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Individual Calculations February 2023 |
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| Gao, Oscar Total change: 28.88 | |   |
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| 2023 Australian Open Championship | Perth | AUS | 2023-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1663 | 1727 | 4.50 | 9 | -0.76 | 38 | -28.88 | |
|  Lakner, Jay | | | 2060 | AUS | 0.00 | 1 | -0.12 | 38 | -4.56 | |  Marriott, Max | | | 1533 | AUS | 1.00 | 1 | 0.25 | 38 | 9.50 | | | Hare, Tim | | | 2017 | NZL | 0.00 | 1 | -0.16 | 38 | -6.08 | | | Gunawan, Marco | | | 1507 | AUS | 1.00 | 1 | 0.22 | 38 | 8.36 | | | Lee, Alexandre Km | | | 1558 | ENG | 0.00 | 1 | -0.72 | 38 | -27.36 | | | Solomontchik, Daniel | | | 1453 | FID | 0.50 | 1 | -0.33 | 38 | -12.54 | | | Arthur, Matthew | | | 1441 | AUS | 1.00 | 1 | 0.16 | 38 | 6.08 | | | Norris, Damian | c | | 1890 | FIJ | 0.00 | 1 | -0.28 | 38 | -10.64 | | | Rafiei Darani, Daryoush | | | 1504 | AUS | 1.00 | 1 | 0.22 | 38 | 8.36 | |
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) | | | | 2023 Oceania Zonal 3.6 Open | Melbourne | AUS | 2023-01-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1779 | 1727 | 5.50 | 9 | 1.52 | 38 | 57.76 | |
| | Raichura, Dev | | | 1327 * | AUS | 1.00 | 1 | 0.08 | 38 | 3.04 | | | Lekkas, Frank | | | 2056 | AUS | 0.50 | 1 | 0.38 | 38 | 14.44 | | | Salasan, Haran | | | 2002 | AUS | 0.50 | 1 | 0.33 | 38 | 12.54 | | | Kelly, Adam | c | | 2005 | AUS | 0.00 | 1 | -0.17 | 38 | -6.46 | | | Rumley, William | | | 1502 | AUS | 0.50 | 1 | -0.28 | 38 | -10.64 | | | Koh, Shannon | | | 1541 | AUS | 1.00 | 1 | 0.26 | 38 | 9.88 | | | Ogada-Osir, Ibrahim | | | 2123 | AUS | 0.00 | 1 | -0.08 | 38 | -3.04 | | | Rodriguez, Maickel | | | 1543 | AUS | 1.00 | 1 | 0.26 | 38 | 9.88 | | | Lee, Lachlan | | | 1910 | AUS | 1.00 | 1 | 0.74 | 38 | 28.12 | | | * 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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