Sudoku

Features:

- No ads or tracking
- Dark and light theme
- Notes / candidates / pencil marks
- Automatic note filling
- Hints based on strategies
- Efficient “sticky” input mode: First select the value, then all cells in which to remove or place it. Supports sliding across multiple cells for even faster editing.
- Value highlighting based on notes
- Different Sudoku sizes: 4x4, 9x9, 16x16, 25x25
- Adapts to every screen size

Advanced puzzle generator: design your own difficulty

- Select Sudoku size
- Define minimum number of givens
- Select strategies required to solve the Sudoku

Import and export puzzles:

- Supports multiple text-based formats
- Copy to clipboard
- Transfer directly into the advanced Sudoku solver from sudokuwiki.org