SudokuPuzzle.pro

Infinite Puzzles. Infinite Glory.

Learn How to Play

Sudoku is a logic puzzle. Fill the grid so every row, column, and 3×3 box contains the digits 1–9 with no repeats. Start with the guides below, then use the site tips when you play on SudokuPuzzle.pro.

1. How to Play Sudoku: A Complete Beginner's Guide

   New to Sudoku? This beginner's guide teaches the rules, how the grid works, how to start your first puzzle, and the mistakes to avoid — with a worked example.

2. Sudoku Basic Techniques: Scanning, Cross-Hatching & Pencil Marks

   Master essential Sudoku techniques for beginners: row, column and box scanning, cross-hatching, and smart pencil marks that make Medium puzzles feel easy.

3. Intermediate Sudoku Strategies: Hidden Singles, Pairs & Pointing Patterns

   Stuck on Medium Sudoku? Learn intermediate strategies — naked and hidden singles, naked and hidden pairs, and pointing pairs — with examples for each pattern.

4. Advanced Sudoku Techniques: X-Wing, Swordfish, XY-Wing & Coloring

   Learn advanced Sudoku techniques: clear explanations of X-Wing, Swordfish, XY-Wing, and simple coloring, with diagrams showing how each pattern works.

5. Sudoku Difficulty Levels Explained: From Easy to Nightmare

   What makes a Sudoku Easy or Nightmare? Learn what each difficulty level really demands, how to choose your level, and a progression path from Easy to Nightmare.

6. Sudoku Tips & FAQ: 20+ Questions Answered

   Sudoku tips and answers to 20+ frequently asked questions: guessing vs logic, getting unstuck, pencil marks, speed, streaks, mistakes, and improving fast.

The rules

1. The board is a 9×9 grid split into nine 3×3 boxes.
2. Some cells already show numbers — those are given clues and stay fixed.
3. Fill empty cells with digits 1 through 9.
4. Each digit may appear only once in every row, column, and box.

Tips on SudokuPuzzle.pro

• Notes mode — mark possible candidates in a cell before committing a number.
• Undo — reverse a recent move if you change your mind.
• Mistakes — conflicting entries flash; keep solving and adjust as you go.
• Difficulty — pick a level that matches your pace for free unlimited puzzles.
• Daily Challenge — one shared puzzle per day; finish it to grow your streak. Shared leaderboard rankings are coming soon.

FAQ

Is Sudoku free to play on SudokuPuzzle.pro?

Yes. You can play unlimited Sudoku puzzles in your browser at no cost. No account or download is required.

Is there a new Sudoku puzzle every day?

Yes. Daily Challenge serves one shared puzzle each UTC day. Finish it to grow your streak. You can also play unlimited free puzzles at Easy, Medium, or Hard.

Do I need an account to play?

No. Progress such as your current puzzle, points, streak, and dark mode preference is stored in your browser's local storage. There are no accounts.

What difficulties are available?

Free play includes Easy, Medium, and Hard. Daily Challenge uses a Hard puzzle shared by everyone that day.