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Individual Calculations January 2009 |
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| Iwu, Okechukwu A Total change: -11.85 | |   |
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| 17th Annual Midwest Class Championships | Wheeling, Illinois | USA | 2008-10-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2178 | 2210 | 1.00 | 4 | -1.17 | 15 | -17.55 | |
|  Stamnov, Alexander | f | | 2230 | MKD | 0.00 | 1 | -0.47 | 15 | -7.05 | |  Rosen, Eric S | | | 2118 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Betaneli, Alex | f | | 2318 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Cohen, Lawrence S | | | 2045 | USA | 0.00 | 1 | -0.72 | 15 | -10.80 | |
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) | | | | 17th Annual Kings Island Open | Mason, Ohio | USA | 2008-11-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2185 | 2210 | 2.00 | 3 | 0.38 | 15 | 5.70 | |
| | Amarasinghe, Prashantha N | | | 1926 | SRI | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Finegold, Benjamin | m | | 2527 | USA | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Magness, Trevor S | | | 2103 | USA | 1.00 | 1 | 0.35 | 15 | 5.25 | |
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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