十五也被称为宝石拼图,老板拼图,十五游戏,神秘广场。
The Fifteen also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square, and many others is a sliding puzzle having 15 square tiles numbered 1–15 in a frame that is 4 tiles high and 4 tiles wide, leaving one unoccupied tile position. Tiles in the same row or column of the open position can be moved by sliding them horizontally or vertically, respectively. The goal of the puzzle is to place the tiles in numerical order.