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Individual Calculations September 2009 |
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| Portnoy, Matan Total change: 21.90 | |   |
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| KFS Spring 2009 Rashit | Kfar Saba | ISR | 2009-05-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2096 | 2007 | 3.50 | 7 | 0.84 | 15 | 12.60 | |
|  Zalkind, Konstantin | f | | 2160 | ISR | 0.50 | 1 | 0.20 | 15 | 3.00 | |  Boruchovsky, Avital | | | 2084 | ISR | 1.00 | 1 | 0.61 | 15 | 9.15 | | | Grabinsky, Yoni | | | 2150 | ISR | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Tratatovici, Dan | | | 2149 | ISR | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Schwarz, Harry | | | 2101 | ISR | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Mindlin, Alon | | | 2006 | ISR | 1.00 | 1 | 0.50 | 15 | 7.50 | | | Levine, Yonatan | | | 2024 | ISR | 0.50 | 1 | 0.02 | 15 | 0.30 | |
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 |
| 2083 | 2007 | 2.50 | 6 | 0.10 | 15 | 1.50 | |
| | Fishman, Alik | | | 2165 | ISR | 0.50 | 1 | 0.21 | 15 | 3.15 | | | Zalkind, Konstantin | f | | 2142 | ISR | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Maman, Emanuel | | | 1953 | ISR | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Hadari, Ariel | | | 2009 | ISR | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Marcovici, Adrian | | | 2118 | ISR | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Afgin, David | | | 2112 | ISR | 0.50 | 1 | 0.14 | 15 | 2.10 | |
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 |
| 2165 | 2007 | 2.00 | 5 | 0.52 | 15 | 7.80 | |
| | Botvinnik, Irina | | wf | 2240 | ISR | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Aharon, Ofir | | | 2137 | ISR | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Shani, Amichai | | | 2101 | ISR | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Nesterovsky, Alex | | | 2271 | ISR | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Ben Artzi, Ido | | | 2076 | ISR | 1.00 | 1 | 0.60 | 15 | 9.00 | |
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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