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Individual Calculations March 2011 |
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| Ostrovskiy, Aleksandr A Total change: 1.05 | |   |
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| 29th Annual Empire City Open | New York, New York | USA | 2010-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2191 | 2309 | 3.00 | 4 | 0.44 | 15 | 6.60 | |
|  Hua, David | | | 1989 | USA | 0.50 | 1 | -0.37 | 15 | -5.55 | |  Jaleel, Zaroug A | | | 2083 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Resika, Nathan A | f | | 2234 | USA | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Rohde, Michael A | g | | 2459 | USA | 0.50 | 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) | | | | 43rd Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2011-01-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2195 | 2294 | 3.00 | 6 | -0.81 | 15 | -12.15 | |
| | Thaler, Michael | | | 2257 | USA | 0.50 | 1 | -0.05 | 15 | -0.75 | | | Tuhrim, Richard J | | | 2123 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Aaron, Deepak | | | 2214 | USA | 0.00 | 1 | -0.61 | 15 | -9.15 | | | Bodek, Michael H | | | 2163 | USA | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Williams, Justus D | | | 2154 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Zenyuk, Iryna | c | wm | 2256 | USA | 0.00 | 1 | -0.55 | 15 | -8.25 | |
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) | | | | 2011 New York February Open | New York, New York | USA | 2011-02-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2183 | 2294 | 3.00 | 4 | 0.44 | 15 | 6.60 | |
| | Ray, Sarathi | | | 2070 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Black Jr, James A | | | 2089 | USA | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Sarkar, Justin | m | | 2418 | USA | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Williams, Justus D | | | 2154 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | |
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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