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Individual Calculations January 2019 |
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| Oosthuizen, Michal Jacobus Total change: 118.00 | |   |
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| eSwatini Open | Mbabane | SWZ | 2018-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1957 | 1613 | 2.00 | 4 | 1.53 | 40 | 61.20 | |
|  Mahota Jr, Guimaraes Mendes | | | 1935 | MOZ | 0.50 | 1 | 0.37 | 40 | 14.80 | | | Goosen, Anton | c | | 1993 | RSA | 0.50 | 1 | 0.41 | 40 | 16.40 | | | Botao, Milton | | | 1886 | MOZ | 1.00 | 1 | 0.83 | 40 | 33.20 | |  Oatlhotse, Providence | m | | 2013 * | BOT | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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) | | | | 2018 African Schools Individual Chess Championships (U11 and U13 Boys) | Waterberg | RSA | 2018-12-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1470 | 1558 | 5.00 | 6 | 1.42 | 40 | 56.80 | |
| | Baltazar, Carlos | | | 1521 | ANG | 1.00 | 1 | 0.45 | 40 | 18.00 | | | Masala, Iphazha | c | | 1477 | BOT | 1.00 | 1 | 0.39 | 40 | 15.60 | | | Lefyedi, Thatego | | | 1281 | RSA | 1.00 | 1 | 0.17 | 40 | 6.80 | | | Costa, Bruno | | | 1696 | ANG | 0.50 | 1 | 0.19 | 40 | 7.60 | | | Marape, Naledi | | wf | 1646 | BOT | 0.50 | 1 | 0.12 | 40 | 4.80 | | | Hayssan, Abdul Arnaldo Afu | | | 1198 | MOZ | 1.00 | 1 | 0.10 | 40 | 4.00 | |
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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