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Individual Calculations September 2012 |
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| Helfst, Matt D Total change: -9.15 | |   |
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| 113th Annual US Open | Vancouver, Washington | USA | 2012-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2170 | 1991 | 1.00 | 3 | 0.21 | 15 | 3.15 | |
|  Gross, Ronald J | | | 2190 | USA | 1.00 | 1 | 0.76 | 15 | 11.40 | |  Gater, Daniel B | | | 2121 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Pechisker, Alfred | | | 2199 | CAN | 0.00 | 1 | -0.23 | 15 | -3.45 | |
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) | | | | 2nd Metropolitan Chess FIDE International | Los Angeles, California | USA | 2012-08-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2094 | 1991 | 2.50 | 9 | -0.82 | 15 | -12.30 | |
| | Liou, Yian | f | | 2350 | USA | 0.00 | 1 | -0.10 | 15 | -1.50 | | | Chiang, Sarah | | wc | 2121 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Viswanadha, Kesav | | | 2066 | USA | 0.00 | 1 | -0.40 | 15 | -6.00 | | | He, Tommy O | f | | 1982 | USA | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Kong, Dezheng | | | 2051 | CAN | 0.00 | 1 | -0.42 | 15 | -6.30 | | | Mousseri, Daniel Y | | | 2018 | USA | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Hills, Kenneth | | | 2100 | USA | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Karman, Allan | | | 2068 | USA | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Xia, Yusheng | | | 2086 | USA | 0.50 | 1 | 0.13 | 15 | 1.95 | |
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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