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Individual Calculations January 2012 |
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| Black, James A Total change: 30.75 | |   |
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| 2011 Marshall Chess Club Championship | New York, New York | USA | 2011-10-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2128 | 2132 | 5.50 | 8 | 1.51 | 15 | 22.65 | |
|  Regam, Jessica | | | 1811 | USA | 1.00 | 1 | 0.13 | 15 | 1.95 | |  Bonin, Jay | m | | 2325 | USA | 0.50 | 1 | 0.25 | 15 | 3.75 | | | Kopiecki, Edward P | | | 2015 | USA | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Wu, Christopher | | | 2059 | USA | 0.00 | 1 | -0.60 | 15 | -9.00 | | | Williams, Justus D | | | 2186 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Resika, Nathan | f | | 2130 | USA | 1.00 | 1 | 0.50 | 15 | 7.50 | | | Ostrovskiy, Aleksandr | f | | 2308 | USA | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Treger, Yefim | | | 2191 | USA | 1.00 | 1 | 0.58 | 15 | 8.70 | |
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) | | | | 2011 Marshall November Grand Prix | New York, New York | USA | 2011-11-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2171 | 2132 | 2.50 | 3 | 1.10 | 15 | 16.50 | |
| | Margiotta, Jason J | | | 1988 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Vulis, Daniel | | | 2082 | USA | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Kekelidze, Mikheil | g | | 2443 | GEO | 0.50 | 1 | 0.36 | 15 | 5.40 | |
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) | | | | World Youth Chess Championship - U 14 Open | Caldas Novas/GO | BRA | 2011-11-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2020 | 2132 | 3.50 | 8 | -1.57 | 15 | -23.55 | |
| | Nikolov, Rumen | | | 1916 | BUL | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Vazquez, Guillermo | f | | 2309 | PAR | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Stone, Ronnie Frank Pires | | | 1943 | BRA | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Cuellar, Diego | f | | 2179 | PER | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Foo, William J | | | 1925 | ENG | 0.50 | 1 | -0.27 | 15 | -4.05 | | | Cruz, Arquias Sofocles Guimaraes | | | 1811 | BRA | 1.00 | 1 | 0.13 | 15 | 1.95 | | | Ruiz C, Joshua D | f | | 2241 | COL | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Munkhbayar, Gijir | | | 1839 | MGL | 0.00 | 1 | -0.85 | 15 | -12.75 | |
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) | | | | 2011 Marshall December Grand Prix | New York, New York | USA | 2011-12-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2136 | 2132 | 2.00 | 2 | 1.01 | 15 | 15.15 | |
| | Gutierrez, Michael | | | 1878 | USA | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Sarkar, Justin | m | | 2394 | USA | 1.00 | 1 | 0.82 | 15 | 12.30 | |
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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