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Individual Calculations April 2009 |
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| Hummel, Joop Total change: 33.60 | |   |
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| Schaakfestival Groningen - Groep B | Groningen | NED | 2008-12-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1904 | 1997 | 2.50 | 5 | -0.54 | 15 | -8.10 | |
|  Parfett, Gerald F | | | 1650 | ENG | 1.00 | 1 | 0.11 | 15 | 1.65 | |  Mostertman, Xander | | | 1868 | NED | 0.00 | 1 | -0.67 | 15 | -10.05 | | | Groot, Simon | | | 2008 | NED | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Moos, Gerd Anton Ferdinand | | | 2035 | GER | 1.00 | 1 | 0.55 | 15 | 8.25 | | | Zuiderweg, Edwin | | | 1960 | NED | 0.50 | 1 | -0.05 | 15 | -0.75 | |
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) | | | | 2A - Corus Chess Tournament - Tienkampen | Wijk aan Zee | NED | 2009-01-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2145 | 1997 | 5.50 | 9 | 2.78 | 15 | 41.70 | |
| | Heijboer, Pieter | | | 2078 | NED | 0.00 | 1 | -0.39 | 15 | -5.85 | | | Roering, Ed | | | 2152 | NED | 0.50 | 1 | 0.21 | 15 | 3.15 | | | Caoili, Arianne | | wm | 2182 | AUS | 1.00 | 1 | 0.74 | 15 | 11.10 | | | Vroombout, Enrico | | | 2168 | NED | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Testa, Adriano | | | 2124 | ITA | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Kroencke, Manfred | | | 2149 | GER | 1.00 | 1 | 0.70 | 15 | 10.50 | | | Stork, Ornett J. | | | 2129 | NED | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Coenen, Eduard | | | 2154 | NED | 1.00 | 1 | 0.71 | 15 | 10.65 | | | Ahlers, Ben | | | 2168 | NED | 0.50 | 1 | 0.23 | 15 | 3.45 | |
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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