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Individual Calculations September 2021 |
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| Weintraub, Amit Total change: -34.20 | |   |
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| Maccabi Ramat Gan Chess Championship 2021 A | Ramat Gan | ISR | 2021-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1980 | 1954 | 1.00 | 5 | -1.42 | 20 | -28.40 | |
|  Aharonovich, Itamar | f | | 2304 | ISR | 0.00 | 1 | -0.11 | 20 | -2.20 | |  Vagman, Roy | c | | 2200 | ISR | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Kochavi, Dana | | | 1799 | ISR | 0.00 | 1 | -0.71 | 20 | -14.20 | | | Levy, Zohar | | | 1855 | ISR | 0.00 | 1 | -0.64 | 20 | -12.80 | | | Leor, Ephraim | | | 1742 | ISR | 1.00 | 1 | 0.23 | 20 | 4.60 | |
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 |
| 1929 | 1954 | 1.00 | 1 | 0.47 | 20 | 9.40 | |
| | Cnaan, Moshe | | | 1929 | ISR | 1.00 | 1 | 0.47 | 20 | 9.40 | |
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) | | | | Max Mit Memorial 2021 A | Rishon Lezion | ISR | 2021-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2107 | 1954 | 1.50 | 5 | -0.23 | 20 | -4.60 | |
| | Ben Ari, Yannay | f | | 2354 * | ISR | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Vardi, Shlomit | | | 1823 | ISR | 1.00 | 1 | 0.32 | 20 | 6.40 | | | Vagman, Roy | c | | 2200 | ISR | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Duchan, Yoav | | | 1802 | ISR | 0.50 | 1 | -0.20 | 20 | -4.00 | | | Kupervaser, Erez | f | | 2354 * | ISR | 0.00 | 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) | | | | Summer Haifa-Nesher | Haifa | ISR | 2021-08-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1847 | 1954 | 2.00 | 4 | -0.53 | 20 | -10.60 | |
| | Shevchenko, Lev | | | 1661 | ISR | 0.00 | 1 | -0.85 | 20 | -17.00 | | | Mirzayev, Sergey | | | 1828 | ISR | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Menahem, Adi | | | 1725 | ISR | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Kaplivatski, Alexander | f | | 2175 | ISR | 0.00 | 1 | -0.22 | 20 | -4.40 | |
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) | | |
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