采用双向广度优先搜索的方法搜索出在一定意义下最佳的解题步骤，并指导我系学生姚刚用DELPHI V5.0开发了一个相应的电脑游戏。本文首先介绍了该算法的基本思想，然后通过完整的PASCAL源程序及其注释给出该算法的具体的实现，最后给出搜索的结果。-Bidirectional breadth-first search method to search out the best in some sense the problem solving steps, and to guide my students just use the DELPHI V5.0 Yao has developed a corresponding computer games. This paper introduces the basic idea of the algorithm, and then complete PASCAL source code and comments are given concrete implementation of the algorithm, search results are given.