Draw fences along the grid lines so the whole grid is split into regions that each have the same number of squares — the size is shown with the puzzle (for example, regions of 4).
A number in a square says how many of its four sides are fences. The outer edge of the grid counts as a fence, so a 2 in a corner has no inner fences at all.
Regions can be any shape, as long as their squares join side by side.
Draw fences along the grid lines to split the grid into regions of the same size, with each number counting the fences around its square.
The full guide, with a worked example and common mistakes: How to play Fence Regions.
No — only the same size. They can be any shape, as long as their squares are joined side by side.
Yes — it counts as a fence for the numbers.
Yes — every puzzle here is checked to have exactly one solution.
Open the Fence Regions Solver, choose the region size, type the numbers and press Solve.