Normal sudoku rules apply. Shade an orthogonally connected group of cells within each dashed cage. Two shaded cells may not share a cage border. No two orthogonally touching cages may contain the same number of shaded cells. Circles are unshaded and contain the count of shaded cells in their cage. Values in the top left of cages (if given) sum the digits in shaded cells in the cage. Digits may not repeat in shaded cells in the cage (no restriction on unshaded cells). Digits in cells joined by a black dot are in a 2:1 ratio.