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Individual Calculations September 2009 |
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| Tratatovici, Dan Total change: 23.85 | |   |
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| ISR 2nd League South 2009 | Various | ISR | 2009-01-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2298 | 2122 | 5.00 | 10 | 2.28 | 15 | 34.20 | |
|  Andreev, Dmitri | | | 2285 | ISR | 0.50 | 1 | 0.22 | 15 | 3.30 | | | Pasman, Michael | f | | 2350 | ISR | 0.50 | 1 | 0.29 | 15 | 4.35 | |  Gutkin, Boris | | | 2271 | ISR | 1.00 | 1 | 0.70 | 15 | 10.50 | | | Deutsch, Eyal | f | | 2393 | ISR | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Vasiliev, Olga | | wm | 2265 | ISR | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Goikhman, Valentin | | | 2209 | ISR | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Lederer, Yoav | | | 2300 | ISR | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Kataev, Simcho | | | 2309 | RUS | 1.00 | 1 | 0.74 | 15 | 11.10 | | | Kagan, Yosef | f | | 2290 | ISR | 1.00 | 1 | 0.72 | 15 | 10.80 | | | Gofman, Alex | | | 2304 | ISR | 0.00 | 1 | -0.26 | 15 | -3.90 | |
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) | | | | KFS Spring 2009 Rashit | Kfar Saba | ISR | 2009-05-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2021 | 2149 | 3.00 | 6 | -0.99 | 15 | -14.85 | |
| | Gerchikov, Pavel | | | 2085 | ISR | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Paz, Arnon | | | 1852 | ISR | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Atzmon, Emanuel | | | 2073 | ISR | 0.50 | 1 | -0.10 | 15 | -1.50 | | | Portnoy, Matan | | | 2007 | ISR | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Magen, Paz | | | 2009 | ISR | 0.00 | 1 | -0.69 | 15 | -10.35 | | | Schwarz, Harry | | | 2101 | ISR | 1.00 | 1 | 0.43 | 15 | 6.45 | |
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) | | | | KFS Weekend 2009 | Kfar Saba | ISR | 2009-08-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2309 | 2164 | 2.00 | 5 | 0.38 | 15 | 5.70 | |
| | Gruenfeld, Yehuda | g | | 2490 | ISR | 1.00 | 1 | 0.87 | 15 | 13.05 | | | Sidorenko, Ilya | | | 2390 | ISR | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Kudischewitsch, David | m | | 2366 | RUS | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Hertz, Yaniv | | | 1992 | ISR | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Shnaider, David | | | 2305 | RUS | 0.00 | 1 | -0.31 | 15 | -4.65 | |
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) | | | | International Chess Festival Mihail Sadoveanu | Iasi | ROU | 2009-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2065 | 2164 | 5.50 | 9 | -0.08 | 15 | -1.20 | |
| | Damaschin, Gheorghe | | | 1764 * | ROU | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Lupulescu, Constantin | g | | 2564 * | ROU | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Popescu, Stefan-Claudiu | | | 1904 | ROU | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Arghirescu, Andrei | | | 1970 | ROU | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Manea, Alexandru | m | | 2403 | ROU | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Manole, Stefan | | | 1902 | ROU | 0.00 | 1 | -0.82 | 15 | -12.30 | | | Ungureanu, Radu | | | 1924 | MDA | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Visanescu, Daria-Ioana | | wf | 1873 | ROU | 1.00 | 1 | 0.15 | 15 | 2.25 | | | Pessi, Emil-George | f | | 2285 | ROU | 0.50 | 1 | 0.16 | 15 | 2.40 | | | * 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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