Play Medium Sudoku Online
A step up from easy: fewer clues, and room to practice pairs and hidden singles. Still a puzzle you can finish in one sitting.
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Try a harder challenge as you improve, or drop to an easier puzzle if you are just getting started.
How to Play Medium Sudoku
Medium Sudoku follows the same rules, with fewer givens than easy. Scanning still helps, then pairs and hidden singles finish the grid in one sitting.
- 1Clear the obvious singles first, the same way you do on easy.
- 2When two cells in a unit share only the same two digits, those digits cannot go elsewhere in that unit.
- 3Find a hidden single: a digit that fits only one cell in a row, column, or box.
- 4Update your notes after every placement.
- 5If you stall, follow one number across the board before you guess.
Track Your Progress
Solve puzzles, build streaks, and unlock achievements as you play. Stay with it and see how you improve over time.
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Frequently Asked Questions
- What is medium Sudoku?
- Medium Sudoku offers a balanced challenge with fewer starting numbers than easy puzzles. It requires more logical reasoning and pattern recognition. Techniques like naked pairs and hidden singles become important as you improve.
- What techniques work for medium Sudoku?
- Combine scanning and elimination with naked pairs (two cells sharing only the same two possible numbers) and hidden singles (a number that can only go in one cell within a row, column, or box). Stay patient and methodical.
- When should I move from easy to medium Sudoku?
- Move to medium when easy puzzles feel quick to solve. Medium Sudoku is the natural step between beginner and advanced levels—perfect for building confidence and discovering new techniques.
- How long does medium Sudoku usually take?
- Many players finish medium puzzles in 10 to 25 minutes. Times vary based on how comfortable you are with candidate elimination and pair techniques.
- Should I use notes on medium Sudoku?
- Yes. Notes become very useful on medium because many cells have multiple candidates. Keeping candidates clean helps you spot hidden singles and pairs faster.