Clear View

Clear View is the lookout puzzle for people who like to take notes. Place walls so that each number sees exactly that many open cells along its row and column, including itself. Walls never touch by a side, and open cells stay connected. The difference is the Mark tool. Switch it on and a tap puts a small dot on a cell instead of a wall — your note that this cell is definitely open. Marks don't affect the solution; they just save you from holding the whole chain of reasoning in your head. Switch Mark off to go back to walls. Check Panes points out what is wrong when the board isn't solved: numbers that don't match, walls that touch, or open cells cut off from the rest. Light glass colours, unlimited undo, one solution per layout. Offline and ad-free.

First release of Clear View.