2020-Jan-20: For my more popular puzzles (including Sudoku, Kakuro, Inkies) I am now offering a "booklet" formatting option that produces two-puzzles per page, sideways. You can print these double-sided, fold & staple them to produce a booklet with the pages in the right order. You'll find this option on the final download screen for most one-per-page puzzles. Here's a sample. Answers are usually on a separate sheet so you can omit them, if you like.