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Individual Calculations September 2010 |
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| Ypma, Peter Total change: -4.05 | |   |
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| 4e Leiden Chess Tournament | Leiden | NED | 2010-07-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2240 | 2074 | 2.00 | 6 | 0.28 | 15 | 4.20 | |
|  Rijnaarts, Sjef | f | | 2264 | NED | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Akrawi, Samir | f | | 2247 | NED | 1.00 | 1 | 0.73 | 15 | 10.95 | |  Michielsen, Joost | | | 2397 | NED | 0.50 | 1 | 0.37 | 15 | 5.55 | | | Merbis, Max | | | 2159 | NED | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Van Der Marel, Bert | | | 2178 | NED | 0.50 | 1 | 0.14 | 15 | 2.10 | | | Van Helvoort, Rob | | | 2197 | NED | 0.00 | 1 | -0.33 | 15 | -4.95 | |
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) | | | | Dutch Open | Dieren | NED | 2010-07-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2189 | 2074 | 3.50 | 9 | 0.34 | 15 | 5.10 | |
| | Michalczak, Thomas | f | | 2367 | GER | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Sprangers, Remco | c | | 2260 | NED | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Styazhkina, Anna | | wf | 1985 | RUS | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Shalnyeva, Olga | | wm | 2153 | GER | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Vosselman, Jan | | | 2164 | NED | 0.50 | 1 | 0.12 | 15 | 1.80 | | | Van Leent, Dimitri | f | | 2209 | NED | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Bijlsma, Nick | | | 2173 | NED | 1.00 | 1 | 0.64 | 15 | 9.60 | | | Mostertman, Milan | | | 2207 | NED | 0.50 | 1 | 0.18 | 15 | 2.70 | | | Bus, Tom | | | 2179 | NED | 0.00 | 1 | -0.36 | 15 | -5.40 | |
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) | | | | University of Twente Open Dutch Youth Chess Championship 2010 | Enschede | NED | 2010-08-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1969 | 2074 | 1.00 | 3 | -0.89 | 15 | -13.35 | |
| | Damen, Igor | | | 1937 | NED | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Lambrechts, Koen | | | 2156 | NED | 0.00 | 1 | -0.39 | 15 | -5.85 | | | Laan, Kart | | | 1814 | NED | 0.00 | 1 | -0.82 | 15 | -12.30 | |
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) | | |
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