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Individual Calculations September 2021 |
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| Winslow, Elliott Total change: 6.80 | |   |
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| 2021 GM Koltanowski Marathon | Berkeley, California | USA | 2021-06-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1798 | 2150 | 3.00 | 4 | -0.53 | 20 | -10.60 | |
|  Sherwood, Peter | | | 1750 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Walder, Michael | | | 1942 | USA | 0.50 | 1 | -0.27 | 20 | -5.40 | | | Del Rosario, Frisco | | | 1750 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Trestor, David | | | 1750 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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) | | | | Mechanics Institute Tuesday Night Marathon July-August 2021 - Open | San Francisco, California | USA | 2021-07-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1940 | 2152 | 3.50 | 4 | 0.54 | 20 | 10.80 | |
| | Clemens, Kristian | | | 1919 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Penagalapati, Abhi | | | 1896 | USA | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Bambou, Christophe | | | 2192 | FRA | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Riese, Kayven | | | 1752 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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) | | | | 4th Annual John T. Irwin National Tournament of Senior State Champions | Cherry Hill, New Jersey | USA | 2021-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2201 | 2152 | 2.50 | 5 | 0.33 | 20 | 6.60 | |
| | Hargrove, James Eryk | | | 1752 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Khmelnitsky, Igor | m | | 2469 | USA | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Burnett, Ronald Wayne | m | | 2325 | USA | 1.00 | 1 | 0.73 | 20 | 14.60 | | | Root, Douglas D | m | | 2465 | USA | 0.00 | 1 | -0.14 | 20 | -2.80 | | | Gibbins, Wilson K | | | 1992 | USA | 0.50 | 1 | -0.21 | 20 | -4.20 | | | * 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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