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Individual Calculations December 2021 |
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| Da Costa, Isaias Nascimento Total change: -12.40 | |   |
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| Festival Regional Norte de Xadrez 2021 | Rio Branco AC | BRA | 2021-11-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1607 | 1354 | 0.50 | 4 | -0.31 | 40 | -12.40 | |
|  Donadoni, Jonathan Xavier | | | 1754 * | BRA | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Felix, Luiza De Oliveira | | | 1651 | BRA | 0.00 | 1 | -0.15 | 40 | -6.00 | | | De Avelar, Flavio Henrique | | | 1534 | BRA | 0.00 | 1 | -0.26 | 40 | -10.40 | | | Souza, Neurismar Da Rocha | | | 1490 | BRA | 0.50 | 1 | 0.18 | 40 | 7.20 | | | * 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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