Slither Links or Loop the Loop or Fences

 Slither Links puzzle is known with many different names like Fences or Loop the Loop puzzle. This puzzle is appeared many times in World Puzzle Championships. To complete the Grand Tour of this puzzle, you must join some of the dots together both horizontally and vertically to form one complete loop which does not cross over itself. If a cell contains a number, then that number of sides of the cell must be included within the loop.