Soduku solver challenger

In this project you can solve any Sudoku puzzle.I used 4 techniques to solve the puzzles.And the fifth one is puttinng tow possible values and the application try to bulid the missing numbers in all puzzle.in fact this aplication challenge any Sudoku puzzle.this appliction solve only puzzles which have solution.now i work on if the puzzle has not a solution. it may be need more development for more perfection. so if you can please contact me at mail