_{This puzzle is a part of the Puzzling Stack Exchange Advent Calendar 2022. The accepted reply to this query can be awarded a bounty price 100 fame.}

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Today’s door results in a signature “simple” puzzle by Anonymus25! I do know, a few of my latest puzzles have not carried out effectively (and by latest, I imply many months in the past), however I’m again and able to strive once more! As I mentioned earlier than, this puzzle is “simple”, however provided that you actually perceive this style’s deductions. It’s a Circles and Squares!

Rules: Shade some cells such that each one shaded cells type one single orthogonally related space, and no 2×2 anyplace within the grid could also be totally shaded (as in Nurikabe). All unshaded areas should type squares. Black circles are shaded, white circles are unshaded.

Some good instance puzzles embrace this one by Athin and this one by me.

Here’s a Penpa hyperlink to resolve on-line.