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Individual Calculations July 2021 |
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| Perkowski, Jakub Total change: -4.00 | |   |
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| Mistrzostwa Polski Juniorow 2021 do lat 8 | Poronin | POL | 2021-06-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1085 | 1054 | 1.50 | 3 | 0.13 | 40 | 5.20 | |
|  Janeczek, Maksymilian | | | 1016 | POL | 0.00 | 1 | -0.55 | 40 | -22.00 | |  Halhoul, Kamil | | | 1090 | POL | 1.00 | 1 | 0.55 | 40 | 22.00 | | | Kopacki, Aleksander | | | 1148 | POL | 0.50 | 1 | 0.13 | 40 | 5.20 | |
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) | | | | Miedzywojewodzkie Mistrzostwa Mlodzikow PL-LU 2021 - Chlopcy | Wasilkow | POL | 2021-06-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1266 | 1054 | 1.00 | 3 | 0.29 | 40 | 11.60 | |
| | Chiszko, Oskar | | | 1355 | POL | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Smerachanski, Mihail | | | 1188 | POL | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Jasiulewicz, Kamil | | | 1255 | POL | 0.00 | 1 | -0.24 | 40 | -9.60 | |
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) | | | | 13. Memorial Bieluczykow Bialystok 2021 - grupa B | Bialystok | POL | 2021-06-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1233 | 1054 | 1.50 | 7 | -0.52 | 40 | -20.80 | |
| | Pieczulis, Hubert | | | 1454 * | POL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Prazych, Tadeusz | | | 1303 | POL | 0.50 | 1 | 0.31 | 40 | 12.40 | | | Jaroszewicz, Dominika | | | 1013 | POL | 0.00 | 1 | -0.56 | 40 | -22.40 | | | Malinowski, Grzegorz | | | 1157 | POL | 1.00 | 1 | 0.64 | 40 | 25.60 | | | Wadolowski, Adrian | | | 1195 | POL | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Rusak, Jan | | | 1366 | POL | 0.00 | 1 | -0.14 | 40 | -5.60 | | | Krysiewicz, Zofia | | | 1143 | POL | 0.00 | 1 | -0.38 | 40 | -15.20 | | | * 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) | | |
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