Otto B Morcken vs Fernand Morel
Helsinki ol (Men) fin-C Helsinki FIN round 2 1952.08.22
Grünfeld Defense: Counterthrust Variation 0-1

Nikolay N Minev vs Otto B Morcken
Moscow ol (Men) qual-A Moscow URS round 1 1956.09.01
Queen’s Gambit Declined: Tarrasch Defense 1/2-1/2