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Individual Calculations June 2023 |
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| Blackford, Ross Total change: 52.80 | |   |
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| Durham County Chess Congress - Open | Darlington | ENG | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1974 | 1704 | 2.50 | 4 | 1.74 | 40 | 69.60 | |
|  Dauber, Stephen W | | | 2062 | ENG | 1.00 | 1 | 0.90 | 40 | 36.00 | |  Coathup, Roger H | | | 2087 | ENG | 0.50 | 1 | 0.41 | 40 | 16.40 | | | Ackley, Peter J E | | | 1929 | ENG | 0.50 | 1 | 0.28 | 40 | 11.20 | | | Caso Huerta, Marcos | | | 1816 | ESP | 0.50 | 1 | 0.15 | 40 | 6.00 | |
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) | | | | Ayr Open 2023 - Scottish Chess Tour | Ayr | SCO | 2023-05-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1791 | 1704 | 1.50 | 5 | -0.42 | 40 | -16.80 | |
| | Brown, Steven A | | | 1926 | SCO | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Irving, Neil | | | 1818 | SCO | 0.00 | 1 | -0.34 | 40 | -13.60 | | | Lampard, Alice | | | 1733 | SCO | 0.00 | 1 | -0.46 | 40 | -18.40 | | | McPheator, Gary | | | 1695 | SCO | 1.00 | 1 | 0.49 | 40 | 19.60 | | | Sykes, Chris | | | 1785 | SCO | 0.50 | 1 | 0.11 | 40 | 4.40 | |
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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