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Individual Calculations September 2009 |
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| Valev, Valentin Total change: 38.55 | |   |
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| Team Championship for boys U12 | Borovets | BUL | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1942 | 1856 | 3.50 | 4 | 1.95 | 15 | 29.25 | |
|  Dereshki, Dario | | | 1837 | BUL | 1.00 | 1 | 0.47 | 15 | 7.05 | |  Todorov, Yavor | | | 1928 | BUL | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Daskalov, Dimitar | | | 1936 | BUL | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Hristov, Dimitar | | | 2068 | BUL | 1.00 | 1 | 0.77 | 15 | 11.55 | |
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) | | | | Team Championship for boys U16 | Borovets | BUL | 2009-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1878 | 1856 | 2.50 | 4 | 0.62 | 15 | 9.30 | |
| | Titov, Tito | | | 1760 | BUL | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Atanasov, Anatoli | | | 2006 | BUL | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Kolev, Hristiyan | | | 1765 | BUL | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Sofranov, Velizar | | | 1982 | BUL | 1.00 | 1 | 0.67 | 15 | 10.05 | |
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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