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Individual Calculations April 2021 |
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| Grzelak, Artur Total change: -18.00 | |   |
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| Druzynowe Mistrzostwa Mazowsza 2021 Round 4-7 | mazowieckie | POL | 2021-02-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1958 | 2132 | 2.00 | 4 | -0.90 | 20 | -18.00 | |
|  Wojtaszewski, Piotr | | | 2010 | POL | 1.00 | 1 | 0.33 | 20 | 6.60 | |  Celinski, Kamil | | | 1937 | POL | 0.00 | 1 | -0.75 | 20 | -15.00 | | | Kosny, Marek | | | 1872 | POL | 0.50 | 1 | -0.32 | 20 | -6.40 | | | Chrzaszcz, Malvina | | | 2014 | POL | 0.50 | 1 | -0.16 | 20 | -3.20 | |
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) | | |
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