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Individual Calculations September 2012 |
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| Meintjes, Jacques Total change: -3.15 | |   |
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| South African Open Chess Championships 2012 | Cape Town | RSA | 2012-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1642 | 2042 | 1.00 | 1 | 0.08 | 15 | 1.20 | |
|  Govindasamy, Seshni | | | 1642 * | RSA | 1.00 | 1 | 0.08 | 15 | 1.20 | | | * 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) | | | | Gauteng North Closed 2012 | Pretoria | RSA | 2012-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1978 | 2016 | 3.00 | 6 | -0.29 | 15 | -4.35 | |
| | Nelson, Jaco | | | 2073 | RSA | 1.00 | 1 | 0.58 | 15 | 8.70 | |  Mendelsohn, David C | | | 1950 | RSA | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Goosen, Anton | c | | 2093 | RSA | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Ponelis, Albert A | | | 1933 | RSA | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Hoek, Cornelis | | | 1816 | RSA | 0.50 | 1 | -0.26 | 15 | -3.90 | | | Wilken, Justin | | | 2003 | RSA | 0.50 | 1 | -0.02 | 15 | -0.30 | |
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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