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Individual Calculations July 2009 |
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| Cohen, Larry Total change: -10.50 | |   |
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| Midwest Chess | Chicago, Illinois | USA | 2009-03-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1957 | 2055 | 1.50 | 3 | -0.37 | 15 | -5.55 | |
|  Inumerable, Florentino | | | 2176 | USA | 0.00 | 1 | -0.34 | 15 | -5.10 | |  Baumgartner, Chris | | | 1875 | USA | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Kosteris, Dimitri | | | 1821 | USA | 0.50 | 1 | -0.29 | 15 | -4.35 | |
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) | | | | 27th North American FIDE Open | Stillwater, Oklahoma | USA | 2009-05-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2075 | 2039 | 1.50 | 4 | -0.33 | 15 | -4.95 | |
| | Kudrin, Sergey | g | | 2389 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Johnson, Chuck | | | 1702 | USA | 1.00 | 1 | 0.12 | 15 | 1.80 | | | Chua, Alex | | | 2276 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Glascock, Dennis G | | | 1933 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | |
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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