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Individual Calculations February 2019 |
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| Koopmans, Perry Total change: -10.80 | |   |
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| Tata Steel Chess Tournament 2018 - Tienkampen | Wijk aan Zee | NED | 2019-01-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1464 | 1634 | 3.00 | 5 | -0.54 | 20 | -10.80 | |
|  Voskuil, Tjerk | | | 1401 | NED | 0.50 | 1 | -0.29 | 20 | -5.80 | |  Dessens, John | | | 1272 | NED | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Marcelis, Ronald | | | 1511 | NED | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Keizers, Paul | | | 1515 | NED | 0.50 | 1 | -0.16 | 20 | -3.20 | | | Groot, Gerard | | | 1622 | NED | 0.50 | 1 | -0.02 | 20 | -0.40 | |
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) | | |
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