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Individual Calculations September 2023 |
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| De Coverly, Roger D Total change: -31.00 | |   |
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| 2023 British Championship: Over 65 Championship | Leicester | ENG | 2023-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1949 | 1955 | 4.00 | 7 | 0.44 | 20 | 8.80 | |
|  Matthew, Ian G | | | 1745 | ENG | 1.00 | 1 | 0.23 | 20 | 4.60 | |  Spanton, Tim R | | | 1800 | ENG | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Fryer, David W | | | 1880 | ENG | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Punnett, Alan K | | | 2051 | ENG | 0.50 | 1 | 0.13 | 20 | 2.60 | | | Surtees, Mike J | | | 2059 | ENG | 1.00 | 1 | 0.64 | 20 | 12.80 | | | Orton, Stephen L A | | | 2133 | ENG | 0.00 | 1 | -0.27 | 20 | -5.40 | | | Lawson, Maurice E | | | 1972 | ENG | 0.00 | 1 | -0.48 | 20 | -9.60 | |
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) | | | | 51st Thanet and East Kent Chess Congress - Open | Sandwich | ENG | 2023-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2053 | 1917 | 1.50 | 4 | 0.01 | 20 | 0.20 | |
| | Murphy, Conor E | m | | 2458 | IRL | 0.00 | 1 | -0.03 | 20 | -0.60 | | | Howells, S Wyn | | | 1673 | WLS | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Hayward, Philip | | | 2018 | ENG | 0.50 | 1 | 0.14 | 20 | 2.80 | | | Starley, Robert | | | 2064 | ENG | 0.00 | 1 | -0.30 | 20 | -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) | | | | 57th Berks & Bucks Chess Congress - Championship | Maidenhead | ENG | 2023-08-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1856 | 1917 | 1.50 | 6 | -2.00 | 20 | -40.00 | |
| | Seymour, Timothy P | | | 2134 | ENG | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Sommerbauer-Cornell, Ben | | | 1849 | ENG | 0.00 | 1 | -0.59 | 20 | -11.80 | | | Rubeck, Jonathan | | | 1755 | ENG | 0.00 | 1 | -0.71 | 20 | -14.20 | | | Faulkner, Martin J | | | 1801 | ENG | 1.00 | 1 | 0.34 | 20 | 6.80 | | | Llewellyn, Julian D | | | 1791 | ENG | 0.00 | 1 | -0.67 | 20 | -13.40 | | | Hall, Antony C | | | 1804 | ENG | 0.50 | 1 | -0.15 | 20 | -3.00 | |
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) | | |
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