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Individual Calculations February 2019 |
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| Elgersma, Onno Total change: -26.40 | |   |
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| Chess Festival Groningen 2018 - Open A | Groningen | NED | 2018-12-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2177 | 2192 | 4.50 | 9 | -0.28 | 40 | -11.20 | |
|  Beerdsen, Thomas | m | | 2477 | NED | 0.50 | 1 | 0.34 | 40 | 13.60 | |  Krasenkow, Michal | g | | 2592 * | POL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Van De Pavoordt, Max | | | 2042 | NED | 1.00 | 1 | 0.30 | 40 | 12.00 | | | Pel, Bonno | f | | 2279 | NED | 0.00 | 1 | -0.38 | 40 | -15.20 | | | Van Foreest, Machteld | | | 1925 | NED | 0.00 | 1 | -0.82 | 40 | -32.80 | | | Keuning, Selwin | | | 2013 | NED | 0.00 | 1 | -0.73 | 40 | -29.20 | | | De Boer, Bas | | | 2134 | NED | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Zwirs, Jasper | | | 2127 | NED | 1.00 | 1 | 0.41 | 40 | 16.40 | | | Maters, Arthur | | | 2005 | NED | 1.00 | 1 | 0.26 | 40 | 10.40 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 |
| 2109 | 2160 | 1.50 | 3 | -0.21 | 40 | -8.40 | |
| | Straat, Rody | | | 2116 | NED | 0.00 | 1 | -0.56 | 40 | -22.40 | | | Van De Lisdonk, Lucien | | | 2074 | NED | 1.00 | 1 | 0.38 | 40 | 15.20 | | | Zevenhuizen, Daniel | | | 2137 | NED | 0.50 | 1 | -0.03 | 40 | -1.20 | |
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 - Dagvierkampen | Wijk aan Zee | NED | 2019-01-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2100 | 2160 | 1.00 | 2 | -0.17 | 40 | -6.80 | |
| | Den Herder, Frank | | | 2103 | NED | 1.00 | 1 | 0.42 | 40 | 16.80 | | | Casteleijn, Diederick | | | 2096 | NED | 0.00 | 1 | -0.59 | 40 | -23.60 | |
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) | | |
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