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Individual Calculations September 2023 |
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| Arivoli, Aradhana Total change: 74.40 | |   |
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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 |
| 1330 | 1171 | 2.50 | 3 | 1.60 | 40 | 64.00 | |
|  Olson, David | | | 1188 | USA | 0.50 | 1 | 0.02 | 40 | 0.80 | |  Morello, Nicholas | | | 1399 | USA | 1.00 | 1 | 0.79 | 40 | 31.60 | | | Starr, Albert | | | 1403 | USA | 1.00 | 1 | 0.79 | 40 | 31.60 | |
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) | | | | 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 |
| 1410 | 1171 | 0.50 | 1 | 0.30 | 40 | 12.00 | |
| | Clark, Drew | | | 1410 | USA | 0.50 | 1 | 0.30 | 40 | 12.00 | |
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) | | | | XXXIII Pan-American Youth Chess Festival - Under 12 Female | Chicago, IL | USA | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1157 | 1171 | 1.00 | 2 | -0.04 | 40 | -1.60 | |
| | Ameller Flores, Catalina | | | 1127 | BOL | 0.50 | 1 | -0.06 | 40 | -2.40 | | | Torres Alarcon, Luciana Yanella | | | 1187 | PER | 0.50 | 1 | 0.02 | 40 | 0.80 | |
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) | | |
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