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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 |
| 1292 | 1151 | 2.00 | 7 | -0.22 | 33 | -7.26 | |
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 Meneses Morales, Marcos Beltran | | | 1351 | PER | 0.50 | 1 | 0.26 | 33 | 8.58 | |
 Takahashi Guevara, Javier Kazuo | | | 1176 | PER | 0.00 | 1 | -0.47 | 33 | -15.51 | |
| Cahuaya Alpes, William Rafael | | | 1227 | PER | 0.00 | 1 | -0.40 | 33 | -13.20 | |
| Valdez Maravi, Angel Yhadiel | | | 1234 | PER | 0.00 | 1 | -0.39 | 33 | -12.87 | |
| Rayme, Angulo Andres Joaquin | | | 1359 | PER | 1.00 | 1 | 0.77 | 33 | 25.41 | |
| Salas Gonzales, David Ademar | | | 1372 | PER | 0.50 | 1 | 0.28 | 33 | 9.24 | |
| Cardenas Huachaca, Alessandro Jai | | | 1328 | PER | 0.00 | 1 | -0.27 | 33 | -8.91 | |
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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| 3 Open IRT U1800 Circulo Peruano de Ajedrez | Lima | PER | 2023-11-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1388 | 1151 | 0.50 | 8 | -1.38 | 33 | -45.54 | |
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| Salazar Flores, Yerick Alexander | | | 1666 | PER | 0.00 | 1 | -0.04 | 33 | -1.32 | |
| Reyes Zavaleta, Sergio Gabriel | | | 1286 | PER | 0.00 | 1 | -0.32 | 33 | -10.56 | |
| Villaverde Salas, Gonzalo Matias | | | 1443 | PER | 0.00 | 1 | -0.15 | 33 | -4.95 | |
| Rojas Salas, Rihanna Irina | | | 1261 | PER | 0.00 | 1 | -0.35 | 33 | -11.55 | |
| Callupe Matias, Obed Esteban | | | 1213 | PER | 0.50 | 1 | 0.09 | 33 | 2.97 | |
| Uchasara Apolinario, Josue Yoni | | | 1235 | PER | 0.00 | 1 | -0.38 | 33 | -12.54 | |
| Navarro Maldonado, Monica Dayana | | | 1539 | VEN | 0.00 | 1 | -0.09 | 33 | -2.97 | |
| Ramirez Espino, Gian Sandro | | | 1458 | PER | 0.00 | 1 | -0.14 | 33 | -4.62 | |
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 |
| 1308 | 1151 | 1.50 | 6 | -0.39 | 33 | -12.87 | |
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| Ccana Minauro, Wernher Sebastian | | | 1527 | PER | 0.00 | 1 | -0.09 | 33 | -2.97 | |
| Reyes Zavaleta, Sergio Gabriel | | | 1340 | PER | 0.00 | 1 | -0.25 | 33 | -8.25 | |
| Anchelia Anchivilca, Gabriel Jesu | | | 1040 | PER | 0.50 | 1 | -0.15 | 33 | -4.95 | |
| Choque Aparco, Esteban Abel | | | 1355 | PER | 0.50 | 1 | 0.26 | 33 | 8.58 | |
| Robles Cucho, Argen Stefano | | | 1433 | PER | 0.00 | 1 | -0.16 | 33 | -5.28 | |
| Zambrano Olmedo, Diego Andres | | | 1151 | ECU | 0.50 | 1 | 0.00 | 33 | 0.00 | |
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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