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Individual Calculations March 2015 |
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| Van Der Westhuizen, Willem Total change: -21.40 | |   |
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| Piet Robbertse Open Chess Tournament 2015 | Pretoria | RSA | 2015-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1852 | 2078 | 3.50 | 6 | -1.07 | 20 | -21.40 | |
|  Solo, Muzenda | | | 1821 | RSA | 0.50 | 1 | -0.32 | 20 | -6.40 | |  Hoek, Cornelis | | | 1900 | RSA | 0.00 | 1 | -0.73 | 20 | -14.60 | | | Du Plessis, Heinco | | | 2029 | RSA | 0.00 | 1 | -0.57 | 20 | -11.40 | | | Grobbelaar, Jacqui | | | 1678 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Sadie, Johan Jacobus Hendrik | | | 1692 | RSA | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Wilken, Justin | | | 1991 | RSA | 1.00 | 1 | 0.38 | 20 | 7.60 | | | * 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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