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Individual Calculations January 2019 |
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| Marape, Naledi Total change: -80.80 | |   |
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| FRANCISTOWN INTERNATIONAL OPEN- LADIES 2018 | FRANCISTOWN | BOT | 2018-11-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1562 | 1646 | 2.50 | 4 | 0.17 | 40 | 6.80 | |
|  Ramakele, Sthembiso | | | 1246 * | BOT | 1.00 | 1 | 0.08 | 40 | 3.20 | |  Charinda, Kudzanayi | | wc | 1717 | BOT | 0.00 | 1 | -0.40 | 40 | -16.00 | | | Ndachipiwa, Kgomotso | | | 1561 | BOT | 0.50 | 1 | -0.12 | 40 | -4.80 | | | Mudongo, Boikhutso | | wm | 1723 | BOT | 1.00 | 1 | 0.61 | 40 | 24.40 | | | * 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 Botswana International Junior Open Chess Championships_ U13 , U15 Girls | Gaborone | BOT | 2018-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1328 | 1646 | 4.00 | 6 | -1.13 | 40 | -45.20 | |
| | Nshikokola, Zangowanachipwila | | wc | 1246 * | ZAM | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Kaone, Mothako | | | 1246 * | BOT | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Gabatshwarwe, Refilwe | | wc | 1521 | BOT | 0.00 | 1 | -0.67 | 40 | -26.80 | | | Rankwane, Onneetse | | | 1347 | BOT | 0.50 | 1 | -0.35 | 40 | -14.00 | | | Mhate, Lame | | | 1297 | BOT | 0.50 | 1 | -0.39 | 40 | -15.60 | | | Bonno, Thandi | | | 1313 | BOT | 1.00 | 1 | 0.12 | 40 | 4.80 | | | * 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 |
| 1502 | 1646 | 3.00 | 6 | -1.06 | 40 | -42.40 | |
| | Ofile, Masilo | | | 1477 | BOT | 0.50 | 1 | -0.22 | 40 | -8.80 | | | Costa, Bruno | | | 1696 | ANG | 0.00 | 1 | -0.43 | 40 | -17.20 | | | Masala, Iphazha | c | | 1477 | BOT | 0.50 | 1 | -0.22 | 40 | -8.80 | | | Baltazar, Carlos | | | 1521 | ANG | 1.00 | 1 | 0.33 | 40 | 13.20 | | | Oosthuizen, Michal Jacobus | | | 1558 | RSA | 0.50 | 1 | -0.12 | 40 | -4.80 | | | Lefyedi, Thatego | | | 1281 | RSA | 0.50 | 1 | -0.40 | 40 | -16.00 | |
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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