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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 |
| 1389 | 1372 | 4.00 | 8 | 0.11 | 30 | 3.30 | |
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 Callupe Matias, Obed Esteban | | | 1213 | PER | 1.00 | 1 | 0.29 | 30 | 8.70 | |
 Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.50 | 1 | 0.38 | 30 | 11.40 | |
| Rayme, Angulo Andres Joaquin | | | 1359 | PER | 1.00 | 1 | 0.48 | 30 | 14.40 | |
| Ramirez Mori, Angel Farid | | | 1530 | PER | 0.00 | 1 | -0.29 | 30 | -8.70 | |
| Cardenas Huachaca, Alessandro Jai | | | 1328 | PER | 0.00 | 1 | -0.56 | 30 | -16.80 | |
| Herrada, Blanco Maria Fernanda | | | 1593 | PER | 0.00 | 1 | -0.22 | 30 | -6.60 | |
| Gomez Jalixto, Matthew Yahir | | | 1151 | PER | 0.50 | 1 | -0.28 | 30 | -8.40 | |
| Cahuaya Alpes, William Rafael | | | 1227 | PER | 1.00 | 1 | 0.31 | 30 | 9.30 | |
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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| 4 Open IRT U1800 Circulo Peruano de Ajedrez | Lima | PER | 2023-12-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1438 | 1514 | 3.50 | 6 | 0.00 | 30 | 0.00 | |
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| Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.00 | 1 | -0.24 | 30 | -7.20 | |
| Rojas Salas, Rihanna Irina | | | 1261 | PER | 1.00 | 1 | 0.19 | 30 | 5.70 | |
| Ramirez Mori, Jael Eduardo | | | 1232 | PER | 1.00 | 1 | 0.16 | 30 | 4.80 | |
| Salazar Flores, Yerick Alexander | | | 1666 | PER | 0.50 | 1 | 0.20 | 30 | 6.00 | |
| Ramirez Mori, Angel Farid | | | 1546 | PER | 1.00 | 1 | 0.54 | 30 | 16.20 | |
| Callupe Matias, Obed Esteban | | | 1213 | PER | 0.00 | 1 | -0.85 | 30 | -25.50 | |
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 13 Absoluto | Lima | PER | 2023-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1383 | 1514 | 5.00 | 9 | -0.96 | 30 | -28.80 | |
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| Zambrano Olmedo, Diego Andres | | | 1151 | ECU | 1.00 | 1 | 0.10 | 30 | 3.00 | |
| Ayala Aranibar, Adrian Alexander | | | 1317 | PER | 1.00 | 1 | 0.25 | 30 | 7.50 | |
| Ccana Minauro, Reiben Andre | | | 1349 | PER | 0.50 | 1 | -0.22 | 30 | -6.60 | |
| Reyes Zavaleta, Cristhian Yamil | | | 1862 | PER | 0.00 | 1 | -0.11 | 30 | -3.30 | |
| Wochiny Reyes, Joaquin Alessandro | | | 1292 | PER | 0.50 | 1 | -0.28 | 30 | -8.40 | |
| Sotelo Reyna, Alberto David | | | 1190 | PER | 1.00 | 1 | 0.13 | 30 | 3.90 | |
| Banda Chahuara, Keops | | | 1319 | PER | 0.50 | 1 | -0.25 | 30 | -7.50 | |
| Villaverde Salas, Gonzalo Matias | | | 1443 | PER | 0.50 | 1 | -0.10 | 30 | -3.00 | |
| Ccana Minauro, Wernher Sebastian | | | 1527 | PER | 0.00 | 1 | -0.48 | 30 | -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) |
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