http://www.guokr.com/blog/482291/图中的这种情况在WIN31和WIN95/98的扫雷中是不可能出现的，不知道这张是改图还是说从XP开始有可能第一下就点到雷了。
因为扫雷中有个秘籍，参见
http://en.wikipedia.org/wiki/XyzzyThe popular Minesweeper game under older versions of Microsoft Windows had a cheat mode triggered by entering the comment xyzzy, then pressing the key sequence shift and then enter, which turned a single pixel in the top-left corner of the entire screen into a small black or white dot depending on whether or not the mouse pointer is over a mine. This easter egg was present in all Windows versions through Windows XP Service Pack 2, but under Windows 95, 98 and NT 4.0 the pixel was visible only if the standard Explorer desktop was not running. The easter egg does not exist in versions after Windows XP SP3.
打开扫雷，输入'xyzzy‘，再按下'Shift'和'Enter'组合键，则电脑屏幕的左上角会出现一个白色的像素点，如果你的光标正处在雷上，那个白点会消失。
我曾经试过，在白点消失的情况下点开【第一个格子】，发现不是雷。
所以，我猜测会不会是有这么个设定：如果要点开的第一个格子有雷，那么在点开的时候扫雷会重新运算，确保第一下点开的一定不是雷。