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Individual Calculations January 2019 |
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| Niedbal, Piotr Total change: -29.60 | |   |
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| Preston Chess Congress 2018 | Preston | ENG | 2018-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2068 | 1940 | 2.00 | 4 | 0.68 | 20 | 13.60 | |
|  Jowett, Peter E | | | 2141 | ENG | 0.00 | 1 | -0.24 | 20 | -4.80 | | | Ellames, Roy | | | 2062 | ENG | 1.00 | 1 | 0.67 | 20 | 13.40 | |  Waller, Dan | | | 2046 | ENG | 0.00 | 1 | -0.36 | 20 | -7.20 | | | Bimpson, Tom | | | 2023 | ENG | 1.00 | 1 | 0.61 | 20 | 12.20 | |
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) | | | | 10th CSC London Chess Classic: Weekend Open | London | ENG | 2018-12-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1805 | 1940 | 0.50 | 4 | -2.16 | 20 | -43.20 | |
| | Voiculescu-Holvad, Stefan | | | 1605 | FRA | 0.00 | 1 | -0.88 | 20 | -17.60 | | | Young, Daniel J | | | 2021 | ENG | 0.50 | 1 | 0.11 | 20 | 2.20 | | | Fielding, Michael | | | 1751 | ENG | 0.00 | 1 | -0.75 | 20 | -15.00 | | | Ridge, Michael | | | 1841 | SCO | 0.00 | 1 | -0.64 | 20 | -12.80 | |
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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