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Individual Calculations June 2013 |
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| Chaka, Jona Total change: -27.30 | |   |
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| Zone 4.3 Individual Chess Championships 2013-Open Section | Gaborone | BOT | 2013-05-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2145 | 2175 | 2.50 | 8 | -1.82 | 15 | -27.30 | |
|  Gumpo, Thabo | c | | 2025 | BOT | 0.50 | 1 | -0.20 | 15 | -3.00 | |  Solomons, Deon | c | | 2169 | RSA | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Tangani, Goabaone | | | 1985 | BOT | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Oatlhotse, Providence | m | | 2227 | BOT | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Makoto, Rodwell | | | 2295 | ZIM | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Klaasen, Calvin Jong | | | 2131 | RSA | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Olebile, Thato | | | 2086 | BOT | 0.00 | 1 | -0.62 | 15 | -9.30 | | | Njobvu, Ignatius | f | | 2239 | BOT | 0.50 | 1 | 0.09 | 15 | 1.35 | |
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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