Mikhail Markovich Umansky vs Horst Robert Rittner
50th World Champions Jubilee Tournament 2001.07.01
Catalan Opening: Closed 1-0

Horst Robert Rittner vs Erik B H Bang
CCCA-60 8185 corr 1981.??.??
Ruy Lopez: Closed 0-1

Sverre Johannes Aarseth vs Horst Robert Rittner
6th Correspondence World Championship Final corr ICCF 1968.??.??
French Defense: Winawer Variation, Advance Variation 0-1