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Individual Calculations May 2011 |
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| Gu, Christopher Total change: 47.25 | |   |
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| 20th Annual Eastern Class Championships | Sturbridge, Massachusetts | USA | 2011-03-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2295 | 2180 | 2.00 | 3 | 0.95 | 25 | 23.75 | |
|  Castaneda, Nelson | f | | 2223 | USA | 1.00 | 1 | 0.56 | 25 | 14.00 | | | Mandizha, Farai | f | | 2416 | ZIM | 0.00 | 1 | -0.20 | 25 | -5.00 | |  Zenyuk, Iryna | c | wm | 2245 | USA | 1.00 | 1 | 0.59 | 25 | 14.75 | |
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) | | | | 2nd Annual Hartford Open | Windsor Locks, Connecticut | USA | 2011-04-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2335 | 2180 | 1.00 | 2 | 0.38 | 25 | 9.50 | |
| | Fikiet, Alex M | | | 2223 | USA | 1.00 | 1 | 0.56 | 25 | 14.00 | | | Hungaski, Robert A | m | | 2446 | USA | 0.00 | 1 | -0.18 | 25 | -4.50 | |
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) | | | | 2nd Annual Philadelphia Open | Philadelphia, Pennsylvania | USA | 2011-04-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2233 | 2180 | 4.50 | 9 | 0.56 | 25 | 14.00 | |
| | Mo, Kevin | | | 2064 | USA | 1.00 | 1 | 0.34 | 25 | 8.50 | | | Ludwig, Daniel J | m | | 2450 | USA | 0.00 | 1 | -0.17 | 25 | -4.25 | | | Ding, Andrew | | | 2005 | USA | 0.00 | 1 | -0.73 | 25 | -18.25 | | | Amarasinghe, Prashantha | | | 2027 | SRI | 1.00 | 1 | 0.30 | 25 | 7.50 | | | Tom, George | | | 2007 | USA | 1.00 | 1 | 0.27 | 25 | 6.75 | | | Mandizha, Farai | f | | 2416 | ZIM | 1.00 | 1 | 0.80 | 25 | 20.00 | | | Arnold, Marc T | m | | 2435 | USA | 0.50 | 1 | 0.31 | 25 | 7.75 | | | Mulyar, Michael A | m | | 2396 | USA | 0.00 | 1 | -0.22 | 25 | -5.50 | | | Bonin, Jay | m | | 2296 | USA | 0.00 | 1 | -0.34 | 25 | -8.50 | |
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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