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Individual Calculations September 2019 |
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| Oconnor, Zaina Total change: 25.20 | |   |
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| Carifta Junior Chess Championships 2019 - U12 Female | Willemstad | AHO | 2019-04-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1169 | 1192 | 2.50 | 3 | 0.90 | 40 | 36.00 | |
|  Watson, Gabriella | | | 1078 | JAM | 1.00 | 1 | 0.34 | 40 | 13.60 | |  Ramnarine Singh, Aradhana | | | 1267 | TTO | 0.50 | 1 | 0.10 | 40 | 4.00 | | | Griffiths, Laila | | | 1161 | JAM | 1.00 | 1 | 0.46 | 40 | 18.40 | |
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) | | | | Panamericano de la Juventud 2019 sub 10 femenino | Guayaquil | ECU | 2019-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1081 | 1180 | 1.00 | 2 | -0.27 | 40 | -10.80 | |
| | Mayeregger Gonzalez, Fiorella | | | 1139 | PAR | 0.50 | 1 | -0.06 | 40 | -2.40 | | | Romero Velasquez, Jimena | | | 1023 | PER | 0.50 | 1 | -0.21 | 40 | -8.40 | |
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) | | |
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