How to say zadachka in different languages

You can say zadachka as puzzel in the following countries: Aruba; Belgium; Curacao; Netherlands; Netherlands Antilles; Sint Maarten; Suriname;

You can say zadachka as задача in the following countries: Bulgaria;

You can say zadachka as opgave in the following countries: Denmark;

You can say zadachka as uzdevums in the following countries: Latvia;

You can say zadachka as задачка in the following countries: Russia;

You can say zadachka as задачка in the following countries: Ukraine;