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Individual Calculations September 2023 |
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| Boiko, Keren Total change: 63.60 | |   |
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| 2023 Israeli team U14 championship, Nahum Naftali memorial | Afula | ISR | 2023-08-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1179 | 1354 | 3.00 | 3 | 0.83 | 40 | 33.20 | |
|  Lahav, Ziv | | | 1245 | ISR | 1.00 | 1 | 0.35 | 40 | 14.00 | | | Mankovich, Yoav | | | 1077 | ISR | 1.00 | 1 | 0.17 | 40 | 6.80 | |  Shilo, Michael | | | 1215 | ISR | 1.00 | 1 | 0.31 | 40 | 12.40 | |
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 Championship under 18- 2023 | Rishon le Zion | ISR | 2023-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1305 | 1354 | 3.00 | 4 | 0.76 | 40 | 30.40 | |
| | Sella, Eyal | | | 1551 | ISR | 1.00 | 1 | 0.75 | 40 | 30.00 | | | Klein, Yoav | | | 1383 | ISR | 1.00 | 1 | 0.54 | 40 | 21.60 | | | Marcus, Omer | | | 1098 | ISR | 0.00 | 1 | -0.81 | 40 | -32.40 | | | Tavor, Itay | | | 1187 | ISR | 1.00 | 1 | 0.28 | 40 | 11.20 | |
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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