Really cool game!
I was playing all day and did not come off I can :)
How to play Fifteen puzzles?
To start the game you need to move the cursor and click the mouse on the puzzle to figure necessary to you. The selected number will appear in the empty cell, and an empty cell, respectively, will appear in place of the number buttons. Move so only button that is located on the left / right or top / bottom relatively empty cells. Goal of the game to collect all the buttons in order of 1 to 15.