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Individual Calculations August 2021 |
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| Lachcik, Marek Total change: -53.80 | |   |
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| Najdorf Chess Festival 2021 gr. B | Warszawa | POL | 2021-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1270 | 1481 | 4.00 | 8 | -2.00 | 20 | -40.00 | |
|  Kowalik, Piotr | | | 1084 | POL | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Panczuk, Grzegorz | | | 1721 | POL | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Grzywocz, Wojciech | | | 1276 | POL | 0.00 | 1 | -0.76 | 20 | -15.20 | | | Spoczynski, Marcin | | | 1207 | POL | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Butkiewicz, Piotr | | | 1242 | POL | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Maryniec, Grzegorz | | | 1205 | POL | 0.50 | 1 | -0.33 | 20 | -6.60 | | | Switala, Karina | | | 1235 | POL | 0.00 | 1 | -0.81 | 20 | -16.20 | | | Zybrant, Sandra | | | 1189 | POL | 0.50 | 1 | -0.35 | 20 | -7.00 | |
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) | | | | Warsaw Chess Open - C | Warszawa | POL | 2021-07-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1307 | 1481 | 3.50 | 6 | -0.69 | 20 | -13.80 | |
| | Lachut, Tomasz | | | 1220 | POL | 0.00 | 1 | -0.82 | 20 | -16.40 | | | Renn, Grzegorz | | | 1133 | POL | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Zmijewski, Michal | | | 1119 | POL | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Fudala, Dominik | | | 1523 | POL | 0.50 | 1 | 0.06 | 20 | 1.20 | | | Dabrowska, Aleksandra | | | 1568 | POL | 1.00 | 1 | 0.62 | 20 | 12.40 | | | Kulig, Pawel | | | 1281 | POL | 0.00 | 1 | -0.76 | 20 | -15.20 | |
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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