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Individual Calculations August 2021 |
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| Pettersson, Alexander Total change: -26.80 | |   |
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| Najdorf Chess Festival 2021 gr. A | Warszawa | POL | 2021-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1985 | 1995 | 4.00 | 9 | -0.76 | 20 | -15.20 | |
|  Pacan-Milej, Kosma | f | | 2395 * | POL | 0.00 | 1 | -0.08 | 20 | -1.60 | |  Zalega, Maciej | | | 1841 | POL | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Zbrzeski, Piotr | | | 1823 | POL | 0.50 | 1 | -0.23 | 20 | -4.60 | | | Nawalaniec, Adam | | | 1772 | POL | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Kubicka, Anna | | wm | 2210 | POL | 0.00 | 1 | -0.23 | 20 | -4.60 | | | Smietanska, Wiktoria | c | | 1802 | POL | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Chmiel, Marcin | | | 2237 | POL | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Worobiej, Daniel | | | 1914 | POL | 0.50 | 1 | -0.11 | 20 | -2.20 | | | Kubiak, Jakub | | | 1871 | POL | 0.50 | 1 | -0.17 | 20 | -3.40 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | Warsaw Chess Open - A | Warszawa | POL | 2021-07-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2077 | 1995 | 3.00 | 9 | -0.58 | 20 | -11.60 | |
| | Fargac, Martin | f | | 2320 | CZE | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Praczukowski, Stanislaw | | | 2156 | POL | 0.50 | 1 | 0.21 | 20 | 4.20 | | | Krasiewicz, Robert | | | 2049 | POL | 0.00 | 1 | -0.42 | 20 | -8.40 | | | Jarzebowski, Kacper | | | 2110 | POL | 1.00 | 1 | 0.66 | 20 | 13.20 | | | Goslawski, Michal | | | 2174 | POL | 0.00 | 1 | -0.27 | 20 | -5.40 | | | Ciborowski, Konrad Jr | | | 1884 | POL | 0.50 | 1 | -0.15 | 20 | -3.00 | | | Podgorski, Maciej | | | 1908 | POL | 1.00 | 1 | 0.38 | 20 | 7.60 | | | Razdolski, Ilya | | | 2109 | NED | 0.00 | 1 | -0.34 | 20 | -6.80 | | | Sliwerski, Radoslaw | | | 1981 | POL | 0.00 | 1 | -0.52 | 20 | -10.40 | |
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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