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Individual Calculations September 2021 |
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| Xu, Jayden Total change: 31.20 | |   |
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| 26th Annual Pacific Coast Open - Under 2100 | Van Nuys, California | USA | 2021-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1732 | 1649 | 3.00 | 6 | 0.65 | 40 | 26.00 | |
|  Molodyk, Mikhail Alexandrovic | | | 1766 | RUS | 1.00 | 1 | 0.66 | 40 | 26.40 | |  Zhang, Cindy | | | 1817 | USA | 0.00 | 1 | -0.28 | 40 | -11.20 | | | Talwalkar, Vedant Ameya | | | 1592 | USA | 0.00 | 1 | -0.58 | 40 | -23.20 | | | Thompson, Buddy | | | 1833 | USA | 1.00 | 1 | 0.74 | 40 | 29.60 | | | Vasquez, Marcus | | | 1637 | USA | 0.50 | 1 | -0.02 | 40 | -0.80 | | | Gumbe, Farirai | | | 1745 | ZIM | 0.50 | 1 | 0.13 | 40 | 5.20 | |
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 - Open Under 14 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1521 | 1649 | 2.00 | 3 | 0.09 | 40 | 3.60 | |
| | Wen, Tommy | | | 1971 | USA | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Plotnick, Jacob | | | 1282 | USA | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Macias Zamora, Jose Armando | | | 1311 | MEX | 1.00 | 1 | 0.12 | 40 | 4.80 | |
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) | | | | 16th Annual Indianapolis Open - Under 2100 | Indianapolis, Indiana | USA | 2021-08-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1755 | 1649 | 1.50 | 4 | 0.04 | 40 | 1.60 | |
| | Ananiadis, Constantine | | | 1848 | USA | 0.50 | 1 | 0.26 | 40 | 10.40 | | | Smith, Roger Christopher | | | 1880 | USA | 0.00 | 1 | -0.21 | 40 | -8.40 | | | Parham, Bernard Louis | | | 1555 | USA | 1.00 | 1 | 0.37 | 40 | 14.80 | | | Menon, Gauri | | | 1735 | USA | 0.00 | 1 | -0.38 | 40 | -15.20 | |
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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