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Individual Calculations July 2009 |
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| Siwiec, Arkadiusz Total change: 16.20 | |   |
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| Grand Prix Gorzowa Wlkp | Gorzowa Wlkp | POL | 2009-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2099 | 2082 | 3.50 | 4 | 1.64 | 15 | 24.60 | |
|  Aliavdin, Nikolai | m | | 2356 | BLR | 1.00 | 1 | 0.83 | 15 | 12.45 | |  Koitka, Jakub | | | 1732 | POL | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Demidowicz, Maria | | | 2131 | POL | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Dragun, Kamil | | | 2178 | POL | 0.50 | 1 | 0.13 | 15 | 1.95 | |
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) | | | | Mistrzostwa Polski Juniorów do 16 lat w szachach | Chotowa | POL | 2009-03-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 2082 | 5.50 | 11 | -1.45 | 15 | -21.75 | |
| | Ancuta, Adam | | | 1867 | POL | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Dowgird, Filip | | | 1991 | POL | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Solnicki, Michal | | | 1997 | POL | 0.00 | 1 | -0.62 | 15 | -9.30 | | | Wesolowski, Edgar | | | 1866 | POL | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Wandzik, Wojciech | | | 2051 | POL | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Lis, Marek | | | 2003 | POL | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Swiech, Przemyslaw | | | 2111 | POL | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Sowul, Bartosz | | | 2012 | POL | 0.00 | 1 | -0.60 | 15 | -9.00 | | | Adamek, Przemyslaw | | | 1956 | POL | 0.00 | 1 | -0.67 | 15 | -10.05 | | | Cieslar, Michal | | | 1909 | POL | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Wiewiora, Eneasz | | | 2044 | POL | 0.50 | 1 | -0.05 | 15 | -0.75 | |
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) | | | | 17th Lasker's Memorial - Open A | Barlinek | POL | 2009-05-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2319 | 2062 | 1.50 | 3 | 0.89 | 15 | 13.35 | |
| | Nurkiewicz, Maciej | | | 2397 | POL | 0.50 | 1 | 0.38 | 15 | 5.70 | | | Zezulkin, Jurij | g | | 2412 | BLR | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Sukhimski, Vladimir | | | 2148 | UKR | 1.00 | 1 | 0.62 | 15 | 9.30 | |
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) | | |
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