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Individual Calculations October 2021 |
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| Sathish, Abinavah Total change: 8.00 | |   |
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| 2021 Gauteng North Open (Section A) | Pretoria | RSA | 2021-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1413 | 1259 | 1.50 | 4 | 0.27 | 40 | 10.80 | |
|  Fourie, Brandon | | | 1580 | RSA | 0.00 | 1 | -0.13 | 40 | -5.20 | |  Levitan, Judah Nathan | | | 1405 | RSA | 0.50 | 1 | 0.20 | 40 | 8.00 | | | Jacobs, Calvin Nicholas | | | 1320 | RSA | 1.00 | 1 | 0.58 | 40 | 23.20 | | | Price, Rowan Daelen | | | 1346 | RSA | 0.00 | 1 | -0.38 | 40 | -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) | | | | 2021 Etienne Lewis (U14 Open) | Pretoria | RSA | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1234 | 1251 | 1.50 | 3 | -0.07 | 40 | -2.80 | |
| | Reyneke, Luke | | | 1303 | RSA | 1.00 | 1 | 0.57 | 40 | 22.80 | | | Boheim, Eugene | | | 1159 | RSA | 0.00 | 1 | -0.63 | 40 | -25.20 | | | Coetsee, Dewald | | | 1241 | RSA | 0.50 | 1 | -0.01 | 40 | -0.40 | |
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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