The Brain Games Puzzle Pack puts 9 matching pages in one coordinated PDF with a contents cover: Sudoku Kids 4×4 #1, Sudoku Kids 4×4 #2, Sudoku Kids 4×4 #3, and more. Comes as print-ready PDFs in both US Letter and A4 sizes. Print at home or at a copy shop as often as you like, or fill it in on a tablet with any PDF annotation app.