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Individual Calculations March 2010 |
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| Margiotta, Jason J Total change: 35.25 | |   |
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| Edward Lasker Memorial and 93rd Annual Marshall Chess Club Championship | New York, New York | USA | 2009-12-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2164 | 1992 | 2.50 | 6 | 0.74 | 25 | 18.50 | |
|  Treger, Yefim | | | 2223 | USA | 1.00 | 1 | 0.79 | 25 | 19.75 | |  Rohde, Michael A | g | | 2392 * | USA | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Ostrovskiy, Aleksandr | c | | 2147 | USA | 0.00 | 1 | -0.29 | 25 | -7.25 | | | West, James R | | | 2159 | USA | 0.50 | 1 | 0.22 | 25 | 5.50 | | | Berg, George P | | | 2045 | USA | 0.00 | 1 | -0.43 | 25 | -10.75 | | | Frumkin, Edward A | | | 2017 | USA | 1.00 | 1 | 0.53 | 25 | 13.25 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | 2010 Happy New Year Open | New york, New York | USA | 2010-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2144 | 1976 | 1.50 | 3 | 0.67 | 25 | 16.75 | |
| | West, James R | | | 2157 | USA | 1.00 | 1 | 0.74 | 25 | 18.50 | | | Sturt, Raven M | | | 2100 | USA | 0.00 | 1 | -0.33 | 25 | -8.25 | | | Katz, Alexander R | | | 2175 | USA | 0.50 | 1 | 0.26 | 25 | 6.50 | |
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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