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Individual Calculations March 2015 |
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| Bornheim, Craig Total change: 19.00 | |   |
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| Piet Robbertse Open Chess Tournament 2015 | Pretoria | RSA | 2015-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2120 | 1992 | 2.00 | 3 | 0.95 | 20 | 19.00 | |
|  Chettiar, Evasan | | | 1886 | RSA | 1.00 | 1 | 0.36 | 20 | 7.20 | |  Makoto, Rodwell | m | | 2327 | ZIM | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Masango, Spencer | | | 2146 | ZIM | 1.00 | 1 | 0.71 | 20 | 14.20 | |
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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