Classic Sudoku

Medium Sudoku Online

A balance of relaxation and challenge, with sensible use of Notes in some areas.

Best forPlayers who know the basic Sudoku rules well
Focus onCandidates, simple pairs, intersection eliminations
How to play effectively

Sudoku Medium tips

At Medium, simple moves still appear but not continuously. Pencil marks become useful for tracking 2–3 candidates and spotting hidden singles.

  • Add candidates selectively in a stuck region.
  • Find a digit that appears only once in a region's candidate lists.
  • Look at the intersection between a block and a row/column.
Choose the right level for effective practice

How is Medium different from Easy?

Medium still has basic moves, but they do not appear continuously. You will start needing Pencil marks in stuck regions, hidden singles, and block-row or block-column intersections.

This is the best practice level once you understand the rules but want to improve candidate reading. Prefer selective notes, update them after every new digit, and avoid turning the whole board into a hard-to-read matrix of annotations.

Play without installing anything

Start Medium Sudoku in your browser

The game board supports Notes, Undo, Pause, Hints, and saved progress. You can sign in later if you want to sync your achievements.

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