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Individual Calculations March 2010 |
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| Boersma, Jan Total change: -6.45 | |   |
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| Schaakfestival Groningen 2009 Mini A | Groningen | NED | 2009-12-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1959 | 2119 | 3.00 | 5 | -0.53 | 15 | -7.95 | |
|  Mostertman, Xander | | | 1865 | NED | 0.00 | 1 | -0.81 | 15 | -12.15 | |  Berg Van Der, Wessel | | | 1948 | NED | 0.50 | 1 | -0.23 | 15 | -3.45 | | | Berg Van Den, Imme | | | 1987 | NED | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Tilstra, Arjen | | | 2095 | NED | 0.50 | 1 | -0.03 | 15 | -0.45 | | | Wiggerman, Jan | | | 1901 | NED | 1.00 | 1 | 0.22 | 15 | 3.30 | |
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) | | | | Klasse 3A Round 5-6 - Dutch Team Competition | Various | NED | 2010-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2185 | 2114 | 0.50 | 1 | 0.10 | 15 | 1.50 | |
| | Wiersma, Tjalling | | | 2185 | NED | 0.50 | 1 | 0.10 | 15 | 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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