A larger number grid
The large-print PDF uses 24-point given numbers inside 46-point cells. The grid is roughly 5.75 inches wide, leaving space around it on both Letter and A4. The standard PDF uses 20-point numbers in 40-point cells. Neither format changes the Sudoku rules or the puzzle generated from a seed.
Set the paper before printing
Match the paper selector to the sheets in your printer. Download the PDF and select Actual size or 100% in your print dialog. Printer margins vary, so preview both pages before printing. If the numbers still feel too small, try a larger paper or printer enlargement rather than assuming every large-print layout suits every reader.
Choose a technique level
Easy solves with naked singles. Moderate also needs hidden singles. Challenging needs locked candidates or naked pairs beyond singles. Every category must complete without guessing and pass an exactly-one-solution check. The clue count is not the grade. Choose a level and Generate from seed to apply it; see our difficulty guide for the full versioned rule.