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Individual Calculations September 2011 |
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| Kogen, Jonathan S Total change: 65.85 | |   |
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| 39th Annual World Open - U2400 Section | Philadelphia, Pennsylvania | USA | 2011-06-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2225 | 1998 | 5.00 | 9 | 3.03 | 30 | 90.90 | |
|  Reverby, Miro | | | 2143 | USA | 0.00 | 1 | -0.31 | 30 | -9.30 | |  Alvarez, Ernesto | | | 2225 | USA | 1.00 | 1 | 0.79 | 30 | 23.70 | | | Karklins, Andrew | f | | 2215 | USA | 1.00 | 1 | 0.78 | 30 | 23.40 | | | Lein, Anatoly | g | | 2274 | USA | 0.50 | 1 | 0.33 | 30 | 9.90 | | | Martchenko, Alexander | | | 2227 | CAN | 1.00 | 1 | 0.79 | 30 | 23.70 | | | Kretchetov, Alexander | f | | 2344 | RUS | 0.00 | 1 | -0.11 | 30 | -3.30 | | | Fikiet, Alex M | | | 2233 | USA | 0.00 | 1 | -0.21 | 30 | -6.30 | | | Levi, Ariel S | | | 2127 | USA | 1.00 | 1 | 0.67 | 30 | 20.10 | | | Yanayt, Eugene | f | | 2240 | USA | 0.50 | 1 | 0.30 | 30 | 9.00 | |
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 Chicago Class | Wheeling, Illinois | USA | 2011-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2109 | 2037 | 1.00 | 5 | -1.01 | 30 | -30.30 | |
| | Ding, Jialin | | | 2178 | USA | 0.00 | 1 | -0.31 | 30 | -9.30 | | | Schmakel, Sam A | | | 2064 | USA | 0.50 | 1 | 0.04 | 30 | 1.20 | | | Stamnov, Aleksanda | f | | 2178 | MKD | 0.00 | 1 | -0.31 | 30 | -9.30 | | | Fellman, Mike | | | 2001 | USA | 0.50 | 1 | -0.05 | 30 | -1.50 | | | Smarty, Sylvester | | | 2122 | USA | 0.00 | 1 | -0.38 | 30 | -11.40 | |
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) | | | NOTE: K factor changed | | 2011 Cleveland Open | Cleveland, Ohio | USA | 2011-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2093 | 2037 | 0.00 | 1 | -0.42 | 15 | -6.30 | |
| | Murthy, Pappu | | | 2093 | USA | 0.00 | 1 | -0.42 | 15 | -6.30 | |
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) | | | NOTE: K factor changed | | 6th Annual Indianapolis Open | Indianapolis, Indiana | USA | 2011-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2186 | 2037 | 2.00 | 4 | 0.77 | 15 | 11.55 | |
| | Adams, Nicholas | | | 2240 | USA | 1.00 | 1 | 0.76 | 15 | 11.40 | | | Homa, Seth | f | | 2276 | USA | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Stamnov, Aleksanda | f | | 2178 | MKD | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Ofek, Ariel | | | 2051 | USA | 1.00 | 1 | 0.52 | 15 | 7.80 | |
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) | | |
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