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Individual Calculations January 2023 |
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| Costin, Petrica Total change: -30.40 | |   |
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| Petra Chess Weekend - 29th ed. | Satu Mare | ROU | 2022-12-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1737 | 2047 | 3.50 | 6 | -1.52 | 20 | -30.40 | |
|  Amati, Traian | | | 1647 * | ROU | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Grad, Gheorghe | | | 1852 | ROU | 0.00 | 1 | -0.75 | 20 | -15.00 | | | Bonte, Arghir | | | 1740 | ROU | 0.50 | 1 | -0.36 | 20 | -7.20 | | | Macioca, Laurentiu-Daniel | | | 1484 | ROU | 1.00 | 1 | 0.02 | 20 | 0.40 | | | Sarivan, Margareta | | | 1822 | MDA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Trifoi, Mihaela-Ioana | | | 1874 | ROU | 0.00 | 1 | -0.73 | 20 | -14.60 | | | * 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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