chessboard =     array((("C","k","B","Q","K","B","k","C"),
                        ("p","p","p","p","p","p","p","p"),
                        (0,0,0,0,0,0,0,0),
                        (0,0,0,0,0,0,0,0),
                        (0,0,0,0,0,0,0,0),
                        (0,0,0,0,0,0,0,0),
                        ("p","p","p","p","p","p","p","p"),
                        ("C","k","B","Q","K","B","k","C")))