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Individual Calculations April 2009 |
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| Sirkova, Darena Total change: 21.60 | |   |
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| 1-st Memorial GM Nino Kirov | Sofia | BUL | 2009-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2209 | 1942 | 1.00 | 5 | 0.10 | 15 | 1.50 | |
|  Dobrev, Nanko | m | | 2292 | BUL | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Todorov, Momchil | | | 2237 | BUL | 0.00 | 1 | -0.15 | 15 | -2.25 | |  Popov, Ilian | | | 2205 | BUL | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Videnova, Iva | | wf | 2193 | BUL | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Nenov, Radoslav | | | 2120 | BUL | 1.00 | 1 | 0.73 | 15 | 10.95 | |
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) | | | | 58th Bulgarian Women Championship Semi-final | Plovdiv | BUL | 2009-01-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1888 | 1942 | 3.50 | 6 | 0.11 | 15 | 1.65 | |
| | Harizanova, Marina | | | 1679 | BUL | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Vladimirova, Maria | | | 2064 | BUL | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Petkova, Veneta | | | 1964 | BUL | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Bednikova, Stefi | | | 2086 | BUL | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Gradevska, Desislava | | | 1721 | BUL | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Krumova, Ani | | | 1812 | BUL | 0.50 | 1 | -0.18 | 15 | -2.70 | |
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) | | | | 31st Bulgarian Open Chmpionship - Georgi Tringov Memorial 01.02.2009-07.02.2009 | Plovdiv | BUL | 2009-02-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2015 | 1942 | 1.50 | 3 | 0.28 | 15 | 4.20 | |
| | Stamenkov, Vanco | m | | 2292 | MKD | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Papathanasiou, Elisavet | | | 1592 | GRE | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Glavchev, Stanislav | | | 2160 | BUL | 0.50 | 1 | 0.28 | 15 | 4.20 | |
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) | | | | 58th Bulgarian individual women chess championship | Dupnitsa | BUL | 2009-02-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2092 | 1942 | 4.50 | 11 | 0.95 | 15 | 14.25 | |
| | Nikolova, Adriana | | wm | 2292 | BUL | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Petkova, Veneta | | | 1964 | BUL | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Gradevska, Desislava | | | 1721 | BUL | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Chilingirova, Pavlina | | wm | 2154 | BUL | 0.50 | 1 | 0.27 | 15 | 4.05 | | | Vladimirova, Maria | | | 2064 | BUL | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Bednikova, Stefi | | | 2086 | BUL | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Voiska, Margarita | | wg | 2292 | BUL | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Yordanova, Svetla | | wm | 2202 | BUL | 1.00 | 1 | 0.82 | 15 | 12.30 | | | Krumova, Ani | | | 1812 | BUL | 0.00 | 1 | -0.68 | 15 | -10.20 | | | Videnova, Iva | | wf | 2193 | BUL | 1.00 | 1 | 0.81 | 15 | 12.15 | | | Genova, Lyubka | | wm | 2231 | BUL | 0.00 | 1 | -0.16 | 15 | -2.40 | |
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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