实现棋盘覆盖功能，用Ｃ＋＋编程，实现在一个棋盘上输入相应特殊棋盘的位置，就可以完成整个棋盘的覆盖工作．-chessboard achieve functional coverage, and C + + programming, in a chessboard of the corresponding input to the special board position we can complete the whole chessboard of the coverage.