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Individual Calculations September 2021 |
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| Su, Kevin Total change: 37.60 | |   |
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| 2021 North American Youth Chess Championships - Open Under 14 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1735 | 1841 | 4.00 | 7 | -0.36 | 40 | -14.40 | |
|  Macias Zamora, Jose Armando | | | 1441 * | MEX | 1.00 | 1 | 0.08 | 40 | 3.20 | |  Reiss, Aiden | | | 1655 | USA | 0.00 | 1 | -0.74 | 40 | -29.60 | | | Rajanish, Abhinav | | | 1619 | USA | 0.50 | 1 | -0.28 | 40 | -11.20 | | | Wang, Ryan R | | | 1741 | USA | 1.00 | 1 | 0.36 | 40 | 14.40 | | | Xie, Bryan | c | | 1998 | USA | 0.00 | 1 | -0.29 | 40 | -11.60 | | | Zhang, Roger | | | 1898 | USA | 0.50 | 1 | 0.08 | 40 | 3.20 | | | Liang, Yu-Cheng | | | 1790 | USA | 1.00 | 1 | 0.43 | 40 | 17.20 | | | * 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) | | | | 53rd Annual Atlantic Open - Major | Reston, Virginia | USA | 2021-08-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1988 | 1841 | 3.00 | 5 | 1.30 | 40 | 52.00 | |
| | Tahmassebi, Bijan | | | 2181 | USA | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Hyland, Mark Daniel | | | 1864 | USA | 1.00 | 1 | 0.53 | 40 | 21.20 | | | Blakeman, Cole Forester | | | 1767 | USA | 1.00 | 1 | 0.40 | 40 | 16.00 | | | Bartell, Thomas | m | | 2241 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Pang, Brian | | | 1888 | USA | 1.00 | 1 | 0.57 | 40 | 22.80 | | | * 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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