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Individual Calculations May 2019 |
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| Salazar Artavia, Keylor Total change: 8.80 | |   |
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| I Torneo Abierto de Curridabat Infantil sub 12 2019 | Curridabat | CRC | 2019-03-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1188 | 1053 | 1.50 | 4 | 0.22 | 40 | 8.80 | |
|  Mayorga Araya, Sofia | | | 1240 | CRC | 1.00 | 1 | 0.74 | 40 | 29.60 | | | Salazar Gould, Kristy Valeria | | | 1191 | CRC | 0.50 | 1 | 0.19 | 40 | 7.60 | |  Cossio Carvajal, Bruno | | | 1113 | CRC | 0.00 | 1 | -0.42 | 40 | -16.80 | | | Quiros Acuna, Sebastian | | | 1207 | CRC | 0.00 | 1 | -0.29 | 40 | -11.60 | |
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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