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Individual Calculations January 2010 |
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| San Pedro Morales, Marco A Total change: -30.00 | |   |
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| North America Youth Chess Championships Under 14 | Mazatlan, Sinaloa | MEX | 2009-10-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1831 | 1830 | 0.00 | 2 | -1.00 | 25 | -25.00 | |
|  Gomez Garcia, Jose Santos | | | 1939 | MEX | 0.00 | 1 | -0.35 | 25 | -8.75 | |  Lopez Raygoza, Luis Albert | | | 1723 | MEX | 0.00 | 1 | -0.65 | 25 | -16.25 | |
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) | | | | World Youth Chess Championship-u14 | Antalya | TUR | 2009-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1927 | 1830 | 3.50 | 9 | 0.04 | 25 | 1.00 | |
| | Tejas, Ravichandran | | | 2203 | IND | 0.00 | 1 | -0.10 | 25 | -2.50 | | | Rozovsky, Daniel | f | | 2058 | USA | 0.50 | 1 | 0.29 | 25 | 7.25 | | | Rubes, Jan | | | 2047 | CZE | 0.00 | 1 | -0.22 | 25 | -5.50 | | | Yang,ching Wei, Austin | | | 1707 | TPE | 1.00 | 1 | 0.33 | 25 | 8.25 | | | Ly, Daniel | | | 2024 | AUT | 0.00 | 1 | -0.25 | 25 | -6.25 | | | Zhang, David | | | 1998 | CAN | 0.50 | 1 | 0.22 | 25 | 5.50 | | | El Jawich, Amro | | | 2056 | LIB | 0.50 | 1 | 0.29 | 25 | 7.25 | | | McDonald, Ian | | | 1635 | SCO | 0.50 | 1 | -0.25 | 25 | -6.25 | | | Tairi, Krenar | | | 1619 | MKD | 0.50 | 1 | -0.27 | 25 | -6.75 | |
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) | | | | Absolute National Championship Men´s | Huatulco, Oaxaca | MEX | 2009-12-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2230 | 1830 | 0.00 | 3 | -0.24 | 25 | -6.00 | |
| | Ibarra Chami, Luis Fernand | m | | 2230 * | MEX | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Capo Vidal, Uriel | m | | 2230 * | MEX | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Castellanos Zarate, Brauli | | | 2230 * | MEX | 0.00 | 1 | -0.08 | 25 | -2.00 | | | * 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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