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| 2 Open IRT U1800 Circulo Peruano de Ajedrez | Lima | PER | 2023-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1421 | 1530 | 6.50 | 9 | 0.86 | 28 | 24.08 | |
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 Valdez Maravi, Angel Yhadiel | | | 1234 | PER | 1.00 | 1 | 0.15 | 28 | 4.20 | |
 Castillo Vasquez, Abel Vanner | | | 1278 | PER | 1.00 | 1 | 0.19 | 28 | 5.32 | |
| Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.50 | 1 | 0.24 | 28 | 6.72 | |
| Salas Gonzales, David Ademar | | | 1372 | PER | 1.00 | 1 | 0.29 | 28 | 8.12 | |
| De La Cruz De La Roca, Alan Rafae | | | 1420 | PER | 1.00 | 1 | 0.35 | 28 | 9.80 | |
| Bendezu Yupanqui, Albert Martin | | | 1676 | PER | 0.00 | 1 | -0.30 | 28 | -8.40 | |
| Cardenas Huachaca, Alessandro Jai | | | 1328 | PER | 0.00 | 1 | -0.76 | 28 | -21.28 | |
| Lapa Cunias, Marco Antonio | | | 1594 | PER | 1.00 | 1 | 0.59 | 28 | 16.52 | |
| Takahashi Guevara, Javier Kazuo | | | 1176 | PER | 1.00 | 1 | 0.11 | 28 | 3.08 | |
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 |
| 1448 | 1546 | 4.50 | 7 | 0.25 | 28 | 7.00 | |
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| Ramirez Mori, Jael Eduardo | | | 1232 | PER | 1.00 | 1 | 0.14 | 28 | 3.92 | |
| Navarro Maldonado, Monica Dayana | | | 1539 | VEN | 1.00 | 1 | 0.49 | 28 | 13.72 | |
| Salazar Flores, Yerick Alexander | | | 1666 | PER | 0.00 | 1 | -0.34 | 28 | -9.52 | |
| Garay Ramirez, Estefano Javier | | | 1712 | PER | 0.50 | 1 | 0.22 | 28 | 6.16 | |
| Salas Gonzales, David Ademar | | | 1514 | PER | 0.00 | 1 | -0.54 | 28 | -15.12 | |
| Rojas Salas, Rihanna Irina | | | 1261 | PER | 1.00 | 1 | 0.16 | 28 | 4.48 | |
| Callupe Matias, Obed Esteban | | | 1213 | PER | 1.00 | 1 | 0.12 | 28 | 3.36 | |
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 15 Absoluto | Lima | PER | 2023-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1580 | 1546 | 6.00 | 9 | 2.00 | 28 | 56.00 | |
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| Tacca Aller, Andriu Ariel | | | 1146 * | PER | 1.00 | 1 | 0.08 | 28 | 2.24 | |
| Palomino Landeo, Diego Fernando | | | 1711 | PER | 0.00 | 1 | -0.28 | 28 | -7.84 | |
| Hurunaga Gutierrez, Massimo Adam | | | 1168 | PER | 1.00 | 1 | 0.09 | 28 | 2.52 | |
| Diaz Bermudez, Pedro Teofilo | | | 1428 | PER | 1.00 | 1 | 0.34 | 28 | 9.52 | |
| Cardenas, Lima Vincent Matias | c | | 1667 | PER | 1.00 | 1 | 0.66 | 28 | 18.48 | |
| Ramirez Sifuentes, Luis Angel | | | 1931 | PER | 0.50 | 1 | 0.41 | 28 | 11.48 | |
| Rojas Linares, Nicolas Gabriel | | | 1773 | PER | 0.50 | 1 | 0.29 | 28 | 8.12 | |
| Zapana Huarza, Fabricio Elvis | | | 1678 | PER | 1.00 | 1 | 0.68 | 28 | 19.04 | |
| Quiroz Alva, Gian Carlo Gabriel | | | 1720 | PER | 0.00 | 1 | -0.27 | 28 | -7.56 | |
| * Rating difference of more than 400. Please read more at FIDE Handbook |
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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