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Individual Calculations February 2024 |
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| Koelmans, Jan Willem Total change: -7.40 | |   |
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| Chessfestival Groningen 2023 Compact BCD | Groningen | NED | 2023-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1784 | 1793 | 2.50 | 4 | 0.46 | 20 | 9.20 | |
|  Elferink, Leon | | | 1673 | NED | 1.00 | 1 | 0.34 | 20 | 6.80 | |  Hardeman, Martijn | | | 1871 | NED | 0.50 | 1 | 0.11 | 20 | 2.20 | | | Manschot, Thomas | | | 1877 | NED | 0.50 | 1 | 0.12 | 20 | 2.40 | | | Fallaux, Storm | | | 1716 | NED | 0.50 | 1 | -0.11 | 20 | -2.20 | |
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 204 - Nine-round event | Wijk aan Zee | NED | 2024-01-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1805 | 1793 | 3.50 | 9 | -0.83 | 20 | -16.60 | |
| | Dekker, Jop | | | 1916 | NED | 0.50 | 1 | 0.17 | 20 | 3.40 | | | Landsheer, Jeroen | | | 1711 | NED | 0.00 | 1 | -0.61 | 20 | -12.20 | | | Burer, Humphrey | | | 1806 | NED | 0.50 | 1 | 0.02 | 20 | 0.40 | | | Hageman, Ger | | | 1880 | NED | 0.00 | 1 | -0.38 | 20 | -7.60 | | | Croes, Octavio | c | | 1717 | ARU | 1.00 | 1 | 0.40 | 20 | 8.00 | | | Tamminga, Meile | | | 1829 | NED | 0.50 | 1 | 0.05 | 20 | 1.00 | | | Valkenburg, Max | | | 1728 | NED | 0.00 | 1 | -0.59 | 20 | -11.80 | | | Flohr, Ron | | | 1848 | NED | 0.50 | 1 | 0.08 | 20 | 1.60 | | | Wolters, Vincent | | | 1812 | NED | 0.50 | 1 | 0.03 | 20 | 0.60 | |
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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