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| Campeonato Metropolitano Juvenil Grupo A Sub 12 Femenino | Lima | PER | 2018-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1216 | 1078 | 1.50 | 5 | -0.19 | 40 | -7.60 | |
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 Contreras, Fiorella | | | 1478 * | PER | 0.00 | 1 | -0.08 | 40 | -3.20 | |
| Orihuela Barreda, Alondra | | | 1214 | PER | 0.00 | 1 | -0.32 | 40 | -12.80 | |
 Zarate Manchay, Rosa Illari | | | 1107 | PER | 0.50 | 1 | 0.04 | 40 | 1.60 | |
| Guardamino Cajo, Yelena Indira | | | 1125 | PER | 0.00 | 1 | -0.43 | 40 | -17.20 | |
| Sosa Vasquez, Karla Paola | | | 1154 | PER | 1.00 | 1 | 0.60 | 40 | 24.00 | |
| * 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 Metropolitano Juvenil Grupo A Sub 10 Femenino | Lima | PER | 2018-01-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1120 | 1078 | 2.50 | 4 | 0.74 | 40 | 29.60 | |
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| Sosa Vasquez, Karla Paola | | | 1154 | PER | 1.00 | 1 | 0.60 | 40 | 24.00 | |
| Guardamino Cajo, Yelena Indira | | | 1125 | PER | 1.00 | 1 | 0.57 | 40 | 22.80 | |
| Maravi Ceron, Ayme | | | 1104 | PER | 0.50 | 1 | 0.04 | 40 | 1.60 | |
| Vizcarra, Quispe Ramalia | | | 1096 | PER | 0.00 | 1 | -0.47 | 40 | -18.80 | |
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 Ricardo Palma 2018 - Sub 1850 | Lima | PER | 2018-01-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1265 | 1078 | 0.50 | 5 | -0.92 | 40 | -36.80 | |
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| Chavez Sierra, Jorge Alberto | | | 1478 * | PER | 0.00 | 1 | -0.08 | 40 | -3.20 | |
| Herrera Cervellon, Jesus Yorman | | | 1328 | PER | 0.00 | 1 | -0.19 | 40 | -7.60 | |
| Chavez Bautista, Lennin Alfredo | | | 1184 | PER | 0.00 | 1 | -0.36 | 40 | -14.40 | |
| Sulca Valenzuela, Luis Alberto | | | 1004 | PER | 0.50 | 1 | -0.10 | 40 | -4.00 | |
| Montoya Canta, David Sebastian | | | 1330 | PER | 0.00 | 1 | -0.19 | 40 | -7.60 | |
| * 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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| Copa Latinoamericana de Ajedrez Categoria C Juvenil | Lima | PER | 2018-01-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1321 | 1078 | 0.00 | 3 | -0.64 | 40 | -25.60 | |
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| Jara Rosas, Jeremy | | | 1462 | PER | 0.00 | 1 | -0.09 | 40 | -3.60 | |
| Noronha Linares, Alessandra Fiore | | | 1287 | PER | 0.00 | 1 | -0.23 | 40 | -9.20 | |
| Orihuela Barreda, Alondra | | | 1214 | PER | 0.00 | 1 | -0.32 | 40 | -12.80 | |
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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