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Individual Calculations April 2018 |
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| Silva, David Total change: -23.40 | |   |
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| Boardwalk Pearson High School Chess Tournament 2018 (Prestige) | Port Elizabeth | RSA | 2018-03-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2291 | 2279 | 4.00 | 9 | -0.35 | 20 | -7.00 | |
|  Oatlhotse, Providence | m | | 2173 | BOT | 0.00 | 1 | -0.64 | 20 | -12.80 | | | Paiva, Donaldo | c | | 2196 | MOZ | 1.00 | 1 | 0.39 | 20 | 7.80 | |  Cawdery, Daniel | m | | 2428 | RSA | 0.50 | 1 | 0.20 | 20 | 4.00 | | | Grover, Sahaj | g | | 2484 | IND | 0.00 | 1 | -0.24 | 20 | -4.80 | | | Klaasen, Calvin John | f | | 2320 | RSA | 0.50 | 1 | 0.06 | 20 | 1.20 | | | Luanja, Geoffrey | | | 2300 | ZAM | 0.50 | 1 | 0.03 | 20 | 0.60 | | | Mwale, Joseph | c | | 2240 | MAW | 0.50 | 1 | -0.05 | 20 | -1.00 | | | Makoto, Rodwell | m | | 2349 | ZIM | 0.50 | 1 | 0.10 | 20 | 2.00 | | | Van Zyl-Rudd, Jack | f | | 2133 | RSA | 0.50 | 1 | -0.20 | 20 | -4.00 | |
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) | | | | Steinitz Cape Town International Chess Festival (Prestige) | Cape Town | RSA | 2018-03-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2027 | 2279 | 4.50 | 7 | -0.82 | 20 | -16.40 | |
| | Willenberg, Roland C. | | | 1879 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | De Jager, Luan | | | 1879 * | RSA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Willenberg, Athon | | | 1918 | RSA | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Kobese, Watu | m | | 2329 | RSA | 0.00 | 1 | -0.43 | 20 | -8.60 | | | Samuels, Ethan | | | 1879 * | RSA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Steel, Henry Robert | m | | 2414 | RSA | 0.00 | 1 | -0.32 | 20 | -6.40 | | | Latreche, Khadidja | | wm | 1889 | ALG | 1.00 | 1 | 0.09 | 20 | 1.80 | | | * 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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