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Individual Calculations April 2021 |
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| Ribstein, Orel Total change: 25.25 | |   |
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| Rishon Lezion automn 2020-21 | Rishon Lezion | ISR | 2020-12-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1803 | 1837 | 3.50 | 7 | -0.23 | 25 | -5.75 | |
|  Sherman, Reem | | | 2018 | ISR | 0.50 | 1 | 0.24 | 25 | 6.00 | |  Raiko, Yossi | | | 1919 | ISR | 0.00 | 1 | -0.39 | 25 | -9.75 | | | Pelech, Roee | | | 1761 | ISR | 1.00 | 1 | 0.40 | 25 | 10.00 | | | Leib, Yoni | | | 1672 | ISR | 0.50 | 1 | -0.22 | 25 | -5.50 | | | Medovoy, Yaniv | | | 1462 | ISR | 0.00 | 1 | -0.91 | 25 | -22.75 | | | Gleizer, Adar | | | 1833 | ISR | 1.00 | 1 | 0.49 | 25 | 12.25 | | | Leibi, Yaniv | | | 1953 | ISR | 0.50 | 1 | 0.16 | 25 | 4.00 | |
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) | | | | Liga Ilit Lenoar 2021 Group C Rounds 2-3 | Various | ISR | 2021-03-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1847 | 1802 | 1.00 | 2 | 0.12 | 25 | 3.00 | |
| | Sheinkman, Lidan | | | 1895 | ISR | 0.50 | 1 | 0.13 | 25 | 3.25 | | | Robach, Shay | | | 1798 | ISR | 0.50 | 1 | -0.01 | 25 | -0.25 | |
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) | | | | Israel Youth Championship Finals 2021 U12 - Israel Eshel Memorial | Hakfar Hayarok | ISR | 2021-03-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1451 | 1802 | 8.50 | 9 | 0.56 | 25 | 14.00 | |
| | Goz, Shachar | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Shachak, Ido | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Qasem, Muhamad Mody | | | 1440 | ISR | 1.00 | 1 | 0.10 | 25 | 2.50 | | | Dezent, Eyal | | | 1620 | ISR | 0.50 | 1 | -0.24 | 25 | -6.00 | | | Blumenthal, Michael | | | 1416 | ISR | 1.00 | 1 | 0.09 | 25 | 2.25 | | | Abitbul, Matan | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Ostrovsky Berman, Noam | | | 1573 | ISR | 1.00 | 1 | 0.21 | 25 | 5.25 | | | Berlad, Asaf | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Kfir, Nadav | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | * 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) | | | | Israel girls chess championship under 12 | Ashdod | ISR | 2021-03-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1451 | 1802 | 8.50 | 9 | 0.56 | 25 | 14.00 | |
| | Goz, Shachar | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Shachak, Ido | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Qasem, Muhamad Mody | | | 1440 | ISR | 1.00 | 1 | 0.10 | 25 | 2.50 | | | Dezent, Eyal | | | 1620 | ISR | 0.50 | 1 | -0.24 | 25 | -6.00 | | | Blumenthal, Michael | | | 1416 | ISR | 1.00 | 1 | 0.09 | 25 | 2.25 | | | Abitbul, Matan | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Ostrovsky Berman, Noam | | | 1573 | ISR | 1.00 | 1 | 0.21 | 25 | 5.25 | | | Berlad, Asaf | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | Kfir, Nadav | | | 1402 * | ISR | 1.00 | 1 | 0.08 | 25 | 2.00 | | | * 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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