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| XIV Festival Internacional de Ajedrez Claretiano 2023 Sub - 16 | Lima | PER | 2023-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1267 | 1443 | 2.00 | 5 | -1.55 | 40 | -62.00 | |
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 Salas Alvarez, Gustavo Marcelo | | | 1199 | PER | 1.00 | 1 | 0.20 | 40 | 8.00 | |
| Quiroz Alva, Gian Carlo Gabriel | | | 1629 | PER | 0.00 | 1 | -0.26 | 40 | -10.40 | |
 Huarcaya Jimenez, Gabriela | | | 1227 | PER | 0.00 | 1 | -0.78 | 40 | -31.20 | |
| Quispe Villagaray, Maria Belen | | | 1157 | PER | 0.00 | 1 | -0.84 | 40 | -33.60 | |
| Nadal Santoyo, Vicente Jamil | | | 1122 | PER | 1.00 | 1 | 0.13 | 40 | 5.20 | |
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 Hibrido Centroamericano, del Caribe y del Pacifico 2023 | Panama - Porlamar - La Habana - Lima - Cusco - Ayacucho - Guayaquil - Machala | PAN | 2023-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1401 | 1473 | 3.50 | 5 | 0.56 | 40 | 22.40 | |
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| Montoya Jorge, Richard Lionel | | | 1251 | PER | 1.00 | 1 | 0.22 | 40 | 8.80 | |
| Salinas Gonzales, Eliseo Mequias | | | 1640 | PER | 0.50 | 1 | 0.22 | 40 | 8.80 | |
| Tacas Cardenas, Andrea Ximena | | | 1626 | PER | 0.00 | 1 | -0.30 | 40 | -12.00 | |
| Cordova Martiarena, Gabriela Fern | | | 1202 | PER | 1.00 | 1 | 0.17 | 40 | 6.80 | |
| Barcia Dominguez, Andrea Alejandr | | | 1284 | PAN | 1.00 | 1 | 0.25 | 40 | 10.00 | |
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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| Campeonato Regional de Ajedrez Metropolitano Impar Sub 15 Femenino | Lima | PER | 2023-08-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1278 | 1473 | 4.00 | 6 | -0.33 | 40 | -13.20 | |
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| Sosa Vasquez, Karla Paola | | | 1073 * | PER | 1.00 | 1 | 0.08 | 40 | 3.20 | |
| Champi Suarez, Chiara Anaid | | | 1277 | PER | 1.00 | 1 | 0.25 | 40 | 10.00 | |
| Amaya Retamozo, Carmen Rebeca | | | 1170 | PER | 0.50 | 1 | -0.36 | 40 | -14.40 | |
| Acuna Alarcon, Claudia Micaela | | | 1537 | PER | 0.50 | 1 | 0.09 | 40 | 3.60 | |
| Gomez Gonzales, Fabiana | | | 1469 | PER | 0.00 | 1 | -0.51 | 40 | -20.40 | |
| Valenzuela Reinoso, Safrys | | | 1141 | PER | 1.00 | 1 | 0.12 | 40 | 4.80 | |
| * 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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