Medium Sudoku to print (free PDF)
Download free medium Sudoku puzzles to print in PDF, ready for A4 or US Letter. The sweet spot between relaxing and challenging.
Sudoku book (PDF)
Download the free sudoku book in PDF: 20, 60 or 120 puzzles, with the solutions in a separate PDF. Ready to print on A4 or US Letter.
Sample puzzles
Why these puzzles?
A medium Sudoku gives around 30–34 clues, so plain scanning gets you part of the way and then you reach for pencil marks (candidate notes). It is the level most daily solvers enjoy.
How to print
Pick how many puzzles and the paper size, then press "Generate PDF". Six puzzles per page by default; the matching answers live in the separate solutions PDF.
Solving tips
When scanning stalls, pencil in the candidates for each empty cell and look for cells with a single candidate, or numbers that fit only one spot in a box.