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Individual Calculations September 2021 |
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| Kumar, Arya Total change: 18.80 | |   |
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| 9th Annual WIM Ruth Haring National Tournament of Girls State Champions | Cherry Hill, New Jersey | USA | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1911 | 1887 | 1.50 | 3 | 0.10 | 40 | 4.00 | |
|  Prasanna, Gracy Franco | | | 1858 | USA | 0.50 | 1 | -0.04 | 40 | -1.60 | |  Vittal, Sanjana | | wf | 1938 | USA | 0.50 | 1 | 0.07 | 40 | 2.80 | | | Ehsani, Yassamin | | wf | 1936 | USA | 0.50 | 1 | 0.07 | 40 | 2.80 | |
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) | | | | 2021 North American Youth Chess Championships - Girls Under 18 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1841 | 1804 | 4.00 | 8 | 0.37 | 40 | 14.80 | |
| | Zeng, Sheena | | wc | 2078 | USA | 0.50 | 1 | 0.33 | 40 | 13.20 | | | Gaw, Chloe | | | 1685 | USA | 1.00 | 1 | 0.34 | 40 | 13.60 | | | Mou, Iris | | wc | 1828 | USA | 1.00 | 1 | 0.53 | 40 | 21.20 | | | Vittal, Sanjana | | wf | 1920 | USA | 0.50 | 1 | 0.16 | 40 | 6.40 | | | Lee, Alice Teresa | | wc | 1994 | USA | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Matus, Nastassja A | | wf | 1906 | USA | 0.00 | 1 | -0.36 | 40 | -14.40 | | | Carrillo Aguayo, Bertha Hiromi | | | 1604 | MEX | 1.00 | 1 | 0.24 | 40 | 9.60 | | | Dommalapati, Aasa | | wc | 1713 | USA | 0.00 | 1 | -0.62 | 40 | -24.80 | |
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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