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Individual Calculations September 2009 |
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| Mattsson, Michael Total change: -33.15 | |   |
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| Klass M w2, 2009 | Kungsor | SWE | 2009-07-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2114 | 2116 | 1.50 | 5 | -0.99 | 15 | -14.85 | |
|  Winfridsson, Hakan | | | 2133 | SWE | 0.50 | 1 | 0.02 | 15 | 0.30 | |  Melander, Jorgen | | | 1911 | SWE | 1.00 | 1 | 0.24 | 15 | 3.60 | | | Angskog, Kent | | | 2255 | SWE | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Wallgren, Ulf | | | 2100 | SWE | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Van Der Wal, Andreas | | | 2173 | SWE | 0.00 | 1 | -0.42 | 15 | -6.30 | |
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) | | | | 4th International Open Chess Tourn. "Summer Cup 2009" | N.Marmaras, Halkidiki | GRE | 2009-07-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1971 | 2116 | 4.50 | 8 | -0.71 | 15 | -10.65 | |
| | Rabinovich, Yacov | | | 1716 * | RUS | 0.50 | 1 | -0.42 | 15 | -6.30 | | | Shamash, Michelle | | | 1716 * | GRE | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Andreou, Andreas | | | 2214 | GRE | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Nikolaidis, Georgios | | | 1912 | GRE | 0.50 | 1 | -0.26 | 15 | -3.90 | | | Valyi, Adel | | | 1716 * | HUN | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Kutirov, Rolando | g | | 2360 | MKD | 0.50 | 1 | 0.30 | 15 | 4.50 | | | Radchenko, Michail | | | 1954 | RUS | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Pavlidou, Ekaterini | | | 2180 | GRE | 0.00 | 1 | -0.41 | 15 | -6.15 | | | * 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) | | | | Stockholm Open 2009 | Stockholm | SWE | 2009-08-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2017 | 2116 | 2.00 | 4 | -0.51 | 15 | -7.65 | |
| | Lokander, Martin | | | 1901 | SWE | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Sjodin, Bengt | | | 2050 | SWE | 0.00 | 1 | -0.59 | 15 | -8.85 | | | Gamback, Bjorn | | | 2182 | SWE | 0.00 | 1 | -0.41 | 15 | -6.15 | | | Palmqvist, Fredrik | | | 1934 | SWE | 1.00 | 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) | | |
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