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Individual Calculations May 2017 |
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| Chumfwa, Kelvin Total change: -38.80 | |   |
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| 2017 Zambia Open Chess Championship - Masters Section | Lusaka | ZAM | 2017-03-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2147 | 2245 | 4.50 | 9 | -1.13 | 20 | -22.60 | |
|  Mulenga, Peter | | | 1928 | ZAM | 0.50 | 1 | -0.37 | 20 | -7.40 | |  Chumfwa, Stanley | m | | 2243 | ZAM | 0.50 | 1 | 0.00 | 20 | 0.00 | | | Mwali, Chitumbo | m | | 2291 | ZAM | 0.50 | 1 | 0.06 | 20 | 1.20 | | | Simulundu, Judah | | | 2115 | ZAM | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Kaoma, Micheal | | | 2173 | ZAM | 0.00 | 1 | -0.60 | 20 | -12.00 | | | Siuluta , Arnold | | | 2066 | ZAM | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Daka, Justin | | | 2164 | ZAM | 0.00 | 1 | -0.61 | 20 | -12.20 | | | Dimba, James | c | | 2078 | ZAM | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Bwalya, Gillan | m | | 2261 | ZAM | 0.00 | 1 | -0.48 | 20 | -9.60 | |
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) | | | | Zimbabwe International Easter Open | Harare | ZIM | 2017-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 2228 | 4.00 | 6 | -0.81 | 20 | -16.20 | |
| | Sibanda, Castro | | | 2027 | ZIM | 0.50 | 1 | -0.26 | 20 | -5.20 | | | Mandeya, Hamilton | | | 1934 | ZIM | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Ncube, Sifiso | | | 1890 | ZIM | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Jemusse, Zhemba | | | 2001 | ZIM | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Sibanda, Kudakwashe | | | 2108 | ZIM | 0.50 | 1 | -0.16 | 20 | -3.20 | | | Maketo, Albert | | | 1911 | ZIM | 1.00 | 1 | 0.13 | 20 | 2.60 | |
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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