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Individual Calculations September 2011 |
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| Aiello, Roberto Total change: -16.80 | |   |
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| Portland Chess Club Centennial Open | Portland, Oregon | USA | 2011-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2106 | 1992 | 0.50 | 3 | -0.56 | 30 | -16.80 | |
|  Bragg, David R | f | | 2204 | USA | 0.00 | 1 | -0.23 | 30 | -6.90 | |  Patterson, Roger | | | 2141 | CAN | 0.50 | 1 | 0.20 | 30 | 6.00 | | | Pitre, H G | | | 1974 | USA | 0.00 | 1 | -0.53 | 30 | -15.90 | |
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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