You can now create 4×4 and 6×6 puzzles in addition to 9×9 puzzles. Plus you have control over the line width, line color, and font size for both the puzzles and the answer pages.
Use the Select Puzzle Type drop-down to select between 4×4, 6×6, or 9×9 puzzles. You can select the font size for the numbers in the puzzle for both the puzzle and answer pages, in addition to the font you would like to use for your sudoku puzzle book.
Use the slider to set the colors you want for the dark and light lines in your book. You can also set the line size for both the dark and light lines individually for the puzzle and answer pages.