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Individual Calculations July 2023 |
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| Idesis, Yaacov Total change: 5.60 | |   |
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| European Senior Chess Championship 2023 over 65 - Open | Acqui Terme | ITA | 2023-05-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1872 | 1780 | 4.00 | 9 | 0.47 | 20 | 9.40 | |
|  Chapman, Terry P D | f | | 2204 | ENG | 0.00 | 1 | -0.07 | 20 | -1.40 | |  Mazza, Maurizio | | | 1546 | ITA | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Van Herck, Marcel | | | 2009 | BEL | 0.50 | 1 | 0.29 | 20 | 5.80 | | | Kierzek, Mira | | wf | 1955 | GER | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Goli, Daniele | | | 1971 | ITA | 0.00 | 1 | -0.25 | 20 | -5.00 | | | Tibaldeschi, Attilio | | | 1521 | ITA | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Alquist, Erik | | | 1959 | SWE | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Stokes, Michael | | | 1973 | ENG | 0.00 | 1 | -0.25 | 20 | -5.00 | | | Cavatorta, Fosco | | | 1709 | ITA | 0.50 | 1 | -0.10 | 20 | -2.00 | |
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) | | | | Israel league playoffs 2023 | Israel | ISR | 2023-06-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1630 | 1773 | 0.50 | 1 | -0.19 | 20 | -3.80 | |
| | Kleinerman, Yigal | | | 1630 | ISR | 0.50 | 1 | -0.19 | 20 | -3.80 | |
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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