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Individual Calculations June 2023 |
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| Henderson, David Total change: -2.80 | |   |
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| 2022/23 4NCL Division 2 Rounds 9-11 | Milton Keynes | ENG | 2023-04-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2100 | 2116 | 1.50 | 3 | -0.07 | 20 | -1.40 | |
|  Birtwistle, Nigel | | | 2117 | ENG | 0.50 | 1 | 0.00 | 20 | 0.00 | |  Phillips, David A | | | 2062 | ENG | 0.00 | 1 | -0.58 | 20 | -11.60 | | | Burrows, Martin P | | | 2121 | ENG | 1.00 | 1 | 0.51 | 20 | 10.20 | |
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) | | | | English Seniors Championships 2023 - Over 50 | Leamington Spa | ENG | 2023-05-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2092 | 2116 | 3.00 | 6 | -0.07 | 20 | -1.40 | |
| | Rich, Mark C | c | | 2070 | ENG | 0.50 | 1 | -0.06 | 20 | -1.20 | | | Bradbury, Neil H | m | | 2215 | ENG | 0.00 | 1 | -0.36 | 20 | -7.20 | | | Macfarlane, Donald | | | 2207 | ENG | 0.50 | 1 | 0.12 | 20 | 2.40 | | | Donnelly, Andrew J | | | 1716 * | ENG | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Byron, Alan M | | | 2181 | ENG | 0.50 | 1 | 0.09 | 20 | 1.80 | | | Josse, Mark | c | | 2160 | ENG | 0.50 | 1 | 0.06 | 20 | 1.20 | | | * 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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