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Individual Calculations September 2021 |
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| Qian, Bobby Total change: 101.60 | |   |
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| 4th Annual Peter Henner Memorial - Under 2100 | Albany, New York | USA | 2021-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1504 | 1192 | 1.00 | 2 | 0.70 | 40 | 28.00 | |
|  Evans, Serena | | | 1415 | USA | 1.00 | 1 | 0.78 | 40 | 31.20 | |  Bihlmeyer, Joseph E | | | 1592 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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) | | | | 2021 North American Youth Chess Championships - Open Under 10 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1501 | 1246 | 2.50 | 3 | 1.84 | 40 | 73.60 | |
| | Yang, Maxwell Z | | | 1275 | USA | 1.00 | 1 | 0.54 | 40 | 21.60 | | | Rajaram, Rohan | | | 1646 * | USA | 0.50 | 1 | 0.42 | 40 | 16.80 | | | Liu, Patrick | | | 1582 | USA | 1.00 | 1 | 0.88 | 40 | 35.20 | | | * 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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