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Individual Calculations January 2011 |
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| Colas, Joshua Total change: -35.35 | |   |
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| World Youth Chess Championships 2010 - Open under 12 | Porto Carras, Chalkidiki - Greece | GRE | 2010-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1921 | 2068 | 5.50 | 10 | -1.27 | 25 | -31.75 | |
|  Zaman, Daniel | | | 1707 | BLR | 0.50 | 1 | -0.40 | 25 | -10.00 | |  Hadzialic, Benjamin | | | 1711 | BIH | 1.00 | 1 | 0.11 | 25 | 2.75 | | | Markoja, Boris | | | 1793 | SLO | 1.00 | 1 | 0.17 | 25 | 4.25 | | | Savenkov, Konstantin | | | 1943 | RUS | 0.00 | 1 | -0.67 | 25 | -16.75 | | | Rydl, Jiri | | | 1906 | CZE | 1.00 | 1 | 0.29 | 25 | 7.25 | | | Gajek, Radoslaw | | | 1930 | POL | 1.00 | 1 | 0.31 | 25 | 7.75 | | | Wei, Yi | | | 2238 | CHN | 0.00 | 1 | -0.28 | 25 | -7.00 | | | Wang, Yi Ye | c | | 2011 | CHN | 0.00 | 1 | -0.58 | 25 | -14.50 | | | Zamengo, Fulvio | | | 1936 | ITA | 1.00 | 1 | 0.32 | 25 | 8.00 | | | Xu, Yi | c | | 2039 | CHN | 0.00 | 1 | -0.54 | 25 | -13.50 | |
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) | | | NOTE: K factor changed | | 41st Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2010-11-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2195 | 2084 | 0.50 | 2 | -0.24 | 15 | -3.60 | |
| | Goletiani, Rusudan | m | wg | 2366 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Black Jr, James A | | | 2023 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | |
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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