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Individual Calculations October 2008 |
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| Zepeda, Sonia Total change: -3.75 | |   |
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| Campeonato Subzonal Femenino 2008 | Guatemala, Guatemala | GUA | 2008-06-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1992 | 2091 | 4.00 | 7 | -0.31 | 15 | -4.65 | |
|  Monterroso, Karla | | wf | 1741 | GUA | 0.50 | 1 | -0.39 | 15 | -5.85 | | | Madrigal, Ana Daniela | | | 1807 | NCA | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Zepeda, Lorena | | wm | 2176 | ESA | 0.50 | 1 | 0.12 | 15 | 1.80 | |  Sanchez, Ingrid | | | 2024 | ESA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Mazariego-K., Carolina | | wm | 2093 | GUA | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Munoz, Carolina | | | 2034 | CRC | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Castaneda, Ada | | wf | 2068 | ESA | 0.00 | 1 | -0.53 | 15 | -7.95 | |
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) | | | | 36th Annual World Open (U2400 Section) | Philadelphia, Pennsylvania | USA | 2008-06-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2338 | 2091 | 0.00 | 1 | -0.19 | 15 | -2.85 | |
| | Mandizha, Farai | f | | 2338 | ZIM | 0.00 | 1 | -0.19 | 15 | -2.85 | |
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) | | | | IV Torneo Internacional de Ajedrez Alajuela 2008 | Alajuela | CRC | 2008-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2318 | 2122 | 1.00 | 3 | 0.25 | 15 | 3.75 | |
| | Leyva, Hector | m | | 2380 | ESA | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Urbina, Ricardo | m | | 2265 | HON | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Arias, Mauricio | m | | 2310 | CRC | 0.00 | 1 | -0.26 | 15 | -3.90 | |
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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