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Individual Calculations February 2019 |
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| Van Ommeren, Jos Total change: 3.80 | |   |
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| Tata Steel Chess Tournament 2018 - Weekendvierkampen | Wijk aan Zee | NED | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1913 | 1989 | 2.00 | 3 | 0.19 | 20 | 3.80 | |
|  Dekker, Derk | | | 1855 | NED | 0.00 | 1 | -0.68 | 20 | -13.60 | |  Gabriel, Uwe | | | 2026 | GER | 1.00 | 1 | 0.55 | 20 | 11.00 | | | De Jong, Frank | | | 1858 | NED | 1.00 | 1 | 0.32 | 20 | 6.40 | |
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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