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Individual Calculations September 2023 |
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| Chovanec, Alice Total change: -7.20 | |   |
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| July-August 2023 Marshall Monday Rounds 1-3 | New York, NY | USA | 2023-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1923 | 1599 | 0.00 | 1 | -0.13 | 40 | -5.20 | |
|  Vogel, Jacob | | | 1923 | USA | 0.00 | 1 | -0.13 | 40 | -5.20 | |
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) | | | | 1st Annual Pennsylvania Classic | Langhorne, Pennsylvania | USA | 2023-07-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1780 | 1599 | 2.50 | 5 | 0.97 | 40 | 38.80 | |
|  Kiren, Nasta | | | 2008 | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Guido, Kampel | | | 1894 | ARG | 0.50 | 1 | 0.35 | 40 | 14.00 | | | Lilianna, Gao | | | 1373 | USA | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Michael, Stefanello | | | 1663 | USA | 1.00 | 1 | 0.59 | 40 | 23.60 | | | Benjamin, Johnson | | | 1961 | USA | 0.00 | 1 | -0.10 | 40 | -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) | | | | July-August 2023 Marshall Monday Rounds 4-6 | New York, NY | USA | 2023-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1640 | 1599 | 0.50 | 2 | -0.39 | 40 | -15.60 | |
| | Wong, Wyatt | | | 1605 | USA | 0.00 | 1 | -0.49 | 40 | -19.60 | | | Baalla, Nura | | | 1674 | USA | 0.50 | 1 | 0.10 | 40 | 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) | | | | XXXIII Pan-American Youth Chess Festival - Under 10 Female | Chicago, IL | USA | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1552 | 1590 | 2.00 | 6 | -1.23 | 40 | -49.20 | |
| | Guzman Garcia, Mia Fernanda | | | 1733 | MEX | 0.50 | 1 | 0.19 | 40 | 7.60 | | | Yang, Aimee | | | 1598 | USA | 0.50 | 1 | 0.01 | 40 | 0.40 | | | Zhu, Alicia | | | 1232 | USA | 1.00 | 1 | 0.10 | 40 | 4.00 | | | Qiu, Laura | | | 1721 | USA | 0.00 | 1 | -0.32 | 40 | -12.80 | | | Qian, Ashley | | | 1496 | CAN | 0.00 | 1 | -0.63 | 40 | -25.20 | | | Xu, Melissa | | | 1532 | USA | 0.00 | 1 | -0.58 | 40 | -23.20 | |
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) | | | | 55th annual Atlantic Open - U2100 | Reston, VA | USA | 2023-08-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1593 | 1590 | 2.00 | 3 | 0.60 | 40 | 24.00 | |
| | Huang, Lulu | | | 1195 | USA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Fischer, Robert J | | | 1801 | USA | 0.50 | 1 | 0.27 | 40 | 10.80 | | | Kothapalli, Pradhyumna Kumar | | | 1784 | IND | 0.50 | 1 | 0.25 | 40 | 10.00 | |
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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