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Individual Calculations January 2012 |
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| Bonin, Jay Total change: -3.10 | |   |
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| 2011 Queens Chess Club Championship | Jamaica, New York | USA | 2011-10-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2057 | 2325 | 4.00 | 5 | -0.09 | 10 | -0.90 | |
|  Muwwakkil, Mulazim | | | 1956 | USA | 1.00 | 1 | 0.10 | 10 | 1.00 | |  Kopiecki, Edward P | | | 2015 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Ryba, Nicholas | | | 2102 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Ryba, Andrew | | | 2149 | USA | 0.00 | 1 | -0.73 | 10 | -7.30 | | | Arluck, William S | | | 2063 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | |
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 Chess Club Championship | New York, New York | USA | 2011-10-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2200 | 2325 | 4.50 | 8 | -0.80 | 10 | -8.00 | |
| | Black Jr, James A | | | 2132 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | | | Resika, Nathan | f | | 2130 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | | | Reverby, Miro | | | 2153 | USA | 0.50 | 1 | -0.23 | 10 | -2.30 | | | Pressman, Leif A | f | | 2284 | USA | 0.50 | 1 | -0.06 | 10 | -0.60 | | | Chernin, Oliver | | | 2165 | USA | 1.00 | 1 | 0.29 | 10 | 2.90 | | | Treger, Yefim | | | 2191 | USA | 0.50 | 1 | -0.18 | 10 | -1.80 | | | Kekelidze, Mikheil | g | | 2459 | GEO | 0.50 | 1 | 0.18 | 10 | 1.80 | | | Rozman, Levy | | | 2089 | USA | 0.50 | 1 | -0.30 | 10 | -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) | | | | 2011 Marshall November Grand Prix | New York, New York | USA | 2011-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2115 | 2314 | 3.50 | 4 | 0.50 | 10 | 5.00 | |
| | Berg, George P | | | 2035 | USA | 0.50 | 1 | -0.34 | 10 | -3.40 | | | Rosenberg, Evan S | | | 2176 | USA | 1.00 | 1 | 0.31 | 10 | 3.10 | | | Treger, Yefim | | | 2202 | USA | 1.00 | 1 | 0.35 | 10 | 3.50 | | | Colas, Joshua | | | 2047 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | |
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) | | | | 42nd Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2011-11-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2262 | 2314 | 3.50 | 6 | 0.08 | 10 | 0.80 | |
| | Smarty, Sylvester | | | 2078 | USA | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Mikhalevski, Victor | g | | 2549 | ISR | 0.00 | 1 | -0.21 | 10 | -2.10 | | | Daly, Troy | | | 2121 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | | | Fleischman, Eric J | | | 2145 | USA | 1.00 | 1 | 0.28 | 10 | 2.80 | | | Hua, David | | | 2137 | USA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Kudrin, Sergey | g | | 2540 | USA | 0.00 | 1 | -0.21 | 10 | -2.10 | |
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) | | | | 2011 Marshall December Grand Prix | New York, New York | USA | 2011-12-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2314 | 2314 | 1.00 | 2 | 0.00 | 10 | 0.00 | |
| | West, James R | | | 2087 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Kudrin, Sergey | g | | 2540 | USA | 0.00 | 1 | -0.21 | 10 | -2.10 | |
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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