所谓八数码问题是指这样一种游戏：将分别标有数字1，2，3，…，8的八块正方形数码牌任意地放在一块3×3的数码盘上。-Eight so-called digital problem is that such a game: will be marked with the number 1,2,3, ..., 8 of 8 square digital licensing arbitrarily placed on a 3 × 3 of the digital disc.