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Player:  Peter Kolkman  Age: 68
KNDB-rating on 1-7-2023: 994
Highest KNDB-rating ever: 1044
Average KNDB-rating all time: 1018 
Virtual KNDB-rating : 1013 Toernooibase Dammen

Strongest win in last 10 years by
Peter Kolkman (1000):
05-12-2022 Frans Boot (1151)
(Provincial Teamcompetition Utrecht)
Toernooibase Dammen Weakest loss in last 10 years by
Peter Kolkman (1004):
12-11-2018 Jaap Langerak (923)
(Provincial Teamcompetition Utrecht)

FMJD-rating: 1901
Highest FMJD-rating ever: 1901
Average FMJD-rating all time: 1844
(Graphics FMJD-rating in period
KNDB-rating)
     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
sa 09-09-2023  Dutch Teamcompetition KNDB  Michiel Luiten  999 1-0-5 0.49 0.99
mo 18-09-2023  Provincial Teamcompetition Utrecht  Henk de Groot  903 1-291 0.62 1.25
mo 02-10-2023  Provincial Teamcompetition Utrecht  Jacco Scheper  1003 1-2-9 0.49 0.97
tu 10-10-2023  Provincial Teamcompetition Utrecht  Theo van Londen  889 1-1105 0.64 1.29
sa 14-10-2023  Dutch Teamcompetition KNDB  Nico Valkenburg  1078 1-1-84 0.38 0.77
sa 04-11-2023  Dutch Teamcompetition KNDB  Jos Helmink  877 1-2117 0.66 1.32
mo 06-11-2023  Provincial Teamcompetition Utrecht  Ben van der Linden  907 1-187 0.62 1.24
tu 21-11-2023  Provincial Teamcompetition Utrecht  Harry Vredeveldt  805 1-2189 0.75 1.49
sa 02-12-2023  Dutch Teamcompetition KNDB  Ludger Buijs  1058 1-2-64 0.41 0.82
mo 04-12-2023  Provincial Teamcompetition Utrecht  Jaap Veld  914 1-180 0.61 1.22
sa 20-01-2024  Dutch Teamcompetition KNDB  Janes de Vries  1044 1-1-50 0.43 0.86
sa 03-02-2024  Dutch Teamcompetition KNDB  Cees Groen  949 1-245 0.56 1.13
mo 05-02-2024  Provinciale Bekercompetitie Utrecht  Dirk Bijkerk  976 1-218 0.53 1.05
sa 02-03-2024  Dutch Teamcompetition KNDB  Jack Derksen  812 1-1182 0.74 1.48
mo 18-03-2024  Provinciale Bekercompetitie Utrecht  Arne van Mourik  1277 1-0-283 0.16 0.32
 Total:15-2016.19
 Correctionfactor:5 (251 g.)
 Calculation:20-16.19 x5=19.04
 Virtual rating: 1013
 Aver.rating: 966 Perc.:0.67Diff.: 123
 TPR: 966 +123 1089