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Individual Calculations May 2011 |
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| Costley, Martin O Total change: -21.50 | |   |
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| Surrey Open 2011 | Sutton | ENG | 2011-04-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1986 | 2173 | 3.50 | 6 | -0.86 | 25 | -21.50 | |
|  Foster, James C | | | 2013 | ENG | 0.00 | 1 | -0.71 | 25 | -17.75 | |  Holland, James P | | | 2110 | ENG | 0.00 | 1 | -0.59 | 25 | -14.75 | | | Pattni, Kishan | | | 1773 * | ENG | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Cannon, Raymond C | | | 2052 | ENG | 1.00 | 1 | 0.34 | 25 | 8.50 | | | Wadsworth, Matthew J | | | 1921 | ENG | 1.00 | 1 | 0.19 | 25 | 4.75 | | | Seymour, Timothy P | | | 2044 | ENG | 0.50 | 1 | -0.17 | 25 | -4.25 | | | * 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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