point getHorizontalNeighbour(int row, int col) {

   point neighbour;

   if (col % 2 == 0) {
      
      if (row % 2 == 0) {
         neighbour.row = row - 1;
         neighbour.col = col + 1;
      }
      else {
         neighbour.row = row - 1;
         neighbour.col = col - 1;
      }

   }

   else {
      
      if (row % 2 == 0) {
         neighbour.row = row + 1;
         neighbour.col = col + 1;
      
      }
      else {
         neighbour.row = row + 1;
         neighbour.col = col - 1;
      
      }

   }
   return neighbour;  
}