Area Puzzle

Claim as much area in 10 moves as you can. A move consists of two board clicks:
1. The first marks the top-left position of a rectangular area that does not include any black squares.
2. The second click marks the bottom-right corner of such a rectangular area.
A "target" (maximum area possible) is displayed on the left, as well as the area you have covered.


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You cannot click a wall.
You can undo any move at any time by clicking a position inside an existing rectangular area. The clicked area disappears.
There are 25 challenges with fixed setups and two challenges with random setups. The first random setup uses twenty walls; the second one uses forty walls.
This game was previously published as the Zillions game Area Solo by the same author.
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