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Individual Calculations September 2009 |
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| Zheng, Haotian Total change: -12.25 | |   |
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| 14th Annual Bradley Open | Windsor Locks, Connecticut | USA | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2181 | 2129 | 0.50 | 2 | -0.37 | 25 | -9.25 | |
|  Castaneda, Nelson | f | | 2282 | USA | 0.50 | 1 | 0.20 | 25 | 5.00 | | | Prawira, Dennis | | | 2080 | USA | 0.00 | 1 | -0.57 | 25 | -14.25 | |
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) | | | | 20th Annual Vermont Resort Open | Stratton Mountain, Vermont | USA | 2009-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2042 | 2129 | 0.50 | 1 | -0.12 | 25 | -3.00 | |
| | Tuhrim, Richard J | | | 2042 | USA | 0.50 | 1 | -0.12 | 25 | -3.00 | |
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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