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Individual Calculations April 2009 |
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| Rubenchik, Rodion Total change: -10.50 | |   |
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| 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2139 | 2309 | 0.00 | 1 | -0.72 | 15 | -10.80 | |
|  Ellenbogen, Michael J | | | 2139 | 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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2172 | 2309 | 2.00 | 3 | 0.02 | 15 | 0.30 | |
|  Kats, Alena | | | 1982 | USA | 1.00 | 1 | 0.13 | 15 | 1.95 | | | West, James R | | | 2193 | USA | 0.50 | 1 | -0.16 | 15 | -2.40 | | | Kopec, Danny | m | | 2342 | USA | 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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