I have previous experience in working on Sudoku project (in C language).
It wont be any hard for me to code it up again in python. I understand your program and I know how to go about the problem logically.
#edit
Sir/Maam,
It appears that for your SudokuApp work, u have not hired any freelancer yet. Also you state that deadline is 20th April..so its very close. If you give me any signal,i can start working on your project and show you the result...only after than you can pay me.I am very interested in sudoku app. I will therefor work for you on cheap price.
"Hire after seeing the results,no fake promises." just give me a signal to start working,
thank you