Some cells of the puzzle contain goats and wolves. Some cell corners have dots. You need to divide the entire field with lines along the cell borders so that all goats are separated from the wolves. Lines go from one edge of the grid to another, or to a dot where they can turn 90 degrees.
There must be no isolated fragments, and no more than two lines can meet at a single dot. A dot can be empty, on a straight line, or on a corner, but never at a crossing of lines.
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