | |
|  Frumkin, Edward A | | | 2043 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | |  Santanna, Paulo | | | 2029 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Farber, Nelson M | | | 2003 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | |
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) | | | | New York March Open | New York, New York | USA | 2009-03-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2237 | 2185 | 0.00 | 1 | -0.43 | 15 | -6.45 | |
| | Zenyuk, Iryna | c | wm | 2237 | USA | 0.00 | 1 | -0.43 | 15 | -6.45 | |
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) | | | | Marshall CC FIDE Thursdays | New York, NY | USA | 2009-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2074 | 2185 | 3.50 | 4 | 0.90 | 15 | 13.50 | |
| | Waxman, Marian | | | 2036 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Kathstede, Gerd | | | 2142 | GER | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Frumkin, Edward A | | | 2034 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Berg, George P | | | 2085 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | |
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) | | | | 2009 New York May Open | New York, New York | USA | 2009-05-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2129 | 2185 | 1.50 | 4 | -0.76 | 15 | -11.40 | |
| | Harding, Andre E | | | 1970 | USA | 0.00 | 1 | -0.77 | 15 | -11.55 | | | Paciulli, Frank R | | | 1950 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Salakhutdinov, Ildar | | | 2291 | RUS | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Ravichandran, Siddharth | | | 2303 | IND | 0.00 | 1 | -0.34 | 15 | -5.10 | |
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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