Medium printable sudoku

In medium sudoku, singles are no longer enough: at some point the grid seems stuck and you need one more idea. Usually it is a hidden pair or a locked candidate, techniques you can learn in minutes and that change how you read a puzzle.

Write pencil marks: the possible numbers, small, in the corner of each cell. With the candidates in front of you, the techniques almost jump out. Every puzzle has an A4 PDF with the answers on page 2.

The techniques you need are explained step by step in the guides: start with the hidden single and locked candidates.

The puzzles

• Medium Sudoku #1medium · 29 clues
• Medium Sudoku #2medium · 30 clues
• Medium Sudoku #3medium · 29 clues
• Medium Sudoku #4medium · 30 clues

Useful techniques

• Locked candidates
• Hidden pair
• X-Wing
• XY-Wing

Want several puzzles on one page? The printable sudoku generator builds an A4 sheet with several puzzles, the rules and the answers (the page opens in Italian; pick English from its language menu).