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Individual Calculations September 2011 |
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| Sun, Abe Total change: 14.70 | |   |
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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 |
| 1895 | 1621 | 1.00 | 3 | 0.41 | 30 | 12.30 | |
|  Schmakel, Sam A | | | 2021 * | USA | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Vitkauskas, Vytaut | | | 1693 | USA | 0.50 | 1 | 0.10 | 30 | 3.00 | |  Hua, Margaret M | | | 1970 | USA | 0.50 | 1 | 0.39 | 30 | 11.70 | | | * 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) | | | NOTE: K factor changed | | 6th North American Amateur Open | Skokie, Illinois | USA | 2011-08-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1739 | 1621 | 0.50 | 1 | 0.16 | 15 | 2.40 | |
| | Delay, Joe | | | 1739 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | |
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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