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Individual Calculations May 2023 |
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| Boiko, Keren Total change: -50.40 | |   |
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| Israel Youth Girl Championship under 14 2023 | Israel | ISR | 2023-03-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1207 | 1301 | 2.00 | 5 | -1.09 | 40 | -43.60 | |
|  Bashin, Inbar | | | 1047 | ISR | 0.50 | 1 | -0.31 | 40 | -12.40 | |  Rezidor, Rachel | | | 1132 | ISR | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Eshkol, Lilian | | | 1383 | ISR | 0.00 | 1 | -0.39 | 40 | -15.60 | | | Gavriel, Inbal | | | 1360 | ISR | 0.00 | 1 | -0.42 | 40 | -16.80 | | | Sobel, Michal | | | 1112 | ISR | 0.50 | 1 | -0.25 | 40 | -10.00 | |
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) | | | | Rishon Lezion winter tour 2023 second | Rishon le Zion | ISR | 2023-03-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1274 | 1301 | 1.50 | 4 | -0.64 | 40 | -25.60 | |
| | Erenberg, Itay | | | 1110 | ISR | 0.00 | 1 | -0.75 | 40 | -30.00 | | | Oring, Amit | | | 1303 | ISR | 0.00 | 1 | -0.50 | 40 | -20.00 | | | Shulman, Andi | | | 1248 | ISR | 1.00 | 1 | 0.43 | 40 | 17.20 | | | Breuer, Yuval | | | 1433 | ISR | 0.50 | 1 | 0.18 | 40 | 7.20 | |
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) | | | | League Bet Rishon Rehovot 2023 7 | Israel | ISR | 2023-04-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1833 | 1291 | 0.50 | 1 | 0.47 | 40 | 18.80 | |
| | Petrushinsky, Ilya | | | 1833 | ISR | 0.50 | 1 | 0.47 | 40 | 18.80 | |
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) | | |
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