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Individual Calculations December 2017 |
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| Zwakala, Ntando Total change: 54.60 | |   |
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| Gauteng Chess League (1st Division) | Pretoria | RSA | 2017-10-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1893 | 2003 | 6.00 | 6 | 2.20 | 20 | 44.00 | |
|  Peretz, Leon | | | 1951 | RSA | 1.00 | 1 | 0.43 | 20 | 8.60 | |  Mkhonza, Mduduzi | | | 1728 | RSA | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Ovcina, Dennis | | | 2205 | RSA | 1.00 | 1 | 0.76 | 20 | 15.20 | | | Mbedza, Richard | c | | 1984 | RSA | 1.00 | 1 | 0.47 | 20 | 9.40 | | | Khumalo, Keith | | | 1790 | RSA | 1.00 | 1 | 0.23 | 20 | 4.60 | | | Kleyn, Andrew | | | 1699 | RSA | 1.00 | 1 | 0.14 | 20 | 2.80 | |
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) | | | | 2017 Gauteng North Open (A Section) | Pretoria | RSA | 2017-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1715 | 2003 | 4.50 | 5 | 0.53 | 20 | 10.60 | |
| | Lesuthu, Kali M. | | | 1603 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Grobbelaar, Jacqui | | | 1603 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Kheswa, Itumeleng | | | 1603 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Schoeman, Ewald | c | | 1603 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Mnguni, Jacob Dumisani | | | 2165 | RSA | 0.50 | 1 | 0.21 | 20 | 4.20 | | | * 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) | | |
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