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| I Open IRT Club Regatas sub 2400 | Lima | PER | 2023-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1269 | 1390 | 2.50 | 4 | -0.09 | 30 | -2.70 | |
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 Bendezu Yupanqui, Albert Martin | | | 1678 | PER | 0.00 | 1 | -0.16 | 30 | -4.80 | |
 Torres Alarcon, Luciana Yanella | | | 1165 | PER | 0.50 | 1 | -0.28 | 30 | -8.40 | |
| Figueroa Penny, Antonio Alfredo | | | 1178 | PER | 1.00 | 1 | 0.23 | 30 | 6.90 | |
| Callupe Matias, Obed Esteban | | | 1056 | PER | 1.00 | 1 | 0.12 | 30 | 3.60 | |
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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| XIV Festival Internacional de Ajedrez Claretiano 2023 Sub - 16 | Lima | PER | 2023-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1487 | 1390 | 2.00 | 5 | 0.13 | 30 | 3.90 | |
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| Zapana Huarza, Fabricio Elvis | | | 1506 | PER | 0.50 | 1 | 0.16 | 30 | 4.80 | |
| Janampa Javier, Brandon Daniel | | | 1639 | PER | 0.50 | 1 | 0.31 | 30 | 9.30 | |
| Zapata Romero, Italo German | | | 1585 | PER | 0.00 | 1 | -0.25 | 30 | -7.50 | |
| Anticona Bocanegra, Fabrizio Aaro | | | 1224 | PER | 1.00 | 1 | 0.28 | 30 | 8.40 | |
| Vega Castillo, Luis Angel Juniur | | | 1482 | PER | 0.00 | 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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| I FESTIVAL DE AJEDREZ IRTS CLASICOS RENE DESCARTES SUB 1400 | Lima | PER | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1283 | 1335 | 3.00 | 6 | -0.43 | 30 | -12.90 | |
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| Suarez Chavez, Alejandro | | | 1229 | PER | 1.00 | 1 | 0.36 | 30 | 10.80 | |
| Casqui Lopez, Pamela Grace | | | 1256 | PER | 1.00 | 1 | 0.39 | 30 | 11.70 | |
| Raime Tanta, Jhonathan Alexander | | | 1309 | PER | 0.50 | 1 | -0.04 | 30 | -1.20 | |
| Torres Salazar, Jhon Hollsen | | | 1318 | PER | 0.00 | 1 | -0.52 | 30 | -15.60 | |
| Wochiny Reyes, Joaquin Alessandro | | | 1227 | PER | 0.50 | 1 | -0.15 | 30 | -4.50 | |
| Salas Gonzales, David Ademar | | | 1356 | PER | 0.00 | 1 | -0.47 | 30 | -14.10 | |
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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| Campeonato Regional de Ajedrez Metropolitano Impar Sub 13 Absoluto | Lima | PER | 2023-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1169 | 1335 | 1.00 | 3 | -1.13 | 30 | -33.90 | |
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| Rodriguez Zamudio, Zahir Joelson | | | 1160 | PER | 1.00 | 1 | 0.27 | 30 | 8.10 | |
| Poma Bernal, Cristian Andres | | | 1278 | PER | 0.00 | 1 | -0.58 | 30 | -17.40 | |
| Marcelo Poma, Jaden Eduardo | | | 1068 | PER | 0.00 | 1 | -0.82 | 30 | -24.60 | |
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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| IRT Clasico Agosto Armagedon | Lima | PER | 2023-08-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1398 | 1335 | 2.00 | 5 | -0.14 | 30 | -4.20 | |
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| Villavicencio Luna Victoria, Fern | | | 1017 | PER | 1.00 | 1 | 0.13 | 30 | 3.90 | |
| Ramirez Mori, Angel Farid | | | 1476 | PER | 0.00 | 1 | -0.31 | 30 | -9.30 | |
| Arenas Lavado, Luciana Andrea | | | 1534 | PER | 0.00 | 1 | -0.24 | 30 | -7.20 | |
| Rayme, Angulo Andres Joaquin | | | 1238 | PER | 1.00 | 1 | 0.37 | 30 | 11.10 | |
| Saenz Ayllon, Ivan David | | | 1723 | PER | 0.00 | 1 | -0.09 | 30 | -2.70 | |
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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