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Individual Calculations September 2023 |
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| Qiu, Laura Total change: 27.60 | |   |
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| WIM Ruth Haring Memorial Tuesday Night Marathon - Over 2000 Round 4-7 | San Francisco, CA | USA | 2023-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1786 | 1721 | 2.00 | 2 | 1.18 | 40 | 47.20 | |
|  Anderson, Michael | | | 1712 | USA | 1.00 | 1 | 0.49 | 40 | 19.60 | |  Walder, Michael | | | 1859 | USA | 1.00 | 1 | 0.69 | 40 | 27.60 | |
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) | | | | XXXIII Pan-American Youth Chess Festival - Under 10 Female | Chicago, IL | USA | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1495 | 1721 | 4.00 | 6 | -0.49 | 40 | -19.60 | |
| | Aguayo Carreno, Sofia Alejandra | | | 1321 * | CHI | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Qian, Ashley | | | 1496 | CAN | 0.00 | 1 | -0.78 | 40 | -31.20 | | | Guzman Garcia, Mia Fernanda | | | 1733 | MEX | 1.00 | 1 | 0.52 | 40 | 20.80 | | | Chovanec, Alice | | | 1590 | USA | 1.00 | 1 | 0.32 | 40 | 12.80 | | | Yang, Aimee | | | 1598 | USA | 1.00 | 1 | 0.33 | 40 | 13.20 | | | Zhu, Alicia | | | 1232 | USA | 0.00 | 1 | -0.96 | 40 | -38.40 | | | * 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) | | |
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