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| 4 Open IRT U2400 Circulo Peruano de Ajedrez | Lima | PER | 2023-06-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1290 | 1242 | 1.50 | 4 | -0.76 | 40 | -30.40 | |
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 Reyes Zavaleta, Fabian Ricardo | | | 2026 | PER | 0.00 | 1 | 0.00 | 40 | 0.00 | |
| Ayala Aranibar, Adrian Alexander | | | 1068 | PER | 0.00 | 1 | -0.73 | 40 | -29.20 | |
 Garay Ramirez, Patrick Yosue | | | 1010 | PER | 1.00 | 1 | 0.21 | 40 | 8.40 | |
| Callupe Matias, Obed Esteban | | | 1056 | PER | 0.50 | 1 | -0.24 | 40 | -9.60 | |
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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| V Open IRT Circulo Peruano de Ajedrez sub 2400 | Lima | PER | 2023-07-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1327 | 1242 | 0.50 | 3 | -1.03 | 40 | -41.20 | |
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| Garay Ramirez, Patrick Yosue | | | 1010 | PER | 0.00 | 1 | -0.79 | 40 | -31.60 | |
| Ccerhuayo Escobedo, Mels Leopold | | | 1902 | PER | 0.00 | 1 | -0.01 | 40 | -0.40 | |
| Ayala Aranibar, Adrian Alexander | | | 1068 | PER | 0.50 | 1 | -0.23 | 40 | -9.20 | |
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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| VI Open IRT Circulo Peruano de Ajedrez sub 2400 | Lima | PER | 2023-07-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1233 | 1242 | 2.00 | 5 | -0.63 | 40 | -25.20 | |
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| Gonzalo Garate, Luis Valentino | | | 1595 | PER | 0.00 | 1 | -0.11 | 40 | -4.40 | |
| Callupe Matias, Obed Esteban | | | 1056 | PER | 1.00 | 1 | 0.26 | 40 | 10.40 | |
| Uchasara Apolinario, Josue Yoni | | | 1154 | PER | 1.00 | 1 | 0.38 | 40 | 15.20 | |
| Reyes Zavaleta, Sergio Gabriel | | | 1291 | PER | 0.00 | 1 | -0.43 | 40 | -17.20 | |
| Ayala Aranibar, Adrian Alexander | | | 1068 | PER | 0.00 | 1 | -0.73 | 40 | -29.20 | |
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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| Campeonato Nacional de Ajedrez Impar 2023 - Sub 11 Femenino | Lima | PER | 2023-07-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1162 | 1242 | 3.50 | 5 | 0.50 | 40 | 20.00 | |
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| Mandujano, Alagon Ghaydaa Ceneth | | | 1319 | PER | 0.00 | 1 | -0.39 | 40 | -15.60 | |
| Chira Diaz , Antonella | | | 1121 | PER | 1.00 | 1 | 0.34 | 40 | 13.60 | |
| Jimenez Salas, Fabiana | | | 1260 | PER | 1.00 | 1 | 0.53 | 40 | 21.20 | |
| Ninahuanca Salazar, Ana Lucia | | | 1036 | PER | 0.50 | 1 | -0.26 | 40 | -10.40 | |
| Farro Olivares, Bianka Elisabeth | | | 1074 | PER | 1.00 | 1 | 0.28 | 40 | 11.20 | |
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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