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Individual Calculations September 2021 |
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| Dvorsky, David Total change: 33.20 | |   |
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| Israel Senior Championship Semi-final, Lasker Tel Aviv | Tel Aviv | ISR | 2021-07-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1651 | 1323 | 2.00 | 5 | 1.33 | 20 | 26.60 | |
|  Zilbershtein, Victor | | | 1637 | ISR | 0.00 | 1 | -0.14 | 20 | -2.80 | | | Maliakin, Ita | | | 1516 | ISR | 1.00 | 1 | 0.75 | 20 | 15.00 | | | Waisberg, Arnold | | | 1654 | ISR | 0.00 | 1 | -0.12 | 20 | -2.40 | |  Shorek, Mordechai | | | 1723 * | ISR | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Zakaria, Ada | | | 1723 * | ISR | 1.00 | 1 | 0.92 | 20 | 18.40 | | | * 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) | | | | Max Mit Memorial 2021 B | Rishon Lezion | ISR | 2021-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1444 | 1312 | 1.00 | 2 | 0.33 | 20 | 6.60 | |
| | Asherov, Aharon | | | 1545 | ISR | 0.00 | 1 | -0.21 | 20 | -4.20 | | | Shiloah, Eylon | | | 1343 | ISR | 1.00 | 1 | 0.54 | 20 | 10.80 | |
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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