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Individual Calculations September 2011 |
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| Qin, Ziyi Total change: 17.70 | |   |
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| 2011 North American Youth Championship - U16 Open | Tarrytown, New York | USA | 2011-06-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2043 | 2159 | 2.50 | 4 | -0.07 | 15 | -1.05 | |
|  Kalaydina, Regina-Veronicka | | | 1842 | CAN | 1.00 | 1 | 0.13 | 15 | 1.95 | |  Sen, Samir | | | 2133 | USA | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Chakraborty, Dipro | | | 2150 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Hughes, John | | | 2048 | USA | 0.50 | 1 | -0.15 | 15 | -2.25 | |
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 Eastern Ontario Open | Ottawa, Ontario | CAN | 2011-06-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2133 | 2159 | 4.00 | 5 | 1.25 | 15 | 18.75 | |
| | Eng, Randel | | | 1964 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Sambuev, Bator | g | | 2513 | CAN | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Gagnon, Serge | | | 2109 | CAN | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Upper, John | | | 1987 | CAN | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Humphreys, Michael | | | 2091 | CAN | 1.00 | 1 | 0.41 | 15 | 6.15 | |
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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