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Individual Calculations September 2021 |
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| Guo, Edward Total change: -63.60 | |   |
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| 2021 North American Youth Chess Championships - Open Under 12 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1882 | 1640 | 0.00 | 3 | -0.65 | 40 | -26.00 | |
|  Hardaway, Brewington | c | | 2026 | USA | 0.00 | 1 | -0.09 | 40 | -3.60 | | | Sripada, Havish | | | 1733 | USA | 0.00 | 1 | -0.37 | 40 | -14.80 | | | Pang, Brian | | | 1888 | USA | 0.00 | 1 | -0.19 | 40 | -7.60 | |
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) | | | | 53rd Annual Atlantic Open - Under 2100 | Reston, Virginia | USA | 2021-08-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1678 | 1640 | 0.00 | 2 | -0.94 | 40 | -37.60 | |
|  Scott, Harold | | | 1941 | USA | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Jackson, Cayden | | | 1414 | USA | 0.00 | 1 | -0.79 | 40 | -31.60 | |
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) | | |
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