Jigsaw Sudoku

Sudoku with irregular shaped regions instead of 3×3 boxes.

Objective

Fill the entire 9×9 grid following row and column rules, but instead of regular 3×3 boxes, use irregular jigsaw-shaped regions. Each region must contain digits 1-9 without repetition.

Rules

Row Rule

Each horizontal row must contain all digits from 1 to 9 without repetition.

Column Rule

Each vertical column must contain all digits from 1 to 9 without repetition.

Region Rule (DIFFERENT)

Each irregular jigsaw-shaped region (not standard 3×3 boxes) must contain all digits from 1 to 9 without repetition. The grid still has 9 regions, but they have unique shapes.

Solving Tips

1.
Pay close attention to region boundaries - they're not regular 3×3 boxes anymore.
2.
Irregular region shapes create unique solving patterns you won't find in classic Sudoku.
3.
Some regions may span multiple rows or columns in unexpected ways.
4.
Use the unique region constraints to your advantage - they often provide different insights.

Try Jigsaw Sudoku

Think outside the box with irregular regions and discover new solving strategies