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| 2 Open IRT U1800 Circulo Peruano de Ajedrez | Lima | PER | 2023-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1423 | 1593 | 5.50 | 8 | -0.02 | 30 | -0.60 | |
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 Cahuaya Alpes, William Rafael | | | 1227 | PER | 1.00 | 1 | 0.10 | 30 | 3.00 | |
 Rojas Salas, Rihanna Irina | | | 1261 | PER | 1.00 | 1 | 0.12 | 30 | 3.60 | |
| Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.00 | 1 | -0.34 | 30 | -10.20 | |
| Callupe Matias, Obed Esteban | | | 1213 | PER | 1.00 | 1 | 0.09 | 30 | 2.70 | |
| Lapa Cunias, Marco Antonio | | | 1594 | PER | 0.50 | 1 | 0.00 | 30 | 0.00 | |
| Salas Gonzales, David Ademar | | | 1372 | PER | 1.00 | 1 | 0.22 | 30 | 6.60 | |
| Cardenas Huachaca, Alessandro Jai | | | 1328 | PER | 1.00 | 1 | 0.18 | 30 | 5.40 | |
| Bendezu Yupanqui, Albert Martin | | | 1676 | PER | 0.00 | 1 | -0.39 | 30 | -11.70 | |
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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| XIX Festival Sul-Americano da Juventude 2023 STD - U14 Feminino | Florianopolis SC | BRA | 2023-12-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1574 | 1579 | 4.50 | 8 | 0.47 | 30 | 14.10 | |
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| Villegas Garcia, Renata Alejandra | | | 1294 | BOL | 1.00 | 1 | 0.16 | 30 | 4.80 | |
| Mayeregger Gonzalez, Fiorella | | | 1464 | PAR | 1.00 | 1 | 0.34 | 30 | 10.20 | |
| Morales Perez, Ghisell | | | 1705 | COL | 0.00 | 1 | -0.33 | 30 | -9.90 | |
| Acuna Alarcon, Claudia Micaela | | | 1526 | PER | 1.00 | 1 | 0.43 | 30 | 12.90 | |
| Pavao, Alice Lara Biasi | | | 1551 | BRA | 0.50 | 1 | -0.04 | 30 | -1.20 | |
| Da Costa, Mariana Nara Santana | | | 1528 | BRA | 0.50 | 1 | -0.07 | 30 | -2.10 | |
| Silva, Juliana Figueira Theophilo | | | 1753 | BRA | 0.00 | 1 | -0.27 | 30 | -8.10 | |
| Tobares Dilascio, Oriana Helena | | | 1769 | ARG | 0.50 | 1 | 0.25 | 30 | 7.50 | |
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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| IV Campeonato Sudamericano Escolar de Ajedrez 2023 - Sub 15 Femenino | Lima | PER | 2023-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1389 | 1579 | 4.50 | 7 | -0.62 | 30 | -18.60 | |
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| Ramos Quispe, Paola Gina | | | 1356 | PER | 0.50 | 1 | -0.28 | 30 | -8.40 | |
| Sanchez Cruz, Mireya Jassly | | | 1530 | PER | 1.00 | 1 | 0.43 | 30 | 12.90 | |
| Jacome Cueva, Mariah Fernanda | | | 1286 | PER | 0.50 | 1 | -0.35 | 30 | -10.50 | |
| Sotelo Leon, Ester Victoria | | | 1463 | PER | 0.00 | 1 | -0.66 | 30 | -19.80 | |
| Norabuena Ticona, Gabriela Paola | | | 1421 | PER | 0.50 | 1 | -0.21 | 30 | -6.30 | |
| Rojas Quispe, Heidy Xiomara Jazmi | | | 1180 | PER | 1.00 | 1 | 0.08 | 30 | 2.40 | |
| Esteban Castro, Esther Raquel | | | 1484 | PER | 1.00 | 1 | 0.37 | 30 | 11.10 | |
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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