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Individual Calculations February 2013 |
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| Pomahs, Ziedonis Total change: -23.10 | |   |
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| Riga Chess federation championship-2013 I stage | Riga | LAT | 2013-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1880 | 1717 | 0.50 | 3 | -0.36 | 30 | -10.80 | |
|  Lelis, Edgars | | | 1959 | LAT | 0.00 | 1 | -0.20 | 30 | -6.00 | | | Pomahs, Martins | | | 1831 | LAT | 0.50 | 1 | 0.16 | 30 | 4.80 | | | Kane, Marta | | | 1851 | LAT | 0.00 | 1 | -0.32 | 30 | -9.60 | |
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) | | | | Latvian Championship- 2013 1/4 final | Riga | LAT | 2013-01-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1956 | 1717 | 0.00 | 2 | -0.41 | 30 | -12.30 | |
| | Petrovskis, Olegs | | | 1973 | LAT | 0.00 | 1 | -0.19 | 30 | -5.70 | |  Lielmezs, Girts | | | 1938 | LAT | 0.00 | 1 | -0.22 | 30 | -6.60 | |
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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