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| 1 Open IRT U1200 Circulo Peruano de Ajedrez | Lima | PER | 2023-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1089 | 1096 | 3.00 | 5 | 0.46 | 33 | 15.18 | |
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 Canahua Supo, Rodrigo Jose | | | 1053 | PER | 1.00 | 1 | 0.44 | 33 | 14.52 | |
| Cahuaya Alpes, Kiara Hamile | | | 1076 | PER | 0.50 | 1 | -0.03 | 33 | -0.99 | |
 Olazo Ricra, Leninka Estefany | | | 1150 | PER | 1.00 | 1 | 0.58 | 33 | 19.14 | |
| Alvarado Torres, Sandro Santiago | | | 1109 | PER | 0.50 | 1 | 0.02 | 33 | 0.66 | |
| Montero Ricra, Kevin Johan | | | 1057 | PER | 0.00 | 1 | -0.55 | 33 | -18.15 | |
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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| 2 Open IRT U1200 Circulo Peruano de Ajedrez | Lima | PER | 2023-11-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1121 | 1096 | 5.50 | 7 | 2.24 | 33 | 73.92 | |
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| Sotelo Reyna, Alberto David | | | 1190 | PER | 0.50 | 1 | 0.13 | 33 | 4.29 | |
| Guevara Huamani, Angello Mohises | | | 1050 | PER | 1.00 | 1 | 0.44 | 33 | 14.52 | |
| Casimiro Villavicencio, Moises Ed | | | 1070 | PER | 1.00 | 1 | 0.46 | 33 | 15.18 | |
| Dongo Ccorahua, Leonardo Bruno | | | 1097 | PER | 0.50 | 1 | 0.00 | 33 | 0.00 | |
| Gutierrez Quispe, Benjamin Matias | | | 1114 | PER | 1.00 | 1 | 0.53 | 33 | 17.49 | |
| Bocanegra Reyes, Thiago Stephano | | | 1163 | PER | 1.00 | 1 | 0.59 | 33 | 19.47 | |
| Garay Ramirez, Patrick Yosue | | | 1162 | PER | 0.50 | 1 | 0.09 | 33 | 2.97 | |
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 |
| 1540 | 1232 | 1.00 | 6 | -0.01 | 33 | -0.33 | |
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| Ramirez Mori, Angel Farid | | | 1546 | PER | 0.00 | 1 | -0.14 | 33 | -4.62 | |
| Salas Gonzales, David Ademar | | | 1514 | PER | 0.00 | 1 | -0.16 | 33 | -5.28 | |
| Rojas Salas, Rihanna Irina | | | 1261 | PER | 0.00 | 1 | -0.46 | 33 | -15.18 | |
| Navarro Maldonado, Monica Dayana | | | 1539 | VEN | 1.00 | 1 | 0.86 | 33 | 28.38 | |
| Salazar Flores, Yerick Alexander | | | 1666 | PER | 0.00 | 1 | -0.06 | 33 | -1.98 | |
| Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.00 | 1 | -0.05 | 33 | -1.65 | |
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 11 Absoluto | Lima | PER | 2023-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1054 | 1232 | 1.00 | 3 | -1.20 | 33 | -39.60 | |
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| Daza Atencia, Mathias David | | | 1012 | PER | 0.50 | 1 | -0.28 | 33 | -9.24 | |
| Salazar Flores, Adiel Jesus | | | 1109 | PER | 0.00 | 1 | -0.67 | 33 | -22.11 | |
| Aguila Fajardo, Hans Matthew | | | 1040 | PER | 0.50 | 1 | -0.25 | 33 | -8.25 | |
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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