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Individual Calculations September 2021 |
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| Williams, Oscar Total change: 61.60 | |   |
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| Maccabi Ramat Gan Chess Championship 2021 B | Ramat Gan | ISR | 2021-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1287 | 1345 | 2.50 | 4 | 0.21 | 40 | 8.40 | |
|  Sapir, Omri | | | 1243 | ISR | 0.50 | 1 | -0.14 | 40 | -5.60 | |  Gavriel, Adam | | | 1083 | ISR | 1.00 | 1 | 0.18 | 40 | 7.20 | | | Blumenthal, Michael | | | 1504 | ISR | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Goz, Itay | | | 1318 | ISR | 0.50 | 1 | -0.04 | 40 | -1.60 | |
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 |
| 1320 | 1345 | 4.00 | 5 | 1.33 | 40 | 53.20 | |
| | Berezkin, Erik | | | 1308 | ISR | 1.00 | 1 | 0.45 | 40 | 18.00 | | | Gleizer, Lior | | | 1243 | ISR | 0.00 | 1 | -0.64 | 40 | -25.60 | | | Rubinstein, Dori | | | 1320 | ISR | 1.00 | 1 | 0.47 | 40 | 18.80 | | | Sagi, Elisha | | | 1148 | ISR | 1.00 | 1 | 0.25 | 40 | 10.00 | | | Medovoy, Yaniv | | | 1583 | ISR | 1.00 | 1 | 0.80 | 40 | 32.00 | |
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) | | |
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