KillerSudoku for the iPhone allows you to play both Classic Sudoku and the increasingly popular (and harder) variation known as Killer. Killer Sudoku is already appearing daily in The Times and other newspapers.
If you like Sudoku, then Killer Sudoku is the next level up. Its tough, its hard, its... well, Killer!
Features:
- Killer Sudoku puzzle generator
- 15,000 puzzles for Classic Sudoku
- Easy, Medium, and Hard difficulty levels
- Easily enter online or newspaper puzzles
- Pencilling/Annotations (manual or live)
- Error detection
- Save and Open puzzles
- Snapshots
- Lock a number to enter with one touch
- Coloured or outline backgrounds for Killer Sudoku
- Clean uncluttered interface and keyboard
Updates are free.