Puzzles such as Sudoku or Kakuro, where the final state of a pre-existing grid must be deduced logically through clues placed within and/or around the grid. For puzzles where you are given a list of clues which can be used to compose a grid to solve them logically, use the [logic-grid] tag instead.

Puzzles where the final state of a grid must be deduced logically through clues placed within and/or around the grid. Common puzzles of this type include Slitherlink, Sudoku (and Sudoku variants), Kakuro, Nurikabe, and Masyu.

Not to be confused with in which a set of clues about correspondences between different ways of describing the same set of objects can be used to compose and fill a grid to solve them.

history | excerpt history