Horse-Stepping-on-board

代码说明：

  在传统中国象棋中，马走日型路线。本代码就是按其规则，让马从棋盘任一点开始，输出它可以行走的所有点的坐标。(In traditional Chinese chess, horse go day-type line. The code according to the rules, let the horse from checkerboard any point, the coordinates of all points of output it can walk.)