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Individual Calculations January 2011 |
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| Pressman, Leif A Total change: 27.45 | |   |
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| 2010 Marshall Chess Club Championship | New York, New York | USA | 2010-10-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2376 | 2116 | 2.50 | 6 | 1.29 | 15 | 19.35 | |
|  Chernin, Oliver | | | 2138 | USA | 0.50 | 1 | 0.03 | 15 | 0.45 | |  Sarkar, Justin | m | | 2389 | USA | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Bonin, Jay R | m | | 2317 | USA | 1.00 | 1 | 0.76 | 15 | 11.40 | | | Esserman, Marc R | m | | 2400 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Lenderman, Aleksander | g | | 2516 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Paragua, Mark C | g | | 2496 | PHI | 0.50 | 1 | 0.41 | 15 | 6.15 | | | * 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 Marshall November Grand Prix | New York, New York | USA | 2010-11-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2023 | 2140 | 1.00 | 1 | 0.34 | 15 | 5.10 | |
| | Black Jr, James A | | | 2023 | 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) | | | | 41st Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2010-11-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2184 | 2140 | 2.00 | 4 | 0.20 | 15 | 3.00 | |
| | Gershenov, Ben | | | 2044 | USA | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Xin, Samuel L | | | 2065 | USA | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Esserman, Marc R | m | | 2416 | USA | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Markzon, Gregory | f | | 2211 | USA | 0.00 | 1 | -0.40 | 15 | -6.00 | |
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) | | |
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