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Individual Calculations September 2021 |
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| Kupervaser, Erez Total change: -12.80 | |   |
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| Elitzur Summer 2021 GM | Petah Tikva | ISR | 2021-05-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2456 | 2391 | 4.50 | 9 | 0.78 | 20 | 15.60 | |
|  Rozentalis, Eduardas | g | | 2529 | LTU | 1.00 | 1 | 0.69 | 20 | 13.80 | | | Bronstein, Or | m | | 2444 | ISR | 0.50 | 1 | 0.07 | 20 | 1.40 | |  Peng, Li Min | m | | 2464 | UKR | 0.50 | 1 | 0.10 | 20 | 2.00 | | | Bernadskiy, Vitaliy | g | | 2587 | UKR | 0.00 | 1 | -0.25 | 20 | -5.00 | | | Sivuk, Vitaly | g | | 2550 | UKR | 0.50 | 1 | 0.21 | 20 | 4.20 | | | Musyuk, Lior | f | | 2345 | ISR | 0.50 | 1 | -0.06 | 20 | -1.20 | | | Ben Ari, Yannay | f | | 2390 | ISR | 0.50 | 1 | 0.00 | 20 | 0.00 | | | Solomon, Asif | f | | 2392 | ISR | 0.50 | 1 | 0.00 | 20 | 0.00 | | | Tzidkiya, Yeshaayahu | f | | 2403 | ISR | 0.50 | 1 | 0.02 | 20 | 0.40 | |
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) | | | | Maccabi Ramat Gan Chess Championship 2021 A | Ramat Gan | ISR | 2021-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2285 | 2384 | 3.00 | 5 | -0.11 | 20 | -2.20 | |
| | Gruzman, Ilya | | | 2067 | ISR | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Guz, Ari | f | | 2303 | ISR | 0.50 | 1 | -0.11 | 20 | -2.20 | | | Aizenberg, Benny | f | | 2309 | ISR | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Veinberg, Nimrod | m | | 2385 | ISR | 0.50 | 1 | 0.00 | 20 | 0.00 | | | Bitensky, Igor | m | | 2363 | ISR | 0.00 | 1 | -0.53 | 20 | -10.60 | |
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) | | | | Liga Arzit Zafon 2021 Round 9 | Various | ISR | 2021-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2340 | 2384 | 1.00 | 1 | 0.44 | 20 | 8.80 | |
| | Lev, Ronen | g | | 2340 | ISR | 1.00 | 1 | 0.44 | 20 | 8.80 | |
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) | | | | Max Mit Memorial 2021 A | Rishon Lezion | ISR | 2021-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2067 | 2384 | 2.50 | 5 | -1.75 | 20 | -35.00 | |
| | Sokolinsky, Yaakov | | | 1990 | ISR | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Gorodetzky, Matan | f | | 2251 | ISR | 0.00 | 1 | -0.68 | 20 | -13.60 | | | Gavriely, Or | | | 1984 * | ISR | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Barak, Gil | | | 2128 | ISR | 0.00 | 1 | -0.81 | 20 | -16.20 | | | Weintraub, Amit | | | 1984 * | ISR | 1.00 | 1 | 0.08 | 20 | 1.60 | | | * 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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