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Individual Calculations January 2016 |
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| Prus, Irving B Total change: -6.80 | |   |
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| Oct - Dec 2015 Marshall Thursday Open | New York, New York | USA | 2015-10-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1889 | 1813 | 1.50 | 4 | -0.09 | 20 | -1.80 | |
|  Greco, Anthony | | | 1918 | USA | 0.50 | 1 | 0.14 | 20 | 2.80 | |  Beatty, Robert D | | | 1833 | USA | 0.00 | 1 | -0.47 | 20 | -9.40 | | | Levcovitz, Ivan | | | 1832 | USA | 1.00 | 1 | 0.53 | 20 | 10.60 | | | Gerstl, Mark E | | | 1971 | USA | 0.00 | 1 | -0.29 | 20 | -5.80 | |
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) | | | | 2015 Marshall Amateur Championship - Jerry Simon Memorial | New York, New York | USA | 2015-12-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1880 | 1813 | 1.00 | 3 | -0.25 | 20 | -5.00 | |
| | Tia, Rudy Jr. | | | 1982 | PNG | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Walton, John | | | 1657 | USA | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Zats, Yefrem | | | 2001 | USA | 0.00 | 1 | -0.26 | 20 | -5.20 | |
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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