开窗户游戏是一个运筹规划问题。在5×5的界面中，有25个窗口，点击其中一个，以其为中心的3×3的一行一列上的窗口改变当前状态，使得最后将所有的窗口都打开。每次可以改变3、4、5个窗口的状态。

-The window the game is a logistics planning. In 5 × 5 interface, there are 25 window, click on one of its centered 3 × 3 line on a window to change the current state, making the final all the windows are open. 3,4,5 can be changed each time a window state.