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Player:  Piet van Essen  Age: 91 KNDB-rating on 1-7-2023: 606 Highest KNDB-rating ever: 611 Average KNDB-rating all time: 596  Virtual KNDB-rating : 619 Strongest win in last 10 years by Piet van Essen (608): 22-11-2022 Bas Schipper (484) (Provincial Teamcompetition Z-Holland Zuid) Weakest loss in last 10 years by Piet van Essen (610): 06-11-2017 Johan Tol (666) (Provincial Teamcompetition Z-Holland Zuid)

Date	Tournament	Opponent	Rat	Ga		Pt	R.diff.	N.perc	N.pts
tu 19-09-2023	Provincial Teamcompetition Z-Holland Zuid	Jan Vorthoren	674	1	-	1	-68	0.41	0.81
th 05-10-2023	Provincial Teamcompetition Z-Holland Zuid	Kees Scheer	867	1	-	1	-261	0.18	0.36
mo 30-10-2023	Provincial Teamcompetition Z-Holland Zuid	Barend Stravers	915	1	-	1	-309	0.14	0.28
th 23-11-2023	Provincial Teamcompetition Z-Holland Zuid	Jan van Krieken	967	1	-	0	-361	0.1	0.21
tu 09-01-2024	Cupcompetition Z-Holland Zuid	Wim t Lam	842	1	-	0	-236	0.2	0.41
th 01-02-2024	Provincial Teamcompetition Z-Holland Zuid	Coen Westerveen	742	1	-	1	-136	0.32	0.63
tu 20-02-2024	Cupcompetition Z-Holland Zuid	Marcel van der Most	1053	1	-	0	-447	0.06	0.12
mo 11-03-2024	Provincial Teamcompetition Z-Holland Zuid	Henk van der Pols	610	1	-	1	-4	0.49	0.99
tu 07-05-2024	Provincial Teamcompetition Z-Holland Zuid	Ko Heikoop	825	1	-	1	-219	0.22	0.44
		Total:		9	-	6			4.25
		Correctionfactor:		7.5	(39 g.)
		Calculation:		6	-	4.25 x		7.5=	13.11
		Virtual rating:							619
		Aver.rating:	833	Perc.:			0.33	Diff.:	-123
		TPR: