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Individual Calculations July 2009 |
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| Gibbons, Robert Total change: -80.25 | |   |
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| Auckland Chess Centre Weekender | Auckland | NZL | 2009-03-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2030 | 2067 | 2.00 | 5 | -0.76 | 15 | -11.40 | |
|  Steadman, Michael | | | 2273 | NZL | 0.00 | 1 | -0.24 | 15 | -3.60 | |  Eade, Don | | | 1908 | NZL | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Wright, Caleb | | | 1935 | NZL | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Taylor, Richard | | | 1946 | NZL | 0.00 | 1 | -0.66 | 15 | -9.90 | | | Browne, Jeremy | | | 2090 | NZL | 0.00 | 1 | -0.47 | 15 | -7.05 | |
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) | | | | Doeberl Cup Premier | Canberra | AUS | 2009-04-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1980 | 2067 | 2.50 | 8 | -2.50 | 15 | -37.50 | |
| | Johansen, Darryl K. | g | | 2417 | AUS | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Tan, Justin | | | 1885 | AUS | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Guo, Emma | | | 1845 | AUS | 0.00 | 1 | -0.78 | 15 | -11.70 | | | Tsagarakis, Angelo | | | 1919 | AUS | 0.00 | 1 | -0.70 | 15 | -10.50 | | | Holland, Dennis | | | 1963 | AUS | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Kordahi, Nicholas | | | 1913 | AUS | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Lee, T H Bryan | | | 1918 | HKG | 0.00 | 1 | -0.70 | 15 | -10.50 | | | Flitney, Adrian | | | 1980 | AUS | 0.50 | 1 | -0.12 | 15 | -1.80 | |
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) | | | | Sydney International Open | Sydney | AUS | 2009-04-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1944 | 2067 | 4.00 | 9 | -1.96 | 15 | -29.40 | |
| | Jones, Gawain C B | g | | 2417 | ENG | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Setiabudi, Allen | | | 1843 | AUS | 0.00 | 1 | -0.78 | 15 | -11.70 | | | Encel, Benjamin | | | 1838 | AUS | 0.00 | 1 | -0.79 | 15 | -11.85 | | | Ruan, Harry | | | 1815 | AUS | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Lau, Joshua | | | 1862 | AUS | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Lester, George E | | | 1801 | AUS | 0.50 | 1 | -0.32 | 15 | -4.80 | | | Zulfic, Fedja | | | 1971 | AUS | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Holland, Dennis | | | 1963 | AUS | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Davis, Tony | | | 1983 | AUS | 0.50 | 1 | -0.12 | 15 | -1.80 | |
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 |
| 2052 | 2067 | 3.00 | 6 | -0.13 | 15 | -1.95 | |
| | Steadman, Michael | | | 2262 | NZL | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Ansell, Alan | | | 1986 | NZL | 1.00 | 1 | 0.39 | 15 | 5.85 | | | Shen, Daniel | | | 2137 | NZL | 0.00 | 1 | -0.40 | 15 | -6.00 | | | Wright, Caleb | | | 1925 | NZL | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Lynn, William | | | 1974 | NZL | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Bennett, Hilton | | | 2028 | NZL | 0.50 | 1 | -0.05 | 15 | -0.75 | |
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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