What is Medium Sudoku?

Medium Sudoku online is designed for players who understand the basic rules and want a more thoughtful challenge than Easy Sudoku. These free medium Sudoku puzzles still rely on standard 9×9 logic, but they ask you to track more candidates and combine techniques across rows, columns, and boxes. Use notes to organize possibilities, request a hint when you are stuck, and follow the timer at your own pace. Medium sits between Easy and Hard: it is less immediate than beginner puzzles without requiring the denser deduction expected at higher levels. No sign-up is required, and the game is mobile-friendly.

How to Play Medium Sudoku

Medium Sudoku introduces deliberate candidate elimination. Start with singles, then use local relationships to reduce the remaining options:

• Complete the basic scanning and singles used in Easy Sudoku.
• Add notes to unresolved cells and update them after every placement.
• Compare a 3×3 box with its crossing rows and columns to find locked candidates.
• Look for naked or hidden pairs that restrict two digits to two cells in one unit.
• After each local elimination, rescan that row, column, and box for a new single.

The aim is to learn controlled candidate work within a small area of the grid. When these short eliminations become routine, continue to Hard Sudoku, where deductions connect more units.

More Ways to Practice Medium Sudoku

Prefer solving away from the screen? Download printable Medium Sudoku for offline practice. If you are stuck on a grid of your own, you can also check the puzzle with the online Sudoku solver.

For a different puzzle each day, open the Daily Sudoku challenge. You can also return to all online Sudoku levels or review candidate techniques before continuing.

Medium Sudoku FAQ

Is Medium Sudoku hard?

Medium Sudoku is more demanding than Easy because fewer placements are immediately visible, but it is designed to be more approachable than Hard Sudoku. Basic candidate elimination, scanning, and pairs are often useful.

Is Medium Sudoku free to play?

Yes. You can play Medium Sudoku online for free, and no sign-up is required.

Can I use notes in Medium Sudoku?

Yes. Notes let you record candidate numbers in empty cells while you work through the puzzle.

Are hints available in Medium Sudoku?

Yes. You can use the Hint control when you need help finding the next move, but the page does not promise unlimited hints.

What should I try after Medium Sudoku?

When Medium puzzles feel comfortable, try Hard Sudoku for longer deductions and fewer obvious placements.