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Individual Calculations July 2009 |
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| Gershkowich, David Total change: 7.05 | |   |
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| Israel National League 2009 | Various | ISR | 2009-01-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2293 | 2360 | 1.00 | 4 | -1.36 | 15 | -20.40 | |
|  Klenburg, Mikhail | m | | 2426 | UKR | 0.00 | 1 | -0.41 | 15 | -6.15 | |  Nesterovsky, Alex | | | 2249 | ISR | 0.00 | 1 | -0.65 | 15 | -9.75 | | | Tarnopolsky, Anatoly | f | | 2301 | ISR | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Porat, David | f | | 2196 | ISR | 0.50 | 1 | -0.22 | 15 | -3.30 | |
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) | | | | Pesah 2009 Mark Centre | Tel Aviv | ISR | 2009-04-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2262 | 2340 | 3.00 | 5 | -0.02 | 15 | -0.30 | |
| | Zalkind, Konstantin | f | | 2160 | ISR | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Kaplivatski, Alexander | | | 2275 | ISR | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Belytsky, Alexandr | f | | 2315 | RUS | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Battaglini, Gabriel | | | 2325 | FRA | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Davarashvili, Nodar | | | 2234 | GEO | 0.00 | 1 | -0.64 | 15 | -9.60 | |
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) | | | | Elitzur Stav 2009 | Petach Tikva | ISR | 2009-04-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2327 | 2340 | 6.50 | 9 | 1.85 | 15 | 27.75 | |
| | Yaacov, Avi | | | 2186 | ISR | 0.50 | 1 | -0.21 | 15 | -3.15 | | | Kudischewitsch, David | m | | 2367 | RUS | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Nesterovsky, Alex | | | 2255 | ISR | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Kalka, Arkadius Georg | f | | 2397 | GER | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Sidorenko, Ilya | | | 2357 | ISR | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Arlinsky, Uriel | | | 2235 | ISR | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Klenburg, Mikhail | m | | 2429 | UKR | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Nisman, Boris I | m | | 2374 | RUS | 1.00 | 1 | 0.55 | 15 | 8.25 | | | Neimer, Vitaly | f | | 2344 | ISR | 0.50 | 1 | 0.01 | 15 | 0.15 | |
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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