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Individual Calculations September 2023 |
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| Dehmelt, Karl Total change: -9.20 | |   |
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| 10th Annual Potomac Open - Championship | Rockville, MD | USA | 2023-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1947 | 2136 | 3.00 | 5 | -0.73 | 20 | -14.60 | |
|  Sawhney-Duran, Victor | | | 1894 | USA | 0.50 | 1 | -0.30 | 20 | -6.00 | |  Mariappan, Anish M | | | 1969 | USA | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Ling, Evan | | | 1973 | USA | 0.00 | 1 | -0.72 | 20 | -14.40 | | | Yehamandram, Yogeshwar | | | 1918 | USA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Samant, Neil | | | 1982 | USA | 0.50 | 1 | -0.21 | 20 | -4.20 | |
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) | | | | 6th Annual Irwin National Tournament of Senior State Champions | Grand Rapids, Michigan | USA | 2023-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2077 | 2136 | 3.00 | 5 | 0.27 | 20 | 5.40 | |
| | Sheaf, Michael A | | | 1736 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Altucher, James | | | 1776 | USA | 0.50 | 1 | -0.40 | 20 | -8.00 | | | Fedorowicz, John P | g | | 2388 | USA | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Burnett, Ronald W | m | | 2288 | USA | 0.50 | 1 | 0.20 | 20 | 4.00 | | | Rubsamen, Cornelius | | | 2196 | USA | 0.50 | 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) | | |
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