Hitori
A classic Nikoli puzzle where you eliminate duplicate numbers by shading cells
Hitori is a classic logic puzzle from Nikoli, the creators of Sudoku. The name "Hitori" means "alone" or "one person" in Japanese. In this puzzle, you start with a grid of numbers and must eliminate duplicates by shading cells. The goal is to shade cells so that no number appears more than once in any row or column among the unshaded cells. Shaded cells cannot touch each other orthogonally, and all unshaded cells must remain connected. This page contains links to all Hitori puzzles published on this website.
Rules of Hitori
Shade some cells so that no number appears more than once in any row or column among the unshaded cells. Shaded cells cannot touch each other orthogonally. All unshaded cells must remain connected as a single group.
Why Solve Hitori Puzzles?
- Enhances logical elimination by identifying which cells to shade.
- A classic Nikoli puzzle enjoyed by logic puzzle enthusiasts worldwide.
- Great for beginners to advanced solvers with varying grid sizes.
- Builds spatial reasoning and pattern recognition skills.
- Offers a satisfying solving experience with clear logical steps.
Key Techniques for Solving Hitori
- Identify duplicates; look for numbers that appear more than once in a row or column.
- Mark shaded cells to eliminate duplicates, but shaded cells cannot touch orthogonally.
- Use the connectivity rule: all unshaded cells must form a single connected group.
- Eliminate possibilities: if shading a cell would break connectivity, it cannot be shaded.
- Use the "no touching" rule: shaded cells cannot be adjacent orthogonally.
- Check your work, verify that no unshaded number repeats in any row or column and that all unshaded cells are connected.
⬛ Hitori Puzzles
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Frequently Asked Questions
What is Hitori?
Hitori is a classic logic puzzle from Nikoli, the creators of Sudoku. The goal is to shade cells so that no number appears more than once in any row or column among the unshaded cells. Shaded cells cannot touch orthogonally, and all unshaded cells must remain connected.
How do I solve Hitori puzzles?
Start by identifying duplicate numbers in rows and columns. Shade cells to eliminate duplicates, but remember that shaded cells cannot touch orthogonally. Use the connectivity rule to ensure all unshaded cells remain connected. Eliminate possibilities that would break any of these rules.
What is the meaning of Hitori?
Hitori means "alone" or "one person" in Japanese. The name reflects the puzzle's goal of eliminating duplicate numbers so that each number appears alone in its row and column among the unshaded cells.
What sizes of Hitori puzzles are available?
This collection includes Hitori puzzles in various grid sizes, from smaller mini puzzles to larger, more challenging grids. The diversity ensures something for every skill level.
Where can I find more logic puzzles?
The Logic Puzzles Main Page is the central index for all logic puzzle types available on Fun With Puzzles. It covers a wide range of puzzle types and is the best place to discover new challenges.
⬛ Eliminate the duplicates and solve the Hitori challenge! Try today's Daily Challenge!
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