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Mini Sudoku

About Mini Sudoku

6x6 Sudoku for a quicker challenge. This free online game is part of our brain training collection and is designed for players of all ages.

  • Difficulty: easy
  • Average play time: 3 minutes
  • No download or signup required
  • Works on desktop and mobile devices

How to Play Mini Sudoku

Fill every row, column, and 3×3 box with the digits 1–9. Each digit can appear only once per row, column, and box.

Tip: Mini mode generates easier puzzles — great for beginners!

💡 Mini Sudoku Strategy

  • The smaller grid forgives scanning. With 2×3 boxes there are only six candidates per cell, so pure elimination will carry you through most puzzles without pencil marks at all.
  • Start where two givens share a box. In a 6×6 the boxes are short and wide, so two givens in one box rule out a lot of the row immediately.
  • Finish a row before moving on. Completing one line hands you six confirmed eliminations across six different boxes at once — much higher leverage than in a 9×9.
  • Treat it as a warm-up. If you are learning the technique, mini grids let you practise cross-hatching a dozen times in the span of one full-size puzzle.

🧠 What Mini Sudoku Builds

Mini Sudoku teaches the same constraint logic as the full grid but shortens the feedback loop to two or three minutes, which is what makes it a good on-ramp. Beginners get to feel the "only one digit fits here" moment repeatedly instead of once or twice per sitting, and players returning after a break use it to re-learn the scanning habit before stepping back up to 9×9.

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