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Individual Calculations July 2009 |
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| Jackson, L. Ross Total change: -15.45 | |   |
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| North Island Championship | Wellington | NZL | 2009-04-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1916 | 2011 | 2.00 | 4 | -0.47 | 15 | -7.05 | |
|  Burns, Christopher John | | | 2060 | NZL | 0.00 | 1 | -0.43 | 15 | -6.45 | |  Mitchell, Robert | | | 1732 | NZL | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Cruden, Neil | | | 1908 | NZL | 1.00 | 1 | 0.36 | 15 | 5.40 | | | King, Mathew | | | 1965 | NZL | 0.00 | 1 | -0.56 | 15 | -8.40 | |
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) | | | | 32nd Waitakere Open | Auckland | NZL | 2009-05-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1930 | 2011 | 2.50 | 5 | -0.56 | 15 | -8.40 | |
| | Wright, Caleb | | | 1925 | NZL | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Maroroa, Sue | | wf | 1894 | NZL | 0.50 | 1 | -0.16 | 15 | -2.40 | | | Gao, Judy | | wc | 1907 | NZL | 0.00 | 1 | -0.64 | 15 | -9.60 | | | Tanoi, Toleafoa E | | | 1937 | NZL | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Milligan, Helen | | wf | 1985 | NZL | 0.50 | 1 | -0.04 | 15 | -0.60 | |
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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