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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.