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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 |
| 1375 | 1003 | 1.00 | 4 | 0.26 | 31 | 8.06 | |
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 Bocanegra Reyes, Thiago Stephano | | | 1182 | PER | 0.00 | 1 | -0.27 | 31 | -8.37 | |
 Garay Ramirez, Patrick Yosue | | | 1097 | PER | 0.50 | 1 | 0.13 | 31 | 4.03 | |
| Reyes Zavaleta, Cristhian Yamil | | | 1857 | PER | 0.00 | 1 | 0.00 | 31 | 0.00 | |
| Salas Gonzales, David Ademar | | | 1362 | PER | 0.50 | 1 | 0.40 | 31 | 12.40 | |
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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| 2 Open IRT U2400 Club Regatas Lima | Lima | PER | 2023-10-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1634 | 1003 | 0.00 | 2 | -0.04 | 31 | -1.24 | |
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| Bendezu Yupanqui, Albert Martin | | | 1758 | PER | 0.00 | 1 | 0.00 | 31 | 0.00 | |
| Ccana Minauro, Wernher Sebastian | | | 1510 | PER | 0.00 | 1 | -0.04 | 31 | -1.24 | |
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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| 1 IRT Cerrado U1200 Circulo Peruano de Ajedrez Grupo B | Lima | PER | 2023-10-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1104 | 1003 | 1.50 | 5 | -0.36 | 31 | -11.16 | |
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| Carbajal Sotomayor, Cesar Stefano | | | 1042 | PER | 0.50 | 1 | 0.05 | 31 | 1.55 | |
| Salazar Ramirez, Leonardo Gabriel | | | 1009 | PER | 0.50 | 1 | 0.01 | 31 | 0.31 | |
| Mayo, Zevallos Salvador Andres | | | 1077 | PER | 0.50 | 1 | 0.10 | 31 | 3.10 | |
| Garay Ramirez, Patrick Yosue | | | 1097 | PER | 0.00 | 1 | -0.37 | 31 | -11.47 | |
| Uchasara Apolinario, Josue Yoni | | | 1295 | PER | 0.00 | 1 | -0.15 | 31 | -4.65 | |
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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| IRT Panamericano Armagedon | Lima | PER | 2023-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1438 | 1003 | 0.00 | 2 | -0.13 | 31 | -4.03 | |
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| Ponciano Madueno, Luis Felipe | | | 1409 | PER | 0.00 | 1 | -0.08 | 31 | -2.48 | |
| Bringas Flores, Fidel | | | 1467 | ESP | 0.00 | 1 | -0.05 | 31 | -1.55 | |
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 |
| 1262 | 1003 | 5.00 | 9 | 3.28 | 31 | 101.68 | |
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| Atiencia Merino, Jose Luis | | | 1301 | ECU | 1.00 | 1 | 0.85 | 31 | 26.35 | |
| Cortez Chuviru, Gael Marbel | | | 1233 | BOL | 0.50 | 1 | 0.29 | 31 | 8.99 | |
| Alvarez Orellana, Isai Jeremi | | | 1420 | BOL | 1.00 | 1 | 0.93 | 31 | 28.83 | |
| Castillo Perales, Bernardo Jonay | | | 1290 | PER | 0.50 | 1 | 0.34 | 31 | 10.54 | |
| Nunez Pariona, Thiago Williams | | | 1284 | PER | 0.50 | 1 | 0.34 | 31 | 10.54 | |
| Jara Pino, Mateo Stefano | | | 1319 | PER | 0.00 | 1 | -0.13 | 31 | -4.03 | |
| Takahashi Guevara, Javier Kazuo | | | 1166 | PER | 0.50 | 1 | 0.22 | 31 | 6.82 | |
| Ortega Rueda, Nicolas | | | 1198 | COL | 0.50 | 1 | 0.25 | 31 | 7.75 | |
| Urpeque Guzman, Zayaka Isabel | | | 1145 | PER | 0.50 | 1 | 0.19 | 31 | 5.89 | |
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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