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Individual Calculations May 2010 |
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| Prather, Chris Total change: 0.00 | |   |
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| 2010 World Amateur Chess Championships | Skokie, Illinois | USA | 2010-03-19 |
| Rc | Ro | w | n | change | Rp | K | K*chg | Game |
| 1905 | 0 | 2.00 | 6 | 0.00 | 1780 | | 0.00 | |
|  Stone, George W | | | 1937 | USA | 0.00 | 1 | 0.00 | | 0.00 | | | Nieto, Guillermo | | | 1839 | COL | 1.00 | 1 | 0.00 | | 0.00 | |  Mohammad, Shaikh | | | 1955 | IND | 0.00 | 1 | 0.00 | | 0.00 | | | Emdin, Mark | | | 1945 | RUS | 0.00 | 1 | 0.00 | | 0.00 | | | Ionita, Gheorghe | | | 1760 | ROU | 1.00 | 1 | 0.00 | | 0.00 | | | Caballero, Luis Fernando Torino | | | 1994 | ARG | 0.00 | 1 | 0.00 | | 0.00 | |
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) | | | | The Bill Wright St. Louis Open | St. Louis, Missouri | USA | 2010-04-10 |
| Rc | Ro | w | n | change | Rp | K | K*chg | Game |
| 2207 | 0 | 1.50 | 4 | 0.00 | 2120 | | 0.00 | |
| | Abrahamyan, Tatev | | wf | 2295 | USA | 0.50 | 1 | 0.00 | | 0.00 | | | Jung, Hans | f | | 2133 | CAN | 1.00 | 1 | 0.00 | | 0.00 | | | Luther, Ronald | | | 2136 | USA | 0.00 | 1 | 0.00 | | 0.00 | | | Zenyuk, Iryna | c | wm | 2263 | USA | 0.00 | 1 | 0.00 | | 0.00 | |
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) | | |
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