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Individual Calculations November 2009 |
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| Vertechi, Pietro Total change: 10.20 | |   |
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| OP Scacco matto alla donna bianca | Roma | ITA | 2009-09-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1928 | 1959 | 2.50 | 4 | 0.37 | 15 | 5.55 | |
|  Testa, Adriano | | | 2160 | ITA | 0.00 | 1 | -0.24 | 15 | -3.60 | |  Piccolo, Giuseppe | | | 1675 | ITA | 0.50 | 1 | -0.34 | 15 | -5.10 | | | Pastore, Cosmas | | | 1808 | ITA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Pienabarca, Nicola | | | 2067 | ITA | 1.00 | 1 | 0.65 | 15 | 9.75 | |
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) | | | | OP 7. A. Zichichi | Ladispoli | ITA | 2009-09-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1998 | 1959 | 3.00 | 6 | 0.31 | 15 | 4.65 | |
| | Palermo, Stefano | | | 2060 | ITA | 0.00 | 1 | -0.36 | 15 | -5.40 | | | Cavaterra, Umberto | | | 1801 | ITA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Guanciale, Orazio | | | 2155 | ITA | 1.00 | 1 | 0.75 | 15 | 11.25 | | | Parrini, Daniele | | | 2022 | ITA | 0.00 | 1 | -0.41 | 15 | -6.15 | | | Messina, Roberta | | | 1895 | ITA | 1.00 | 1 | 0.41 | 15 | 6.15 | | | Marta, Daniele | | | 2056 | ITA | 0.00 | 1 | -0.37 | 15 | -5.55 | |
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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