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Individual Calculations September 2023 |
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| Anderson, Michael Total change: -44.20 | |   |
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| 2023 Calchess Senior Championship | Berkeley, Ca | USA | 2023-06-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1611 | 1780 | 0.00 | 1 | -0.72 | 20 | -14.40 | |
|  Cooper, Lee | | | 1611 | USA | 0.00 | 1 | -0.72 | 20 | -14.40 | |
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 - Over 2000 Round 1-3 | San Francisco, CA | USA | 2023-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1947 | 1712 | 0.00 | 2 | -0.43 | 20 | -8.60 | |
| | Handigol, Abhishek | | | 1872 | USA | 0.00 | 1 | -0.29 | 20 | -5.80 | |  Winslow, Elliott | m | | 2021 | USA | 0.00 | 1 | -0.14 | 20 | -2.80 | |
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 - Over 2000 Round 4-7 | San Francisco, CA | USA | 2023-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1701 | 1712 | 1.00 | 4 | -1.06 | 20 | -21.20 | |
| | Qiu, Laurie | | | 1721 | USA | 0.00 | 1 | -0.49 | 20 | -9.80 | | | Zhou, Ivan | | | 1625 | USA | 0.00 | 1 | -0.62 | 20 | -12.40 | | | Lewis, Edward | | | 1798 | USA | 0.00 | 1 | -0.38 | 20 | -7.60 | | | Parsons, Stephen | | | 1661 | USA | 1.00 | 1 | 0.43 | 20 | 8.60 | |
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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