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Individual Calculations January 2012 |
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| Kamara, Abdul Total change: -37.05 | |   |
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| Botswana Junior Closed 2011-Boys | Gaborone | BOT | 2011-11-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1929 | 1919 | 1.50 | 5 | -0.93 | 30 | -27.90 | |
|  Kokome , Oaitse | c | | 1945 | BOT | 0.50 | 1 | 0.04 | 30 | 1.20 | |  Olebile , Thato | | | 2011 | BOT | 0.00 | 1 | -0.37 | 30 | -11.10 | | | Neo, Neo | | | 1936 | BOT | 0.50 | 1 | 0.02 | 30 | 0.60 | | | Gumpo, Thabo | c | | 1965 | BOT | 0.50 | 1 | 0.06 | 30 | 1.80 | | | Olesitswe, Elias | | | 1788 | BOT | 0.00 | 1 | -0.68 | 30 | -20.40 | |
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) | | | NOTE: K factor changed | | 2011 African Youth Chess Championship, Under 18 Boys | Lusaka | ZAM | 2011-12-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1877 | 1919 | 0.50 | 2 | -0.61 | 15 | -9.15 | |
| | Bornheim, Craig | | | 1909 | RSA | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Chandna , Shubham | | | 1844 | BOT | 0.50 | 1 | -0.10 | 15 | -1.50 | |
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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