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Individual Calculations January 2019 |
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| Modirwa, Ofentse Total change: -17.60 | |   |
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| 2018 South African Junion Chess Championships (u18B) | Boksburg | RSA | 2018-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1314 | 1302 | 0.50 | 3 | -0.94 | 40 | -37.60 | |
|  De Wet, Ryan | | | 1356 | RSA | 0.50 | 1 | 0.08 | 40 | 3.20 | | | Bekker, Gerhardus Daniel | | | 1338 | RSA | 0.00 | 1 | -0.45 | 40 | -18.00 | |  Van Der Westhuizen, Petrus | | | 1249 | RSA | 0.00 | 1 | -0.57 | 40 | -22.80 | |
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 (U18 Open) | Boksburg | RSA | 2018-12-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1438 | 1302 | 1.50 | 3 | 0.50 | 40 | 20.00 | |
| | Cruywagen, Dewan | | | 1347 | RSA | 0.50 | 1 | 0.06 | 40 | 2.40 | | | Willenberg, Tristan | | | 1358 | RSA | 0.50 | 1 | 0.08 | 40 | 3.20 | | | Moloto, Nnani | | | 1610 | RSA | 0.50 | 1 | 0.36 | 40 | 14.40 | |
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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