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Individual Calculations September 2009 |
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| Freidles, Victor Total change: -21.75 | |   |
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| ISR 2nd League South 2009 | Various | ISR | 2009-01-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2155 | 1969 | 0.00 | 1 | -0.26 | 15 | -3.90 | |
|  Segal, Naum | | | 2155 | LAT | 0.00 | 1 | -0.26 | 15 | -3.90 | |
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) | | | | Maccabiah 2009 Intl Open | Natanya | ISR | 2009-07-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2017 | 1969 | 2.00 | 6 | -0.51 | 15 | -7.65 | |
| | Porat, Hen | | | 1569 * | ISR | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Afgin, David | | | 2112 | ISR | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Kolos, Mendel | | | 2085 | ISR | 0.00 | 1 | -0.34 | 15 | -5.10 | |  Segal, Naum | | | 2130 | LAT | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Levitsky, Artur | | | 2037 | ISR | 0.50 | 1 | 0.09 | 15 | 1.35 | | | Blaushtain, Boris | | | 2171 | ISR | 0.50 | 1 | 0.26 | 15 | 3.90 | | | * 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) | | | | KFS Weekend 2009 | Kfar Saba | ISR | 2009-08-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2125 | 1969 | 0.50 | 4 | -0.68 | 15 | -10.20 | |
| | Egozi, Nadav | | | 2208 | ISR | 0.00 | 1 | -0.20 | 15 | -3.00 | | | Givon, Asaf | | | 2132 | ISR | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Ben Artzi, Ido | | | 2076 | ISR | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Len, Irina | | | 2082 | ISR | 0.50 | 1 | 0.15 | 15 | 2.25 | |
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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