This version of the Sudoku game is intended for the advanced player to solve Diagonal and Overlap puzzles. Additional features are provided to allow you to solve even the toughest puzzles including: 
1. input error prevention* 
2. highlighting* 
3. possible numbers*
4. continuous updating of possible numbers*
5. snapshot screen storage
6. completed numbers 
7. hints 
8. puzzle solution 
* configurable options 
You may enter your own puzzle manually or puzzles can be generated internally at one of four difficulty levels. A diagonal and overlap puzzle formats are also supported. 
This version is intended for the iPad only.