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Individual Calculations February 2019 |
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| Sipkema, Willem Total change: -3.80 | |   |
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| Chess Festival Groningen 2018 - Compact B | Groningen | NED | 2018-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1628 | 1817 | 3.00 | 5 | -0.66 | 20 | -13.20 | |
|  Slagboom, Leandro | | | 1674 | NED | 0.50 | 1 | -0.19 | 20 | -3.80 | |  Torensma, Christian | | | 1433 | NED | 0.50 | 1 | -0.41 | 20 | -8.20 | | | Reintke, Erwin | | | 1668 | NED | 1.00 | 1 | 0.30 | 20 | 6.00 | | | Welling, Sophie | | | 1705 | NED | 0.00 | 1 | -0.65 | 20 | -13.00 | | | Van Stiphout, Marc | | | 1661 | BEL | 1.00 | 1 | 0.29 | 20 | 5.80 | |
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) | | | | Tata Steel Chess Tournament 2018 - Weekendvierkampen | Wijk aan Zee | NED | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1811 | 1817 | 2.00 | 3 | 0.47 | 20 | 9.40 | |
| | Braggaar, Pim | | | 1877 | NED | 0.50 | 1 | 0.08 | 20 | 1.60 | | | Meyles, Willem | | | 1811 | NED | 0.50 | 1 | -0.01 | 20 | -0.20 | | | Lessmann, Edwin | | | 1745 | NED | 1.00 | 1 | 0.40 | 20 | 8.00 | |
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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