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Individual Calculations July 2011 |
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| Treger, Yefim Total change: 23.85 | |   |
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| 2011 Marshall Chess Club FIDE Mondays | New York, New York | USA | 2011-04-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2141 | 2163 | 3.50 | 6 | 0.33 | 15 | 4.95 | |
|  Frumkin, Edward A | | | 1992 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Hoffmann, Asa | f | | 2290 | USA | 0.50 | 1 | 0.17 | 15 | 2.55 | |  Bonin, Jay | m | | 2296 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Kopiecki, Edward P | | | 2023 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Resika, Nathan | f | | 2204 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Layevskiy, Michael | | | 2042 | USA | 1.00 | 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) | | | | 2011Marshall CC Maypril Grand Prix | New York, New York | USA | 2011-04-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 2163 | 2.50 | 3 | 0.24 | 15 | 3.60 | |
| | Frumkin, Edward A | | | 1992 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Moon, Kyle | | | 2011 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Leotaud, Glenn C | | | 1889 | USA | 1.00 | 1 | 0.17 | 15 | 2.55 | |
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) | | | | 2011 Marshall May Grand Prix | New York, New York | USA | 2011-05-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2252 | 2181 | 0.00 | 2 | -0.80 | 15 | -12.00 | |
| | Pressman, Leif A | | | 2230 | USA | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Salakhutdinov, Ild | | | 2274 | RUS | 0.00 | 1 | -0.37 | 15 | -5.55 | |
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) | | | | The New Yorker Open - U2400 Section | New York, New York | USA | 2011-05-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2169 | 2181 | 5.00 | 6 | 1.91 | 15 | 28.65 | |
| | Itkis, Hana | | wf | 2044 | USA | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Mateer, Amanda | | wf | 2114 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Williams, Justus D | | | 2167 | USA | 1.00 | 1 | 0.48 | 15 | 7.20 | | | Reverby, Miro | | | 2143 | USA | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Barnet, Alex | | | 2269 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Salakhutdinov, Ildar | | | 2274 | RUS | 0.50 | 1 | 0.13 | 15 | 1.95 | |
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 New York International | New York, New York | USA | 2011-06-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2114 | 2181 | 0.50 | 1 | -0.09 | 15 | -1.35 | |
| | Mateer, Amanda | | wf | 2114 | USA | 0.50 | 1 | -0.09 | 15 | -1.35 | |
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) | | |
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