【實用解謎app】Sliding Puzzle Free|最夯免費app-gigacircle

The 15-puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and many others) is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing. The puzzle also exists in other sizes, particularly the smaller 8-puzzle. The object of the puzzle is to place the tiles in order by making sliding moves that use the empty space.