Fedor Parfenovich Bohatirchuk vs Ivan Theodorovich
CAN ch53 Ottawa CAN round 10 1955.08.25
Sicilian Defense: Accelerated Dragon 0-1

Ivan Theodorovich vs Eldis Cobo Arteaga
59th US Open Rochester, MN USA round 7 1958.08.10
Caro-Kann Defense: Euwe Attack, Prins Gambit 0-1