Individual Calculations December 2023 |
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Roberts, Aston Total change: -17.60 | | ![Rating chart](/imga/chart.gif) ![Personal card](/imga/card.gif) |
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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 |
1925 | 1785 | 0.50 | 3 | -0.44 | 40 | -17.60 | |
| Qian, Bobby | c | | 1992 | USA | 0.00 | 1 | -0.23 | 40 | -9.20 | | Chen, Derek | | | 1920 | USA | 0.50 | 1 | 0.18 | 40 | 7.20 | | Zhu, Ryan | | | 1862 | USA | 0.00 | 1 | -0.39 | 40 | -15.60 | | 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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