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Individual Calculations September 2009 |
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| He, Tommy O Total change: 77.85 | |   |
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| DFW FIDE Open IV | Richardson, Texas | USA | 2009-06-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1902 | 1671 | 1.00 | 2 | 0.54 | 25 | 13.50 | |
|  Chandra, Kevin | | | 1782 | USA | 1.00 | 1 | 0.65 | 25 | 16.25 | |  Ramirez, Alejandro | g | | 2021 | CRC | 0.00 | 1 | -0.11 | 25 | -2.75 | |
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) | | | | Dallas Chess Club Summer Round Robin | Richardson, Texas | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1715 | 1671 | 6.00 | 9 | 1.95 | 25 | 48.75 | |
| | Williams, Mack H | | | 1749 | USA | 1.00 | 1 | 0.61 | 25 | 15.25 | | | Jamison, Courtney | | | 1976 | USA | 0.00 | 1 | -0.14 | 25 | -3.50 | | | Su, Dion | | | 1451 | USA | 1.00 | 1 | 0.22 | 25 | 5.50 | | | Sneden, Jeffrey C | | | 1751 | USA | 0.50 | 1 | 0.11 | 25 | 2.75 | | | Wilson, John D | | | 1751 | USA | 1.00 | 1 | 0.61 | 25 | 15.25 | | | Baumann, Glenn | | | 1509 | USA | 1.00 | 1 | 0.29 | 25 | 7.25 | | | Green, Austen Jay | | | 2021 | USA | 0.50 | 1 | 0.39 | 25 | 9.75 | | | Jones, Julia E | | | 1451 | USA | 1.00 | 1 | 0.22 | 25 | 5.50 | | | Xiong, Jeffery | | | 1776 | USA | 0.00 | 1 | -0.36 | 25 | -9.00 | |
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 V | Richardson, Texas | USA | 2009-07-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1976 | 1685 | 0.00 | 1 | -0.15 | 15 | -2.25 | |
| | Jamison, Courtney | | | 1976 | USA | 0.00 | 1 | -0.15 | 15 | -2.25 | |
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) | | | NOTE: K factor changed | | XX Panamericano Mar del Plata U10 Abs | Mar del Plata | ARG | 2009-08-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1887 | 1685 | 2.00 | 3 | 1.19 | 15 | 17.85 | |
| | Acosta, Pablo Ismael | | | 1977 | ARG | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Palu, Andres | | | 1656 | ARG | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Zapata Arbelaez, Estiven | | | 2027 | COL | 1.00 | 1 | 0.88 | 15 | 13.20 | |
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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