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Individual Calculations July 2009 |
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| Cox, Jan Total change: 8.35 | |   |
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| Belgisch Jeugdkampioenschap 2009 -14 | Houffalize | BEL | 2009-04-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1981 | 1808 | 0.50 | 2 | -0.05 | 25 | -1.25 | |
|  Vandelacluze, Ian | | | 2026 | BEL | 0.50 | 1 | 0.28 | 25 | 7.00 | | | Baekelant, Eva | | | 1935 | BEL | 0.00 | 1 | -0.33 | 25 | -8.25 | |
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) | | | NOTE: K factor changed | | NKJ 2009 - C Jeugd | Venlo | NED | 2009-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1927 | 1808 | 2.00 | 4 | 0.64 | 15 | 9.60 | |
| | Bijlsma, Nick | | | 1952 | NED | 0.00 | 1 | -0.31 | 15 | -4.65 | |  Vereggen, Lars | | | 1989 | NED | 1.00 | 1 | 0.74 | 15 | 11.10 | | | Lentjes, Noud | | | 1903 | NED | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Kollen, Zyon | | | 1864 | NED | 0.00 | 1 | -0.42 | 15 | -6.30 | |
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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