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Player:  Bettus de Vries  Age: 75
KNDB-rating on 1-7-2023: 0
Highest KNDB-rating ever: 0
Average KNDB-rating all time: 608 
Virtual KNDB-rating : 608 Toernooibase Dammen Toernooibase Dammen 		     
DateTournamentOpponentRatGaPtR.diff.N.percN.pts
mo 23-10-2023  Provincial Teamcompetition Friesland  Rinze Visser  803 1-0-195 0.25 0.49
th 02-11-2023  Provincial Teamcompetition Friesland  Jan Bosselaar  1044 1-0-436 0.06 0.13
mo 20-11-2023  Provincial Teamcompetition Friesland  Aize Plantinga  1076 1-1-468 0.05 0.1
mo 11-12-2023  Provincial Teamcompetition Friesland  Tabe de Vries  844 1-0-236 0.2 0.41
mo 08-01-2024  Provincial Teamcompetition Friesland  Wijtze van der Meulen  735 1-1-127 0.33 0.66
mo 05-02-2024  Provincial Teamcompetition Friesland  Arnold Wiegersma  1006 1-0-398 0.08 0.16
we 21-02-2024  Provincial Teamcompetition Friesland  Fokke Heidsma  881 1-0-273 0.17 0.34
 Total:7-22.29
 Correctionfactor:7.5 (7 g.)
 Calculation:
 Tot. aver. o-rating (incl. earl. seas.): 913Perc.: 0.14
 Tot. points (incl. earl. seas.): 7 - 2Diff.: -305
 Virtual rating: 913 +-305 608
 Aver.rating: 913 Perc.:0.14Diff.: -305
 TPR: