（九宫问题）在一个３×３的九宫中有１－８这８个数及一个空格随机的摆放在其中的格子里，如图１－１所示。现在要求实现这个问题：将该九宫格调整为如图１－１右图所示的形式。调整的规则是：每次只能将与空格（上、下、或左、右）相邻的一个数字平移到空格中-(Nine-palace issues) in a 3 × 3 of the Nine-palace there are 1-8 this 8 random number and a space in which the grid placed yard, as shown in Figure 1-1. Now required to achieve this problem: the Style Box adjusted to the form shown at right in Figure 1-1. Adjustment rule is: Every time they can with the space (up, down, or left, right) moved to the adjacent spaces in a digital flat