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Individual Calculations September 2021 |
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| Chen, Justin Total change: 38.80 | |   |
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| 37th Annual GM Arnold Denker National Tournament of High School State Champions | Cherry Hill, New Jersey | USA | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2221 | 2247 | 3.50 | 5 | 0.79 | 20 | 15.80 | |
|  Zhu, Neo | | | 2021 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | |  Shlyakhtenko, Robert | f | | 2370 | USA | 0.50 | 1 | 0.17 | 20 | 3.40 | | | Luo, Ryan | | | 2116 | USA | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Liang, Awonder | g | | 2587 | USA | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Amburgy, Ryan | | | 2012 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | |
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 18 | Chicago, Illinois | USA | 2021-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2190 | 2275 | 6.50 | 9 | 1.15 | 20 | 23.00 | |
| | Major, Richard | | | 1875 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Jin, Ashton | | | 2074 | USA | 0.50 | 1 | -0.26 | 20 | -5.20 | | | Clasby, Derek | | | 2001 | USA | 0.50 | 1 | -0.33 | 20 | -6.60 | | | Chasin, Nico Werner | f | | 2297 | USA | 1.00 | 1 | 0.53 | 20 | 10.60 | | | Narayanan, Samrug | c | | 2245 | USA | 0.00 | 1 | -0.54 | 20 | -10.80 | | | Li, Eric Yuhan | f | | 2266 | USA | 1.00 | 1 | 0.49 | 20 | 9.80 | | | Peng, Shunkai | f | | 2281 | USA | 1.00 | 1 | 0.51 | 20 | 10.20 | | | Shlyakhtenko, Robert | f | | 2351 | USA | 1.00 | 1 | 0.60 | 20 | 12.00 | | | Mardov, Dimitar | f | | 2324 | USA | 0.50 | 1 | 0.07 | 20 | 1.40 | | | * 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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