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| Campeonato Escolar Nacional 2021 Sub 15 Femenino | Huaral | PER | 2021-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1445 | 1700 | 4.50 | 8 | -1.65 | 21 | -34.65 | |
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 Chile Vela, Claudia Daniela | | | 1300 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Huayhuas Robles, Laura Sofia | | | 1619 | PER | 1.00 | 1 | 0.39 | 21 | 8.19 | |
 Aguilar Oblitas, Yadhira | | wc | 1640 | PER | 0.00 | 1 | -0.58 | 21 | -12.18 | |
| Salazar, Becerra Fely Gabriela | | | 1300 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Tacas Cardenas, Andrea Ximena | | | 1300 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Vega Paucar, Emely Bachellet | | | 1803 | PER | 0.50 | 1 | 0.14 | 21 | 2.94 | |
| Moreyra Saravia, Luciana Belen | | | 1300 * | PER | 0.00 | 1 | -0.92 | 21 | -19.32 | |
| Ramirez Tipian, Valerie Luisciana | | | 1300 * | PER | 0.00 | 1 | -0.92 | 21 | -19.32 | |
| * 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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| Campeonato Regional Metropolitano Escolar SUB 17 Absoluto | Lima | PER | 2021-11-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1717 | 1700 | 3.00 | 5 | 0.68 | 21 | 14.28 | |
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| Rojas Salas, Steven | f | | 2100 * | PER | 0.00 | 1 | -0.08 | 21 | -1.68 | |
| Ludena Calderon, German Freddy | | | 1300 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Espichan Serna, Luis Ricardo | | | 1300 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Bravo Mallco, Kate Azumi | | | 1913 | PER | 0.50 | 1 | 0.27 | 21 | 5.67 | |
| Contreras Huaman, Fiorella | | wf | 1973 | PER | 0.50 | 1 | 0.33 | 21 | 6.93 | |
| * 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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| I IRT Open Armagedon | Lima | PER | 2021-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1540 | 1700 | 5.00 | 7 | 0.29 | 21 | 6.09 | |
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| Hernandez Perdomo, Ronny Daniel | | | 1301 | VEN | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Coronel Flores, Salvador | | | 1495 | PER | 1.00 | 1 | 0.24 | 21 | 5.04 | |
| Sinti Pio, Jesus Moises | | | 1778 | PER | 0.00 | 1 | -0.39 | 21 | -8.19 | |
| Bedoya Rosales, Luis | | | 1999 | PER | 0.00 | 1 | -0.15 | 21 | -3.15 | |
| Vilca Contreras, Dante Ivan | | | 1329 | PER | 1.00 | 1 | 0.10 | 21 | 2.10 | |
| Herrada, Blanco Maria Fernanda | | | 1300 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Bravo Matias, Jean Karlho | | | 1577 | PER | 1.00 | 1 | 0.33 | 21 | 6.93 | |
| * 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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| IV IRT Hibrido del Sur Sub-1800 2021 | Porlamar-Caracas-Lima-La Paz-La Habana-Jalisco | VEN | 2021-12-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1609 | 1681 | 4.50 | 6 | 0.96 | 21 | 20.16 | |
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| Garcia Blanco, Rogelio Gerardo | | | 1478 | VEN | 1.00 | 1 | 0.24 | 21 | 5.04 | |
| Garcia Betancourt, Axel | | | 1447 | CUB | 1.00 | 1 | 0.21 | 21 | 4.41 | |
| Parra Gonzales, Andre Leonardo | | | 1639 | PER | 0.50 | 1 | -0.06 | 21 | -1.26 | |
| Rivero Gonzalez, Julio Cesar | | | 1685 | CUB | 1.00 | 1 | 0.51 | 21 | 10.71 | |
| Ramirez Gonzalez, Angel David | c | | 1761 | VEN | 0.00 | 1 | -0.39 | 21 | -8.19 | |
| Espinosa Forti, Edrwis Anthuan | | | 1642 | CUB | 1.00 | 1 | 0.45 | 21 | 9.45 | |
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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| 11 Open IRT U-2200 Club Hermanos Rojas | Lima | PER | 2021-12-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1512 | 1681 | 4.50 | 6 | 0.50 | 21 | 10.50 | |
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| Ramirez Espino, Gian Sandro | | | 1281 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Coaquira Gonzales, Oscar Adriano | | | 1281 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Guzman Vera, Diego Alonso | | | 1745 | PER | 0.50 | 1 | 0.09 | 21 | 1.89 | |
| Reyes Zavaleta, Diego Alexander | | | 1688 | PER | 0.50 | 1 | 0.01 | 21 | 0.21 | |
| Vilca Contreras, Dante Ivan | | | 1281 * | PER | 1.00 | 1 | 0.08 | 21 | 1.68 | |
| Bravo Mallco, Kate Azumi | | | 1797 | PER | 0.50 | 1 | 0.16 | 21 | 3.36 | |
| * 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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