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Individual Calculations May 2015 |
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| Zak, Arad Total change: 12.40 | |   |
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| Liga Alef Shfela 2015 Round 4-6 | various | ISR | 2015-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1894 | 2063 | 1.50 | 2 | 0.10 | 20 | 2.00 | |
|  Rusanovsky, Yan | | | 2025 | ISR | 1.00 | 1 | 0.45 | 20 | 9.00 | | | Gabizon, Eyal | | | 1762 | ISR | 0.50 | 1 | -0.35 | 20 | -7.00 | |
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) | | | | 30th Czerniak Memorial Open A | Tel Aviv | ISR | 2015-04-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2194 | 2102 | 2.50 | 5 | 0.52 | 20 | 10.40 | |
|  Soffer, Ram | g | | 2466 | ISR | 0.50 | 1 | 0.40 | 20 | 8.00 | | | Marcovici, Adrian | | | 2023 | ISR | 0.50 | 1 | -0.11 | 20 | -2.20 | | | Iskhakov, Michael | | | 2177 | ISR | 0.50 | 1 | 0.10 | 20 | 2.00 | | | Zak, Uriel | m | | 2273 | ISR | 0.00 | 1 | -0.27 | 20 | -5.40 | | | Shani, Amichai | | | 2031 | ISR | 1.00 | 1 | 0.40 | 20 | 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) | | |
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