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Individual Calculations November 2009 |
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| Privman, Boris Total change: 3.30 | |   |
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| 41st Annual Atlantic Open | Washington DC | USA | 2009-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2256 | 2150 | 2.00 | 4 | 0.55 | 15 | 8.25 | |
|  Kaufman, Raymond | m | | 2265 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | |  Enkhbat, Tegshsure | m | | 2388 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Beckman, Thomas J | | | 2058 | USA | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Uesugi, Shinsaku | f | | 2314 | JPN | 0.50 | 1 | 0.22 | 15 | 3.30 | |
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) | | | | 2009 New Jersey State Championship | Somerset, New Jersey | USA | 2009-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1937 | 2141 | 0.50 | 1 | -0.26 | 15 | -3.90 | |
| | Robinson, Darrian | | | 1937 | USA | 0.50 | 1 | -0.26 | 15 | -3.90 | |
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) | | | | New York October Open | New York, New York | USA | 2009-10-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2092 | 2141 | 0.50 | 1 | -0.07 | 15 | -1.05 | |
| | Vulis, Daniel | | | 2092 | USA | 0.50 | 1 | -0.07 | 15 | -1.05 | |
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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