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Individual Calculations March 2012 |
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| Bonin, Jay Total change: 1.90 | |   |
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| 30th Annual Empire City Open | New York, New York | USA | 2011-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2184 | 2314 | 3.50 | 5 | 0.12 | 10 | 1.20 | |
|  Williams, Alan P | | | 2212 | USA | 0.50 | 1 | -0.14 | 10 | -1.40 | |  Tuhrim, Richard J | | | 2234 | USA | 0.50 | 1 | -0.11 | 10 | -1.10 | | | Chernin, Oliver | | | 2165 | USA | 1.00 | 1 | 0.30 | 10 | 3.00 | | | Rozman, Levy | | | 2133 | USA | 0.50 | 1 | -0.24 | 10 | -2.40 | | | Prilleltensky, Matan | | | 2175 | USA | 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) | | | | 2012 Marshall January Grand Prix | New York, New York | USA | 2012-01-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2293 | 2311 | 1.00 | 2 | -0.04 | 10 | -0.40 | |
| | Berg, George P | | | 2052 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Kudrin, Sergey | g | | 2533 | USA | 0.00 | 1 | -0.22 | 10 | -2.20 | |
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) | | | | Marshall Chess Club Jan/Feb FIDE Monday | New York, New York | USA | 2012-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2099 | 2311 | 2.50 | 3 | 0.22 | 10 | 2.20 | |
| | Frumkin, Edward A | | | 1976 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Sena, Juan | | | 2127 | DOM | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Treger, Yefim | | | 2194 | USA | 0.50 | 1 | -0.16 | 10 | -1.60 | |
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) | | | | 2012 Marshall February Grand Prix | New York, New York | USA | 2012-02-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2245 | 2311 | 1.00 | 2 | -0.11 | 10 | -1.10 | |
| | Margiotta, Jason J | | | 1956 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Kudrin, Sergey | g | | 2533 | USA | 0.00 | 1 | -0.22 | 10 | -2.20 | |
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) | | |
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