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Individual Calculations September 2011 |
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| Szpisjak, Steven J Total change: -1.05 | |   |
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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 |
| 1907 | 2127 | 3.00 | 5 | -0.77 | 15 | -11.55 | |
|  Vitkauskas, Vytaut | | | 1727 * | USA | 0.50 | 1 | -0.42 | 15 | -6.30 | | | Karman, Allan | | | 2028 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Dobrovolny, Charles | | | 1743 | USA | 1.00 | 1 | 0.09 | 15 | 1.35 | |  Helfst, Matt D | | | 1971 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Schmakel, Sam A | | | 2064 | USA | 0.00 | 1 | -0.59 | 15 | -8.85 | | | * 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) | | | | 4th Annual Chicago Class | Wheeling, Illinois | USA | 2011-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2118 | 2127 | 2.00 | 3 | 0.46 | 15 | 6.90 | |
| | Smarty, Sylvester | | | 2122 | USA | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Brock, William H | | | 2047 | USA | 1.00 | 1 | 0.39 | 15 | 5.85 | | | Ni, Viktorija | | wm | 2185 | LAT | 0.00 | 1 | -0.42 | 15 | -6.30 | |
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 |
| 1785 | 2127 | 2.00 | 2 | 0.24 | 15 | 3.60 | |
| | Delay, Joe | | | 1739 | USA | 1.00 | 1 | 0.09 | 15 | 1.35 | | | Kosteris, Dimitri | | | 1830 | USA | 1.00 | 1 | 0.15 | 15 | 2.25 | |
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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