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Individual Calculations September 2021 |
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| Bian, Erin Total change: 58.00 | |   |
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| 2nd Annual John D. Rockefeller III National Tournament of Elementary School State Champions | Cherry Hill, New Jersey | USA | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1673 | 1485 | 0.00 | 1 | -0.26 | 40 | -10.40 | |
|  Deng, Henry | | | 1673 | USA | 0.00 | 1 | -0.26 | 40 | -10.40 | |
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 12 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1379 | 1525 | 6.50 | 7 | 1.71 | 40 | 68.40 | |
| | Marin Garrido, Carolina | | | 1233 | MEX | 1.00 | 1 | 0.15 | 40 | 6.00 | |  Guo, Anni | | | 1312 | CAN | 1.00 | 1 | 0.23 | 40 | 9.20 | | | Vidyarthi, Omya | | wc | 1869 | USA | 0.50 | 1 | 0.38 | 40 | 15.20 | | | Cheng, Claire | | | 1203 | USA | 1.00 | 1 | 0.13 | 40 | 5.20 | | | Ananth, Ananya | | | 1405 | USA | 1.00 | 1 | 0.34 | 40 | 13.60 | | | Pham, Linda | | | 1254 | USA | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Gu, Crystal Jiuzho | | | 1380 | USA | 1.00 | 1 | 0.31 | 40 | 12.40 | |
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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