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Individual Calculations July 2011 |
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| Sideris, Giorgos Total change: 10.50 | |   |
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| 7th Kalamaria Spring Open | Kalamaria, Thessaloniki | GRE | 2011-04-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1770 | 1987 | 3.00 | 4 | -0.02 | 15 | -0.30 | |
|  Sakellaridis, Grigorios | | | 1635 | GRE | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Gountras, Klearhos | | | 2001 | GRE | 0.00 | 1 | -0.48 | 15 | -7.20 | |  Ballas, Athanasios-Panagiotis | | | 1701 | GRE | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Psaltis, Aristidis | | | 1741 | GRE | 1.00 | 1 | 0.19 | 15 | 2.85 | |
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 spring open Triandrias - Vasilis Sevastopoulos | Thessaloniki | GRE | 2011-04-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1931 | 1987 | 4.50 | 7 | 0.72 | 15 | 10.80 | |
| | Gavrilidis, Georgios | | | 2161 | GRE | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Lianas, Ioannis | | | 2043 | GRE | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Koutsoura, Georgia | | | 1587 * | GRE | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Makridis, Nikolaos-Lazaros | | | 1645 | GRE | 1.00 | 1 | 0.12 | 15 | 1.80 | | | Nikolaou, Georgios | | | 2290 | GRE | 0.50 | 1 | 0.36 | 15 | 5.40 | | | Palaskos, Marios | | | 1609 | GRE | 0.50 | 1 | -0.41 | 15 | -6.15 | | | Ketzetzis, Georgios | | | 2185 | GRE | 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) | | |
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