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Individual Calculations September 2021 |
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| Liu, Kelsey Total change: 147.60 | |   |
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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 |
| 1691 | 1488 | 1.50 | 4 | 0.35 | 40 | 14.00 | |
|  Yan, Ruiyang | | wc | 1888 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Li, Iris | | | 1098 | USA | 1.00 | 1 | 0.09 | 40 | 3.60 | | | Ehsani, Yassamin | | wf | 1888 * | USA | 0.50 | 1 | 0.42 | 40 | 16.80 | | | Vittal, Sanjana | | wf | 1888 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 16 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1611 | 1628 | 7.50 | 8 | 3.34 | 40 | 133.60 | |
| | Tsyganova, Margarita | | | 1412 | USA | 1.00 | 1 | 0.22 | 40 | 8.80 | | | Luster, Shakira | | | 1427 | USA | 1.00 | 1 | 0.24 | 40 | 9.60 | | | Baalla, Nura | | | 1730 | USA | 1.00 | 1 | 0.64 | 40 | 25.60 | | | Eswaran, Aksithi | | wc | 1755 | USA | 1.00 | 1 | 0.67 | 40 | 26.80 | | | Petersen Gonzalez, Paula | | | 1569 | MEX | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Zhou, Chelsea | | | 1583 | USA | 1.00 | 1 | 0.44 | 40 | 17.60 | | | Ke, Rianne | | wc | 1674 | USA | 0.50 | 1 | 0.06 | 40 | 2.40 | | | Menon, Gauri | | | 1735 | USA | 1.00 | 1 | 0.65 | 40 | 26.00 | |
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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