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Individual Calculations April 2009 |
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| Lavi, Royi Total change: 19.50 | |   |
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| Israel U20 League 2009 | Various | ISR | 2008-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1826 | 1708 | 1.00 | 3 | -0.11 | 25 | -2.75 | |
|  Porat, Hen | | | 1490 | ISR | 1.00 | 1 | 0.22 | 25 | 5.50 | |  Shusterman, Mark | | | 2058 | ISR | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Steinberg, Nitzan | | | 1931 | ISR | 0.00 | 1 | -0.22 | 25 | -5.50 | |
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) | | | | Shapira Moti Memorial 2009 | Rishon Le-Zion | ISR | 2009-01-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1929 | 1708 | 3.00 | 9 | 0.89 | 25 | 22.25 | |
| | Papiashvilli, Kobi | | | 1789 | ISR | 0.00 | 1 | -0.39 | 25 | -9.75 | | | Ben-Ari, Hogel | | | 1934 | ISR | 0.50 | 1 | 0.29 | 25 | 7.25 | | | Segal, Naum | | | 2058 | LAT | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Ben Artzi, Ido | | | 2058 | ISR | 1.00 | 1 | 0.89 | 25 | 22.25 | | | Gera, Yuval | | | 1904 | ISR | 0.00 | 1 | -0.25 | 25 | -6.25 | | | Kulikov, Alexander | | | 2056 | ISR | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Dvir, Ofir | | | 1768 | ISR | 1.00 | 1 | 0.58 | 25 | 14.50 | | | Veinberg, Nimrod | | | 1849 | ISR | 0.50 | 1 | 0.19 | 25 | 4.75 | | | Heruti, Ofer | | | 1947 | ISR | 0.00 | 1 | -0.20 | 25 | -5.00 | |
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) | | |
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