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Individual Calculations September 2009 |
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| Ostrovskiy, Anatoly Total change: -6.00 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2042 | 1969 | 1.00 | 2 | 0.20 | 25 | 5.00 | |
|  Hellenschmidt, Andrew | | | 2024 | USA | 0.50 | 1 | 0.08 | 25 | 2.00 | | | Chipkin, Leonard B | | | 2059 | USA | 0.50 | 1 | 0.12 | 25 | 3.00 | |
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) | | | | Curacao Chess Festival 2009 | Curacao Netherlands Antilles | AHO | 2009-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1981 | 1969 | 2.00 | 5 | -0.44 | 25 | -11.00 | |
|  Suez-Panama, Gilles | | | 2122 | FRA | 0.00 | 1 | -0.30 | 25 | -7.50 | | | Pesqueira, Jose | | | 1979 | ARU | 0.00 | 1 | -0.49 | 25 | -12.25 | | | Zalm, Norman | | | 1861 | AHO | 1.00 | 1 | 0.35 | 25 | 8.75 | | | Richardson, Quirino | | | 1811 | AHO | 1.00 | 1 | 0.29 | 25 | 7.25 | | | Roose, Alex | | | 2131 | AHO | 0.00 | 1 | -0.29 | 25 | -7.25 | |
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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