Zipper Sudoku
The rule: On a zipper, digits an equal distance from the centre sum to the centre digit.
Play unlimited Zipper puzzles free — every one generated with a unique solution, rated by the solving techniques it actually needs.
- Four difficulties, from gentle to expert
- Step-by-step hints that teach, not just tell
- Interactive lessons and a daily race
- Make and share your own puzzles
Zipper sudoku puzzles in the library
- Soft Closure — Sudoku·AD
- Soft Seam — Sudoku·AD
- Soft Fold — Sudoku·AD
- Soft Zipper — Sudoku·AD
- Gentle Closure — Sudoku·AD
- Gentle Seam — Sudoku·AD
- Gentle Fold — Sudoku·AD
- Gentle Zipper — Sudoku·AD