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Individual Calculations September 2011 |
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| Vitkauskas, Vytaut Total change: 5.70 | |   |
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| 2011 FIDE Continental America's Amateur Chess Championship | Rosemont, Illinois | USA | 2011-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1944 | 1693 | 1.50 | 4 | 0.57 | 30 | 17.10 | |
|  Szpisjak, Steven J | | | 2093 * | USA | 0.50 | 1 | 0.42 | 30 | 12.60 | |  Tyagi, Kushan | | | 2093 * | USA | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Sun, Abe | | | 1621 | USA | 0.50 | 1 | -0.10 | 30 | -3.00 | | | Hua, Margaret M | | | 1970 | USA | 0.50 | 1 | 0.33 | 30 | 9.90 | | | * 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) | | | | 6th North American Amateur Open | Skokie, Illinois | USA | 2011-08-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1782 | 1693 | 0.00 | 1 | -0.38 | 30 | -11.40 | |
| | Girardo, Christopher | | | 1782 | USA | 0.00 | 1 | -0.38 | 30 | -11.40 | |
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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