Normal sudoku rules apply. Choco-banana: Shade some cells such that every group of orthogonally connected shaded cells is a rectangle (chocolate), and every group of orthogonally connected unshaded cells is not a rectangle (banana). Note: squares are rectangles. In every chocolate region, orthogonally adjacent cells must differ by at least 4. In every banana region, no two digits are equal or consecutive. A digit in a circle counts the number of cells of the chocolate or banana region that circle lies in.
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