Cuba present in first speed memory contest
Viera, 25, was one digit below the first and second places of that modality, and he won the ninth position in the general classification.
The competition includes six categories, including identification of geometric and color figures.
In November this Havana U mathematics professor took part in the World Mental Calculation Championship in Germany, where he won third place.
In related news on Cuban memory, Juventude Rebelde reports a baby prodigy already able to identify all the flags of the world in any order, differentiate planes and ships according to their function, and the two-year-old is "working on" identifying maps in the atlas.