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Individual Calculations February 2018 |
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| Geertsema, Piet Total change: -9.80 | |   |
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| Tata Steel Weekendvierkampen 2018 | Wijk aan Zee | NED | 2018-01-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2013 | 1950 | 1.50 | 3 | 0.26 | 20 | 5.20 | |
|  Moes, Joris | | | 2038 | NED | 0.00 | 1 | -0.38 | 20 | -7.60 | |  Seip, Rien | | | 1996 | NED | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Gebhardt, Uwe | | | 2005 | GER | 0.50 | 1 | 0.08 | 20 | 1.60 | |
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 Tienkampen 2018 | Wijk aan Zee | NED | 2018-01-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1971 | 1950 | 3.50 | 9 | -0.75 | 20 | -15.00 | |
| | De Bruijn, Aad | | | 1972 | NED | 0.00 | 1 | -0.47 | 20 | -9.40 | | | Hoeneveld, Maarten | | | 1885 | NED | 1.00 | 1 | 0.41 | 20 | 8.20 | | | Veenstra, Wopke | | | 1983 | NED | 0.00 | 1 | -0.45 | 20 | -9.00 | | | Ritsema, Ronald | | | 2068 | NED | 0.50 | 1 | 0.16 | 20 | 3.20 | | | Haag, Guenter | | | 1955 | GER | 0.50 | 1 | 0.01 | 20 | 0.20 | | | Wijgers, Ben | | | 1995 | NED | 1.00 | 1 | 0.56 | 20 | 11.20 | | | Mienis, Dennis | | | 1931 | NED | 0.00 | 1 | -0.53 | 20 | -10.60 | | | De Freytas, Paul | | | 1916 | NED | 0.50 | 1 | -0.05 | 20 | -1.00 | | | Haakman, Adri | | | 2031 | NED | 0.00 | 1 | -0.39 | 20 | -7.80 | |
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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