private static void gameMake(int n){
        int wrong = 0;
        int right = 0;
        int unsolvable = 0;
        int[][] newBoard;

        System.out.println("How many empty cells per board?");
        Scanner in = new Scanner(System.in);
        int x = in.nextInt();
        long start = System.currentTimeMillis();
        int i =1;
        while(n >= i){
            newBoard = makeBoard(x);
            int[][] newBoard2 = new int[9][9];
            for(int k =0; k < newBoard.length; k++){
                for(int m = 0; m < newBoard.length; m++){
                    newBoard2[k][m] = newBoard[k][m];
                }
            }
            if (!isValidBoard(newBoard)) {
                wrong++;
            } else if (isSolvableBoard(newBoard)) {
                System.out.println("Board #" + i);
                for (int k = 0; k < newBoard2.length; k++) {
                    for (int m = 0; m < newBoard2.length; m++) {
                        System.out.print(newBoard2[k][m] + " ");
                    }
                    System.out.println();
                }
                System.out.println("The solution of Board #" + i);
                for (int k = 0; k < newBoard.length; k++) {
                    for (int m = 0; m < newBoard.length; m++) {
                        System.out.print(newBoard[k][m] + " ");
                    }
                    System.out.println();
                }
                System.out.println();
                right++;
                i++;
            } else if(!isSolvableBoard(newBoard2)){
                unsolvable++;
            }
        }
        long end = System.currentTimeMillis();
        float sec = (end - start) / 1000F;
        System.out.println("Empty cells per board : "+ x);
        System.out.println("Valid boards created : "+ right);
        System.out.println("Invalid boards created : "+ wrong);
        System.out.println("Unsolvable boards created : "+ unsolvable);
        System.out.println("Elapsed time in seconds : "+ sec);

    }