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| 4 Open IRT U2400 Circulo Peruano de Ajedrez | Lima | PER | 2023-06-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1353 | 1291 | 3.00 | 6 | 0.47 | 29 | 13.63 | |
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 Vilca Contreras, Dante Ivan | | | 1550 | PER | 0.00 | 1 | -0.18 | 29 | -5.22 | |
 Salazar Ramirez, Leonardo Gabriel | | | 1028 | PER | 1.00 | 1 | 0.18 | 29 | 5.22 | |
| Herrada, Blanco Maria Fernanda | | | 1566 | PER | 0.00 | 1 | -0.17 | 29 | -4.93 | |
| Meneses Morales, Marcos Beltran | | | 1109 | PER | 1.00 | 1 | 0.26 | 29 | 7.54 | |
| Ramirez Espino, Gian Sandro | | | 1432 | PER | 0.50 | 1 | 0.19 | 29 | 5.51 | |
| Salas Gonzales, David Ademar | | | 1434 | PER | 0.50 | 1 | 0.19 | 29 | 5.51 | |
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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| V Open IRT Circulo Peruano de Ajedrez sub 2400 | Lima | PER | 2023-07-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1422 | 1291 | 4.00 | 6 | 1.40 | 29 | 40.60 | |
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| Callupe Matias, Obed Esteban | | | 1056 | PER | 1.00 | 1 | 0.21 | 29 | 6.09 | |
| Carbajal Sotomayor, Cesar Stefano | | | 1119 | PER | 1.00 | 1 | 0.27 | 29 | 7.83 | |
| Ramirez Mori, Angel Farid | | | 1384 | PER | 1.00 | 1 | 0.63 | 29 | 18.27 | |
| Suarez Chavez, Alejandro | | | 1173 | PER | 1.00 | 1 | 0.34 | 29 | 9.86 | |
| Reyes Zavaleta, Fabian Ricardo | | | 2026 | PER | 0.00 | 1 | -0.01 | 29 | -0.29 | |
| Caceres Sandoval, Eduardo | | | 1776 | PER | 0.00 | 1 | -0.04 | 29 | -1.16 | |
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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| VI Open IRT Circulo Peruano de Ajedrez sub 2400 | Lima | PER | 2023-07-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1460 | 1291 | 3.00 | 5 | 1.07 | 29 | 31.03 | |
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| Jimenez Salas, Maria Teresa | | wf | 1894 | PER | 0.00 | 1 | -0.02 | 29 | -0.58 | |
| Carbajal Sotomayor, Cesar Stefano | | | 1119 | PER | 1.00 | 1 | 0.27 | 29 | 7.83 | |
| Coaquira Gonzales, Oscar Adriano | | | 1236 | PER | 1.00 | 1 | 0.42 | 29 | 12.18 | |
| Rojas Salas, Rihanna Irina | | | 1242 | PER | 1.00 | 1 | 0.43 | 29 | 12.47 | |
| Reyes Zavaleta, Cristhian Yamil | | | 1810 | PER | 0.00 | 1 | -0.03 | 29 | -0.87 | |
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 Nacional de Ajedrez Impar 2023 - Sub 13 Absoluto | Lima | PER | 2023-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1065 | 1291 | 3.00 | 7 | -2.47 | 29 | -71.63 | |
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| Callupe Matias, Obed Esteban | | | 1056 | PER | 0.00 | 1 | -0.79 | 29 | -22.91 | |
| Pinto Vera, Jesus Nabih | | | 1025 | PER | 1.00 | 1 | 0.18 | 29 | 5.22 | |
| Cahuaya Alpes, William Rafael | | | 1122 | PER | 0.50 | 1 | -0.22 | 29 | -6.38 | |
| Ayala Aranibar, Adrian Alexander | | | 1068 | PER | 0.50 | 1 | -0.28 | 29 | -8.12 | |
| Espiritu, Laureano Pier Davide | | | 1103 | PER | 0.00 | 1 | -0.74 | 29 | -21.46 | |
| Marcelo Poma, Jaden Eduardo | | | 1029 | PER | 0.00 | 1 | -0.82 | 29 | -23.78 | |
| Mamani Sanchez, Rony Leandro | | | 1052 | PER | 1.00 | 1 | 0.20 | 29 | 5.80 | |
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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