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Individual Calculations September 2021 |
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| Abitbul, Matan Total change: -67.20 | |   |
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| Kiryat Ono Summer 2021 B | Kiryat Ono | ISR | 2021-07-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1271 | 1311 | 1.00 | 3 | -0.66 | 40 | -26.40 | |
|  Meirovich, Ilay | | | 1419 | ISR | 0.00 | 1 | -0.35 | 40 | -14.00 | |  Saidy, Ariel | | | 1176 | ISR | 1.00 | 1 | 0.32 | 40 | 12.80 | | | Ingel, Mica Bar | | | 1218 | ISR | 0.00 | 1 | -0.63 | 40 | -25.20 | |
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) | | | | Maccabi Ramat Gan Chess Championship 2021 B | Ramat Gan | ISR | 2021-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1264 | 1262 | 2.00 | 4 | 0.00 | 40 | 0.00 | |
| | Lapushnian, Maya | | | 1511 | ISR | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Sapir, Omri | | | 1243 | ISR | 0.00 | 1 | -0.53 | 40 | -21.20 | | | Bazavluk, Vari | | | 1035 | ISR | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Iskoz, Daniel | | | 1267 | ISR | 1.00 | 1 | 0.51 | 40 | 20.40 | |
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) | | | | Israeli team U14 championship, Nahum Naftali memorial | Afula | ISR | 2021-08-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1183 | 1262 | 2.00 | 5 | -1.02 | 40 | -40.80 | |
| | Levitsky, Itay | | | 1099 | ISR | 0.00 | 1 | -0.72 | 40 | -28.80 | | | Sagi, Alon | | | 1048 | ISR | 1.00 | 1 | 0.23 | 40 | 9.20 | | | Viks, Ido | | | 1233 | ISR | 0.00 | 1 | -0.54 | 40 | -21.60 | | | Goldstein, Asaf | | | 1247 | ISR | 0.00 | 1 | -0.52 | 40 | -20.80 | | | Zakin, Ilay | | | 1287 | ISR | 1.00 | 1 | 0.53 | 40 | 21.20 | |
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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