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Individual Calculations March 2010 |
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| Mellema, Andries Total change: 30.30 | |   |
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| Schaakfestival Groningen 2009 Open B | Groningen | NED | 2009-12-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2014 | 2117 | 6.00 | 7 | 1.55 | 15 | 23.25 | |
|  Wissmann, Dolf | | | 1975 | NED | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Verwoert, Jef | | | 2061 | NED | 1.00 | 1 | 0.42 | 15 | 6.30 | |  Groot De, Ymar | | | 2001 | NED | 0.50 | 1 | -0.16 | 15 | -2.40 | | | Jelic, Bruno | | | 2098 | NED | 1.00 | 1 | 0.47 | 15 | 7.05 | | | Slagter, Ruben | | | 2029 | NED | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Weggen, Jeroen | | | 1847 | NED | 1.00 | 1 | 0.17 | 15 | 2.55 | | | Wielenga, Wiebe | | | 2090 | NED | 1.00 | 1 | 0.46 | 15 | 6.90 | |
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 1B Round 5-6 - Dutch Team Competition | Various | NED | 2010-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2181 | 2130 | 1.00 | 2 | 0.13 | 15 | 1.95 | |
| | Hallebeek, Fred | f | | 2259 | NED | 0.00 | 1 | -0.33 | 15 | -4.95 | | | Schuermans, Robert | | | 2103 | BEL | 1.00 | 1 | 0.46 | 15 | 6.90 | |
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) | | | | Corus Chess Tournament - Tien 2F | Wijk aan Zee | NED | 2010-01-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2117 | 2130 | 5.00 | 9 | 0.34 | 15 | 5.10 | |
| | Molenaar, Christiaan | | | 2053 | NED | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Blanchard, Jack | | | 2182 | NED | 0.50 | 1 | 0.07 | 15 | 1.05 | | | Coenen, Eduard | | | 2167 | NED | 1.00 | 1 | 0.55 | 15 | 8.25 | | | Roggeveen, Pieter | | | 2143 | NED | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Leburgue, Sylvain | | | 2123 | FRA | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Moncayo Romero, Evelyn | | wm | 2142 | ECU | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Barendse, Ted | | | 2171 | NED | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Voss, Herman | | | 2034 | NED | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Burggraaf, Jan | | | 2035 | NED | 1.00 | 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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