Crossword puzzles are done by quite a number of people around the world today. They help teach vocabulary of a certain language and improve the use of the said language.
The crossword puzzle is basically a square box with dark and whit boxes included in the set.
The white spaces are where the solution to the asked question is answered.
They are numbered so one knows where to insert a response.
Crosswords are available in a variety of places and are normally found in newspapers in a lot of countries. They can however be found and done on the internet.