说明：  推箱子游戏，又名仓库番，箱子只可以推, 不可以拉, 而且一次只能推动一个，胜利条件就是把所有的箱子都推到目的地。
(Sokoban game, also known as Sokoban, boxes can only push, not pull, but can only promote a victory condition is that all the boxes are pushed to the destination.)