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Individual Calculations July 2009 |
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| Obregon Rodriguez, Juan Lu Total change: -54.25 | |   |
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| LV Campeonato Nacional Abierto de Ajedrez (1ra. Fuerza) | Toluca, Edo. de Mexico | MEX | 2009-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2010 | 2226 | 2.50 | 6 | -2.12 | 25 | -53.00 | |
|  Garcia Quiroz, Omar Alejan | | | 1876 | MEX | 0.50 | 1 | -0.39 | 25 | -9.75 | |  Juarez Velazquez, Hector | | | 2015 | MEX | 1.00 | 1 | 0.23 | 25 | 5.75 | | | Martinez Castaneda, Allan | | | 2080 | MEX | 0.50 | 1 | -0.20 | 25 | -5.00 | | | Cortes Rodriguez, Marco | | | 2036 | MEX | 0.00 | 1 | -0.75 | 25 | -18.75 | | | Navarrete Perea, Jose | | | 1965 | MEX | 0.00 | 1 | -0.82 | 25 | -20.50 | | | Edgardo, Almedina-Ortiz | | | 2087 | PUR | 0.50 | 1 | -0.19 | 25 | -4.75 | |
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) | | | | 2009 Texas State and Amateur Championship | San Antonio, Texas | USA | 2009-05-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2127 | 2226 | 3.00 | 4 | 0.49 | 25 | 12.25 | |
| | Dejmek, Mark W | | | 2128 | USA | 1.00 | 1 | 0.37 | 25 | 9.25 | | | Nonchev, Kalin K | | | 2159 | USA | 0.50 | 1 | -0.09 | 25 | -2.25 | | | Schoonmaker, Nicholas | c | | 2219 | USA | 0.50 | 1 | -0.01 | 25 | -0.25 | | | Hyltin, John Paul | | | 2001 | USA | 1.00 | 1 | 0.22 | 25 | 5.50 | |
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) | | | NOTE: K factor changed | | DFW FIDE Open III | Richardson, Texas | USA | 2009-05-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2124 | 2226 | 1.00 | 3 | -0.90 | 15 | -13.50 | |
| | Vaidya, Chaitanya | | | 2206 | IND | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Pamatmat, Jrod | | | 2008 | USA | 0.00 | 1 | -0.78 | 15 | -11.70 | | | Nonchev, Kalin K | | | 2159 | USA | 0.00 | 1 | -0.59 | 15 | -8.85 | |
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) | | |
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