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Individual Calculations July 2012 |
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| Song, Edward Total change: 37.50 | |   |
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| 21st Annual Chicago Open - U2300 Section | Wheeling, Illinois | USA | 2012-05-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2103 | 2002 | 3.50 | 5 | 1.64 | 15 | 24.60 | |
|  Lein, Anatoly | g | | 2262 | USA | 1.00 | 1 | 0.82 | 15 | 12.30 | | | Chow, Albert C | f | | 2187 | USA | 1.00 | 1 | 0.74 | 15 | 11.10 | |  Tang, Andrew | | | 1980 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Tutush, Dusan | | | 1978 | USA | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Sohal, Tanraj S | | | 2106 | CAN | 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) | | | | 2012 National Open - U2200 Section | Las Vegas, Nevada | USA | 2012-06-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1966 | 2002 | 2.50 | 3 | 0.86 | 15 | 12.90 | |
| | Harmon-Vellotti, Carl | | | 1836 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Hough, Randall D | | | 1949 | USA | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Yim, Tony Sung | | | 2112 | KOR | 0.50 | 1 | 0.15 | 15 | 2.25 | |
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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