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Individual Calculations January 2024 |
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| Schwartz, Michael Total change: -119.20 | |   |
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| Africawide Chess Championship 2023 (Open) | Johannesburg | RSA | 2023-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1748 | 1369 | 0.00 | 1 | -0.09 | 40 | -3.60 | |
|  Ikageng, Mabengane | | | 1748 | BOT | 0.00 | 1 | -0.09 | 40 | -3.60 | |
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) | | | | 2023 BMI Lesotho Open CC- Prestige | Maseru | LES | 2023-11-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1409 | 1369 | 1.00 | 5 | -1.28 | 40 | -51.20 | |
| | Magagula, Raymond | | | 1595 | RSA | 0.00 | 1 | -0.21 | 40 | -8.40 | | | Motsamai, Bokang | | | 1592 | LES | 0.00 | 1 | -0.22 | 40 | -8.80 | |  Tjamela, Tsepo | | | 1282 | LES | 0.50 | 1 | -0.12 | 40 | -4.80 | | | Makhele, Palamo | | | 1320 | LES | 0.00 | 1 | -0.57 | 40 | -22.80 | | | Mdluli, Meluleki | | | 1255 | SWZ | 0.50 | 1 | -0.16 | 40 | -6.40 | |
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) | | | | Kraaifontein Open 2023 (Advanced) | Cape Town | RSA | 2023-12-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1245 | 1359 | 1.00 | 4 | -1.61 | 40 | -64.40 | |
| | Swarts, Paul | | | 1245 | RSA | 0.00 | 1 | -0.66 | 40 | -26.40 | | | Moollajee, Rehaan | | | 1398 | RSA | 0.00 | 1 | -0.45 | 40 | -18.00 | | | Solomon, William | | | 1158 | RSA | 0.50 | 1 | -0.26 | 40 | -10.40 | | | Maruma, Katlego | | | 1178 | RSA | 0.50 | 1 | -0.24 | 40 | -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) | | |
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