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Individual Calculations March 2010 |
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| Guevara, Robert N Total change: -1.20 | |   |
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| 2009 Queens Chess Club Championship | Jamaica, New York | USA | 2009-10-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2031 | 2090 | 2.00 | 5 | -0.89 | 15 | -13.35 | |
|  Felber, Joseph J | | | 2054 | USA | 0.00 | 1 | -0.55 | 15 | -8.25 | | | Cimafranca, Edgar | | | 2081 | USA | 1.00 | 1 | 0.49 | 15 | 7.35 | |  Arluck, William S | | | 2030 | USA | 0.00 | 1 | -0.58 | 15 | -8.70 | | | Muwwakkil, Mulazim | | | 1937 | USA | 0.00 | 1 | -0.70 | 15 | -10.50 | | | Drobbin, Mitchell | | | 2054 | USA | 1.00 | 1 | 0.45 | 15 | 6.75 | |
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) | | | | 2010 Happy New Year Open | New york, New York | USA | 2010-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2266 | 2085 | 0.50 | 3 | -0.35 | 15 | -5.25 | |
| | Bonin, Jay | m | | 2346 | USA | 0.50 | 1 | 0.32 | 15 | 4.80 | | | Sarkar, Justin | m | | 2378 | USA | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Barsky, Sam | | | 2073 | USA | 0.00 | 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) | | | | 42nd Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2010-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2166 | 2085 | 4.00 | 7 | 1.16 | 15 | 17.40 | |
| | Ippolito, Dean J | m | | 2447 | USA | 0.00 | 1 | -0.10 | 15 | -1.50 | | | Yagiz, Bora | | | 1917 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Zimmer, Ralph P | f | | 2245 | USA | 1.00 | 1 | 0.71 | 15 | 10.65 | | | Zenyuk, Iryna | c | wm | 2255 | USA | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Rabin, Evan Z | | | 2021 | USA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Strenzwilk, Denis | | | 2028 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Adu, Oladapo Oluto | m | | 2248 | NGR | 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) | | |
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