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Individual Calculations June 2017 |
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| Chahrani, Ibrahim Total change: 6.60 | |   |
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| African Zonal 4.1 Open | Algiers | ALG | 2017-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2255 | 2224 | 4.50 | 9 | 0.33 | 20 | 6.60 | |
|  Mahdia, Farage | c | | 2002 | LBA | 1.00 | 1 | 0.22 | 20 | 4.40 | |  Arab, Adlane | m | | 2487 | ALG | 0.50 | 1 | 0.32 | 20 | 6.40 | | | Ben Nasser, Khaled | f | | 2231 | LBA | 0.50 | 1 | 0.01 | 20 | 0.20 | | | Haddouche, Mohamed | g | | 2490 | ALG | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Bengherabi, Khalil | f | | 2237 | ALG | 1.00 | 1 | 0.52 | 20 | 10.40 | | | Al-Zayat, Ahmed | f | | 2221 | LBA | 0.50 | 1 | 0.00 | 20 | 0.00 | | | Boudriga, Med Ali | m | | 2351 | TUN | 0.00 | 1 | -0.33 | 20 | -6.60 | | | Moulay, Mehdi | | | 2092 | ALG | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Talbi, Chafik | | | 2187 | ALG | 0.00 | 1 | -0.55 | 20 | -11.00 | |
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) | | |
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