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Individual Calculations January 2019 |
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| Masala, Iphazha Total change: 53.60 | |   |
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| 2018 Botswana International Junior Open Chess Championships_ U11 Boys | GABORONE | BOT | 2018-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1450 | 1477 | 2.00 | 2 | 0.92 | 40 | 36.80 | |
|  Mawire, Tawananyasha | | | 1422 | ZIM | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Ofile, Masilo | | | 1477 | BOT | 1.00 | 1 | 0.50 | 40 | 20.00 | |
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 African Schools Individual Chess Championships (U11 and U13 Boys) | Waterberg | RSA | 2018-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1530 | 1477 | 3.00 | 6 | 0.42 | 40 | 16.80 | |
|  Oosthuizen, Michal Jacobus | | | 1558 | RSA | 0.00 | 1 | -0.39 | 40 | -15.60 | | | Costa, Bruno | | | 1696 | ANG | 1.00 | 1 | 0.78 | 40 | 31.20 | | | Marape, Naledi | | wf | 1646 | BOT | 0.50 | 1 | 0.22 | 40 | 8.80 | | | Lefyedi, Thatego | | | 1281 | RSA | 0.00 | 1 | -0.75 | 40 | -30.00 | | | Ofile, Masilo | | | 1477 | BOT | 0.50 | 1 | 0.00 | 40 | 0.00 | | | Baltazar, Carlos | | | 1521 | ANG | 1.00 | 1 | 0.56 | 40 | 22.40 | |
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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