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Individual Calculations June 2015 |
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| Grobbelaar, Jacqui Total change: 8.80 | |   |
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| 2015 USSA Closed Chess Championship (Women) | Johannesburg | RSA | 2015-04-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1607 | 1532 | 1.00 | 4 | -0.59 | 20 | -11.80 | |
|  Tlale, Seadion | | | 1532 | RSA | 0.50 | 1 | 0.00 | 20 | 0.00 | |  February, Jesse Nikki | | | 1680 | RSA | 0.00 | 1 | -0.30 | 20 | -6.00 | | | Caeser, Chante | | | 1608 | RSA | 0.50 | 1 | 0.10 | 20 | 2.00 | | | Voges, Rachelle Mari | | wc | 1609 | RSA | 0.00 | 1 | -0.39 | 20 | -7.80 | |
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) | | | | 2015 Capablanca Chess Tournament (Prestige F) | Pretoria | RSA | 2015-04-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1521 | 1532 | 4.50 | 7 | 1.03 | 20 | 20.60 | |
| | Latela, Kananelo | | | 1580 | LES | 1.00 | 1 | 0.57 | 20 | 11.40 | | | Van Der Westhuizen, Donald | | | 1623 | RSA | 0.50 | 1 | 0.12 | 20 | 2.40 | | | Varden, Trevelyn | f | | 1646 | RSA | 0.00 | 1 | -0.34 | 20 | -6.80 | | | Lekau, Ramokotjo | | | 1564 | LES | 0.00 | 1 | -0.46 | 20 | -9.20 | | | Odendaal, Ruben Lourens | | | 1553 | RSA | 1.00 | 1 | 0.53 | 20 | 10.60 | | | Rex, Ernst | | | 1552 | RSA | 1.00 | 1 | 0.53 | 20 | 10.60 | | | Dlamini, Vukani | | | 1132 * | SWZ | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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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