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Individual Calculations September 2023 |
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| Goudriaan, Rafael Total change: 172.90 | |   |
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| HZ University of Applied Sciences Chess Tournament 2023 | Vlissingen | NED | 2023-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2210 | 1990 | 6.00 | 9 | 3.72 | 35 | 130.20 | |
|  Jacobs, Paul | | | 1588 | BEL | 1.00 | 1 | 0.08 | 35 | 2.80 | |  Ciolek, Andreas | f | | 2273 | GER | 1.00 | 1 | 0.84 | 35 | 29.40 | | | Rodriguez Fontecha, Marcos | f | | 2309 | ESP | 0.50 | 1 | 0.37 | 35 | 12.95 | | | Eidelman, Gabriel | | | 2297 | USA | 0.50 | 1 | 0.36 | 35 | 12.60 | | | Weber, Dirk | | | 2151 | GER | 1.00 | 1 | 0.71 | 35 | 24.85 | | | Van Delft, Merijn | m | | 2360 | NED | 1.00 | 1 | 0.90 | 35 | 31.50 | | | Krasenkow, Michal | g | | 2534 | POL | 0.00 | 1 | -0.03 | 35 | -1.05 | | | Grochal, Joey | f | | 2280 | NED | 0.00 | 1 | -0.16 | 35 | -5.60 | | | Arnold, Rhys | | | 2098 | NED | 1.00 | 1 | 0.65 | 35 | 22.75 | |
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) | | | | Brugse Meesters 2023 Open - Belgian Championship 2023 Open A | Brugge | BEL | 2023-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1954 | 1990 | 4.50 | 8 | 0.18 | 35 | 6.30 | |
| | Visser, Wouter | | | 1624 | NED | 1.00 | 1 | 0.10 | 35 | 3.50 | | | Koridze, Lile | | wf | 2152 | GEO | 0.00 | 1 | -0.29 | 35 | -10.15 | | | Roose, Casimir | | | 1772 | BEL | 0.50 | 1 | -0.28 | 35 | -9.80 | | | Dewever, Niel | | | 1801 | BEL | 1.00 | 1 | 0.25 | 35 | 8.75 | | | Bisby, Daniel L | f | | 2279 | ENG | 0.00 | 1 | -0.16 | 35 | -5.60 | | | Godding, Mick | | | 1799 | NED | 1.00 | 1 | 0.25 | 35 | 8.75 | | | Neininger, Ralph | | | 2121 | GER | 0.50 | 1 | 0.18 | 35 | 6.30 | | | Boer, Alef | | | 2086 | NED | 0.50 | 1 | 0.13 | 35 | 4.55 | |
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) | | | | Nazomervierkampentoernooi Assen 2023 | Assen | NED | 2023-08-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1998 | 1990 | 2.50 | 3 | 1.04 | 35 | 36.40 | |
| | Hummel, Joop | | | 1997 | NED | 1.00 | 1 | 0.51 | 35 | 17.85 | | | Van Pelt, Erwin | | | 1989 | NED | 0.50 | 1 | 0.00 | 35 | 0.00 | | | Dijk, Rogier | | | 2008 | NED | 1.00 | 1 | 0.53 | 35 | 18.55 | |
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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