Printable jigsaw sudoku

In jigsaw sudoku (also called irregular sudoku) there are no 3×3 boxes: the grid is split into nine free-form regions of nine cells each. Rows and columns work as usual, and each region must contain the numbers 1 to 9.

The odd shapes are also a clue: where a region pokes into another row or column, counting the missing numbers often tells you where one must go. In the PDF the regions have thick borders, so they stay clear even in black and white.

There are easy and medium puzzles, all with a unique solution and the answers on page 2.

The puzzles

• Jigsaw Sudoku #1easy · 32 clues
• Jigsaw Sudoku #2easy · 32 clues
• Jigsaw Sudoku #3medium · 28 clues
• Jigsaw Sudoku #4medium · 28 clues

Useful techniques

• Hidden single
• Locked candidates
• Hidden pair

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).