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Individual Calculations September 2022 |
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| Vorster, Stephanus Total change: 34.00 | |   |
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| JMC Women's Day FIDE Open | Johannesburg | RSA | 2022-08-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1572 | 1650 | 4.00 | 6 | 0.47 | 20 | 9.40 | |
|  Yang, Alex | | | 1250 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Jones, William | | | 1233 | RSA | 1.00 | 1 | 0.07 | 20 | 1.40 | | | Mlahleki, Vusimuzi | | | 1948 | RSA | 0.00 | 1 | -0.15 | 20 | -3.00 | | | Laureles, Raymundo | | | 1545 | RSA | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Sathish, Abinavah | | | 1389 | RSA | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Khumalo, Keith | c | | 2066 | RSA | 0.00 | 1 | -0.07 | 20 | -1.40 | | | * 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) | | | | 2022 Alekhine FIDE Rated Open Tournament (A) | Pretoria | RSA | 2022-08-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1707 | 1650 | 2.00 | 5 | -0.35 | 20 | -7.00 | |
| | Jacobs, Calvin Nicholas | | | 1371 | RSA | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Mabusela, Johannes Manyedi | m | | 2203 | RSA | 0.00 | 1 | -0.03 | 20 | -0.60 | | | Lekalakala, Ernest | | | 1854 | RSA | 0.00 | 1 | -0.24 | 20 | -4.80 | | | Smit, Yoshua | | | 1410 | RSA | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Nhamuave, Eleazar | | | 1696 | RSA | 0.00 | 1 | -0.44 | 20 | -8.80 | |
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) | | | | Chess Power House 2nd RR (A) | Johannesburg | RSA | 2022-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1914 | 1650 | 2.50 | 5 | 1.58 | 20 | 31.60 | |
| | Lekgau, Mothupi | | | 1936 | RSA | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Horne, Andrew H | | | 1857 | RSA | 1.00 | 1 | 0.77 | 20 | 15.40 | | | Bornheim, Craig | c | | 2004 | RSA | 0.50 | 1 | 0.39 | 20 | 7.80 | | | Mpya, Tshediso M | | | 1825 | RSA | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Mlahleki, Vusimuzi | | | 1948 | RSA | 0.50 | 1 | 0.35 | 20 | 7.00 | |
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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