AndrSudo

This app generates puzzles with difficulty level between 0 and 20.

The probability of generating sudokus with level greater than 0 is about 5%

You can save/open your sudoku.

Rules applied by generator:

1. Singles

2. Hidden singles

3. Intersection

4. Pairs

5. Triples

6. Remote pair

7. Rectangles

8. x-wing

9. Hidden pairs

10. Forcing chains

11. xy-wing

12. Nishio