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Individual Calculations December 2017 |
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| Russell, Harry Total change: -10.00 | |   |
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| Preston Chess Congress | Preston | ENG | 2017-11-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1957 | 2008 | 2.00 | 4 | -0.25 | 40 | -10.00 | |
|  Dong, Bao Nghia | | | 2143 | VIE | 0.00 | 1 | -0.32 | 40 | -12.80 | |  Reed, John | | | 1884 | ENG | 1.00 | 1 | 0.33 | 40 | 13.20 | | | Taylor, Mark | | | 1773 | ENG | 0.50 | 1 | -0.29 | 40 | -11.60 | | | Bryant, Richard B E | | | 2026 | ENG | 0.50 | 1 | 0.03 | 40 | 1.20 | |
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) | | |
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