Browse and solve medium Sudoku puzzles. With 30-35 clues given, these puzzles introduce candidate elimination techniques and deeper logical reasoning.
Medium puzzles have 30-35 given clues. While singles can solve portions, you will encounter sections requiring intermediate techniques like naked pairs, hidden pairs, pointing pairs, and box-line reduction. The reduced clue count creates situations where no cell has an immediately obvious answer, forcing you to use elimination logic to narrow down possibilities.
Begin every medium puzzle the same way you would an easy one: scan for naked singles and hidden singles. Fill in every cell you can using basic techniques first. This initial pass will typically solve 30 to 50 percent of the empty cells.
When you get stuck, switch to pencil marks. Write all possible candidates in every unsolved cell. Then scan for naked pairs - two cells in the same row, column, or box that share exactly two candidates. When you find a pair, eliminate those two numbers from all other cells in that house. Next, look for pointing pairs: when a candidate in a box is restricted to a single row or column, it can be eliminated from that row or column outside the box.
After each elimination, re-scan for new singles created by the reduced candidate lists. This cycle of pencil marks, pair elimination, and re-scanning will solve any medium puzzle.
Learn the best techniques to solve medium Sudoku puzzles efficiently. How to Solve Medium Sudoku
Medium Sudoku puzzles have fewer starting clues (typically 30 to 35) and require intermediate solving techniques beyond basic scanning. You will often need to use naked pairs, hidden pairs, and pointing pairs to make progress. The reduced clue count means more cells to solve and more complex logical chains.
Medium Sudoku puzzles typically take 10 to 25 minutes for intermediate solvers. Beginners who are new to medium difficulty may take 30 minutes or more as they learn intermediate techniques. With practice, most solvers can complete medium puzzles in 8 to 15 minutes.
Medium puzzles require all the beginner techniques (naked singles, hidden singles) plus intermediate strategies like naked pairs, hidden pairs, pointing pairs, and box-line reduction. Learning to maintain accurate pencil marks becomes essential at this level.
Move to medium when you can consistently solve easy puzzles in under 10 minutes without getting stuck. You should be comfortable with naked singles and hidden singles. Medium puzzles will introduce you to new techniques like pairs and pointing patterns that expand your solving toolkit.
Yes. While some medium puzzles can be solved without pencil marks by skilled solvers, they are strongly recommended. Pencil marks help you spot pairs and pointing patterns that are nearly impossible to see otherwise. Developing good pencil mark habits at medium difficulty prepares you for hard and expert puzzles where they are absolutely essential.
Naked pairs are two cells in the same house that contain exactly the same two candidates and nothing else. Hidden pairs are two cells that share two candidates that do not appear anywhere else in that house, even though the cells may contain additional candidates. Both allow you to eliminate candidates, but hidden pairs are harder to spot because the cells are cluttered with extra candidates.
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