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Individual Calculations October 2021 |
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| Jacobs, Calvin Nicholas Total change: 1.60 | |   |
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| 2021 Gauteng North Open (Section A) | Pretoria | RSA | 2021-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1356 | 1320 | 1.00 | 5 | -1.37 | 40 | -54.80 | |
|  Dinham, James | | | 1720 * | RSA | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Jacobs, Tiaan Benjamin | | | 1189 | RSA | 0.50 | 1 | -0.18 | 40 | -7.20 | | | Sathish, Abinavah | | | 1259 | RSA | 0.00 | 1 | -0.58 | 40 | -23.20 | | | Levitan, Judah Nathan | | | 1405 | RSA | 0.00 | 1 | -0.38 | 40 | -15.20 | | | Aldum, Rocco | | | 1208 | RSA | 0.50 | 1 | -0.15 | 40 | -6.00 | | | * 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) | | | | 2021 Etienne Lewis (U14 Open) | Pretoria | RSA | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1208 | 1320 | 4.00 | 4 | 1.41 | 40 | 56.40 | |
| | Boheim, Eugene | | | 1159 | RSA | 1.00 | 1 | 0.29 | 40 | 11.60 | | | Coetsee, Dewald | | | 1241 | RSA | 1.00 | 1 | 0.39 | 40 | 15.60 | | | Yang, Alex | | | 1128 | RSA | 1.00 | 1 | 0.25 | 40 | 10.00 | | | Reyneke, Luke | | | 1303 | RSA | 1.00 | 1 | 0.48 | 40 | 19.20 | |
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) | | |
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