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| 3 Open IRT U1800 Circulo Peruano de Ajedrez | Lima | PER | 2023-11-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1458 | 1286 | 4.00 | 7 | 1.84 | 30 | 55.20 | |
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 Gomez Jalixto, Matthew Yahir | | | 1151 | PER | 1.00 | 1 | 0.32 | 30 | 9.60 | |
| Salazar Flores, Yerick Alexander | | | 1666 | PER | 0.00 | 1 | -0.09 | 30 | -2.70 | |
 Ramirez Espino, Gian Sandro | | | 1458 | PER | 0.50 | 1 | 0.23 | 30 | 6.90 | |
| Uchasara Apolinario, Josue Yoni | | | 1235 | PER | 1.00 | 1 | 0.43 | 30 | 12.90 | |
| Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.50 | 1 | 0.43 | 30 | 12.90 | |
| Villaverde Salas, Gonzalo Matias | | | 1443 | PER | 1.00 | 1 | 0.71 | 30 | 21.30 | |
| Navarro Maldonado, Monica Dayana | | | 1539 | VEN | 0.00 | 1 | -0.19 | 30 | -5.70 | |
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 - U12 Absoluto | Florianopolis SC | BRA | 2023-12-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1521 | 1340 | 5.50 | 9 | 2.23 | 30 | 66.90 | |
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| Ayala Delgado, Sergio Alejandro | | | 2194 | COL | 0.00 | 1 | 0.00 | 30 | 0.00 | |
| Alvan Silva, Dereck Alexander | | | 1158 | PER | 1.00 | 1 | 0.26 | 30 | 7.80 | |
| Sanchez Negreiros, Alejandro Gust | | | 1018 | PER | 1.00 | 1 | 0.13 | 30 | 3.90 | |
| Mattos, Bernardo Cunha | | | 1643 | BRA | 1.00 | 1 | 0.86 | 30 | 25.80 | |
| Vilca Contreras, Dante Ivan | | | 1547 | PER | 0.00 | 1 | -0.23 | 30 | -6.90 | |
| Jardim, Frederico Rodrigues | | | 1931 | BRA | 0.00 | 1 | -0.02 | 30 | -0.60 | |
| Lopez Vivanco, Gregorio | | | 1188 | CHI | 1.00 | 1 | 0.30 | 30 | 9.00 | |
| Chiarotti, Ginno | | | 1426 | ARG | 1.00 | 1 | 0.62 | 30 | 18.60 | |
| Dos Santos, Felipe Zeuli Biller | | | 1587 | BRA | 0.50 | 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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| IV Campeonato Sudamericano Escolar de Ajedrez 2023 - Sub 13 Absoluto | Lima | PER | 2023-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1262 | 1340 | 3.50 | 7 | -0.86 | 30 | -25.80 | |
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| Reyes Zavaleta, Cristhian Yamil | | | 1862 | PER | 0.00 | 1 | -0.03 | 30 | -0.90 | |
| Gomez Jalixto, Matthew Yahir | | | 1151 | PER | 1.00 | 1 | 0.25 | 30 | 7.50 | |
| Marcelo Poma, Jaden Eduardo | | | 1232 | PER | 0.00 | 1 | -0.65 | 30 | -19.50 | |
| Cardenas Huachaca, Alessandro Jai | | | 1331 | PER | 0.00 | 1 | -0.51 | 30 | -15.30 | |
| Cortez Cucho, Ian Adrian | | | 1015 | PER | 1.00 | 1 | 0.13 | 30 | 3.90 | |
| Pinto Vera, Jesus Nabih | | | 1103 | PER | 1.00 | 1 | 0.20 | 30 | 6.00 | |
| Cisneros Vargas, Gabriel Jesus | | | 1143 | PER | 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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