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Individual Calculations December 2018 |
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| Velazquez Rivera, Pedro J. Total change: -11.80 | |   |
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| Copa de Ajedrez del Veterano Grupo A | Arecibo | PUR | 2018-11-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1963 | 1787 | 0.50 | 4 | -0.59 | 20 | -11.80 | |
|  Pinales Roussel, Gabriel | | | 2037 | PUR | 0.00 | 1 | -0.19 | 20 | -3.80 | |  Cruz Arce, Francisco J. | | | 1964 | PUR | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Morales Santos, Natasha | | wm | 1939 | PUR | 0.00 | 1 | -0.30 | 20 | -6.00 | | | Gerena Rivas, Eliam | f | | 1911 | PUR | 0.00 | 1 | -0.33 | 20 | -6.60 | |
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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