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Individual Calculations September 2023 |
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| Olson, David Total change: -22.40 | |   |
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| WIM Ruth Haring Memorial Tuesday Night Marathon - 1200 to 1599 Round 1-3 | San Francisco, CA | USA | 2023-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1327 | 1188 | 0.50 | 3 | -0.47 | 20 | -9.40 | |
|  Arivoli, Aradhana | | | 1171 | USA | 0.50 | 1 | -0.02 | 20 | -0.40 | |  Brickhouse, Christian | | | 1383 | USA | 0.00 | 1 | -0.25 | 20 | -5.00 | | | Karwat, Joseph | | | 1427 | USA | 0.00 | 1 | -0.20 | 20 | -4.00 | |
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) | | | | WIM Ruth Haring Memorial Tuesday Night Marathon - 1200 to 1599 Round 4-7 | San Francisco, CA | USA | 2023-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1080 | 1188 | 0.00 | 1 | -0.65 | 20 | -13.00 | |
| | Raahemifar, Keyan | | | 1080 | USA | 0.00 | 1 | -0.65 | 20 | -13.00 | |
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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