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Individual Calculations July 2009 |
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| Arrata Peralta, Pedro Total change: -12.30 | |   |
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| XIV Grand Prix, 3era. Parada | Guayaquil | ECU | 2009-04-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1854 | 1996 | 1.00 | 4 | -1.67 | 15 | -25.05 | |
|  Martinez, Steven | | | 1689 | ECU | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Camacho Penate, G. | | | 2206 | CUB | 0.00 | 1 | -0.23 | 15 | -3.45 | |  Leon Magallanes, Isaac | | | 1822 | ECU | 0.00 | 1 | -0.73 | 15 | -10.95 | | | Bone, Jhonny | | | 1699 | ECU | 0.00 | 1 | -0.85 | 15 | -12.75 | |
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) | | | | XIV Grand Prix, 4ta. Parada | Coca | ECU | 2009-05-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1973 | 1996 | 3.00 | 4 | 0.85 | 15 | 12.75 | |
| | Cerezo Najera, Jorge | | | 1753 | ECU | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Chiluisa Fuertes, Mario | | | 2041 | ECU | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Caceres Limones, Anara | | | 1788 | ECU | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Aucay Pelaez, Mauro | f | | 2308 | ECU | 1.00 | 1 | 0.86 | 15 | 12.90 | |
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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