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Individual Calculations January 2019 |
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| Ngonga, Bornface Total change: -21.20 | |   |
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| Bank of Zambia Christmas Open Chess Tournament | Ndola | ZAM | 2018-12-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1920 | 2131 | 3.50 | 6 | -1.06 | 20 | -21.20 | |
|  Keagan, Lwandamina | | | 1910 | ZAM | 1.00 | 1 | 0.22 | 20 | 4.40 | |  Chiumya, Brighton | | | 1975 | ZAM | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Zulu, Reuben | | | 1754 | ZAM | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Elliot, Blessings Zulu | | | 1926 | ZAM | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Mukosha, Joshua | | | 2010 | ZAM | 0.00 | 1 | -0.66 | 20 | -13.20 | | | Mutambo, Webster | | | 1943 | ZAM | 0.00 | 1 | -0.74 | 20 | -14.80 | |
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) | | |
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