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Individual Calculations September 2009 |
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| Ferrufino, Boris Total change: 2.70 | |   |
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| Primer Olimpiada del Mercosur 2009 | Mar del Plata | ARG | 2009-06-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2452 | 2202 | 1.00 | 4 | 0.18 | 15 | 2.70 | |
|  Leitao, Rafael | g | | 2552 | BRA | 0.50 | 1 | 0.39 | 15 | 5.85 | | | Peralta, Fernando | g | | 2552 | ARG | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Rios Escobar, Adan | | | 2311 | CHI | 0.50 | 1 | 0.15 | 15 | 2.25 | |  Tristan, Leonardo | | | 2393 | ARG | 0.00 | 1 | -0.25 | 15 | -3.75 | |
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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