What better boredom buster is there than a sudoku? These boxes of numbers are bright brain-teasers ready to keep us on our toes! Sudokus are easier to play than ever before. The app versions for phones & tablets let us compete in social media settings like the Game Centre. Some apps also give little hints & clues when you need it. But it's as easy as checking if there's a number between 1 & 9 missing in the box, the row, or the column. Everyone should at least try an easy level of the game to learn something new.