Sudoku Solver: Step-by-step logic solver



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Sudoku Solver: Step-by-Step Logical Solution

The Sudoku Solver is a powerful tool that solves puzzles using logical methods step by step. Use this tool to learn various solving techniques and deepen your understanding of Sudoku strategies.

Introduction to Sudoku Solver

The Sudoku Solver is a logical tool that solves Sudoku puzzles step by step. By using this tool, you can learn various solving skills and improve your Sudoku techniques.

Additional Features

  1. Create your own Sudoku puzzles (directly enter numbers 1-9 in the grid)
  2. Import Sudoku puzzles (import format is an 81-digit string, with blanks represented by 0, *, or .)
  3. Save Sudoku puzzles (saved in cookies, will be lost when cookies expire)
  4. Print Sudoku puzzles in multiple supported formats

How to Use

You can directly enter numbers into the Sudoku grid. Use "Delete" or "Backspace" keys to remove numbers.

Input Tips:
  • Use number keys 1-9 to enter digits directly
  • Use arrow keys (↑↓←→) to navigate between cells
  • Press Delete or Backspace to clear a cell

Next Hint

Display the next hint. Hints are cumulative and build upon previous messages. Press the "Enter" button repeatedly to see hints and numbers progressively.

Reset Hints

Return to the previous position where a number was entered and display hints from that point.

Key Features

Step-by-Step Hints

The solver displays logical steps progressively, helping you understand the solving process thoroughly.

Automatic Solution

Solve the entire puzzle automatically with one click. Watch and learn from the solving process.

Puzzle Import

Import puzzles using an 81-digit string format. Easily load puzzles from other sources.

Print Function

Print puzzles to solve on paper. Multiple print formats are supported.

Frequently Asked Questions

The current solver uses basic and intermediate solving techniques. It can solve most easy to medium difficulty puzzles.

The 81-digit string is a standard way to represent a Sudoku puzzle. It represents all 81 cells from top-left to bottom-right, row by row. Empty cells are represented by "0", ".", or "*".
Example: 97.3.4.65.2.5.6.8............58.29....

Puzzles are saved in your browser's cookies. If you clear cookies or they expire, saved puzzles will be lost. We recommend backing up important puzzles separately.
Note:

The solver is designed as a learning tool. Instead of directly viewing solutions, we recommend using the hint feature to understand the solving process and improve your Sudoku skills.