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Individual Calculations February 2018 |
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| Grondsma, Mark Total change: -12.60 | |   |
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| Tata Steel Weekendvierkampen 2018 | Wijk aan Zee | NED | 2018-01-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1944 | 2093 | 2.00 | 3 | -0.08 | 20 | -1.60 | |
|  Ibrahim, Ashraf | | | 1864 | NED | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Officier, Tom | | | 1989 | NED | 0.50 | 1 | -0.14 | 20 | -2.80 | |  Bosma, Erik | | | 1980 | NED | 0.50 | 1 | -0.15 | 20 | -3.00 | |
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 Dagvierkampen 2018 | Wijk aan Zee | NED | 2018-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2060 | 2093 | 0.00 | 1 | -0.55 | 20 | -11.00 | |
| | Van Dam, Niels | | | 2060 | NED | 0.00 | 1 | -0.55 | 20 | -11.00 | |
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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