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Individual Calculations June 2015 |
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| Osis, Renars Total change: 2.00 | |   |
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| Latvian Teams Chess Championship First League,2015 r1-2 | Riga, | LAT | 2015-02-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2129 | 2170 | 2.00 | 2 | 0.91 | 20 | 18.20 | |
|  Polyakov, Fedor | | | 1911 | LAT | 1.00 | 1 | 0.18 | 20 | 3.60 | |  Jankovskis, Guntis | | | 2346 | LAT | 1.00 | 1 | 0.73 | 20 | 14.60 | |
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 Teams Chess Championship First League,2015 r3-4 | Riga, | LAT | 2015-03-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2050 | 2170 | 0.00 | 2 | -1.32 | 20 | -26.40 | |
| | Visockis, Janis | | | 2102 | LAT | 0.00 | 1 | -0.59 | 20 | -11.80 | | | Beks, Edmunds | | | 1997 | LAT | 0.00 | 1 | -0.73 | 20 | -14.60 | |
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 Teams Chess Championship First League,2015 r5-10 | Riga, | LAT | 2015-04-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2078 | 2170 | 3.00 | 4 | 0.57 | 20 | 11.40 | |
| | Petkevich, Jusefs | g | | 2365 | LAT | 0.50 | 1 | 0.25 | 20 | 5.00 | | | Ziedins, Roberts | | | 1825 | LAT | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Kurpnieks, Vairis | | | 2018 | LAT | 0.50 | 1 | -0.20 | 20 | -4.00 | | | Visockis, Janis | | | 2102 | LAT | 1.00 | 1 | 0.41 | 20 | 8.20 | |
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 Teams Chess Championship First League,2015 r11-13 | Riga, | LAT | 2015-05-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1934 | 2170 | 1.50 | 2 | -0.06 | 20 | -1.20 | |
| | Beks, Edmunds | | | 2043 | LAT | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Ziedins, Roberts | | | 1825 | LAT | 1.00 | 1 | 0.11 | 20 | 2.20 | |
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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