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Individual Calculations February 2015 |
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| Jorritsma, Stefan Total change: 36.20 | |   |
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| Tata Steel Chess Tournament 2015 - W4KP | Wijk aan Zee | NED | 2015-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1850 | 1883 | 0.00 | 2 | -1.09 | 20 | -21.80 | |
|  Plooijer, Johan | | | 1768 | NED | 0.00 | 1 | -0.66 | 20 | -13.20 | |  Kok, Cas | | | 1932 | NED | 0.00 | 1 | -0.43 | 20 | -8.60 | |
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) | | | | Tata Steel Chess Tournament 2015 - T4A | Wijk aan Zee | NED | 2015-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1874 | 1883 | 7.00 | 8 | 2.90 | 20 | 58.00 | |
| | Laan, Aad | | | 1730 | NED | 0.50 | 1 | -0.20 | 20 | -4.00 | | | Veerman, Jan | | | 1933 | NED | 1.00 | 1 | 0.57 | 20 | 11.40 | | | Veenstra, Frits | | | 1892 | NED | 1.00 | 1 | 0.51 | 20 | 10.20 | | | Karstens, Lex | | | 1857 | NED | 1.00 | 1 | 0.46 | 20 | 9.20 | | | Van Der Meiden, Albert | | | 1926 | NED | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Veenendaal, Loek | | | 1908 | NED | 0.50 | 1 | 0.03 | 20 | 0.60 | | | De Haas, Maarten | | | 1857 | NED | 1.00 | 1 | 0.46 | 20 | 9.20 | | | Mertens, Gottfried | | | 1892 | GER | 1.00 | 1 | 0.51 | 20 | 10.20 | |
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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