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Individual Calculations May 2015 |
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| Zak, Uriel Total change: -12.10 | |   |
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| Liga Artzit Mercaz 2015 Round 4-6 | various | ISR | 2015-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2292 | 2273 | 1.00 | 3 | -0.42 | 10 | -4.20 | |
|  Gokhvat, Peter | | | 2241 | ISR | 0.50 | 1 | -0.04 | 10 | -0.40 | |  Berkovich, Mark A | m | | 2363 | ISR | 0.00 | 1 | -0.38 | 10 | -3.80 | | | Axelrod, Arie | f | | 2271 | ISR | 0.50 | 1 | 0.00 | 10 | 0.00 | |
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 |
| 2122 | 2273 | 2.00 | 4 | -0.79 | 10 | -7.90 | |
| | Shani, Amichai | | | 2031 | ISR | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Libman, Guy | | | 2245 | ISR | 0.00 | 1 | -0.54 | 10 | -5.40 | | | Zak, Arad | | | 2102 | ISR | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Kraus, Yair | | | 2109 | ISR | 0.00 | 1 | -0.72 | 10 | -7.20 | |
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) | | |
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