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Individual Calculations May 2022 |
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| Gray, David Total change: 28.20 | |   |
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| Coulsdon Chess Daytime Chess - Spring 2022 S4 Apr 2022 | London | ENG | 2022-03-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1527 | 1063 | 1.00 | 2 | 0.89 | 20 | 17.80 | |
|  Bermudez, Venerando | | | 1516 | ENG | 0.00 | 1 | -0.06 | 20 | -1.20 | |  Pratley, Ian | | | 1537 | ENG | 1.00 | 1 | 0.95 | 20 | 19.00 | |
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) | | | | Coulsdon Chess Standardplay Congress Easter 2022 - Minor (U1500) | London | ENG | 2022-04-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1254 | 1031 | 1.00 | 2 | 0.52 | 20 | 10.40 | |
| | Howes, David J | | | 1389 | ENG | 0.00 | 1 | -0.10 | 20 | -2.00 | | | Denford, Les | | | 1118 | ENG | 1.00 | 1 | 0.62 | 20 | 12.40 | |
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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