int move[10][10]={
    // A B C D E F G H I
    {0,                 },
    {4,1,2,  4,5        },
    {3,1,2,3            },
    {4,  2,3,  5,6      },
    {3,1,    4,    7    },
    {5,  2,  4,5,6,  8  },
    {3,    3,    6,    9},
    {4,      4,5,  7,8  },
    {3,            7,8,9},
    {4,        5,6,  8,9},
};