Sudoku Solver

In this project I create a simple Sudoku solving program using backtracking in Ocaml. To solve a sudoku using this tool simply enter the sudoku as an integer matrix as shown below (s1 and s2 are examples sudokus). Then change the last line of the program to "print (solve sudoku_name numbers)" where sudoku_name is the name of the sudoku you defined. Then run the program with the ocaml interpreter.