Puzzles are ideal for players of all ages since they can keep the mind sharp and can be played for any level of difficulty. There are many different types of games people like to play. Some of the most popular are word, number and jigsaw puzzles. One special kind of puzzles is the sliding ones. Here you don’t have the liberty to rearrange pieces as you want, but you have to respect some movement rules that make the fun game harder and, at the same time, more enjoyable.