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Individual Calculations September 2023 |
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| Chua, Ethan Total change: 13.20 | |   |
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| Open Nederlandse Jeugdkampioenschappen 2023 (U14) | Dieren | NED | 2023-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1538 | 1701 | 4.00 | 6 | -0.08 | 40 | -3.20 | |
|  Jorritsma, Eli Alia | | | 1301 * | NED | 1.00 | 1 | 0.08 | 40 | 3.20 | |  Vertongen, Jack | | | 1375 | BEL | 0.50 | 1 | -0.37 | 40 | -14.80 | | | Musabayev, Maxim | | | 1756 | BEL | 0.00 | 1 | -0.42 | 40 | -16.80 | | | Frederiks, Jesse | | | 1455 | NED | 1.00 | 1 | 0.19 | 40 | 7.60 | | | Madularea, David | | | 1874 | NED | 0.50 | 1 | 0.23 | 40 | 9.20 | | | Declerck, Adriaan | | | 1466 | BEL | 1.00 | 1 | 0.21 | 40 | 8.40 | | | * 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) | | | | RSB Open 2023 | Rotterdam | NED | 2023-08-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1896 | 1701 | 1.50 | 4 | 0.41 | 40 | 16.40 | |
| | Pietrow, Andrzej | | | 2020 | NED | 0.50 | 1 | 0.37 | 40 | 14.80 | | | Bulthuis, Jelle | | | 2021 | NED | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Aarts, Joaquin | | | 1628 | NED | 0.00 | 1 | -0.60 | 40 | -24.00 | | | Verhoeven, Leo | | | 1914 | NED | 1.00 | 1 | 0.77 | 40 | 30.80 | |
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) | | |
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