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| VII Torneo IRT Clasico Sub 2400 "Colegio Santisima Trinidad" | Lima | PER | 2023-09-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1405 | 1290 | 0.00 | 4 | -1.39 | 24 | -33.36 | |
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 Astoyauri De La Cruz, Fernando Is | | | 1425 | PER | 0.00 | 1 | -0.32 | 24 | -7.68 | |
| Paiva Benites, Felix Raul | | | 1493 | PER | 0.00 | 1 | -0.24 | 24 | -5.76 | |
| Tadeo Arontico, Jesus Raul | | | 1316 | PER | 0.00 | 1 | -0.46 | 24 | -11.04 | |
| Aguirre Pierola, Renato Paolo | | | 1386 | PER | 0.00 | 1 | -0.37 | 24 | -8.88 | |
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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| 7 Open IRT U2400 Circulo Peruano de Ajedrez | Lima | PER | 2023-10-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1398 | 1400 | 2.50 | 5 | 0.02 | 24 | 0.48 | |
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| Esteban Castro, Esther Raquel | | | 1368 | PER | 1.00 | 1 | 0.46 | 24 | 11.04 | |
 Bendezu Yupanqui, Albert Martin | | | 1758 | PER | 0.00 | 1 | -0.10 | 24 | -2.40 | |
| Ramirez Mori, Angel Farid | | | 1572 | PER | 0.00 | 1 | -0.27 | 24 | -6.48 | |
| Pumayauli Evangelista, Piero Jair | | | 1013 | PER | 1.00 | 1 | 0.09 | 24 | 2.16 | |
| Villaverde Salas, Gonzalo Matias | | | 1280 | PER | 0.50 | 1 | -0.16 | 24 | -3.84 | |
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 Sub 1800 Octubre Armagedon | Lima | PER | 2023-10-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1412 | 1400 | 3.00 | 6 | 0.10 | 24 | 2.40 | |
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| Trujillo Leon, Enrique Alipio | | | 1428 | PER | 0.50 | 1 | 0.04 | 24 | 0.96 | |
| Salas Gonzales, David Ademar | | | 1362 | PER | 1.00 | 1 | 0.45 | 24 | 10.80 | |
| Roman Robles, Nicolas Alexander | | | 1446 | PER | 0.00 | 1 | -0.44 | 24 | -10.56 | |
| Trujillo Leon, Enrique Alipio | | | 1428 | PER | 0.50 | 1 | 0.04 | 24 | 0.96 | |
| Salas Gonzales, David Ademar | | | 1362 | PER | 0.00 | 1 | -0.55 | 24 | -13.20 | |
| Roman Robles, Nicolas Alexander | | | 1446 | PER | 1.00 | 1 | 0.56 | 24 | 13.44 | |
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 Panamericano Armagedon | Lima | PER | 2023-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1461 | 1400 | 3.00 | 5 | 0.75 | 24 | 18.00 | |
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| Bedoya Rosales, Luis | | | 1879 | PER | 0.50 | 1 | 0.45 | 24 | 10.80 | |
| Quiroz Cerna, Alexis | | | 1615 | PER | 0.00 | 1 | -0.23 | 24 | -5.52 | |
| Rayme, Angulo Andres Joaquin | | | 1313 | PER | 0.50 | 1 | -0.12 | 24 | -2.88 | |
| Rocca Lino, Rafael Antonio Enki | | | 1100 | PER | 1.00 | 1 | 0.15 | 24 | 3.60 | |
| Calvo Arana, Ernesto | | | 1400 | PER | 1.00 | 1 | 0.50 | 24 | 12.00 | |
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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| XII Campeonato Panamericano Escolar de Ajedrez - Sub 11 Absoluto | Lima | PER | 2023-10-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1253 | 1400 | 4.50 | 9 | -1.54 | 24 | -36.96 | |
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| Aguila Fajardo, Hans Matthew | | | 1031 | PER | 1.00 | 1 | 0.10 | 24 | 2.40 | |
| Pinto Cajavilca, Willy Andre | | | 1124 | PER | 1.00 | 1 | 0.17 | 24 | 4.08 | |
| Huacce Rojas, Milwer Sebastian | | | 1203 | PER | 1.00 | 1 | 0.25 | 24 | 6.00 | |
| Vilca Contreras, Dante Ivan | | | 1556 | PER | 1.00 | 1 | 0.71 | 24 | 17.04 | |
| Ruiz Bolanos, Eithan | | | 1582 | MEX | 0.00 | 1 | -0.26 | 24 | -6.24 | |
| Llatas Parihuaman, Jose Maria | | | 1312 | PER | 0.00 | 1 | -0.62 | 24 | -14.88 | |
| Ydrogo Agreda, Gustavo Alonso | | | 1137 | PER | 0.50 | 1 | -0.32 | 24 | -7.68 | |
| Cortez Chuviru, Gael Marbel | | | 1233 | BOL | 0.00 | 1 | -0.72 | 24 | -17.28 | |
| Ortiz Barriales, Leonel Leyton | | | 1100 | PER | 0.00 | 1 | -0.85 | 24 | -20.40 | |
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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