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Individual Calculations September 2023 |
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| Rodriguez Zamudio, Zahir Joelson Total change: -16.00 | |   |
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| TORNEO IRT CLASICO PREPARACION AL NACIONAL 2023 SUB 1800 | Lima | PER | 2023-07-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1408 | 1169 | 1.50 | 5 | 0.05 | 40 | 2.00 | |
|  Puente Arana, Oscar | | | 1582 | PER | 0.50 | 1 | 0.43 | 40 | 17.20 | |  Ochochoque Hernandez, Julio | | | 1755 | PER | 0.00 | 1 | -0.02 | 40 | -0.80 | | | Ramirez Espino, Alessandro | | | 1581 | PER | 0.00 | 1 | -0.07 | 40 | -2.80 | | | Meneses Morales, Marcos Beltran | | | 1097 | PER | 0.00 | 1 | -0.60 | 40 | -24.00 | | | Villavicencio Luna Victoria, Fern | | | 1024 | PER | 1.00 | 1 | 0.31 | 40 | 12.40 | |
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) | | | | Campeonato Regional de Ajedrez Metropolitano Impar Sub 13 Absoluto | Lima | PER | 2023-08-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1299 | 1160 | 0.50 | 3 | -0.45 | 40 | -18.00 | |
| | Cardenas Huachaca, Alessandro Jai | | | 1335 | PER | 0.00 | 1 | -0.27 | 40 | -10.80 | | | Paz Neyra, Eduardo Gabriel | | | 1334 | PER | 0.00 | 1 | -0.27 | 40 | -10.80 | | | Valdez Maravi, Angel Yhadiel | | | 1227 | PER | 0.50 | 1 | 0.09 | 40 | 3.60 | |
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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