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| XII Open IRT U-1600 Club Hermanos Rojas | Lima | PER | 2020-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1228 | 1131 | 1.50 | 5 | -0.35 | 38 | -13.30 | |
|
 Sanchez Cruz, Mireya Jassly | | | 1248 | PER | 0.00 | 1 | -0.34 | 38 | -12.92 | |
 Mandujano Torres, Joseph Jairo Se | | | 1237 | PER | 1.00 | 1 | 0.64 | 38 | 24.32 | |
| Garayar Peralta, Luis Fernando | | | 1121 | PER | 0.50 | 1 | -0.01 | 38 | -0.38 | |
| Zapata Romero, Italo German | | | 1338 | PER | 0.00 | 1 | -0.23 | 38 | -8.74 | |
| Casqui Lopez, Marlon Gabriel | | | 1194 | PER | 0.00 | 1 | -0.41 | 38 | -15.58 | |
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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| XIII Open IRT U-1600 Club Hermanos Rojas. | Lima | PER | 2020-02-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1141 | 1022 | 0.50 | 5 | -1.31 | 38 | -49.78 | |
|
| Apolin Meza, Tito | | | 1422 * | PER | 0.00 | 1 | -0.08 | 38 | -3.04 | |
| Coaquira Gonzales, Oscar Adriano | | | 1036 | PER | 0.00 | 1 | -0.48 | 38 | -18.24 | |
| Francisco Suyo, David Elias | | | 1058 | PER | 0.50 | 1 | 0.05 | 38 | 1.90 | |
| Reyes Zavaleta, Sergio Gabriel | | | 1125 | PER | 0.00 | 1 | -0.36 | 38 | -13.68 | |
| Pillaca Chumbe, Santiago Moises | | | 1063 | PER | 0.00 | 1 | -0.44 | 38 | -16.72 | |
| * 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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| XIV Open IRT U-1600 Club Hermanos Rojas. | Lima | PER | 2020-02-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1189 | 1022 | 3.00 | 7 | 0.95 | 38 | 36.10 | |
|
| Mollo Figueroa, Nicole | | | 1202 | BOL | 1.00 | 1 | 0.74 | 38 | 28.12 | |
| Torres Castaneda, Ricardo | | | 1176 | PER | 0.50 | 1 | 0.21 | 38 | 7.98 | |
| Francisco Suyo, David Elias | | | 1058 | PER | 0.00 | 1 | -0.45 | 38 | -17.10 | |
| Espichan Serna, Magaly Del Rosari | | | 1137 | PER | 1.00 | 1 | 0.66 | 38 | 25.08 | |
| Zapata Romero, Italo German | | | 1338 | PER | 0.00 | 1 | -0.13 | 38 | -4.94 | |
| Campos Aquino, Benjhamyn Joshua | | | 1052 | PER | 0.50 | 1 | 0.04 | 38 | 1.52 | |
| Ccana Minauro, Wernher Sebastian | | | 1360 | PER | 0.00 | 1 | -0.12 | 38 | -4.56 | |
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 2020 - Sub 8 Femenino | Lima | PER | 2020-02-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1020 | 1022 | 1.00 | 1 | 0.50 | 38 | 19.00 | |
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| Guzman Vera, Xiomara Anahi | | | 1020 | PER | 1.00 | 1 | 0.50 | 38 | 19.00 | |
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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