Puzzle #40 - Look-Air

Here's another Look-Air puzzle, this time without any trivial clues. I'm pretty happy with how this one turned out, and one interaction in particular.

Rules

Shade some cells so that each orthogonally-connected area of shaded cells forms a perfect square. Clues may be shaded, and each clue represents how many cells are shaded from among the clue cell itself and its orthogonal neighbours. Two shaded square areas of the same size must not have an unobstructed run of unshaded cells, horizontally or vertically, anywhere between them.

Difficulty: 5/10






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