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Individual Calculations January 2019 |
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| Petersen, John-Wayne Total change: 0.00 | |   |
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| 2018 African Schools Individual Chess Championships (U11 and U13 Boys) | Waterberg | RSA | 2018-12-05 |
| Rc | Ro | w | n | change | Rp | K | K*chg | Game |
| 1460 | 0 | 0.50 | 5 | 0.00 | 1094 | | 0.00 | |
|  Lefyedi, Thatego | | | 1281 | RSA | 0.00 | 1 | 0.00 | | 0.00 | |  Hayssan, Abdul Arnaldo Afu | | | 1198 | MOZ | 0.00 | 1 | 0.00 | | 0.00 | | | Costa, Bruno | | | 1696 | ANG | 0.00 | 1 | 0.00 | | 0.00 | | | Ofile, Masilo | | | 1477 | BOT | 0.50 | 1 | 0.00 | | 0.00 | | | Marape, Naledi | | wf | 1646 | BOT | 0.00 | 1 | 0.00 | | 0.00 | |
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) | | | | 2018 Wild Card Chess Championships (U14 Open) | Boksburg | RSA | 2018-12-21 |
| Rc | Ro | w | n | change | Rp | K | K*chg | Game |
| 1149 | 0 | 0.00 | 1 | 0.00 | 349 | | 0.00 | |
| | Manikwa, Ryan | | | 1149 | RSA | 0.00 | 1 | 0.00 | | 0.00 | |
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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