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Individual Calculations April 2018 |
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| Luanja, Geoffrey Total change: -24.20 | |   |
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| 2018 Waterkloof Open (Prestige) | Pretoria | RSA | 2018-03-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2070 | 2300 | 4.00 | 6 | -0.58 | 20 | -11.60 | |
|  Khumalo, Keith | | | 1914 | RSA | 0.50 | 1 | -0.41 | 20 | -8.20 | |  Mlahleki, Vusimuzi | | | 1925 | RSA | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Ovcina, Dennis | | | 2118 | RSA | 0.00 | 1 | -0.74 | 20 | -14.80 | | | Du Plessis, Heinco | | | 1998 | RSA | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Bezuidenhout, Roland | c | | 2118 | RSA | 1.00 | 1 | 0.26 | 20 | 5.20 | | | Makoto, Rodwell | m | | 2349 | ZIM | 0.50 | 1 | 0.07 | 20 | 1.40 | |
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) | | | | Boardwalk Pearson High School Chess Tournament 2018 (Prestige) | Port Elizabeth | RSA | 2018-03-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2289 | 2300 | 4.00 | 9 | -0.63 | 20 | -12.60 | |
| | Paiva, Donaldo | c | | 2196 | MOZ | 0.50 | 1 | -0.14 | 20 | -2.80 | | | Mwale, Joseph | c | | 2240 | MAW | 0.50 | 1 | -0.08 | 20 | -1.60 | | | Makoto, Rodwell | m | | 2349 | ZIM | 1.00 | 1 | 0.57 | 20 | 11.40 | | | Van Zyl-Rudd, Jack | f | | 2133 | RSA | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Oatlhotse, Providence | m | | 2173 | BOT | 0.00 | 1 | -0.67 | 20 | -13.40 | | | Silva, David | m | | 2279 | ANG | 0.50 | 1 | -0.03 | 20 | -0.60 | | | Cawdery, Daniel | m | | 2428 | RSA | 0.00 | 1 | -0.33 | 20 | -6.60 | | | Grover, Sahaj | g | | 2484 | IND | 0.00 | 1 | -0.26 | 20 | -5.20 | | | Klaasen, Calvin John | f | | 2320 | RSA | 1.00 | 1 | 0.53 | 20 | 10.60 | |
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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