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Individual Calculations September 2011 |
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| Petrakis, Stylianos Total change: 11.55 | |   |
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| 14th National Greek Ind. Championship - Open U10 | Eretria | GRE | 2011-06-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1447 | 1617 | 1.00 | 2 | -0.42 | 30 | -12.60 | |
|  Alexakis, Georgios | | | 1542 | GRE | 0.00 | 1 | -0.60 | 30 | -18.00 | | | Hasouris, Georgios | | | 1352 | GRE | 1.00 | 1 | 0.18 | 30 | 5.40 | |
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) | | | | 3rd International Open of Rethymno 2011 | Rethymno | GRE | 2011-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1977 | 1585 | 1.50 | 6 | 0.99 | 30 | 29.70 | |
| | Guramishvili, Sopiko | | wg | 1985 * | GEO | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Bras, Emanouel | | | 1985 * | GRE | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Papadakis, Theodoros | | | 1984 | GRE | 0.00 | 1 | -0.08 | 30 | -2.40 | | | Naoum, Spyridon | | | 1985 * | GRE | 0.00 | 1 | -0.08 | 30 | -2.40 | |  Adams, Tim P | | | 1935 * | ENG | 1.00 | 1 | 0.89 | 30 | 26.70 | | | Gurevich, Alexander Y | | | 1985 * | RUS | 0.50 | 1 | 0.42 | 30 | 12.60 | | | * 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) | | | NOTE: K factor changed | | 4th International Open of Paleochora 2011 | Paleochora | GRE | 2011-07-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 1585 | 0.00 | 4 | -0.37 | 15 | -5.55 | |
| | Kostopoulos, Evaggelos | | | 1985 * | GRE | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Koutoukidis, Panagiotis | | | 1985 * | GRE | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Serntedakis, Athanasios | | | 1931 | GRE | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Sekadakis, Dimitrios | | | 1953 | GRE | 0.00 | 1 | -0.10 | 15 | -1.50 | | | * 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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