Light and Shadow

Light and Shadow is a Nikoli logic puzzle.

  • Shade some cells in the grid.
  • Each orthogonally connected area of only shaded or only unshaded cells contains exactly one clue.
  • Some clued cells are given as shaded, and unshaded clues may not be shaded.
  • A clue represents the size of the area of shaded or unshaded cells that the clue belongs to.