Slitherlink is a puzzle presented as a dotted grid surrounding some numbers Groups of four adjacent dots act as corners of a square called a cell Some cells of the grid are filled with numbers To fill in the puzzle you create one continuous non intersecting loop drawn from one dot to an adjacent dot horizontally or vertically Connecting one dot to the next draws a side or border of the cell The goal of the puzzle is for your loop to provide the indicated number of sides borders to numbered cells each cell that has a number in it has that many borders from the loop surrounding its cell For example here is a completed puzzle 1 1 3 2 1 2 2 1 12 2 1 1 131 121 3 3 3 21 1 Now let s try putting these strategies to use in some puzzles Here is a Slitherlink puzzle Solve the puzzle but also describe HOW you solve it ww NHO 2 1 0 1 3