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Individual Calculations April 2019 |
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| Costin, Petrica Total change: -15.20 | |   |
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| Petra Weekend no.23 | Satu Mare | ROU | 2019-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1927 | 2129 | 0.00 | 1 | -0.76 | 20 | -15.20 | |
|  Sogor, Andras-Csaba | | | 1927 | ROU | 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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