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Individual Calculations September 2009 |
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| Van Der Nat, Nicholas P. Total change: -2.40 | |   |
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| South African Open Chess Championship | Cape Town | RSA | 2009-07-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2181 | 2274 | 3.50 | 6 | -0.16 | 15 | -2.40 | |
|  Jones, Gawain | g | | 2554 | ENG | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Louvrier Saint-Mary, Jean-Roger | | | 2017 | FRA | 1.00 | 1 | 0.18 | 15 | 2.70 | |  Klaasen, Calvin J. | | | 2072 | RSA | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Simutowe, Amon | g | | 2481 | ZAM | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Van Rensburg, Ryan P. | | | 1976 | RSA | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Weideman, Hendrik J. | | | 1987 | RSA | 1.00 | 1 | 0.16 | 15 | 2.40 | |
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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