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Play Sudoku Online Free

Fill calm, readable Sudoku grids across easy, medium, hard, and expert puzzles with no ads interrupting the logic.

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Classic game

Sudoku

Sudoku icon
Use bookmarks to tag possible wrong choices
Unlimited undo and hints
Use custom puzzle to solve any sudoku puzzle you find

Modes

Easy
Medium
Hard
Expert

Daily Challenge

Play today's local challenge. It stays the same for this game until tomorrow.

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Fast Guest Play

Start a free round immediately and finish at your own pace.

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Best Practices

Scan rows, columns, and boxes for cells with only one possible number.
Work one number at a time when the board feels crowded.
Use marks for uncertain guesses so you can backtrack cleanly.
Resolve visible conflicts immediately before they spread through the grid.

How to Play Sudoku

Sudoku is a pure number-placement puzzle. Each row, column, and box must contain the digits 1 through 9 exactly once.

  1. 1Fill every empty cell with a number from 1 to 9.
  2. 2Do not repeat a number in any row, column, or 3x3 box.
  3. 3Use given numbers as anchors and narrow each cell through elimination.
  4. 4Complete the full grid with no conflicts to finish the puzzle.

Sudoku FAQ

The Ultimate Ad-Free Sudoku & Solver

Whether you want to relax with a generated puzzle or need help solving a tough Sudoku from a newspaper, FreeJeu has you covered. Our custom puzzle solver lets you input any grid and find the solution. Best of all, our entire Sudoku experience is completely free of video ads and pop-ups, giving you the clean, uninterrupted space your brain needs to focus on the numbers.

What Sudoku levels are included?

FreeJeu's Sudoku supports easy, medium, hard, and expert Sudoku puzzle difficulties.

Does Sudoku require math?

No. Sudoku uses logic and pattern elimination, not arithmetic.

Are all Sudoku puzzles solvable?

Yes. All Sudoku puzzles are solvable. And there may be more than one solution for a given puzzle.

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Free Online Sudoku & Custom Puzzle Solver (No Ads) | FreeJeu.com