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Individual Calculations September 2009 |
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| Snikkers, Naomi Total change: -18.45 | |   |
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| 3e Leiden Chess Tournament | Leiden | NED | 2009-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2027 | 1818 | 1.00 | 6 | -0.46 | 25 | -11.50 | |
|  Van Dongen, Cor | | | 2218 * | NED | 0.00 | 1 | -0.08 | 25 | -2.00 | |  Meenu, Rajendran | | | 2003 | IND | 0.00 | 1 | -0.26 | 25 | -6.50 | | | Van Kempen, Roderick | | | 1982 | NED | 0.00 | 1 | -0.28 | 25 | -7.00 | | | Van Der Eyk, Dick | | | 2004 | NED | 0.00 | 1 | -0.26 | 25 | -6.50 | | | Boyarchenko, Marie | | | 2028 | LUX | 1.00 | 1 | 0.77 | 25 | 19.25 | | | Van Brussel, Bert | | | 1929 | NED | 0.00 | 1 | -0.35 | 25 | -8.75 | | | * 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) | | | | Dutch Open - Reserve A | Dieren | NED | 2009-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1993 | 1818 | 1.00 | 6 | -0.68 | 25 | -17.00 | |
| | Boersma, Jan | | | 2132 | NED | 0.00 | 1 | -0.14 | 25 | -3.50 | | | Lentjes, Noud | | | 1865 | NED | 0.00 | 1 | -0.43 | 25 | -10.75 | | | Winkel, Ruud | | | 1972 | NED | 1.00 | 1 | 0.71 | 25 | 17.75 | | | Verhoef, Harry | | | 1939 | NED | 0.00 | 1 | -0.34 | 25 | -8.50 | | | Rutjes, Twan | | | 1965 | NED | 0.00 | 1 | -0.30 | 25 | -7.50 | | | Ootes, Lennart | | | 2082 | NED | 0.00 | 1 | -0.18 | 25 | -4.50 | |
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 | | Hogeschool Zeeland Chess Tournament 2009 | Vlissingen | NED | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2107 | 1818 | 1.50 | 5 | 0.67 | 15 | 10.05 | |
| | Leenaerts, Robin | | | 2218 * | BEL | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Van De Groep, William | | | 2025 | NED | 1.00 | 1 | 0.77 | 15 | 11.55 | | | Kuipers, Stefan | f | | 2218 * | NED | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Rademakers, Maarten | | | 2066 | NED | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Koelmans, Jan Willem | | | 2008 | NED | 0.50 | 1 | 0.25 | 15 | 3.75 | | | * 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) | | |
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