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Individual Calculations September 2021 |
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| Xu, Alan Total change: 78.40 | |   |
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| 2021 North American Youth Chess Championships - Open Under 10 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1390 | 1173 | 3.00 | 4 | 1.96 | 40 | 78.40 | |
|  Cherukuri, Nitesh | | | 1514 | USA | 1.00 | 1 | 0.88 | 40 | 35.20 | |  Chavez Echeverria, Adan | | | 1123 | MEX | 1.00 | 1 | 0.43 | 40 | 17.20 | | | Liu, Patrick | | | 1573 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Liu, Nathan Chang | | | 1350 | USA | 1.00 | 1 | 0.73 | 40 | 29.20 | | | * 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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