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Individual Calculations April 2009 |
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| Tilstra, Arjen Total change: 11.00 | |   |
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| 2A - r 4-5 - Dutch Team Competition | Various | NED | 2008-09-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2103 | 2084 | 0.00 | 1 | -0.47 | 25 | -11.75 | |
|  Blees, Enrico | | | 2103 | NED | 0.00 | 1 | -0.47 | 25 | -11.75 | |
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) | | | | Schaakfestival Groningen - Compact A | Groningen | NED | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2169 | 2084 | 2.50 | 4 | 0.91 | 25 | 22.75 | |
| | Nepveu, Manuel | | | 2018 | NED | 1.00 | 1 | 0.41 | 25 | 10.25 | | | Houtman, Joop | f | | 2249 | NED | 1.00 | 1 | 0.72 | 25 | 18.00 | |  Rothuis, Vincent | m | | 2370 | NED | 0.00 | 1 | -0.16 | 25 | -4.00 | | | Kamps, Jacques | | | 2039 | NED | 0.50 | 1 | -0.06 | 25 | -1.50 | |
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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