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Individual Calculations January 2009 |
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| Qin, Joey Total change: 7.75 | |   |
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| World Youth Chess Championships 2008 - Open 12 | Vung Tau | VIE | 2008-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1835 | 2137 | 3.00 | 4 | -0.40 | 25 | -10.00 | |
|  Cox, Jan | | | 1870 | BEL | 1.00 | 1 | 0.18 | 25 | 4.50 | | | Ng, Isaac | | | 1787 | AUS | 1.00 | 1 | 0.11 | 25 | 2.75 | | | Olcum, Ahmet | | | 1896 | TUR | 0.00 | 1 | -0.80 | 25 | -20.00 | |  Pon, Matt | | | 1787 | RSA | 1.00 | 1 | 0.11 | 25 | 2.75 | |
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) | | | | 2008 National Capital Open | Ottawa | CAN | 2008-11-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2211 | 2137 | 2.00 | 3 | 0.71 | 25 | 17.75 | |
| | Doubleday, William G. | | | 2118 | CAN | 1.00 | 1 | 0.47 | 25 | 11.75 | | | Szalay, Karoly | | | 2027 | CAN | 1.00 | 1 | 0.35 | 25 | 8.75 | | | Sambuev, Bator | g | | 2487 | RUS | 0.00 | 1 | -0.11 | 25 | -2.75 | |
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) | | |
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