HOW TO PLAY
How to play Bastion Cells
Toggle walls between neighboring cells on a 5×5 board. Partition it into connected regions of exactly five cells. Each numbered cell gives the number of its four sides that are walls; the outer border counts. Check validates region size, connectivity, every clue, and rejects walls that end inside a region.
Controls
- Tap an edge between cells to raise or remove a wall.
- Tab to an edge button and press Enter or Space to toggle it.
- Undo reverses the last wall change; Restart clears this puzzle.
- Choose Check, then Next after a correct layout.
Tips
- The board's outside border counts as walls.
- Each connected region must contain exactly five cells.
- A number counts walls on all four sides of its cell.
- Extra walls that end inside a region are rejected.