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Individual Calculations October 2021 |
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| Nel, Hayley Total change: -48.00 | |   |
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| 2021 Gauteng North Open (Section B) | Pretoria | RSA | 2021-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1136 | 1193 | 0.00 | 2 | -1.16 | 40 | -46.40 | |
|  Yang, Alex | | | 1128 | RSA | 0.00 | 1 | -0.59 | 40 | -23.60 | | | Ramlall, Sanjana | | | 1143 | RSA | 0.00 | 1 | -0.57 | 40 | -22.80 | |
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) | | | | African Youth Chess Championship (U16 Girls) | Accra | GHA | 2021-09-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1276 | 1193 | 2.50 | 6 | -0.04 | 40 | -1.60 | |
|  Kahihu, Neema | | | 1127 | KEN | 1.00 | 1 | 0.41 | 40 | 16.40 | | | Marape, Naledi | | wf | 1593 * | BOT | 0.50 | 1 | 0.42 | 40 | 16.80 | | | Bettaieb, Salma | | | 1149 | TUN | 0.00 | 1 | -0.56 | 40 | -22.40 | | | Mahmoud Youssef, Noha | | | 1152 | EGY | 0.00 | 1 | -0.56 | 40 | -22.40 | | | Shriyan, Santosh Priyasha | | | 1542 | MAW | 0.00 | 1 | -0.11 | 40 | -4.40 | | | Sarah, Momanyi Mukeira | | | 1093 | KEN | 1.00 | 1 | 0.36 | 40 | 14.40 | | | * 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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