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Individual Calculations March 2015 |
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| Sadie, Johan Jacobus Hendrik Total change: -20.00 | |   |
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| Piet Robbertse Open Chess Tournament 2015 | Pretoria | RSA | 2015-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1840 | 1692 | 1.50 | 6 | -0.50 | 40 | -20.00 | |
|  Wilken, Justin | | | 1991 | RSA | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Nel, Andre | | | 1940 | RSA | 0.00 | 1 | -0.19 | 40 | -7.60 | |  Grobbelaar, Jacqui | | | 1509 | RSA | 0.50 | 1 | -0.24 | 40 | -9.60 | | | Marais, Daniel | | | 1638 | RSA | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Van Der Westhuizen, Willem | | | 2078 | RSA | 0.00 | 1 | -0.09 | 40 | -3.60 | | | Matseme, Tshepo | | | 1883 | RSA | 0.00 | 1 | -0.25 | 40 | -10.00 | |
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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