Puzzles [15] vs Puzzle 8, 15, 35...使用状況と統計

Fifteen sliding tiles is a favorite puzzle of childhood for the iPhone. The rules are very simple and everyone knows them: you have to move the tile with number to the place of the empty one until all of them will be in order. Easy? Well, let's see you try to do it with three-digit numbers or with mathematical formulas ;) Thanks to our application you have a unique chance to rack your brains!