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Individual Calculations April 2009 |
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| Grigoriadis, Mihail Total change: 20.55 | |   |
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| 2009 Indiv. Youth Champ. of Attica - Boys U 12 | Nikea - Athens | GRE | 2008-12-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1670 | 1628 | 2.50 | 4 | 0.72 | 25 | 18.00 | |
|  Poulopoulos, Ioannis | | | 1757 | GRE | 1.00 | 1 | 0.67 | 25 | 16.75 | |  Papadopoulos, Georgios | | | 1648 | GRE | 1.00 | 1 | 0.53 | 25 | 13.25 | | | Stathopoulos, Ioannis | | | 1740 | GRE | 0.00 | 1 | -0.35 | 25 | -8.75 | | | Sidiropoulos, Nikolaos | | | 1533 | GRE | 0.50 | 1 | -0.13 | 25 | -3.25 | |
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) | | | NOTE: K factor changed | | 2009 Attica teams Ch. B div. stage 2 - Group 1 | Attica | GRE | 2009-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1819 | 1696 | 0.50 | 1 | 0.17 | 15 | 2.55 | |
| | Kostas, Alexandros | | | 1819 | GRE | 0.50 | 1 | 0.17 | 15 | 2.55 | |
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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