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Individual Calculations September 2009 |
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| Dereshki, Dario Total change: 53.10 | |   |
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| Albena International Open Chess Tournament 2009 | Albena | BUL | 2009-06-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2160 | 1827 | 2.00 | 7 | 1.14 | 25 | 28.50 | |
|  Ivanov, Jordan | m | | 2177 | BUL | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Ivanov, Bogidar | | | 2165 | BUL | 0.00 | 1 | -0.12 | 25 | -3.00 | | | Yakimenko, Alexander A. | | | 2173 | RUS | 1.00 | 1 | 0.89 | 25 | 22.25 | |  Arnaudov, Petar | | | 2177 | BUL | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Mamaev, Evgeniy | | | 2162 | RUS | 0.50 | 1 | 0.38 | 25 | 9.50 | | | Parligras, Cosmin | | | 2177 | ROU | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Dragomir, Constantin | | | 2089 | ROU | 0.50 | 1 | 0.32 | 25 | 8.00 | |
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 | | Team Championship for boys U12 | Borovets | BUL | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1947 | 1837 | 2.00 | 4 | 0.58 | 15 | 8.70 | |
| | Valev, Valentin | | | 1856 | BUL | 0.00 | 1 | -0.47 | 15 | -7.05 | | | Hristov, Dimitar | | | 2068 | BUL | 1.00 | 1 | 0.79 | 15 | 11.85 | | | Daskalov, Dimitar | | | 1936 | BUL | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Todorov, Yavor | | | 1928 | BUL | 0.50 | 1 | 0.12 | 15 | 1.80 | |
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 | | Team Championship for boys U16 | Borovets | BUL | 2009-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2008 | 1837 | 2.00 | 3 | 1.06 | 15 | 15.90 | |
| | Todorov, Petar G. | | | 1740 | BUL | 1.00 | 1 | 0.37 | 15 | 5.55 | | | Berbatov, Kiprian | f | | 2237 * | BUL | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Stoyanov, Ivaylo | | | 2047 | BUL | 1.00 | 1 | 0.77 | 15 | 11.55 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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