Here’s an easy/medium LITS. Getting the puzzle to wrap up was the hardest part.



  • Shade some cells to form a tetromino in each region.
  • Two tetrominoes of the same shape may not share an edge.
  • The shaded cells must also form a connected wall that contains no 2×2 squares of shaded cells.

EDIT: I modified two of the central regions, the puzzle solves more smoothly now.

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