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Individual Calculations September 2011 |
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| Ummel, Igor Total change: 8.40 | |   |
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| Portland Chess Club Centennial Open | Portland, Oregon | USA | 2011-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2155 | 2082 | 1.50 | 3 | 0.28 | 30 | 8.40 | |
|  Roper, David C | f | | 2278 | USA | 0.00 | 1 | -0.25 | 30 | -7.50 | |  Florea, Alexandru | | | 1930 | CAN | 0.50 | 1 | -0.20 | 30 | -6.00 | | | Roua, Radu | | | 2256 | ROU | 1.00 | 1 | 0.73 | 30 | 21.90 | |
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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