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Individual Calculations October 2021 |
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| Kelly, Sean Total change: 10.40 | |   |
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| 2021 IM John Grefe Marathon | Berkeley, California | USA | 2021-08-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1748 | 1782 | 3.50 | 6 | 0.37 | 40 | 14.80 | |
|  Nagel, Ralph | | | 1402 | USA | 1.00 | 1 | 0.09 | 40 | 3.60 | |  Svoboda, Steven | | | 1807 | USA | 0.00 | 1 | -0.47 | 40 | -18.80 | | | Shaughnessy, Elizabeth | | | 1423 | IRL | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Yanofsky, Kevin | | | 1817 | USA | 1.00 | 1 | 0.55 | 40 | 22.00 | | | Dixit, Arun | | | 2030 | USA | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Thornally, Frank | f | | 2010 | USA | 0.50 | 1 | 0.29 | 40 | 11.60 | |
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) | | | | BayAreaChess 45th People's Tournament - A | Santa Clara, California | USA | 2021-09-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1567 | 1782 | 2.00 | 3 | -0.31 | 40 | -12.40 | |
| | Tang, Dylan | | | 1502 | USA | 0.50 | 1 | -0.34 | 40 | -13.60 | | | Liu, Aiden Q | | | 1545 | USA | 1.00 | 1 | 0.20 | 40 | 8.00 | | | Ho, Michael S | | | 1653 | USA | 0.50 | 1 | -0.17 | 40 | -6.80 | |
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) | | | | 2021 Howard Donnelly Memorial Championship - 2000 Plus | San Francisco, California | USA | 2021-09-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1843 | 1782 | 2.00 | 4 | 0.20 | 40 | 8.00 | |
| | Guo, Andrew | | | 1702 | USA | 1.00 | 1 | 0.39 | 40 | 15.60 | | | Weng, Nicholas | | | 1812 | USA | 1.00 | 1 | 0.54 | 40 | 21.60 | | | Chambers, Ezra | f | | 2182 * | BDI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Bansal, Advay | | | 1675 | USA | 0.00 | 1 | -0.65 | 40 | -26.00 | | | * 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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