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Individual Calculations November 2011 |
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| Ofek, Ariel Total change: -20.25 | |   |
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| 67th Ohio Chess Congress | Worthington, Ohio | USA | 2011-09-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2006 | 2045 | 2.50 | 5 | -0.26 | 30 | -7.80 | |
|  Casden, Alan | | | 2159 | USA | 0.00 | 1 | -0.34 | 30 | -10.20 | |  Friedman, David M | | | 1936 | USA | 0.50 | 1 | -0.15 | 30 | -4.50 | | | Song, Edward | | | 1920 | CAN | 0.00 | 1 | -0.67 | 30 | -20.10 | | | Basalla, Robert W | | | 1913 | USA | 1.00 | 1 | 0.32 | 30 | 9.60 | | | Whorton Jr, Les | | | 2104 | USA | 1.00 | 1 | 0.58 | 30 | 17.40 | |
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) | | | | 4th Annual Louisville Open | Louisville, Kentucky | USA | 2011-09-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 2045 | 1.50 | 2 | 0.33 | 30 | 9.90 | |
| | Anderson, Douglas | | | 1904 | USA | 0.50 | 1 | -0.19 | 30 | -5.70 | | | Ulrich, Thomas M | | | 2059 | USA | 1.00 | 1 | 0.52 | 30 | 15.60 | |
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) | | | NOTE: K factor changed | | Mulligan Masters and Experts IV | Wothington, Ohio | USA | 2011-10-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2047 | 2045 | 0.00 | 3 | -1.49 | 15 | -22.35 | |
| | Cao, Kevin Y. | | | 2120 | USA | 0.00 | 1 | -0.40 | 15 | -6.00 | | | Cooklev, Steven | | | 2111 | USA | 0.00 | 1 | -0.41 | 15 | -6.15 | | | Tallo, Emily | | | 1909 | USA | 0.00 | 1 | -0.68 | 15 | -10.20 | |
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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