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Individual Calculations September 2023 |
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| Zhang, Sunny Total change: 22.00 | |   |
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| 2023 Houston Chess Festival - Open | Houston, TX | USA | 2023-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1653 | 1659 | 1.00 | 3 | -0.52 | 40 | -20.80 | |
|  Hendrick, John | | | 1905 | USA | 0.00 | 1 | -0.19 | 40 | -7.60 | |  Etienne, Jace A | | | 1629 | USA | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Guel, Daniel Joseph | | | 1425 | USA | 1.00 | 1 | 0.21 | 40 | 8.40 | |
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) | | | | 11th Annual WIM Ruth Haring National Tournament of Girls State Champions | Grand Rapids, Michigan | USA | 2023-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1277 | 1659 | 1.00 | 1 | 0.09 | 40 | 3.60 | |
| | Escobar Lopez, Laura A | | | 1277 | MEX | 1.00 | 1 | 0.09 | 40 | 3.60 | |
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) | | | | Houston Summer Championship 2023 | Houston, TX | USA | 2023-08-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1733 | 1659 | 3.50 | 5 | 0.98 | 40 | 39.20 | |
| | Ruiz Castillo, Joshua | g | | 2445 | COL | 0.00 | 1 | 0.00 | 40 | 0.00 | | | Zhang, Alicia | | | 1434 | USA | 1.00 | 1 | 0.22 | 40 | 8.80 | | | Tripulskiy, Mark | | | 1641 | UKR | 1.00 | 1 | 0.47 | 40 | 18.80 | | | Krishnan, Anish | | | 1438 | USA | 1.00 | 1 | 0.22 | 40 | 8.80 | | | Revellon, Lucas | | | 1709 | 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) | | |
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