Generates sudokus at desired difficulty level

[sudoku] / sudoku.h

diff --git a/sudoku.h b/sudoku.h
index 5028634573e2c9baeed23487551e74e796af41de..dee32c5a65258ff8ff7cfa093879fc842251a187 100644 (file)
--- a/sudoku.h
+++ b/sudoku.h
@@ -34,6 +34,8 @@ private:
        void clone_to(sudoku &to);
        int get_best_guess(int &col, int &row);
        sudoku fill_with_random(int &solvable);
+       sudoku remove_randomly(int min_guesses, int depth);
+       int used_numbers();
 
        char table[9][9];
 };