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Individual Calculations October 2008 |
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| De Waal, Ingrid Total change: 28.25 | |   |
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| South African Open Chess Championship 2008 | Centurion | RSA | 2008-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2096 | 1861 | 2.00 | 4 | 1.13 | 25 | 28.25 | |
|  Lebea, Botlhale E. | c | | 2100 | RSA | 1.00 | 1 | 0.80 | 25 | 20.00 | |  Greeff, Melissa | | wm | 1965 | RSA | 1.00 | 1 | 0.64 | 25 | 16.00 | | | Van Der Nat, Nicholas P. | f | | 2211 | RSA | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Jurgensen, Graham I. | c | | 2106 | RSA | 0.00 | 1 | -0.20 | 25 | -5.00 | |
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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