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Individual Calculations September 2023 |
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| Pollack, Oscar Total change: 19.20 | |   |
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| 2023 British Championship | Leicester | ENG | 2023-07-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2210 | 2096 | 4.00 | 9 | 0.73 | 20 | 14.60 | |
|  Pigott, John C | m | | 2347 | ENG | 1.00 | 1 | 0.81 | 20 | 16.20 | |  Kanyamarala, Trisha | | wm | 2344 | IRL | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Hebden, Mark L | g | | 2436 | ENG | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Bates, Richard A | m | | 2324 | ENG | 0.50 | 1 | 0.29 | 20 | 5.80 | | | Jones, Steven A | | | 2175 | ENG | 0.00 | 1 | -0.39 | 20 | -7.80 | | | Szekely, Balazs-Virgil | | | 1957 | ROU | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Badacsonyi, Frankie | | | 1968 | ENG | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Merriman, James | | | 2067 | ENG | 1.00 | 1 | 0.46 | 20 | 9.20 | | | Merriman, John | f | | 2274 | ENG | 0.00 | 1 | -0.27 | 20 | -5.40 | |
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) | | | | East Midlands FIDE Congress 2023 - Under 2400 | Wellingborough | ENG | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1943 | 2091 | 3.00 | 4 | 0.23 | 20 | 4.60 | |
| | Simpson, Ben | | | 1842 | ENG | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Potter, John M | | | 1962 | ENG | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Homer, Stephen J | | | 2002 | ENG | 1.00 | 1 | 0.38 | 20 | 7.60 | | | Badacsonyi, Stanley | | | 1967 | ENG | 0.50 | 1 | -0.17 | 20 | -3.40 | |
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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