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Individual Calculations February 2023 |
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| Koelmans, Jan Willem Total change: -8.40 | |   |
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| Chessfestival Groningen 2022 Compact | Groningen | NED | 2022-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2022 | 1912 | 1.00 | 4 | -0.42 | 20 | -8.40 | |
|  Van Putten, Henk | | | 2074 | NED | 0.50 | 1 | 0.21 | 20 | 4.20 | |  Van T Veld, Menno | | | 1993 | NED | 0.50 | 1 | 0.11 | 20 | 2.20 | | | Hendriks, Peter | | | 2009 | NED | 0.00 | 1 | -0.37 | 20 | -7.40 | | | Wubben, Marcel | | | 2010 | NED | 0.00 | 1 | -0.37 | 20 | -7.40 | |
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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