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Individual Calculations December 2023 |
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| Zhang, Derek Total change: -23.80 | |   |
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| 54th annual National Chess Congress - Premier | Philadelphia, PA | USA | 2023-11-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1944 | 2186 | 2.00 | 4 | -1.19 | 20 | -23.80 | |
|  Li, Michael | | | 1974 | USA | 0.50 | 1 | -0.27 | 20 | -5.40 | |  Wang, Kevin | | | 1853 | USA | 0.50 | 1 | -0.38 | 20 | -7.60 | | | Qian, Bobby | c | | 1992 | USA | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Dong, Kyle Qiyu | c | | 1957 | USA | 0.00 | 1 | -0.79 | 20 | -15.80 | |
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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