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Play unlimited 6×6 Sudoku puzzles, or take on today’s Daily Challenge and build your streak.

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6×6 Sudoku

6×6 • 2×3 • 1-6
Time00:00Mistakes0Filled0/36

Select an empty cell, then choose a number.

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Play as much Sudoku as you likeUnlimited Free Play is always available. Today’s Daily Challenge builds your streak with one new puzzle each local calendar day.
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How to play

How to play 6×6 Sudoku

Fill the 6×6 grid so every row, column and 2×3 box contains the numbers 1 to 6 exactly once. Choose a number for each empty square and use Undo whenever you want to reconsider a move.

  1. Select an empty square and choose a number from 1 to 6.
  2. Use Undo to step back through your entries whenever you want to reconsider a move.
  3. Each row, column and 2×3 box must contain every number from 1 to 6 exactly once.
  4. Undo reverses your last entry.
  5. Complete every square correctly to finish the puzzle.
Free Sudoku Online

Play free Sudoku in your browser

SudokuDimensions.com is the official browser home of Sudoku Dimensions from After Dark Studios. Play unlimited free 6×6 Sudoku puzzles with no download, account or sign-up required.

Each puzzle uses a 6×6 grid divided into 2×3 boxes. Fill every row, column and box with the numbers 1 to 6 exactly once. Free Play is always available, while the Daily Challenge gives you a fresh reason to return and build your streak.

6×6 Sudoku strategy

Start with rows, columns or boxes that already contain the most numbers. Eliminate digits that are already present, then use the remaining possibilities to identify forced placements before guessing.

Learn while you play

6×6 Sudoku Guides

All guides
Guide

How to Play 6×6 Sudoku

The rules of 6×6 Sudoku and a simple way to approach your first grid.

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Guide

6×6 Sudoku Solving Techniques

The most useful logical techniques for a compact 6×6 Sudoku grid.

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Guide

6×6 Sudoku vs 9×9 Sudoku

6×6 and 9×9 Sudoku use the same core logic, but the smaller format changes the pace.

Read guide