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Individual Calculations September 2011 |
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| Patterson, Roger Total change: -33.90 | |   |
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| 48th Canadian Open Chess Championship 2011 | Toronto, Ontario | CAN | 2011-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2101 | 2141 | 2.50 | 7 | -1.34 | 15 | -20.10 | |
|  Macak, Stefan | m | | 2391 | SVK | 0.50 | 1 | 0.31 | 15 | 4.65 | |  Zenyuk, Iryna | c | wm | 2222 | USA | 0.00 | 1 | -0.39 | 15 | -5.85 | | | Baumgartner, Christopher | | | 1864 | USA | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Wang, Richard | | | 2240 | CAN | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Roy, Myriam | | | 1935 | CAN | 0.00 | 1 | -0.76 | 15 | -11.40 | | | Roller, Robert | | | 2057 | CAN | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Cohen, Lawrence S | | | 2001 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | |
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) | | | | Portland Chess Club Centennial Open | Portland, Oregon | USA | 2011-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2036 | 2141 | 1.00 | 3 | -0.92 | 15 | -13.80 | |
| | Chan, James | | | 1988 | CAN | 0.00 | 1 | -0.70 | 15 | -10.50 | | | Aiello, Roberto | | | 1992 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Sen, Samir | | | 2128 | USA | 0.50 | 1 | -0.02 | 15 | -0.30 | |
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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