Windoku Sudoku
The rule: Each of the four shaded windows also contains 1-9.
Play unlimited Windoku 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
Windoku sudoku puzzles in the library
- Steady Four Panes — Sudoku·AD
- Middle Four Panes — Sudoku·AD
- Middle Windows — Sudoku·AD
- Steady Overlook — Sudoku·AD
- Steady Glasshouse — Sudoku·AD
- Steady Windows — Sudoku·AD