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A Hitori puzzle is basically a grid in which each cell contains a number.
Some of these cells must be painted out so that no number is repeated within any row or column.
However, painted-out cells may not touch orthogonally (up/down or left-right) and
painted-out cells cannot cut off any unpainted cell or group of cells from the others.
These rules provide visual logic cues that move the solver towards a unique solution.
Solvers generally use a circle around the number to distinguish an "unpainted" cell from unprocessed cells.
NumberPuzzles.com is pleased to be among the first to offer these puzzles commercially.
Our puzzles are carefully graded by difficulty: Easy, Moderate, Hard and Challenging.
All puzzles are rigorously tested to ensure that they have exactly one solution,
which can be deduced by logic alone.
No guessing is required.
We provide puzzles and solutions in print-ready format (EPS, or Encapsulated Post-Script)
as well as machine-readable format (XML), and can provide custom content and format as required.
Please feel free to download our samples
or contact us with your requirements.
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