How to play
- Shade cells to make one wall. All the shaded cells join up, side to side.
- Clue cells stay white. A clue lists the lengths of the shaded runs in the 8 cells around it.
- Order doesn’t matter. Several numbers mean separate runs, with a white cell between them.
- No 2×2 block is all shaded.
- Tap a cell to shade it, again for a dot that marks it white, again to clear. Drag to paint.
Keyboard: arrows to move, space to cycle, s shade, d dot, h hint, Ctrl+Z undo, Ctrl+Shift+Z redo.
Learn how to solve it