Fill cells so connected regions of the same number have that size
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How to Play
Fill every empty cell with a number. All cells containing the same number that are connected orthogonally (up/down/left/right) must form a region whose size equals that number.
For example, a group of three connected 3s is valid. A single isolated 1 is valid. Two connected 2s is valid.
Click a cell to select it, then click a number below (or press a key) to fill it. Pre-filled cells cannot be changed.