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Individual Calculations September 2009 |
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| Guevara Silva, Roger Total change: -2.25 | |   |
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| XIV Grand Prix, 6ta. Parada "Fundacion de Guayaquil" | Guayaquil | ECU | 2009-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1910 | 1703 | 1.00 | 4 | -0.09 | 25 | -2.25 | |
|  Chang Suarez, Rommel | | | 2103 * | ECU | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Sanchez, John | | | 1975 | ECU | 0.00 | 1 | -0.17 | 25 | -4.25 | | | Martinez, Joel | | | 1571 | ECU | 1.00 | 1 | 0.32 | 25 | 8.00 | |  Gutierrez Vera, Miguel | | | 1990 | PER | 0.00 | 1 | -0.16 | 25 | -4.00 | | | * 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) | | |
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