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Individual Calculations May 2021 |
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| Perrin, Brent Total change: 7.80 | |   |
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| 2021 North Island Championship | Wellington | NZL | 2021-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1689 | 1782 | 4.00 | 6 | 0.39 | 20 | 7.80 | |
|  Dunn, Paul | | | 2182 * | NZL | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Yu, Weiyang | | | 1382 * | NZL | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Scott, David | | | 1477 | NZL | 0.00 | 1 | -0.86 | 20 | -17.20 | | | Rossiter, Philip E | | | 1686 | NZL | 1.00 | 1 | 0.37 | 20 | 7.40 | | | Gan, Emily | | | 1382 * | NZL | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Adair, Daniel W | | | 2026 | NZL | 1.00 | 1 | 0.80 | 20 | 16.00 | | | * 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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