Robert G Hartoch vs Peter Gelpke
NED-ch Hilversum NED round 5 1985.06.19
King’s Indian Attack 1/2-1/2

Robert G Hartoch vs Maxwell Leonard Fuller
Hastings 1968/69 Hastings ENG round 1 1968.12.28
Czech Defense 1/2-1/2

Robert G Hartoch vs Raphael Persitz
Hastings 1968/69 Hastings ENG round 3 1968.12.30
Amar Gambit 1/2-1/2

Frans Andre Cuijpers vs Robert G Hartoch
Dutch Championship Hilversum NED round 4 1985.06.17
Russian Game 1/2-1/2

Leonid Stein vs Robert G Hartoch
Amsterdam IBM Amsterdam NED round 15 1969.08.02
Caro-Kann Defense 1-0

Albin Planinc vs Robert G Hartoch
Hoogovens Wijk aan Zee NED round 9 1973.01.26
Nimzo-Larsen Attack 1-0